/* * Window messaging support * * Copyright 2001 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" #include "wine/port.h" #include "winbase.h" #include "wingdi.h" #include "winuser.h" #include "winerror.h" #include "winnls.h" #include "dde.h" #include "wine/unicode.h" #include "wine/server.h" #include "queue.h" #include "input.h" #include "message.h" #include "hook.h" #include "spy.h" #include "user.h" #include "win.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(msg); #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE #define WM_NCMOUSELAST WM_NCMBUTTONDBLCLK #define MAX_PACK_COUNT 4 /* description of the data fields that need to be packed along with a sent message */ struct packed_message { int count; const void *data[MAX_PACK_COUNT]; size_t size[MAX_PACK_COUNT]; }; /* info about the message currently being received by the current thread */ struct received_message_info { enum message_type type; MSG msg; UINT flags; /* InSendMessageEx return flags */ }; /* structure to group all parameters for sent messages of the various kinds */ struct send_message_info { enum message_type type; HWND hwnd; UINT msg; WPARAM wparam; LPARAM lparam; UINT flags; /* flags for SendMessageTimeout */ UINT timeout; /* timeout for SendMessageTimeout */ SENDASYNCPROC callback; /* callback function for SendMessageCallback */ ULONG_PTR data; /* callback data */ }; /* flag for messages that contain pointers */ /* 32 messages per entry, messages 0..31 map to bits 0..31 */ #define SET(msg) (1 << ((msg) & 31)) static const unsigned int message_pointer_flags[] = { /* 0x00 - 0x1f */ SET(WM_CREATE) | SET(WM_SETTEXT) | SET(WM_GETTEXT) | SET(WM_WININICHANGE) | SET(WM_DEVMODECHANGE), /* 0x20 - 0x3f */ SET(WM_GETMINMAXINFO) | SET(WM_DRAWITEM) | SET(WM_MEASUREITEM) | SET(WM_DELETEITEM) | SET(WM_COMPAREITEM), /* 0x40 - 0x5f */ SET(WM_WINDOWPOSCHANGING) | SET(WM_WINDOWPOSCHANGED) | SET(WM_COPYDATA) | SET(WM_NOTIFY) | SET(WM_HELP), /* 0x60 - 0x7f */ SET(WM_STYLECHANGING) | SET(WM_STYLECHANGED), /* 0x80 - 0x9f */ SET(WM_NCCREATE) | SET(WM_NCCALCSIZE) | SET(WM_GETDLGCODE), /* 0xa0 - 0xbf */ SET(EM_GETSEL) | SET(EM_GETRECT) | SET(EM_SETRECT) | SET(EM_SETRECTNP), /* 0xc0 - 0xdf */ SET(EM_REPLACESEL) | SET(EM_GETLINE) | SET(EM_SETTABSTOPS), /* 0xe0 - 0xff */ SET(SBM_GETRANGE) | SET(SBM_SETSCROLLINFO) | SET(SBM_GETSCROLLINFO), /* 0x100 - 0x11f */ 0, /* 0x120 - 0x13f */ 0, /* 0x140 - 0x15f */ SET(CB_GETEDITSEL) | SET(CB_ADDSTRING) | SET(CB_DIR) | SET(CB_GETLBTEXT) | SET(CB_INSERTSTRING) | SET(CB_FINDSTRING) | SET(CB_SELECTSTRING) | SET(CB_GETDROPPEDCONTROLRECT) | SET(CB_FINDSTRINGEXACT), /* 0x160 - 0x17f */ 0, /* 0x180 - 0x19f */ SET(LB_ADDSTRING) | SET(LB_INSERTSTRING) | SET(LB_GETTEXT) | SET(LB_SELECTSTRING) | SET(LB_DIR) | SET(LB_FINDSTRING) | SET(LB_GETSELITEMS) | SET(LB_SETTABSTOPS) | SET(LB_ADDFILE) | SET(LB_GETITEMRECT), /* 0x1a0 - 0x1bf */ SET(LB_FINDSTRINGEXACT), /* 0x1c0 - 0x1df */ 0, /* 0x1e0 - 0x1ff */ 0, /* 0x200 - 0x21f */ SET(WM_NEXTMENU) | SET(WM_SIZING) | SET(WM_MOVING) | SET(WM_DEVICECHANGE), /* 0x220 - 0x23f */ SET(WM_MDICREATE) | SET(WM_MDIGETACTIVE) | SET(WM_DROPOBJECT) | SET(WM_QUERYDROPOBJECT) | SET(WM_DRAGLOOP) | SET(WM_DRAGSELECT) | SET(WM_DRAGMOVE), /* 0x240 - 0x25f */ 0, /* 0x260 - 0x27f */ 0, /* 0x280 - 0x29f */ 0, /* 0x2a0 - 0x2bf */ 0, /* 0x2c0 - 0x2df */ 0, /* 0x2e0 - 0x2ff */ 0, /* 0x300 - 0x31f */ SET(WM_ASKCBFORMATNAME) }; /* flags for messages that contain Unicode strings */ static const unsigned int message_unicode_flags[] = { /* 0x00 - 0x1f */ SET(WM_CREATE) | SET(WM_SETTEXT) | SET(WM_GETTEXT) | SET(WM_GETTEXTLENGTH) | SET(WM_WININICHANGE) | SET(WM_DEVMODECHANGE), /* 0x20 - 0x3f */ SET(WM_CHARTOITEM), /* 0x40 - 0x5f */ 0, /* 0x60 - 0x7f */ 0, /* 0x80 - 0x9f */ SET(WM_NCCREATE), /* 0xa0 - 0xbf */ 0, /* 0xc0 - 0xdf */ SET(EM_REPLACESEL) | SET(EM_GETLINE) | SET(EM_SETPASSWORDCHAR), /* 0xe0 - 0xff */ 0, /* 0x100 - 0x11f */ SET(WM_CHAR) | SET(WM_DEADCHAR) | SET(WM_SYSCHAR) | SET(WM_SYSDEADCHAR), /* 0x120 - 0x13f */ SET(WM_MENUCHAR), /* 0x140 - 0x15f */ SET(CB_ADDSTRING) | SET(CB_DIR) | SET(CB_GETLBTEXT) | SET(CB_GETLBTEXTLEN) | SET(CB_INSERTSTRING) | SET(CB_FINDSTRING) | SET(CB_SELECTSTRING) | SET(CB_FINDSTRINGEXACT), /* 0x160 - 0x17f */ 0, /* 0x180 - 0x19f */ SET(LB_ADDSTRING) | SET(LB_INSERTSTRING) | SET(LB_GETTEXT) | SET(LB_GETTEXTLEN) | SET(LB_SELECTSTRING) | SET(LB_DIR) | SET(LB_FINDSTRING) | SET(LB_ADDFILE), /* 0x1a0 - 0x1bf */ SET(LB_FINDSTRINGEXACT), /* 0x1c0 - 0x1df */ 0, /* 0x1e0 - 0x1ff */ 0, /* 0x200 - 0x21f */ 0, /* 0x220 - 0x23f */ SET(WM_MDICREATE), /* 0x240 - 0x25f */ 0, /* 0x260 - 0x27f */ 0, /* 0x280 - 0x29f */ 0, /* 0x2a0 - 0x2bf */ 0, /* 0x2c0 - 0x2df */ 0, /* 0x2e0 - 0x2ff */ 0, /* 0x300 - 0x31f */ SET(WM_PAINTCLIPBOARD) | SET(WM_SIZECLIPBOARD) | SET(WM_ASKCBFORMATNAME) }; /* check whether a given message type includes pointers */ inline static int is_pointer_message( UINT message ) { if (message >= 8*sizeof(message_pointer_flags)) return FALSE; return (message_pointer_flags[message / 32] & SET(message)) != 0; } /* check whether a given message type contains Unicode (or ASCII) chars */ inline static int is_unicode_message( UINT message ) { if (message >= 8*sizeof(message_unicode_flags)) return FALSE; return (message_unicode_flags[message / 32] & SET(message)) != 0; } #undef SET /* add a data field to a packed message */ inline static void push_data( struct packed_message *data, const void *ptr, size_t size ) { data->data[data->count] = ptr; data->size[data->count] = size; data->count++; } /* add a string to a packed message */ inline static void push_string( struct packed_message *data, LPCWSTR str ) { push_data( data, str, (strlenW(str) + 1) * sizeof(WCHAR) ); } /* retrieve a pointer to data from a packed message and increment the buffer pointer */ inline static void *get_data( void **buffer, size_t size ) { void *ret = *buffer; *buffer = (char *)*buffer + size; return ret; } /* make sure that the buffer contains a valid null-terminated Unicode string */ inline static BOOL check_string( LPCWSTR str, size_t size ) { for (size /= sizeof(WCHAR); size; size--, str++) if (!*str) return TRUE; return FALSE; } /* make sure that there is space for 'size' bytes in buffer, growing it if needed */ inline static void *get_buffer_space( void **buffer, size_t size ) { void *ret; if (!(ret = HeapReAlloc( GetProcessHeap(), 0, *buffer, size ))) HeapFree( GetProcessHeap(), 0, *buffer ); *buffer = ret; return ret; } /* retrieve a string pointer from packed data */ inline static LPWSTR get_string( void **buffer ) { return get_data( buffer, (strlenW( (LPWSTR)*buffer ) + 1) * sizeof(WCHAR) ); } /* check whether a combobox expects strings or ids in CB_ADDSTRING/CB_INSERTSTRING */ inline static BOOL combobox_has_strings( HWND hwnd ) { DWORD style = GetWindowLongA( hwnd, GWL_STYLE ); return (!(style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) || (style & CBS_HASSTRINGS)); } /* check whether a listbox expects strings or ids in LB_ADDSTRING/LB_INSERTSTRING */ inline static BOOL listbox_has_strings( HWND hwnd ) { DWORD style = GetWindowLongA( hwnd, GWL_STYLE ); return (!(style & (LBS_OWNERDRAWFIXED | LBS_OWNERDRAWVARIABLE)) || (style & LBS_HASSTRINGS)); } /* check if hwnd is a broadcast magic handle */ inline static BOOL is_broadcast( HWND hwnd ) { return (hwnd == HWND_BROADCAST || hwnd == HWND_TOPMOST); } /*********************************************************************** * broadcast_message_callback * * Helper callback for broadcasting messages. */ static BOOL CALLBACK broadcast_message_callback( HWND hwnd, LPARAM lparam ) { struct send_message_info *info = (struct send_message_info *)lparam; if (!(GetWindowLongW( hwnd, GWL_STYLE ) & (WS_POPUP|WS_CAPTION))) return TRUE; switch(info->type) { case MSG_UNICODE: SendMessageTimeoutW( hwnd, info->msg, info->wparam, info->lparam, info->flags, info->timeout, NULL ); break; case MSG_ASCII: SendMessageTimeoutA( hwnd, info->msg, info->wparam, info->lparam, info->flags, info->timeout, NULL ); break; case MSG_NOTIFY: SendNotifyMessageW( hwnd, info->msg, info->wparam, info->lparam ); break; case MSG_CALLBACK: SendMessageCallbackW( hwnd, info->msg, info->wparam, info->lparam, info->callback, info->data ); break; case MSG_POSTED: PostMessageW( hwnd, info->msg, info->wparam, info->lparam ); break; default: ERR( "bad type %d\n", info->type ); break; } return TRUE; } /*********************************************************************** * map_wparam_AtoW * * Convert the wparam of an ASCII message to Unicode. */ static WPARAM map_wparam_AtoW( UINT message, WPARAM wparam ) { if (message == WM_CHARTOITEM || message == EM_SETPASSWORDCHAR || message == WM_CHAR || message == WM_DEADCHAR || message == WM_SYSCHAR || message == WM_SYSDEADCHAR || message == WM_MENUCHAR) { char ch = LOWORD(wparam); WCHAR wch; MultiByteToWideChar(CP_ACP, 0, &ch, 1, &wch, 1); wparam = MAKEWPARAM( wch, HIWORD(wparam) ); } return wparam; } /*********************************************************************** * map_wparam_WtoA * * Convert the wparam of a Unicode message to ASCII. */ static WPARAM map_wparam_WtoA( UINT message, WPARAM wparam ) { if (message == WM_CHARTOITEM || message == EM_SETPASSWORDCHAR || message == WM_CHAR || message == WM_DEADCHAR || message == WM_SYSCHAR || message == WM_SYSDEADCHAR || message == WM_MENUCHAR) { WCHAR wch = LOWORD(wparam); char ch; WideCharToMultiByte( CP_ACP, 0, &wch, 1, &ch, 1, NULL, NULL ); wparam = MAKEWPARAM( (unsigned char)ch, HIWORD(wparam) ); } return wparam; } /*********************************************************************** * pack_message * * Pack a message for sending to another process. * Return the size of the data we expect in the message reply. * Set data->count to -1 if there is an error. */ static size_t pack_message( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam, struct packed_message *data ) { data->count = 0; switch(message) { case WM_NCCREATE: case WM_CREATE: { CREATESTRUCTW *cs = (CREATESTRUCTW *)lparam; push_data( data, cs, sizeof(*cs) ); if (HIWORD(cs->lpszName)) push_string( data, cs->lpszName ); if (HIWORD(cs->lpszClass)) push_string( data, cs->lpszClass ); return sizeof(*cs); } case WM_GETTEXT: case WM_ASKCBFORMATNAME: return wparam * sizeof(WCHAR); case WM_SETTEXT: case WM_WININICHANGE: case WM_DEVMODECHANGE: case CB_DIR: case LB_DIR: case LB_ADDFILE: case EM_REPLACESEL: push_string( data, (LPWSTR)lparam ); return 0; case WM_GETMINMAXINFO: push_data( data, (MINMAXINFO *)lparam, sizeof(MINMAXINFO) ); return sizeof(MINMAXINFO); case WM_DRAWITEM: push_data( data, (DRAWITEMSTRUCT *)lparam, sizeof(DRAWITEMSTRUCT) ); return 0; case WM_MEASUREITEM: push_data( data, (MEASUREITEMSTRUCT *)lparam, sizeof(MEASUREITEMSTRUCT) ); return sizeof(MEASUREITEMSTRUCT); case WM_DELETEITEM: push_data( data, (DELETEITEMSTRUCT *)lparam, sizeof(DELETEITEMSTRUCT) ); return 0; case WM_COMPAREITEM: push_data( data, (COMPAREITEMSTRUCT *)lparam, sizeof(COMPAREITEMSTRUCT) ); return 0; case WM_WINDOWPOSCHANGING: case WM_WINDOWPOSCHANGED: push_data( data, (WINDOWPOS *)lparam, sizeof(WINDOWPOS) ); return sizeof(WINDOWPOS); case WM_COPYDATA: { COPYDATASTRUCT *cp = (COPYDATASTRUCT *)lparam; push_data( data, cp, sizeof(*cp) ); if (cp->lpData) push_data( data, cp->lpData, cp->cbData ); return 0; } case WM_NOTIFY: /* WM_NOTIFY cannot be sent across processes (MSDN) */ data->count = -1; return 0; case WM_HELP: push_data( data, (HELPINFO *)lparam, sizeof(HELPINFO) ); return 0; case WM_STYLECHANGING: case WM_STYLECHANGED: push_data( data, (STYLESTRUCT *)lparam, sizeof(STYLESTRUCT) ); return 0; case WM_NCCALCSIZE: if (!wparam) { push_data( data, (RECT *)lparam, sizeof(RECT) ); return sizeof(RECT); } else { NCCALCSIZE_PARAMS *nc = (NCCALCSIZE_PARAMS *)lparam; push_data( data, nc, sizeof(*nc) ); push_data( data, nc->lppos, sizeof(*nc->lppos) ); return sizeof(*nc) + sizeof(*nc->lppos); } case WM_GETDLGCODE: if (lparam) push_data( data, (MSG *)lparam, sizeof(MSG) ); return sizeof(MSG); case SBM_SETSCROLLINFO: push_data( data, (SCROLLINFO *)lparam, sizeof(SCROLLINFO) ); return 0; case SBM_GETSCROLLINFO: push_data( data, (SCROLLINFO *)lparam, sizeof(SCROLLINFO) ); return sizeof(SCROLLINFO); case EM_GETSEL: case SBM_GETRANGE: case CB_GETEDITSEL: { size_t size = 0; if (wparam) size += sizeof(DWORD); if (lparam) size += sizeof(DWORD); return size; } case EM_GETRECT: case LB_GETITEMRECT: case CB_GETDROPPEDCONTROLRECT: return sizeof(RECT); case EM_SETRECT: case EM_SETRECTNP: push_data( data, (RECT *)lparam, sizeof(RECT) ); return 0; case EM_GETLINE: { WORD *pw = (WORD *)lparam; push_data( data, pw, sizeof(*pw) ); return *pw * sizeof(WCHAR); } case EM_SETTABSTOPS: case LB_SETTABSTOPS: if (wparam) push_data( data, (UINT *)lparam, sizeof(UINT) * wparam ); return 0; case CB_ADDSTRING: case CB_INSERTSTRING: case CB_FINDSTRING: case CB_FINDSTRINGEXACT: case CB_SELECTSTRING: if (combobox_has_strings( hwnd )) push_string( data, (LPWSTR)lparam ); return 0; case CB_GETLBTEXT: if (!combobox_has_strings( hwnd )) return sizeof(ULONG_PTR); return (SendMessageW( hwnd, CB_GETLBTEXTLEN, wparam, 0 ) + 1) * sizeof(WCHAR); case LB_ADDSTRING: case LB_INSERTSTRING: case LB_FINDSTRING: case LB_FINDSTRINGEXACT: case LB_SELECTSTRING: if (listbox_has_strings( hwnd )) push_string( data, (LPWSTR)lparam ); return 0; case LB_GETTEXT: if (!listbox_has_strings( hwnd )) return sizeof(ULONG_PTR); return (SendMessageW( hwnd, LB_GETTEXTLEN, wparam, 0 ) + 1) * sizeof(WCHAR); case LB_GETSELITEMS: return wparam * sizeof(UINT); case WM_NEXTMENU: push_data( data, (MDINEXTMENU *)lparam, sizeof(MDINEXTMENU) ); return sizeof(MDINEXTMENU); case WM_SIZING: case WM_MOVING: push_data( data, (RECT *)lparam, sizeof(RECT) ); return sizeof(RECT); case WM_MDICREATE: { MDICREATESTRUCTW *cs = (MDICREATESTRUCTW *)lparam; push_data( data, cs, sizeof(*cs) ); if (HIWORD(cs->szTitle)) push_string( data, cs->szTitle ); if (HIWORD(cs->szClass)) push_string( data, cs->szClass ); return sizeof(*cs); } case WM_MDIGETACTIVE: if (lparam) return sizeof(BOOL); return 0; case WM_WINE_SETWINDOWPOS: push_data( data, (WINDOWPOS *)lparam, sizeof(WINDOWPOS) ); return 0; /* these contain an HFONT */ case WM_SETFONT: case WM_GETFONT: /* these contain an HDC */ case WM_PAINT: case WM_ERASEBKGND: case WM_ICONERASEBKGND: case WM_NCPAINT: case WM_CTLCOLORMSGBOX: case WM_CTLCOLOREDIT: case WM_CTLCOLORLISTBOX: case WM_CTLCOLORBTN: case WM_CTLCOLORDLG: case WM_CTLCOLORSCROLLBAR: case WM_CTLCOLORSTATIC: case WM_PRINT: case WM_PRINTCLIENT: /* these contain an HGLOBAL */ case WM_PAINTCLIPBOARD: case WM_SIZECLIPBOARD: /* these contain pointers */ case WM_DROPOBJECT: case WM_QUERYDROPOBJECT: case WM_DRAGLOOP: case WM_DRAGSELECT: case WM_DRAGMOVE: case WM_DEVICECHANGE: FIXME( "msg %x (%s) not supported yet\n", message, SPY_GetMsgName(message, hwnd) ); data->count = -1; return 0; } return 0; } /*********************************************************************** * unpack_message * * Unpack a message received from another process. */ static BOOL unpack_message( HWND hwnd, UINT message, WPARAM *wparam, LPARAM *lparam, void **buffer, size_t size ) { size_t minsize = 0; switch(message) { case WM_NCCREATE: case WM_CREATE: { CREATESTRUCTW *cs = *buffer; WCHAR *str = (WCHAR *)(cs + 1); if (size < sizeof(*cs)) return FALSE; size -= sizeof(*cs); if (HIWORD(cs->lpszName)) { if (!check_string( str, size )) return FALSE; cs->lpszName = str; size -= (strlenW(str) + 1) * sizeof(WCHAR); str += strlenW(str) + 1; } if (HIWORD(cs->lpszClass)) { if (!check_string( str, size )) return FALSE; cs->lpszClass = str; } break; } case WM_GETTEXT: case WM_ASKCBFORMATNAME: if (!get_buffer_space( buffer, (*wparam * sizeof(WCHAR)) )) return FALSE; break; case WM_SETTEXT: case WM_WININICHANGE: case WM_DEVMODECHANGE: case CB_DIR: case LB_DIR: case LB_ADDFILE: case EM_REPLACESEL: if (!check_string( *buffer, size )) return FALSE; break; case WM_GETMINMAXINFO: minsize = sizeof(MINMAXINFO); break; case WM_DRAWITEM: minsize = sizeof(DRAWITEMSTRUCT); break; case WM_MEASUREITEM: minsize = sizeof(MEASUREITEMSTRUCT); break; case WM_DELETEITEM: minsize = sizeof(DELETEITEMSTRUCT); break; case WM_COMPAREITEM: minsize = sizeof(COMPAREITEMSTRUCT); break; case WM_WINDOWPOSCHANGING: case WM_WINDOWPOSCHANGED: case WM_WINE_SETWINDOWPOS: minsize = sizeof(WINDOWPOS); break; case WM_COPYDATA: { COPYDATASTRUCT *cp = *buffer; if (size < sizeof(*cp)) return FALSE; if (cp->lpData) { minsize = sizeof(*cp) + cp->cbData; cp->lpData = cp + 1; } break; } case WM_NOTIFY: /* WM_NOTIFY cannot be sent across processes (MSDN) */ return FALSE; case WM_HELP: minsize = sizeof(HELPINFO); break; case WM_STYLECHANGING: case WM_STYLECHANGED: minsize = sizeof(STYLESTRUCT); break; case WM_NCCALCSIZE: if (!*wparam) minsize = sizeof(RECT); else { NCCALCSIZE_PARAMS *nc = *buffer; if (size < sizeof(*nc) + sizeof(*nc->lppos)) return FALSE; nc->lppos = (WINDOWPOS *)(nc + 1); } break; case WM_GETDLGCODE: if (!*lparam) return TRUE; minsize = sizeof(MSG); break; case SBM_SETSCROLLINFO: minsize = sizeof(SCROLLINFO); break; case SBM_GETSCROLLINFO: if (!get_buffer_space( buffer, sizeof(SCROLLINFO ))) return FALSE; break; case EM_GETSEL: case SBM_GETRANGE: case CB_GETEDITSEL: if (*wparam || *lparam) { if (!get_buffer_space( buffer, 2*sizeof(DWORD) )) return FALSE; if (*wparam) *wparam = (WPARAM)*buffer; if (*lparam) *lparam = (LPARAM)((DWORD *)*buffer + 1); } return TRUE; case EM_GETRECT: case LB_GETITEMRECT: case CB_GETDROPPEDCONTROLRECT: if (!get_buffer_space( buffer, sizeof(RECT) )) return FALSE; break; case EM_SETRECT: case EM_SETRECTNP: minsize = sizeof(RECT); break; case EM_GETLINE: { WORD len; if (size < sizeof(WORD)) return FALSE; len = *(WORD *)*buffer; if (!get_buffer_space( buffer, (len + 1) * sizeof(WCHAR) )) return FALSE; *lparam = (LPARAM)*buffer + sizeof(WORD); /* don't erase WORD at start of buffer */ return TRUE; } case EM_SETTABSTOPS: case LB_SETTABSTOPS: if (!*wparam) return TRUE; minsize = *wparam * sizeof(UINT); break; case CB_ADDSTRING: case CB_INSERTSTRING: case CB_FINDSTRING: case CB_FINDSTRINGEXACT: case CB_SELECTSTRING: case LB_ADDSTRING: case LB_INSERTSTRING: case LB_FINDSTRING: case LB_FINDSTRINGEXACT: case LB_SELECTSTRING: if (!*buffer) return TRUE; if (!check_string( *buffer, size )) return FALSE; break; case CB_GETLBTEXT: { size = sizeof(ULONG_PTR); if (combobox_has_strings( hwnd )) size = (SendMessageW( hwnd, CB_GETLBTEXTLEN, *wparam, 0 ) + 1) * sizeof(WCHAR); if (!get_buffer_space( buffer, size )) return FALSE; break; } case LB_GETTEXT: { size = sizeof(ULONG_PTR); if (listbox_has_strings( hwnd )) size = (SendMessageW( hwnd, LB_GETTEXTLEN, *wparam, 0 ) + 1) * sizeof(WCHAR); if (!get_buffer_space( buffer, size )) return FALSE; break; } case LB_GETSELITEMS: if (!get_buffer_space( buffer, *wparam * sizeof(UINT) )) return FALSE; break; case WM_NEXTMENU: minsize = sizeof(MDINEXTMENU); if (!get_buffer_space( buffer, sizeof(MDINEXTMENU) )) return FALSE; break; case WM_SIZING: case WM_MOVING: minsize = sizeof(RECT); if (!get_buffer_space( buffer, sizeof(RECT) )) return FALSE; break; case WM_MDICREATE: { MDICREATESTRUCTW *cs = *buffer; WCHAR *str = (WCHAR *)(cs + 1); if (size < sizeof(*cs)) return FALSE; size -= sizeof(*cs); if (HIWORD(cs->szTitle)) { if (!check_string( str, size )) return FALSE; cs->szTitle = str; size -= (strlenW(str) + 1) * sizeof(WCHAR); str += strlenW(str) + 1; } if (HIWORD(cs->szClass)) { if (!check_string( str, size )) return FALSE; cs->szClass = str; } break; } case WM_MDIGETACTIVE: if (!*lparam) return TRUE; if (!get_buffer_space( buffer, sizeof(BOOL) )) return FALSE; break; /* these contain an HFONT */ case WM_SETFONT: case WM_GETFONT: /* these contain an HDC */ case WM_PAINT: case WM_ERASEBKGND: case WM_ICONERASEBKGND: case WM_NCPAINT: case WM_CTLCOLORMSGBOX: case WM_CTLCOLOREDIT: case WM_CTLCOLORLISTBOX: case WM_CTLCOLORBTN: case WM_CTLCOLORDLG: case WM_CTLCOLORSCROLLBAR: case WM_CTLCOLORSTATIC: case WM_PRINT: case WM_PRINTCLIENT: /* these contain an HGLOBAL */ case WM_PAINTCLIPBOARD: case WM_SIZECLIPBOARD: /* these contain pointers */ case WM_DROPOBJECT: case WM_QUERYDROPOBJECT: case WM_DRAGLOOP: case WM_DRAGSELECT: case WM_DRAGMOVE: case WM_DEVICECHANGE: FIXME( "msg %x (%s) not supported yet\n", message, SPY_GetMsgName(message, hwnd) ); return FALSE; default: return TRUE; /* message doesn't need any unpacking */ } /* default exit for most messages: check minsize and store buffer in lparam */ if (size < minsize) return FALSE; *lparam = (LPARAM)*buffer; return TRUE; } /*********************************************************************** * pack_reply * * Pack a reply to a message for sending to another process. */ static void pack_reply( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam, LRESULT res, struct packed_message *data ) { data->count = 0; switch(message) { case WM_NCCREATE: case WM_CREATE: push_data( data, (CREATESTRUCTW *)lparam, sizeof(CREATESTRUCTW) ); break; case WM_GETTEXT: case CB_GETLBTEXT: case LB_GETTEXT: push_data( data, (WCHAR *)lparam, (res + 1) * sizeof(WCHAR) ); break; case WM_GETMINMAXINFO: push_data( data, (MINMAXINFO *)lparam, sizeof(MINMAXINFO) ); break; case WM_MEASUREITEM: push_data( data, (MEASUREITEMSTRUCT *)lparam, sizeof(MEASUREITEMSTRUCT) ); break; case WM_WINDOWPOSCHANGING: case WM_WINDOWPOSCHANGED: push_data( data, (WINDOWPOS *)lparam, sizeof(WINDOWPOS) ); break; case WM_GETDLGCODE: if (lparam) push_data( data, (MSG *)lparam, sizeof(MSG) ); break; case SBM_GETSCROLLINFO: push_data( data, (SCROLLINFO *)lparam, sizeof(SCROLLINFO) ); break; case EM_GETRECT: case LB_GETITEMRECT: case CB_GETDROPPEDCONTROLRECT: case WM_SIZING: case WM_MOVING: push_data( data, (RECT *)lparam, sizeof(RECT) ); break; case EM_GETLINE: { WORD *ptr = (WORD *)lparam; push_data( data, ptr, ptr[-1] * sizeof(WCHAR) ); break; } case LB_GETSELITEMS: push_data( data, (UINT *)lparam, wparam * sizeof(UINT) ); break; case WM_MDIGETACTIVE: if (lparam) push_data( data, (BOOL *)lparam, sizeof(BOOL) ); break; case WM_NCCALCSIZE: if (!wparam) push_data( data, (RECT *)lparam, sizeof(RECT) ); else { NCCALCSIZE_PARAMS *nc = (NCCALCSIZE_PARAMS *)lparam; push_data( data, nc, sizeof(*nc) ); push_data( data, nc->lppos, sizeof(*nc->lppos) ); } break; case EM_GETSEL: case SBM_GETRANGE: case CB_GETEDITSEL: if (wparam) push_data( data, (DWORD *)wparam, sizeof(DWORD) ); if (lparam) push_data( data, (DWORD *)lparam, sizeof(DWORD) ); break; case WM_NEXTMENU: push_data( data, (MDINEXTMENU *)lparam, sizeof(MDINEXTMENU) ); break; case WM_MDICREATE: push_data( data, (MDICREATESTRUCTW *)lparam, sizeof(MDICREATESTRUCTW) ); break; case WM_ASKCBFORMATNAME: push_data( data, (WCHAR *)lparam, (strlenW((WCHAR *)lparam) + 1) * sizeof(WCHAR) ); break; } } /*********************************************************************** * unpack_reply * * Unpack a message reply received from another process. */ static void unpack_reply( HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam, void *buffer, size_t size ) { switch(message) { case WM_NCCREATE: case WM_CREATE: { CREATESTRUCTW *cs = (CREATESTRUCTW *)lparam; LPCWSTR name = cs->lpszName, class = cs->lpszClass; memcpy( cs, buffer, min( sizeof(*cs), size )); cs->lpszName = name; /* restore the original pointers */ cs->lpszClass = class; break; } case WM_GETTEXT: case WM_ASKCBFORMATNAME: memcpy( (WCHAR *)lparam, buffer, min( wparam*sizeof(WCHAR), size )); break; case WM_GETMINMAXINFO: memcpy( (MINMAXINFO *)lparam, buffer, min( sizeof(MINMAXINFO), size )); break; case WM_MEASUREITEM: memcpy( (MEASUREITEMSTRUCT *)lparam, buffer, min( sizeof(MEASUREITEMSTRUCT), size )); break; case WM_WINDOWPOSCHANGING: case WM_WINDOWPOSCHANGED: memcpy( (WINDOWPOS *)lparam, buffer, min( sizeof(WINDOWPOS), size )); break; case WM_GETDLGCODE: if (lparam) memcpy( (MSG *)lparam, buffer, min( sizeof(MSG), size )); break; case SBM_GETSCROLLINFO: memcpy( (SCROLLINFO *)lparam, buffer, min( sizeof(SCROLLINFO), size )); break; case EM_GETRECT: case CB_GETDROPPEDCONTROLRECT: case LB_GETITEMRECT: case WM_SIZING: case WM_MOVING: memcpy( (RECT *)lparam, buffer, min( sizeof(RECT), size )); break; case EM_GETLINE: size = min( size, (size_t)*(WORD *)lparam ); memcpy( (WCHAR *)lparam, buffer, size ); break; case LB_GETSELITEMS: memcpy( (UINT *)lparam, buffer, min( wparam*sizeof(UINT), size )); break; case LB_GETTEXT: case CB_GETLBTEXT: memcpy( (WCHAR *)lparam, buffer, size ); break; case WM_NEXTMENU: memcpy( (MDINEXTMENU *)lparam, buffer, min( sizeof(MDINEXTMENU), size )); break; case WM_MDIGETACTIVE: if (lparam) memcpy( (BOOL *)lparam, buffer, min( sizeof(BOOL), size )); break; case WM_NCCALCSIZE: if (!wparam) memcpy( (RECT *)lparam, buffer, min( sizeof(RECT), size )); else { NCCALCSIZE_PARAMS *nc = (NCCALCSIZE_PARAMS *)lparam; WINDOWPOS *wp = nc->lppos; memcpy( nc, buffer, min( sizeof(*nc), size )); if (size > sizeof(*nc)) { size -= sizeof(*nc); memcpy( wp, (NCCALCSIZE_PARAMS*)buffer + 1, min( sizeof(*wp), size )); } nc->lppos = wp; /* restore the original pointer */ } break; case EM_GETSEL: case SBM_GETRANGE: case CB_GETEDITSEL: if (wparam) { memcpy( (DWORD *)wparam, buffer, min( sizeof(DWORD), size )); if (size <= sizeof(DWORD)) break; size -= sizeof(DWORD); buffer = (DWORD *)buffer + 1; } if (lparam) memcpy( (DWORD *)lparam, buffer, min( sizeof(DWORD), size )); break; case WM_MDICREATE: { MDICREATESTRUCTW *cs = (MDICREATESTRUCTW *)lparam; LPCWSTR title = cs->szTitle, class = cs->szClass; memcpy( cs, buffer, min( sizeof(*cs), size )); cs->szTitle = title; /* restore the original pointers */ cs->szClass = class; break; } default: ERR( "should not happen: unexpected message %x\n", message ); break; } } /*********************************************************************** * reply_message * * Send a reply to a sent message. */ static void reply_message( struct received_message_info *info, LRESULT result, BOOL remove ) { struct packed_message data; int i, replied = info->flags & ISMEX_REPLIED; if (info->flags & ISMEX_NOTIFY) return; /* notify messages don't get replies */ if (!remove && replied) return; /* replied already */ data.count = 0; info->flags |= ISMEX_REPLIED; if (info->type == MSG_OTHER_PROCESS && !replied) { pack_reply( info->msg.hwnd, info->msg.message, info->msg.wParam, info->msg.lParam, result, &data ); } SERVER_START_REQ( reply_message ) { req->result = result; req->remove = remove; for (i = 0; i < data.count; i++) wine_server_add_data( req, data.data[i], data.size[i] ); wine_server_call( req ); } SERVER_END_REQ; } /*********************************************************************** * handle_internal_message * * Handle an internal Wine message instead of calling the window proc. */ static LRESULT handle_internal_message( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { if (hwnd == GetDesktopWindow()) return 0; switch(msg) { case WM_WINE_DESTROYWINDOW: return WIN_DestroyWindow( hwnd ); case WM_WINE_SETWINDOWPOS: return USER_Driver.pSetWindowPos( (WINDOWPOS *)lparam ); case WM_WINE_SHOWWINDOW: return ShowWindow( hwnd, wparam ); case WM_WINE_SETPARENT: return (LRESULT)SetParent( hwnd, (HWND)wparam ); case WM_WINE_SETWINDOWLONG: return (LRESULT)SetWindowLongW( hwnd, wparam, lparam ); case WM_WINE_ENABLEWINDOW: return EnableWindow( hwnd, wparam ); default: FIXME( "unknown internal message %x\n", msg ); return 0; } } /* since the WM_DDE_ACK response to a WM_DDE_EXECUTE message should contain the handle * to the memory handle, we keep track (in the server side) of all pairs of handle * used (the client passes its value and the content of the memory handle), and * the server stored both values (the client, and the local one, created after the * content). When a ACK message is generated, the list of pair is searched for a * matching pair, so that the client memory handle can be returned. */ struct DDE_pair { HGLOBAL client_hMem; HGLOBAL server_hMem; }; static struct DDE_pair* dde_pairs; static int dde_num_alloc; static int dde_num_used; static CRITICAL_SECTION dde_crst = CRITICAL_SECTION_INIT("Raw_DDE_CritSect"); static BOOL dde_add_pair(HGLOBAL chm, HGLOBAL shm) { int i; #define GROWBY 4 EnterCriticalSection(&dde_crst); /* now remember the pair of hMem on both sides */ if (dde_num_used == dde_num_alloc) { struct DDE_pair* tmp = HeapReAlloc( GetProcessHeap(), 0, dde_pairs, (dde_num_alloc + GROWBY) * sizeof(struct DDE_pair)); if (!tmp) { LeaveCriticalSection(&dde_crst); return FALSE; } dde_pairs = tmp; /* zero out newly allocated part */ memset(&dde_pairs[dde_num_alloc], 0, GROWBY * sizeof(struct DDE_pair)); dde_num_alloc += GROWBY; } #undef GROWBY for (i = 0; i < dde_num_alloc; i++) { if (dde_pairs[i].server_hMem == 0) { dde_pairs[i].client_hMem = chm; dde_pairs[i].server_hMem = shm; dde_num_used++; break; } } LeaveCriticalSection(&dde_crst); return TRUE; } static HGLOBAL dde_get_pair(HGLOBAL shm) { int i; HGLOBAL ret = 0; EnterCriticalSection(&dde_crst); for (i = 0; i < dde_num_alloc; i++) { if (dde_pairs[i].server_hMem == shm) { /* free this pair */ dde_pairs[i].server_hMem = 0; dde_num_used--; ret = dde_pairs[i].client_hMem; break; } } LeaveCriticalSection(&dde_crst); return ret; } /*********************************************************************** * post_dde_message * * Post a DDE messag */ static BOOL post_dde_message( DWORD dest_tid, struct packed_message *data, const struct send_message_info *info ) { void* ptr = NULL; int size = 0; UINT uiLo, uiHi; LPARAM lp = 0; HGLOBAL hunlock = 0; int i; DWORD res; if (!UnpackDDElParam( info->msg, info->lparam, &uiLo, &uiHi )) return FALSE; lp = info->lparam; switch (info->msg) { /* DDE messages which don't require packing are: * WM_DDE_INITIATE * WM_DDE_TERMINATE * WM_DDE_REQUEST * WM_DDE_UNADVISE */ case WM_DDE_ACK: if (HIWORD(uiHi)) { /* uiHi should contain a hMem from WM_DDE_EXECUTE */ HGLOBAL h = dde_get_pair( uiHi ); if (h) { /* send back the value of h on the other side */ push_data( data, &h, sizeof(HGLOBAL) ); lp = uiLo; TRACE( "send dde-ack %x %08x => %08lx\n", uiLo, uiHi, (DWORD)h ); } } else { /* uiHi should contain either an atom or 0 */ TRACE( "send dde-ack %x atom=%x\n", uiLo, uiHi ); lp = MAKELONG( uiLo, uiHi ); } break; case WM_DDE_ADVISE: case WM_DDE_DATA: case WM_DDE_POKE: size = 0; if (uiLo) { size = GlobalSize( (HGLOBAL)uiLo ) ; if ((info->msg == WM_DDE_ADVISE && size < sizeof(DDEADVISE)) || (info->msg == WM_DDE_DATA && size < sizeof(DDEDATA)) || (info->msg == WM_DDE_POKE && size < sizeof(DDEPOKE)) ) return FALSE; } else if (info->msg != WM_DDE_DATA) return FALSE; lp = uiHi; if (uiLo) { if ((ptr = GlobalLock( (HGLOBAL)uiLo) )) { push_data( data, ptr, size ); hunlock = (HGLOBAL)uiLo; } } TRACE( "send ddepack %u %x\n", size, uiHi ); break; case WM_DDE_EXECUTE: if (info->lparam) { if ((ptr = GlobalLock( (HGLOBAL)info->lparam) )) { push_data(data, ptr, GlobalSize( (HGLOBAL)info->lparam )); /* so that the other side can send it back on ACK */ lp = info->lparam; hunlock = (HGLOBAL)info->lparam; } } break; } SERVER_START_REQ( send_message ) { req->id = (void *)dest_tid; req->type = info->type; req->win = info->hwnd; req->msg = info->msg; req->wparam = info->wparam; req->lparam = lp; req->time = GetCurrentTime(); req->timeout = -1; for (i = 0; i < data->count; i++) wine_server_add_data( req, data->data[i], data->size[i] ); if ((res = wine_server_call( req ))) { if (res == STATUS_INVALID_PARAMETER) /* FIXME: find a STATUS_ value for this one */ SetLastError( ERROR_INVALID_THREAD_ID ); else SetLastError( RtlNtStatusToDosError(res) ); } else FreeDDElParam(info->msg, info->lparam); } SERVER_END_REQ; if (hunlock) GlobalUnlock(hunlock); return !res; } /*********************************************************************** * unpack_dde_message * * Unpack a posted DDE message received from another process. */ static BOOL unpack_dde_message( HWND hwnd, UINT message, WPARAM *wparam, LPARAM *lparam, void **buffer, size_t size ) { UINT uiLo, uiHi; HGLOBAL hMem = 0; void* ptr; switch (message) { case WM_DDE_ACK: if (size) { /* hMem is being passed */ if (size != sizeof(HGLOBAL)) return FALSE; if (!buffer || !*buffer) return FALSE; uiLo = *lparam; memcpy( &hMem, *buffer, size ); uiHi = hMem; TRACE("recv dde-ack %u mem=%x[%lx]\n", uiLo, uiHi, GlobalSize( uiHi )); } else { uiLo = LOWORD( *lparam ); uiHi = HIWORD( *lparam ); TRACE("recv dde-ack %x atom=%x\n", uiLo, uiHi); } *lparam = PackDDElParam( WM_DDE_ACK, uiLo, uiHi ); break; case WM_DDE_ADVISE: case WM_DDE_DATA: case WM_DDE_POKE: if ((!buffer || !*buffer) && message != WM_DDE_DATA) return FALSE; uiHi = *lparam; TRACE( "recv ddepack %u %x\n", size, uiHi ); if (size) { hMem = GlobalAlloc( GMEM_MOVEABLE|GMEM_DDESHARE, size ); if (hMem && (ptr = GlobalLock( hMem ))) { memcpy( ptr, *buffer, size ); GlobalUnlock( hMem ); } else return FALSE; } uiLo = hMem; *lparam = PackDDElParam( message, uiLo, uiHi ); break; case WM_DDE_EXECUTE: if (size) { if (!buffer || !*buffer) return FALSE; hMem = GlobalAlloc( GMEM_MOVEABLE|GMEM_DDESHARE, size ); if (hMem && (ptr = GlobalLock( hMem ))) { memcpy( ptr, *buffer, size ); GlobalUnlock( hMem ); TRACE( "exec: pairing c=%08lx s=%08lx\n", *lparam, (DWORD)hMem ); if (!dde_add_pair( *lparam, hMem )) { GlobalFree( hMem ); return FALSE; } } } else return FALSE; *lparam = hMem; break; } return TRUE; } /*********************************************************************** * call_window_proc * * Call a window procedure and the corresponding hooks. */ static LRESULT call_window_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, BOOL unicode ) { LRESULT result; WNDPROC winproc; if (msg & 0x80000000) return handle_internal_message( hwnd, msg, wparam, lparam ); /* first the WH_CALLWNDPROC hook */ if (HOOK_IsHooked( WH_CALLWNDPROC )) { CWPSTRUCT cwp; cwp.lParam = lparam; cwp.wParam = wparam; cwp.message = msg; cwp.hwnd = WIN_GetFullHandle( hwnd ); if (unicode) HOOK_CallHooksW( WH_CALLWNDPROC, HC_ACTION, 1, (LPARAM)&cwp ); else HOOK_CallHooksA( WH_CALLWNDPROC, HC_ACTION, 1, (LPARAM)&cwp ); lparam = cwp.lParam; wparam = cwp.wParam; msg = cwp.message; hwnd = cwp.hwnd; } /* now call the window procedure */ if (unicode) { if (!(winproc = (WNDPROC)GetWindowLongW( hwnd, GWL_WNDPROC ))) return 0; result = CallWindowProcW( winproc, hwnd, msg, wparam, lparam ); } else { if (!(winproc = (WNDPROC)GetWindowLongA( hwnd, GWL_WNDPROC ))) return 0; result = CallWindowProcA( winproc, hwnd, msg, wparam, lparam ); } /* and finally the WH_CALLWNDPROCRET hook */ if (HOOK_IsHooked( WH_CALLWNDPROCRET )) { CWPRETSTRUCT cwp; cwp.lResult = result; cwp.lParam = lparam; cwp.wParam = wparam; cwp.message = msg; cwp.hwnd = WIN_GetFullHandle( hwnd ); if (unicode) HOOK_CallHooksW( WH_CALLWNDPROCRET, HC_ACTION, 1, (LPARAM)&cwp ); else HOOK_CallHooksA( WH_CALLWNDPROCRET, HC_ACTION, 1, (LPARAM)&cwp ); } return result; } /*********************************************************************** * MSG_peek_message * * Peek for a message matching the given parameters. Return FALSE if none available. * All pending sent messages are processed before returning. */ BOOL MSG_peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, int flags ) { LRESULT result; ULONG_PTR extra_info = 0; MESSAGEQUEUE *queue = QUEUE_Current(); struct received_message_info info, *old_info; if (!first && !last) last = ~0; for (;;) { NTSTATUS res; void *buffer = NULL; size_t size = 0, buffer_size = 0; do /* loop while buffer is too small */ { if (buffer_size && !(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return FALSE; SERVER_START_REQ( get_message ) { req->flags = flags; req->get_win = hwnd; req->get_first = first; req->get_last = last; if (buffer_size) wine_server_set_reply( req, buffer, buffer_size ); if (!(res = wine_server_call( req ))) { size = wine_server_reply_size( reply ); info.type = reply->type; info.msg.hwnd = reply->win; info.msg.message = reply->msg; info.msg.wParam = reply->wparam; info.msg.lParam = reply->lparam; info.msg.time = reply->time; info.msg.pt.x = reply->x; info.msg.pt.y = reply->y; extra_info = reply->info; } else { if (buffer) HeapFree( GetProcessHeap(), 0, buffer ); buffer_size = reply->total; } } SERVER_END_REQ; } while (res == STATUS_BUFFER_OVERFLOW); if (res) return FALSE; TRACE( "got type %d msg %x hwnd %x wp %x lp %lx\n", info.type, info.msg.message, info.msg.hwnd, info.msg.wParam, info.msg.lParam ); switch(info.type) { case MSG_ASCII: case MSG_UNICODE: info.flags = ISMEX_SEND; break; case MSG_NOTIFY: info.flags = ISMEX_NOTIFY; break; case MSG_CALLBACK: info.flags = ISMEX_CALLBACK; break; case MSG_OTHER_PROCESS: info.flags = ISMEX_SEND; if (!unpack_message( info.msg.hwnd, info.msg.message, &info.msg.wParam, &info.msg.lParam, &buffer, size )) { ERR( "invalid packed message %x (%s) hwnd %x wp %x lp %lx size %d\n", info.msg.message, SPY_GetMsgName(info.msg.message, info.msg.hwnd), info.msg.hwnd, info.msg.wParam, info.msg.lParam, size ); /* ignore it */ reply_message( &info, 0, TRUE ); goto next; } break; case MSG_HARDWARE_RAW: if (!MSG_process_raw_hardware_message( &info.msg, extra_info, hwnd, first, last, flags & GET_MSG_REMOVE )) goto next; /* fall through */ case MSG_HARDWARE_COOKED: if (!MSG_process_cooked_hardware_message( &info.msg, extra_info, flags & GET_MSG_REMOVE )) { flags |= GET_MSG_REMOVE_LAST; goto next; } queue->GetMessagePosVal = MAKELONG( info.msg.pt.x, info.msg.pt.y ); /* fall through */ case MSG_POSTED: queue->GetMessageExtraInfoVal = extra_info; if (info.msg.message >= WM_DDE_FIRST && info.msg.message <= WM_DDE_LAST) { if (!unpack_dde_message( info.msg.hwnd, info.msg.message, &info.msg.wParam, &info.msg.lParam, &buffer, size )) { ERR( "invalid packed dde-message %x (%s) hwnd %x wp %x lp %lx size %d\n", info.msg.message, SPY_GetMsgName(info.msg.message, info.msg.hwnd), info.msg.hwnd, info.msg.wParam, info.msg.lParam, size ); /* ignore it */ continue; } } *msg = info.msg; if (buffer) HeapFree( GetProcessHeap(), 0, buffer ); return TRUE; } /* if we get here, we have a sent message; call the window procedure */ old_info = queue->receive_info; queue->receive_info = &info; result = call_window_proc( info.msg.hwnd, info.msg.message, info.msg.wParam, info.msg.lParam, (info.type != MSG_ASCII) ); reply_message( &info, result, TRUE ); queue->receive_info = old_info; next: if (buffer) HeapFree( GetProcessHeap(), 0, buffer ); } } /*********************************************************************** * wait_message_reply * * Wait until a sent message gets replied to. */ static void wait_message_reply( UINT flags ) { MESSAGEQUEUE *queue; if (!(queue = QUEUE_Current())) return; for (;;) { unsigned int wake_bits = 0, changed_bits = 0; DWORD dwlc, res; SERVER_START_REQ( set_queue_mask ) { req->wake_mask = QS_SMRESULT | ((flags & SMTO_BLOCK) ? 0 : QS_SENDMESSAGE); req->changed_mask = req->wake_mask; req->skip_wait = 1; if (!wine_server_call( req )) { wake_bits = reply->wake_bits; changed_bits = reply->changed_bits; } } SERVER_END_REQ; if (wake_bits & QS_SMRESULT) return; /* got a result */ if (wake_bits & QS_SENDMESSAGE) { /* Process the sent message immediately */ MSG msg; MSG_peek_message( &msg, 0, 0, 0, GET_MSG_REMOVE | GET_MSG_SENT_ONLY ); continue; } /* now wait for it */ ReleaseThunkLock( &dwlc ); if (USER_Driver.pMsgWaitForMultipleObjectsEx) res = USER_Driver.pMsgWaitForMultipleObjectsEx( 1, &queue->server_queue, INFINITE, 0, 0 ); else res = WaitForSingleObject( queue->server_queue, INFINITE ); if (dwlc) RestoreThunkLock( dwlc ); } } /*********************************************************************** * put_message_in_queue * * Put a sent message into the destination queue. * For inter-process message, reply_size is set to expected size of reply data. */ static BOOL put_message_in_queue( DWORD dest_tid, const struct send_message_info *info, size_t *reply_size ) { struct packed_message data; unsigned int res; int i, timeout = -1; if (info->type != MSG_NOTIFY && info->type != MSG_CALLBACK && info->type != MSG_POSTED && info->timeout != INFINITE) timeout = info->timeout; data.count = 0; if (info->type == MSG_OTHER_PROCESS) { *reply_size = pack_message( info->hwnd, info->msg, info->wparam, info->lparam, &data ); if (data.count == -1) { WARN( "cannot pack message %x\n", info->msg ); return FALSE; } } else if (info->type == MSG_POSTED && info->msg >= WM_DDE_FIRST && info->msg <= WM_DDE_LAST) { return post_dde_message( dest_tid, &data, info ); } SERVER_START_REQ( send_message ) { req->id = (void *)dest_tid; req->type = info->type; req->win = info->hwnd; req->msg = info->msg; req->wparam = info->wparam; req->lparam = info->lparam; req->time = GetCurrentTime(); req->timeout = timeout; for (i = 0; i < data.count; i++) wine_server_add_data( req, data.data[i], data.size[i] ); if ((res = wine_server_call( req ))) { if (res == STATUS_INVALID_PARAMETER) /* FIXME: find a STATUS_ value for this one */ SetLastError( ERROR_INVALID_THREAD_ID ); else SetLastError( RtlNtStatusToDosError(res) ); } } SERVER_END_REQ; return !res; } /*********************************************************************** * retrieve_reply * * Retrieve a message reply from the server. */ static LRESULT retrieve_reply( const struct send_message_info *info, size_t reply_size, LRESULT *result ) { NTSTATUS status; void *reply_data = NULL; if (reply_size) { if (!(reply_data = HeapAlloc( GetProcessHeap(), 0, reply_size ))) { WARN( "no memory for reply %d bytes, will be truncated\n", reply_size ); reply_size = 0; } } SERVER_START_REQ( get_message_reply ) { req->cancel = 1; if (reply_size) wine_server_set_reply( req, reply_data, reply_size ); if (!(status = wine_server_call( req ))) *result = reply->result; reply_size = wine_server_reply_size( reply ); } SERVER_END_REQ; if (!status && reply_size) unpack_reply( info->hwnd, info->msg, info->wparam, info->lparam, reply_data, reply_size ); if (reply_data) HeapFree( GetProcessHeap(), 0, reply_data ); TRACE( "hwnd %x msg %x (%s) wp %x lp %lx got reply %lx (err=%ld)\n", info->hwnd, info->msg, SPY_GetMsgName(info->msg, info->hwnd), info->wparam, info->lparam, *result, status ); if (!status) return 1; if (status == STATUS_TIMEOUT) SetLastError(0); /* timeout */ else SetLastError( RtlNtStatusToDosError(status) ); return 0; } /*********************************************************************** * send_inter_thread_message */ static LRESULT send_inter_thread_message( DWORD dest_tid, const struct send_message_info *info, LRESULT *res_ptr ) { LRESULT ret; int locks; size_t reply_size = 0; TRACE( "hwnd %x msg %x (%s) wp %x lp %lx\n", info->hwnd, info->msg, SPY_GetMsgName(info->msg, info->hwnd), info->wparam, info->lparam ); if (!put_message_in_queue( dest_tid, info, &reply_size )) return 0; /* there's no reply to wait for on notify/callback messages */ if (info->type == MSG_NOTIFY || info->type == MSG_CALLBACK) return 1; locks = WIN_SuspendWndsLock(); wait_message_reply( info->flags ); ret = retrieve_reply( info, reply_size, res_ptr ); WIN_RestoreWndsLock( locks ); return ret; } /*********************************************************************** * SendMessageTimeoutW (USER32.@) */ LRESULT WINAPI SendMessageTimeoutW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, UINT flags, UINT timeout, LPDWORD res_ptr ) { struct send_message_info info; DWORD dest_tid, dest_pid; LRESULT ret, result; info.type = MSG_UNICODE; info.hwnd = hwnd; info.msg = msg; info.wparam = wparam; info.lparam = lparam; info.flags = flags; info.timeout = timeout; if (is_broadcast(hwnd)) { EnumWindows( broadcast_message_callback, (LPARAM)&info ); if (res_ptr) *res_ptr = 1; return 1; } if (!(dest_tid = GetWindowThreadProcessId( hwnd, &dest_pid ))) return 0; if (USER_IsExitingThread( dest_tid )) return 0; SPY_EnterMessage( SPY_SENDMESSAGE, hwnd, msg, wparam, lparam ); if (dest_tid == GetCurrentThreadId()) { result = call_window_proc( hwnd, msg, wparam, lparam, TRUE ); ret = 1; } else { if (dest_pid != GetCurrentProcessId()) info.type = MSG_OTHER_PROCESS; ret = send_inter_thread_message( dest_tid, &info, &result ); } SPY_ExitMessage( SPY_RESULT_OK, hwnd, msg, result, wparam, lparam ); if (ret && res_ptr) *res_ptr = result; return ret; } /*********************************************************************** * SendMessageTimeoutA (USER32.@) */ LRESULT WINAPI SendMessageTimeoutA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, UINT flags, UINT timeout, LPDWORD res_ptr ) { struct send_message_info info; DWORD dest_tid, dest_pid; LRESULT ret, result; info.type = MSG_ASCII; info.hwnd = hwnd; info.msg = msg; info.wparam = wparam; info.lparam = lparam; info.flags = flags; info.timeout = timeout; if (is_broadcast(hwnd)) { EnumWindows( broadcast_message_callback, (LPARAM)&info ); if (res_ptr) *res_ptr = 1; return 1; } if (!(dest_tid = GetWindowThreadProcessId( hwnd, &dest_pid ))) return 0; if (USER_IsExitingThread( dest_tid )) return 0; SPY_EnterMessage( SPY_SENDMESSAGE, hwnd, msg, wparam, lparam ); if (dest_tid == GetCurrentThreadId()) { result = call_window_proc( hwnd, msg, wparam, lparam, FALSE ); ret = 1; } else if (dest_pid == GetCurrentProcessId()) { ret = send_inter_thread_message( dest_tid, &info, &result ); } else { /* inter-process message: need to map to Unicode */ info.type = MSG_OTHER_PROCESS; if (is_unicode_message( info.msg )) { if (WINPROC_MapMsg32ATo32W( info.hwnd, info.msg, &info.wparam, &info.lparam ) == -1) return 0; ret = send_inter_thread_message( dest_tid, &info, &result ); result = WINPROC_UnmapMsg32ATo32W( info.hwnd, info.msg, info.wparam, info.lparam, result ); } else ret = send_inter_thread_message( dest_tid, &info, &result ); } SPY_ExitMessage( SPY_RESULT_OK, hwnd, msg, result, wparam, lparam ); if (ret && res_ptr) *res_ptr = result; return ret; } /*********************************************************************** * SendMessageW (USER32.@) */ LRESULT WINAPI SendMessageW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { LRESULT res = 0; SendMessageTimeoutW( hwnd, msg, wparam, lparam, SMTO_NORMAL, INFINITE, &res ); return res; } /*********************************************************************** * SendMessageA (USER32.@) */ LRESULT WINAPI SendMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { LRESULT res = 0; SendMessageTimeoutA( hwnd, msg, wparam, lparam, SMTO_NORMAL, INFINITE, &res ); return res; } /*********************************************************************** * SendNotifyMessageA (USER32.@) */ BOOL WINAPI SendNotifyMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { return SendNotifyMessageW( hwnd, msg, map_wparam_AtoW( msg, wparam ), lparam ); } /*********************************************************************** * SendNotifyMessageW (USER32.@) */ BOOL WINAPI SendNotifyMessageW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { struct send_message_info info; DWORD dest_tid; LRESULT result; if (is_pointer_message(msg)) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; } info.type = MSG_NOTIFY; info.hwnd = hwnd; info.msg = msg; info.wparam = wparam; info.lparam = lparam; if (is_broadcast(hwnd)) { EnumWindows( broadcast_message_callback, (LPARAM)&info ); return TRUE; } if (!(dest_tid = GetWindowThreadProcessId( hwnd, NULL ))) return FALSE; if (USER_IsExitingThread( dest_tid )) return TRUE; if (dest_tid == GetCurrentThreadId()) { call_window_proc( hwnd, msg, wparam, lparam, TRUE ); return TRUE; } return send_inter_thread_message( dest_tid, &info, &result ); } /*********************************************************************** * SendMessageCallbackA (USER32.@) */ BOOL WINAPI SendMessageCallbackA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, SENDASYNCPROC callback, ULONG_PTR data ) { return SendMessageCallbackW( hwnd, msg, map_wparam_AtoW( msg, wparam ), lparam, callback, data ); } /*********************************************************************** * SendMessageCallbackW (USER32.@) */ BOOL WINAPI SendMessageCallbackW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, SENDASYNCPROC callback, ULONG_PTR data ) { struct send_message_info info; LRESULT result; DWORD dest_tid; if (is_pointer_message(msg)) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; } info.type = MSG_CALLBACK; info.hwnd = hwnd; info.msg = msg; info.wparam = wparam; info.lparam = lparam; info.callback = callback; info.data = data; if (is_broadcast(hwnd)) { EnumWindows( broadcast_message_callback, (LPARAM)&info ); return TRUE; } if (!(dest_tid = GetWindowThreadProcessId( hwnd, NULL ))) return FALSE; if (USER_IsExitingThread( dest_tid )) return TRUE; if (dest_tid == GetCurrentThreadId()) { result = call_window_proc( hwnd, msg, wparam, lparam, TRUE ); callback( hwnd, msg, data, result ); return TRUE; } FIXME( "callback will not be called\n" ); return send_inter_thread_message( dest_tid, &info, &result ); } /*********************************************************************** * ReplyMessage (USER32.@) */ BOOL WINAPI ReplyMessage( LRESULT result ) { MESSAGEQUEUE *queue = QUEUE_Current(); struct received_message_info *info = queue->receive_info; if (!info) return FALSE; reply_message( info, result, FALSE ); return TRUE; } /*********************************************************************** * InSendMessage (USER32.@) */ BOOL WINAPI InSendMessage(void) { return (InSendMessageEx(NULL) & (ISMEX_SEND|ISMEX_REPLIED)) == ISMEX_SEND; } /*********************************************************************** * InSendMessageEx (USER32.@) */ DWORD WINAPI InSendMessageEx( LPVOID reserved ) { MESSAGEQUEUE *queue = QUEUE_Current(); struct received_message_info *info = queue->receive_info; if (info) return info->flags; return ISMEX_NOSEND; } /*********************************************************************** * PostMessageA (USER32.@) */ BOOL WINAPI PostMessageA( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { return PostMessageW( hwnd, msg, map_wparam_AtoW( msg, wparam ), lparam ); } /*********************************************************************** * PostMessageW (USER32.@) */ BOOL WINAPI PostMessageW( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam ) { struct send_message_info info; DWORD dest_tid; if (is_pointer_message( msg )) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } info.type = MSG_POSTED; info.hwnd = hwnd; info.msg = msg; info.wparam = wparam; info.lparam = lparam; if (is_broadcast(hwnd)) { EnumWindows( broadcast_message_callback, (LPARAM)&info ); return TRUE; } if (!(dest_tid = GetWindowThreadProcessId( hwnd, NULL ))) return FALSE; if (USER_IsExitingThread( dest_tid )) return TRUE; return put_message_in_queue( dest_tid, &info, NULL ); } /********************************************************************** * PostThreadMessageA (USER32.@) */ BOOL WINAPI PostThreadMessageA( DWORD thread, UINT msg, WPARAM wparam, LPARAM lparam ) { return PostThreadMessageW( thread, msg, map_wparam_AtoW( msg, wparam ), lparam ); } /********************************************************************** * PostThreadMessageW (USER32.@) */ BOOL WINAPI PostThreadMessageW( DWORD thread, UINT msg, WPARAM wparam, LPARAM lparam ) { struct send_message_info info; if (is_pointer_message( msg )) { SetLastError( ERROR_INVALID_PARAMETER ); return FALSE; } if (USER_IsExitingThread( thread )) return TRUE; info.type = MSG_POSTED; info.hwnd = 0; info.msg = msg; info.wparam = wparam; info.lparam = lparam; return put_message_in_queue( thread, &info, NULL ); } /*********************************************************************** * PostQuitMessage (USER32.@) */ void WINAPI PostQuitMessage( INT exitCode ) { PostThreadMessageW( GetCurrentThreadId(), WM_QUIT, exitCode, 0 ); } /*********************************************************************** * PeekMessageW (USER32.@) */ BOOL WINAPI PeekMessageW( MSG *msg_out, HWND hwnd, UINT first, UINT last, UINT flags ) { MESSAGEQUEUE *queue; MSG msg; int locks; /* check for graphics events */ if (USER_Driver.pMsgWaitForMultipleObjectsEx) USER_Driver.pMsgWaitForMultipleObjectsEx( 0, NULL, 0, 0, 0 ); hwnd = WIN_GetFullHandle( hwnd ); locks = WIN_SuspendWndsLock(); if (!MSG_peek_message( &msg, hwnd, first, last, (flags & PM_REMOVE) ? GET_MSG_REMOVE : 0 )) { /* FIXME: should be done before checking for hw events */ MSG_JournalPlayBackMsg(); if (!(flags & PM_NOYIELD)) { DWORD count; ReleaseThunkLock(&count); if (count) RestoreThunkLock(count); } WIN_RestoreWndsLock( locks ); return FALSE; } WIN_RestoreWndsLock( locks ); /* need to fill the window handle for WM_PAINT message */ if (msg.message == WM_PAINT) { if (IsIconic( msg.hwnd ) && GetClassLongA( msg.hwnd, GCL_HICON )) { msg.message = WM_PAINTICON; msg.wParam = 1; } /* clear internal paint flag */ RedrawWindow( msg.hwnd, NULL, 0, RDW_NOINTERNALPAINT | RDW_NOCHILDREN ); } if ((queue = QUEUE_Current())) { queue->GetMessageTimeVal = msg.time; msg.pt.x = LOWORD( queue->GetMessagePosVal ); msg.pt.y = HIWORD( queue->GetMessagePosVal ); } HOOK_CallHooksW( WH_GETMESSAGE, HC_ACTION, flags & PM_REMOVE, (LPARAM)&msg ); /* copy back our internal safe copy of message data to msg_out. * msg_out is a variable from the *program*, so it can't be used * internally as it can get "corrupted" by our use of SendMessage() * (back to the program) inside the message handling itself. */ *msg_out = msg; return TRUE; } /*********************************************************************** * PeekMessageA (USER32.@) */ BOOL WINAPI PeekMessageA( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags ) { BOOL ret = PeekMessageW( msg, hwnd, first, last, flags ); if (ret) msg->wParam = map_wparam_WtoA( msg->message, msg->wParam ); return ret; } /*********************************************************************** * GetMessageW (USER32.@) */ BOOL WINAPI GetMessageW( MSG *msg, HWND hwnd, UINT first, UINT last ) { MESSAGEQUEUE *queue = QUEUE_Current(); int mask, locks; mask = QS_POSTMESSAGE | QS_SENDMESSAGE; /* Always selected */ if (first || last) { if ((first <= WM_KEYLAST) && (last >= WM_KEYFIRST)) mask |= QS_KEY; if ( ((first <= WM_MOUSELAST) && (last >= WM_MOUSEFIRST)) || ((first <= WM_NCMOUSELAST) && (last >= WM_NCMOUSEFIRST)) ) mask |= QS_MOUSE; if ((first <= WM_TIMER) && (last >= WM_TIMER)) mask |= QS_TIMER; if ((first <= WM_SYSTIMER) && (last >= WM_SYSTIMER)) mask |= QS_TIMER; if ((first <= WM_PAINT) && (last >= WM_PAINT)) mask |= QS_PAINT; } else mask |= QS_MOUSE | QS_KEY | QS_TIMER | QS_PAINT; locks = WIN_SuspendWndsLock(); while (!PeekMessageW( msg, hwnd, first, last, PM_REMOVE )) { /* wait until one of the bits is set */ unsigned int wake_bits = 0, changed_bits = 0; DWORD dwlc; SERVER_START_REQ( set_queue_mask ) { req->wake_mask = QS_SENDMESSAGE; req->changed_mask = mask; req->skip_wait = 1; if (!wine_server_call( req )) { wake_bits = reply->wake_bits; changed_bits = reply->changed_bits; } } SERVER_END_REQ; if (changed_bits & mask) continue; if (wake_bits & QS_SENDMESSAGE) continue; TRACE( "(%04x) mask=%08x, bits=%08x, changed=%08x, waiting\n", queue->self, mask, wake_bits, changed_bits ); ReleaseThunkLock( &dwlc ); if (USER_Driver.pMsgWaitForMultipleObjectsEx) USER_Driver.pMsgWaitForMultipleObjectsEx( 1, &queue->server_queue, INFINITE, 0, 0 ); else WaitForSingleObject( queue->server_queue, INFINITE ); if (dwlc) RestoreThunkLock( dwlc ); } WIN_RestoreWndsLock( locks ); return (msg->message != WM_QUIT); } /*********************************************************************** * GetMessageA (USER32.@) */ BOOL WINAPI GetMessageA( MSG *msg, HWND hwnd, UINT first, UINT last ) { GetMessageW( msg, hwnd, first, last ); msg->wParam = map_wparam_WtoA( msg->message, msg->wParam ); return (msg->message != WM_QUIT); } /*********************************************************************** * IsDialogMessage (USER32.@) * IsDialogMessageA (USER32.@) */ BOOL WINAPI IsDialogMessageA( HWND hwndDlg, LPMSG pmsg ) { MSG msg = *pmsg; msg.wParam = map_wparam_AtoW( msg.message, msg.wParam ); return IsDialogMessageW( hwndDlg, &msg ); } /*********************************************************************** * SetMessageQueue (USER32.@) */ BOOL WINAPI SetMessageQueue( INT size ) { /* now obsolete the message queue will be expanded dynamically as necessary */ return TRUE; }