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Sweden-Number/windows/queue.c

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/*
* Message queues related functions
*
* Copyright 1993, 1994 Alexandre Julliard
*/
#include <stdlib.h>
#include <signal.h>
#include "miscemu.h"
#include "module.h"
#include "queue.h"
#include "task.h"
#include "win.h"
#include "clipboard.h"
#include "hook.h"
#include "heap.h"
#include "thread.h"
#include "process.h"
#include "debug.h"
#define MAX_QUEUE_SIZE 120 /* Max. size of a message queue */
static HQUEUE16 hFirstQueue = 0;
static HQUEUE16 hExitingQueue = 0;
static HQUEUE16 hmemSysMsgQueue = 0;
static MESSAGEQUEUE *sysMsgQueue = NULL;
static MESSAGEQUEUE *pMouseQueue = NULL; /* Queue for last mouse message */
static MESSAGEQUEUE *pKbdQueue = NULL; /* Queue for last kbd message */
MESSAGEQUEUE *pCursorQueue = NULL;
MESSAGEQUEUE *pActiveQueue = NULL;
/***********************************************************************
* QUEUE_DumpQueue
*/
void QUEUE_DumpQueue( HQUEUE16 hQueue )
{
MESSAGEQUEUE *pq;
if (!(pq = (MESSAGEQUEUE*) GlobalLock16( hQueue )) ||
GlobalSize16(hQueue) < sizeof(MESSAGEQUEUE)+pq->queueSize*sizeof(QMSG))
{
WARN(msg, "%04x is not a queue handle\n", hQueue );
return;
}
DUMP( "next: %12.4x Intertask SendMessage:\n"
"hTask: %11.4x ----------------------\n"
"msgSize: %9.4x hWnd: %10.4x\n"
"msgCount: %8.4x msg: %11.4x\n"
"msgNext: %9.4x wParam: %8.4x\n"
"msgFree: %9.4x lParam: %8.8x\n"
"qSize: %11.4x lRet: %10.8x\n"
"wWinVer: %9.4x ISMH: %10.4x\n"
"paints: %10.4x hSendTask: %5.4x\n"
"timers: %10.4x hPrevSend: %5.4x\n"
"wakeBits: %8.4x\n"
"wakeMask: %8.4x\n"
"hCurHook: %8.4x\n",
pq->next, pq->hTask, pq->msgSize, pq->hWnd,
pq->msgCount, pq->msg, pq->nextMessage, pq->wParam,
pq->nextFreeMessage, (unsigned)pq->lParam, pq->queueSize,
(unsigned)pq->SendMessageReturn, pq->wWinVersion, pq->InSendMessageHandle,
pq->wPaintCount, pq->hSendingTask, pq->wTimerCount,
pq->hPrevSendingTask, pq->wakeBits, pq->wakeMask, pq->hCurHook);
}
/***********************************************************************
* QUEUE_WalkQueues
*/
void QUEUE_WalkQueues(void)
{
char module[10];
HQUEUE16 hQueue = hFirstQueue;
DUMP( "Queue Size Msgs Task\n" );
while (hQueue)
{
MESSAGEQUEUE *queue = (MESSAGEQUEUE *)GlobalLock16( hQueue );
if (!queue)
{
WARN( msg, "Bad queue handle %04x\n", hQueue );
return;
}
if (!GetModuleName( queue->hTask, module, sizeof(module )))
strcpy( module, "???" );
DUMP( "%04x %5d %4d %04x %s\n", hQueue, queue->msgSize,
queue->msgCount, queue->hTask, module );
hQueue = queue->next;
}
DUMP( "\n" );
}
/***********************************************************************
* QUEUE_IsExitingQueue
*/
BOOL32 QUEUE_IsExitingQueue( HQUEUE16 hQueue )
{
return (hExitingQueue && (hQueue == hExitingQueue));
}
/***********************************************************************
* QUEUE_SetExitingQueue
*/
void QUEUE_SetExitingQueue( HQUEUE16 hQueue )
{
hExitingQueue = hQueue;
}
/***********************************************************************
* QUEUE_CreateMsgQueue
*
* Creates a message queue. Doesn't link it into queue list!
*/
static HQUEUE16 QUEUE_CreateMsgQueue( int size )
{
HQUEUE16 hQueue;
MESSAGEQUEUE * msgQueue;
int queueSize;
TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
TRACE(msg,"Creating message queue...\n");
queueSize = sizeof(MESSAGEQUEUE) + size * sizeof(QMSG);
if (!(hQueue = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, queueSize )))
return 0;
msgQueue = (MESSAGEQUEUE *) GlobalLock16( hQueue );
msgQueue->self = hQueue;
msgQueue->msgSize = sizeof(QMSG);
msgQueue->queueSize = size;
msgQueue->wakeBits = msgQueue->changeBits = QS_SMPARAMSFREE;
msgQueue->wWinVersion = pTask ? pTask->version : 0;
GlobalUnlock16( hQueue );
return hQueue;
}
/***********************************************************************
* QUEUE_DeleteMsgQueue
*
* Unlinks and deletes a message queue.
*
* Note: We need to mask asynchronous events to make sure PostMessage works
* even in the signal handler.
*/
BOOL32 QUEUE_DeleteMsgQueue( HQUEUE16 hQueue )
{
MESSAGEQUEUE * msgQueue = (MESSAGEQUEUE*)GlobalLock16(hQueue);
HQUEUE16 senderQ;
HQUEUE16 *pPrev;
TRACE(msg,"Deleting message queue %04x\n", hQueue);
if (!hQueue || !msgQueue)
{
WARN(msg, "invalid argument.\n");
return 0;
}
if( pCursorQueue == msgQueue ) pCursorQueue = NULL;
if( pActiveQueue == msgQueue ) pActiveQueue = NULL;
/* flush sent messages */
senderQ = msgQueue->hSendingTask;
while( senderQ )
{
MESSAGEQUEUE* sq = (MESSAGEQUEUE*)GlobalLock16(senderQ);
if( !sq ) break;
sq->SendMessageReturn = 0L;
QUEUE_SetWakeBit( sq, QS_SMRESULT );
senderQ = sq->hPrevSendingTask;
}
SIGNAL_MaskAsyncEvents( TRUE );
pPrev = &hFirstQueue;
while (*pPrev && (*pPrev != hQueue))
{
MESSAGEQUEUE *msgQ = (MESSAGEQUEUE*)GlobalLock16(*pPrev);
pPrev = &msgQ->next;
}
if (*pPrev) *pPrev = msgQueue->next;
msgQueue->self = 0;
SIGNAL_MaskAsyncEvents( FALSE );
GlobalFree16( hQueue );
return 1;
}
/***********************************************************************
* QUEUE_CreateSysMsgQueue
*
* Create the system message queue, and set the double-click speed.
* Must be called only once.
*/
BOOL32 QUEUE_CreateSysMsgQueue( int size )
{
if (size > MAX_QUEUE_SIZE) size = MAX_QUEUE_SIZE;
else if (size <= 0) size = 1;
if (!(hmemSysMsgQueue = QUEUE_CreateMsgQueue( size ))) return FALSE;
sysMsgQueue = (MESSAGEQUEUE *) GlobalLock16( hmemSysMsgQueue );
return TRUE;
}
/***********************************************************************
* QUEUE_GetSysQueue
*/
MESSAGEQUEUE *QUEUE_GetSysQueue(void)
{
return sysMsgQueue;
}
/***********************************************************************
* QUEUE_Signal
*/
void QUEUE_Signal( HTASK16 hTask )
{
PDB32 *pdb;
THREAD_ENTRY *entry;
int wakeup = FALSE;
TDB *pTask = (TDB *)GlobalLock16( hTask );
if ( !pTask ) return;
TRACE(msg, "calling SYNC_MsgWakeUp\n");
/* Wake up thread waiting for message */
/* NOTE: This should really wake up *the* thread that owns
the queue. Since we dont't have thread-local message
queues yet, we wake up all waiting threads ... */
SYSTEM_LOCK();
pdb = pTask->thdb->process;
entry = pdb? pdb->thread_list->next : NULL;
if (entry)
for (;;)
{
if (entry->thread->wait_struct.wait_msg)
{
SYNC_MsgWakeUp( entry->thread );
wakeup = TRUE;
}
if (entry == pdb->thread_list) break;
entry = entry->next;
}
SYSTEM_UNLOCK();
if ( !wakeup )
PostEvent( hTask );
}
/***********************************************************************
* QUEUE_Wait
*/
void QUEUE_Wait( void )
{
if ( THREAD_IsWin16( THREAD_Current() ) )
WaitEvent( 0 );
else
{
TRACE(msg, "current task is 32-bit, calling SYNC_DoWait\n");
SYNC_DoWait( 0, NULL, FALSE, INFINITE32, FALSE, TRUE );
}
}
/***********************************************************************
* QUEUE_SetWakeBit
*
* See "Windows Internals", p.449
*/
void QUEUE_SetWakeBit( MESSAGEQUEUE *queue, WORD bit )
{
TRACE(msg,"queue = %04x (wm=%04x), bit = %04x\n",
queue->self, queue->wakeMask, bit );
if (bit & QS_MOUSE) pMouseQueue = queue;
if (bit & QS_KEY) pKbdQueue = queue;
queue->changeBits |= bit;
queue->wakeBits |= bit;
if (queue->wakeMask & bit)
{
queue->wakeMask = 0;
QUEUE_Signal( queue->hTask );
}
}
/***********************************************************************
* QUEUE_ClearWakeBit
*/
void QUEUE_ClearWakeBit( MESSAGEQUEUE *queue, WORD bit )
{
queue->changeBits &= ~bit;
queue->wakeBits &= ~bit;
}
/***********************************************************************
* QUEUE_WaitBits
*
* See "Windows Internals", p.447
*/
void QUEUE_WaitBits( WORD bits )
{
MESSAGEQUEUE *queue;
TRACE(msg,"q %04x waiting for %04x\n", GetTaskQueue(0), bits);
for (;;)
{
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return;
if (queue->changeBits & bits)
{
/* One of the bits is set; we can return */
queue->wakeMask = 0;
return;
}
if (queue->wakeBits & QS_SENDMESSAGE)
{
/* Process the sent message immediately */
queue->wakeMask = 0;
QUEUE_ReceiveMessage( queue );
continue; /* nested sm crux */
}
queue->wakeMask = bits | QS_SENDMESSAGE;
if(queue->changeBits & bits) continue;
TRACE(msg,"%04x) wakeMask is %04x, waiting\n", queue->self, queue->wakeMask);
QUEUE_Wait();
}
}
/***********************************************************************
* QUEUE_ReceiveMessage
*
* This routine is called when a sent message is waiting for the queue.
*/
void QUEUE_ReceiveMessage( MESSAGEQUEUE *queue )
{
MESSAGEQUEUE *senderQ = NULL;
HQUEUE16 prevSender = 0;
QSMCTRL* prevCtrlPtr = NULL;
LRESULT result = 0;
TRACE(msg, "ReceiveMessage, queue %04x\n", queue->self );
if (!(queue->wakeBits & QS_SENDMESSAGE) ||
!(senderQ = (MESSAGEQUEUE*)GlobalLock16( queue->hSendingTask)))
{ TRACE(msg,"\trcm: nothing to do\n"); return; }
if( !senderQ->hPrevSendingTask )
{
queue->wakeBits &= ~QS_SENDMESSAGE; /* no more sent messages */
queue->changeBits &= ~QS_SENDMESSAGE;
}
/* Save current state on stack */
prevSender = queue->InSendMessageHandle;
prevCtrlPtr = queue->smResultCurrent;
/* Remove sending queue from the list */
queue->InSendMessageHandle = queue->hSendingTask;
queue->smResultCurrent = senderQ->smResultInit;
queue->hSendingTask = senderQ->hPrevSendingTask;
TRACE(msg, "\trcm: smResultCurrent = %08x, prevCtrl = %08x\n",
(unsigned)queue->smResultCurrent, (unsigned)prevCtrlPtr );
QUEUE_SetWakeBit( senderQ, QS_SMPARAMSFREE );
TRACE(msg, "\trcm: calling wndproc - %04x %04x %04x%04x %08x\n",
senderQ->hWnd, senderQ->msg, senderQ->wParamHigh,
senderQ->wParam, (unsigned)senderQ->lParam );
if (IsWindow32( senderQ->hWnd ))
{
WND *wndPtr = WIN_FindWndPtr( senderQ->hWnd );
DWORD extraInfo = queue->GetMessageExtraInfoVal;
queue->GetMessageExtraInfoVal = senderQ->GetMessageExtraInfoVal;
if (senderQ->flags & QUEUE_SM_WIN32)
{
WPARAM32 wParam = MAKELONG( senderQ->wParam, senderQ->wParamHigh );
TRACE(msg, "\trcm: msg is Win32\n" );
if (senderQ->flags & QUEUE_SM_UNICODE)
result = CallWindowProc32W( wndPtr->winproc,
senderQ->hWnd, senderQ->msg,
wParam, senderQ->lParam );
else
result = CallWindowProc32A( wndPtr->winproc,
senderQ->hWnd, senderQ->msg,
wParam, senderQ->lParam );
}
else /* Win16 message */
result = CallWindowProc16( (WNDPROC16)wndPtr->winproc,
senderQ->hWnd, senderQ->msg,
senderQ->wParam, senderQ->lParam );
queue->GetMessageExtraInfoVal = extraInfo; /* Restore extra info */
TRACE(msg,"\trcm: result = %08x\n", (unsigned)result );
}
else WARN(msg, "\trcm: bad hWnd\n");
/* Return the result to the sender task */
ReplyMessage16( result );
queue->InSendMessageHandle = prevSender;
queue->smResultCurrent = prevCtrlPtr;
TRACE(msg,"done!\n");
}
/***********************************************************************
* QUEUE_FlushMessage
*
* Try to reply to all pending sent messages on exit.
*/
void QUEUE_FlushMessages( HQUEUE16 hQueue )
{
MESSAGEQUEUE *queue = (MESSAGEQUEUE*)GlobalLock16( hQueue );
if( queue )
{
MESSAGEQUEUE *senderQ = (MESSAGEQUEUE*)GlobalLock16( queue->hSendingTask);
QSMCTRL* CtrlPtr = queue->smResultCurrent;
TRACE(msg,"Flushing queue %04x:\n", hQueue );
while( senderQ )
{
if( !CtrlPtr )
CtrlPtr = senderQ->smResultInit;
TRACE(msg,"\tfrom queue %04x, smResult %08x\n", queue->hSendingTask, (unsigned)CtrlPtr );
if( !(queue->hSendingTask = senderQ->hPrevSendingTask) )
queue->wakeBits &= ~QS_SENDMESSAGE;
QUEUE_SetWakeBit( senderQ, QS_SMPARAMSFREE );
queue->smResultCurrent = CtrlPtr;
while( senderQ->wakeBits & QS_SMRESULT ) OldYield();
senderQ->SendMessageReturn = 0;
senderQ->smResult = queue->smResultCurrent;
QUEUE_SetWakeBit( senderQ, QS_SMRESULT);
senderQ = (MESSAGEQUEUE*)GlobalLock16( queue->hSendingTask);
CtrlPtr = NULL;
}
queue->InSendMessageHandle = 0;
}
}
/***********************************************************************
* QUEUE_AddMsg
*
* Add a message to the queue. Return FALSE if queue is full.
*/
BOOL32 QUEUE_AddMsg( HQUEUE16 hQueue, MSG16 * msg, DWORD extraInfo )
{
int pos;
MESSAGEQUEUE *msgQueue;
SIGNAL_MaskAsyncEvents( TRUE );
if (!(msgQueue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return FALSE;
pos = msgQueue->nextFreeMessage;
/* Check if queue is full */
if ((pos == msgQueue->nextMessage) && (msgQueue->msgCount > 0))
{
SIGNAL_MaskAsyncEvents( FALSE );
WARN( msg,"Queue is full!\n" );
return FALSE;
}
/* Store message */
msgQueue->messages[pos].msg = *msg;
msgQueue->messages[pos].extraInfo = extraInfo;
if (pos < msgQueue->queueSize-1) pos++;
else pos = 0;
msgQueue->nextFreeMessage = pos;
msgQueue->msgCount++;
SIGNAL_MaskAsyncEvents( FALSE );
QUEUE_SetWakeBit( msgQueue, QS_POSTMESSAGE );
return TRUE;
}
/***********************************************************************
* QUEUE_FindMsg
*
* Find a message matching the given parameters. Return -1 if none available.
*/
int QUEUE_FindMsg( MESSAGEQUEUE * msgQueue, HWND32 hwnd, int first, int last )
{
int i, pos = msgQueue->nextMessage;
TRACE(msg,"hwnd=%04x pos=%d\n", hwnd, pos );
if (!msgQueue->msgCount) return -1;
if (!hwnd && !first && !last) return pos;
for (i = 0; i < msgQueue->msgCount; i++)
{
MSG16 * msg = &msgQueue->messages[pos].msg;
if (!hwnd || (msg->hwnd == hwnd))
{
if (!first && !last) return pos;
if ((msg->message >= first) && (msg->message <= last)) return pos;
}
if (pos < msgQueue->queueSize-1) pos++;
else pos = 0;
}
return -1;
}
/***********************************************************************
* QUEUE_RemoveMsg
*
* Remove a message from the queue (pos must be a valid position).
*/
void QUEUE_RemoveMsg( MESSAGEQUEUE * msgQueue, int pos )
{
SIGNAL_MaskAsyncEvents( TRUE );
if (pos >= msgQueue->nextMessage)
{
for ( ; pos > msgQueue->nextMessage; pos--)
msgQueue->messages[pos] = msgQueue->messages[pos-1];
msgQueue->nextMessage++;
if (msgQueue->nextMessage >= msgQueue->queueSize)
msgQueue->nextMessage = 0;
}
else
{
for ( ; pos < msgQueue->nextFreeMessage; pos++)
msgQueue->messages[pos] = msgQueue->messages[pos+1];
if (msgQueue->nextFreeMessage) msgQueue->nextFreeMessage--;
else msgQueue->nextFreeMessage = msgQueue->queueSize-1;
}
msgQueue->msgCount--;
if (!msgQueue->msgCount) msgQueue->wakeBits &= ~QS_POSTMESSAGE;
SIGNAL_MaskAsyncEvents( FALSE );
}
/***********************************************************************
* QUEUE_WakeSomeone
*
* Wake a queue upon reception of a hardware event.
*/
static void QUEUE_WakeSomeone( UINT32 message )
{
WND* wndPtr = NULL;
WORD wakeBit;
HWND32 hwnd;
MESSAGEQUEUE *queue = pCursorQueue;
if( (message >= WM_KEYFIRST) && (message <= WM_KEYLAST) )
{
wakeBit = QS_KEY;
if( pActiveQueue ) queue = pActiveQueue;
}
else
{
wakeBit = (message == WM_MOUSEMOVE) ? QS_MOUSEMOVE : QS_MOUSEBUTTON;
if( (hwnd = GetCapture32()) )
if( (wndPtr = WIN_FindWndPtr( hwnd )) )
queue = (MESSAGEQUEUE *)GlobalLock16( wndPtr->hmemTaskQ );
}
if( (hwnd = GetSysModalWindow16()) )
if( (wndPtr = WIN_FindWndPtr( hwnd )) )
queue = (MESSAGEQUEUE *)GlobalLock16( wndPtr->hmemTaskQ );
if( !queue )
{
queue = GlobalLock16( hFirstQueue );
while( queue )
{
if (queue->wakeMask & wakeBit) break;
queue = GlobalLock16( queue->next );
}
if( !queue )
{
WARN(msg, "couldn't find queue\n");
return;
}
}
QUEUE_SetWakeBit( queue, wakeBit );
}
/***********************************************************************
* hardware_event
*
* Add an event to the system message queue.
* Note: the position is relative to the desktop window.
*/
void hardware_event( WORD message, WORD wParam, LONG lParam,
int xPos, int yPos, DWORD time, DWORD extraInfo )
{
MSG16 *msg;
int pos;
if (!sysMsgQueue) return;
pos = sysMsgQueue->nextFreeMessage;
/* Merge with previous event if possible */
if ((message == WM_MOUSEMOVE) && sysMsgQueue->msgCount)
{
if (pos > 0) pos--;
else pos = sysMsgQueue->queueSize - 1;
msg = &sysMsgQueue->messages[pos].msg;
if ((msg->message == message) && (msg->wParam == wParam))
sysMsgQueue->msgCount--; /* Merge events */
else
pos = sysMsgQueue->nextFreeMessage; /* Don't merge */
}
/* Check if queue is full */
if ((pos == sysMsgQueue->nextMessage) && sysMsgQueue->msgCount)
{
/* Queue is full, beep (but not on every mouse motion...) */
if (message != WM_MOUSEMOVE) MessageBeep32(0);
return;
}
/* Store message */
msg = &sysMsgQueue->messages[pos].msg;
msg->hwnd = 0;
msg->message = message;
msg->wParam = wParam;
msg->lParam = lParam;
msg->time = time;
msg->pt.x = xPos & 0xffff;
msg->pt.y = yPos & 0xffff;
sysMsgQueue->messages[pos].extraInfo = extraInfo;
if (pos < sysMsgQueue->queueSize - 1) pos++;
else pos = 0;
sysMsgQueue->nextFreeMessage = pos;
sysMsgQueue->msgCount++;
QUEUE_WakeSomeone( message );
}
/***********************************************************************
* QUEUE_GetQueueTask
*/
HTASK16 QUEUE_GetQueueTask( HQUEUE16 hQueue )
{
MESSAGEQUEUE *queue = GlobalLock16( hQueue );
return (queue) ? queue->hTask : 0 ;
}
/***********************************************************************
* QUEUE_IncPaintCount
*/
void QUEUE_IncPaintCount( HQUEUE16 hQueue )
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
queue->wPaintCount++;
QUEUE_SetWakeBit( queue, QS_PAINT );
}
/***********************************************************************
* QUEUE_DecPaintCount
*/
void QUEUE_DecPaintCount( HQUEUE16 hQueue )
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
queue->wPaintCount--;
if (!queue->wPaintCount) queue->wakeBits &= ~QS_PAINT;
}
/***********************************************************************
* QUEUE_IncTimerCount
*/
void QUEUE_IncTimerCount( HQUEUE16 hQueue )
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
queue->wTimerCount++;
QUEUE_SetWakeBit( queue, QS_TIMER );
}
/***********************************************************************
* QUEUE_DecTimerCount
*/
void QUEUE_DecTimerCount( HQUEUE16 hQueue )
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( hQueue ))) return;
queue->wTimerCount--;
if (!queue->wTimerCount) queue->wakeBits &= ~QS_TIMER;
}
/***********************************************************************
* PostQuitMessage16 (USER.6)
*/
void WINAPI PostQuitMessage16( INT16 exitCode )
{
PostQuitMessage32( exitCode );
}
/***********************************************************************
* PostQuitMessage32 (USER32.421)
*
* PostQuitMessage() posts a message to the system requesting an
* application to terminate execution. As a result of this function,
* the WM_QUIT message is posted to the application, and
* PostQuitMessage() returns immediately. The exitCode parameter
* specifies an application-defined exit code, which appears in the
* _wParam_ parameter of the WM_QUIT message posted to the application.
*
* CONFORMANCE
*
* ECMA-234, Win32
*/
void WINAPI PostQuitMessage32( INT32 exitCode )
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return;
queue->wPostQMsg = TRUE;
queue->wExitCode = (WORD)exitCode;
}
/***********************************************************************
* GetWindowTask16 (USER.224)
*/
HTASK16 WINAPI GetWindowTask16( HWND16 hwnd )
{
WND *wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
return QUEUE_GetQueueTask( wndPtr->hmemTaskQ );
}
/***********************************************************************
* GetWindowThreadProcessId (USER32.313)
*/
DWORD WINAPI GetWindowThreadProcessId( HWND32 hwnd, LPDWORD process )
{
HTASK16 htask;
TDB *tdb;
WND *wndPtr = WIN_FindWndPtr( hwnd );
if (!wndPtr) return 0;
htask=QUEUE_GetQueueTask( wndPtr->hmemTaskQ );
tdb = (TDB*)GlobalLock16(htask);
if (!tdb || !tdb->thdb) return 0;
if (process) *process = PDB_TO_PROCESS_ID( tdb->thdb->process );
return THDB_TO_THREAD_ID( tdb->thdb );
}
/***********************************************************************
* SetMessageQueue16 (USER.266)
*/
BOOL16 WINAPI SetMessageQueue16( INT16 size )
{
return SetMessageQueue32( size );
}
/***********************************************************************
* SetMessageQueue32 (USER32.494)
*/
BOOL32 WINAPI SetMessageQueue32( INT32 size )
{
HQUEUE16 hQueue, hNewQueue;
MESSAGEQUEUE *queuePtr;
TRACE(msg,"task %04x size %i\n", GetCurrentTask(), size);
if ((size > MAX_QUEUE_SIZE) || (size <= 0)) return TRUE;
if( !(hNewQueue = QUEUE_CreateMsgQueue( size )))
{
WARN(msg, "failed!\n");
return FALSE;
}
queuePtr = (MESSAGEQUEUE *)GlobalLock16( hNewQueue );
SIGNAL_MaskAsyncEvents( TRUE );
/* Copy data and free the old message queue */
if ((hQueue = GetTaskQueue(0)) != 0)
{
MESSAGEQUEUE *oldQ = (MESSAGEQUEUE *)GlobalLock16( hQueue );
memcpy( &queuePtr->wParamHigh, &oldQ->wParamHigh,
(int)oldQ->messages - (int)(&oldQ->wParamHigh) );
HOOK_ResetQueueHooks( hNewQueue );
if( WIN_GetDesktop()->hmemTaskQ == hQueue )
WIN_GetDesktop()->hmemTaskQ = hNewQueue;
WIN_ResetQueueWindows( WIN_GetDesktop(), hQueue, hNewQueue );
CLIPBOARD_ResetLock( hQueue, hNewQueue );
QUEUE_DeleteMsgQueue( hQueue );
}
/* Link new queue into list */
queuePtr->hTask = GetCurrentTask();
queuePtr->next = hFirstQueue;
hFirstQueue = hNewQueue;
if( !queuePtr->next ) pCursorQueue = queuePtr;
SetTaskQueue( 0, hNewQueue );
SIGNAL_MaskAsyncEvents( FALSE );
return TRUE;
}
/***********************************************************************
* GetQueueStatus16 (USER.334)
*/
DWORD WINAPI GetQueueStatus16( UINT16 flags )
{
MESSAGEQUEUE *queue;
DWORD ret;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
ret = MAKELONG( queue->changeBits, queue->wakeBits );
queue->changeBits = 0;
return ret & MAKELONG( flags, flags );
}
/***********************************************************************
* GetQueueStatus32 (USER32.283)
*/
DWORD WINAPI GetQueueStatus32( UINT32 flags )
{
MESSAGEQUEUE *queue;
DWORD ret;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
ret = MAKELONG( queue->changeBits, queue->wakeBits );
queue->changeBits = 0;
return ret & MAKELONG( flags, flags );
}
/***********************************************************************
* GetInputState16 (USER.335)
*/
BOOL16 WINAPI GetInputState16(void)
{
return GetInputState32();
}
/***********************************************************************
* WaitForInputIdle (USER32.577)
*/
DWORD WINAPI WaitForInputIdle (HANDLE32 hProcess, DWORD dwTimeOut)
{
FIXME (msg, "(hProcess=%d, dwTimeOut=%ld): stub\n", hProcess, dwTimeOut);
return WAIT_TIMEOUT;
}
/***********************************************************************
* GetInputState32 (USER32.244)
*/
BOOL32 WINAPI GetInputState32(void)
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) )))
return FALSE;
return queue->wakeBits & (QS_KEY | QS_MOUSEBUTTON);
}
/***********************************************************************
* GetMessagePos (USER.119) (USER32.272)
*
* The GetMessagePos() function returns a long value representing a
* cursor position, in screen coordinates, when the last message
* retrieved by the GetMessage() function occurs. The x-coordinate is
* in the low-order word of the return value, the y-coordinate is in
* the high-order word. The application can use the MAKEPOINT()
* macro to obtain a POINT structure from the return value.
*
* For the current cursor position, use GetCursorPos().
*
* RETURNS
*
* Cursor position of last message on success, zero on failure.
*
* CONFORMANCE
*
* ECMA-234, Win32
*
*/
DWORD WINAPI GetMessagePos(void)
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
return queue->GetMessagePosVal;
}
/***********************************************************************
* GetMessageTime (USER.120) (USER32.273)
*
* GetMessageTime() returns the message time for the last message
* retrieved by the function. The time is measured in milliseconds with
* the same offset as GetTickCount().
*
* Since the tick count wraps, this is only useful for moderately short
* relative time comparisons.
*
* RETURNS
*
* Time of last message on success, zero on failure.
*
* CONFORMANCE
*
* ECMA-234, Win32
*
*/
LONG WINAPI GetMessageTime(void)
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
return queue->GetMessageTimeVal;
}
/***********************************************************************
* GetMessageExtraInfo (USER.288) (USER32.271)
*/
LONG WINAPI GetMessageExtraInfo(void)
{
MESSAGEQUEUE *queue;
if (!(queue = (MESSAGEQUEUE *)GlobalLock16( GetTaskQueue(0) ))) return 0;
return queue->GetMessageExtraInfoVal;
}
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