Sweden-Number/windows/focus.c

200 lines
5.3 KiB
C

/*
* Focus functions
*
* Copyright 1993 David Metcalfe
* 1994 Alexandre Julliard
* 1995 Alex Korobka
*
*/
#include "win.h"
#include "winpos.h"
#include "hook.h"
#include "message.h"
#include "task.h"
#include "debug.h"
DEFAULT_DEBUG_CHANNEL(win)
/*****************************************************************
* FOCUS_SwitchFocus
* pMsgQ is the queue whose perQData focus is to be modified
*/
void FOCUS_SwitchFocus( MESSAGEQUEUE *pMsgQ, HWND hFocusFrom, HWND hFocusTo )
{
WND *pFocusTo = WIN_FindWndPtr( hFocusTo );
PERQDATA_SetFocusWnd( pMsgQ->pQData, hFocusTo );
#if 0
if (hFocusFrom) SendMessageA( hFocusFrom, WM_KILLFOCUS, hFocusTo, 0 );
#else
/* FIXME: must be SendMessage16() because 32A doesn't do
* intertask at this time */
if (hFocusFrom) SendMessage16( hFocusFrom, WM_KILLFOCUS, hFocusTo, 0 );
#endif
if( !pFocusTo || hFocusTo != PERQDATA_GetFocusWnd( pMsgQ->pQData ) )
{
WIN_ReleaseWndPtr(pFocusTo);
return;
}
/* According to API docs, the WM_SETFOCUS message is sent AFTER the window
has received the keyboard focus. */
pFocusTo->pDriver->pSetFocus(pFocusTo);
WIN_ReleaseWndPtr(pFocusTo);
#if 0
SendMessageA( hFocusTo, WM_SETFOCUS, hFocusFrom, 0 );
#else
SendMessage16( hFocusTo, WM_SETFOCUS, hFocusFrom, 0 );
#endif
}
/*****************************************************************
* SetFocus16 (USER.22)
*/
HWND16 WINAPI SetFocus16( HWND16 hwnd )
{
return (HWND16)SetFocus( hwnd );
}
/*****************************************************************
* SetFocus32 (USER32.481)
*/
HWND WINAPI SetFocus( HWND hwnd )
{
HWND hWndFocus = 0, hwndTop = hwnd;
WND *wndPtr = WIN_FindWndPtr( hwnd );
MESSAGEQUEUE *pMsgQ = 0, *pCurMsgQ = 0;
BOOL16 bRet = 0;
/* Get the messageQ for the current thread */
if (!(pCurMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() )))
{
WARN( win, "\tCurrent message queue not found. Exiting!\n" );
goto CLEANUP;
}
if (wndPtr)
{
/* Check if we can set the focus to this window */
while ( (wndPtr->dwStyle & (WS_CHILD | WS_POPUP)) == WS_CHILD )
{
if ( wndPtr->dwStyle & ( WS_MINIMIZE | WS_DISABLED) )
goto CLEANUP;
WIN_UpdateWndPtr(&wndPtr,wndPtr->parent);
if (!wndPtr) goto CLEANUP;
hwndTop = wndPtr->hwndSelf;
}
/* Retrieve the message queue associated with this window */
pMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( wndPtr->hmemTaskQ );
if ( !pMsgQ )
{
WARN( win, "\tMessage queue not found. Exiting!\n" );
goto CLEANUP;
}
/* Make sure that message queue for the window we are setting focus to
* shares the same perQ data as the current threads message queue.
* In other words you can't set focus to a window owned by a different
* thread unless AttachThreadInput has been called previously.
* (see AttachThreadInput and SetFocus docs)
*/
if ( pCurMsgQ->pQData != pMsgQ->pQData )
goto CLEANUP;
/* Get the current focus window from the perQ data */
hWndFocus = PERQDATA_GetFocusWnd( pMsgQ->pQData );
if( hwnd == hWndFocus )
{
bRet = 1; /* Success */
goto CLEANUP; /* Nothing to do */
}
/* call hooks */
if( HOOK_CallHooks16( WH_CBT, HCBT_SETFOCUS, (WPARAM16)hwnd,
(LPARAM)hWndFocus) )
goto CLEANUP;
/* activate hwndTop if needed. */
if (hwndTop != GetActiveWindow())
{
if (!WINPOS_SetActiveWindow(hwndTop, 0, 0)) goto CLEANUP;
if (!IsWindow( hwnd )) goto CLEANUP; /* Abort if window destroyed */
}
/* Get the current focus window from the perQ data */
hWndFocus = PERQDATA_GetFocusWnd( pMsgQ->pQData );
/* Change focus and send messages */
FOCUS_SwitchFocus( pMsgQ, hWndFocus, hwnd );
}
else /* NULL hwnd passed in */
{
if( HOOK_CallHooks16( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)hWndFocus ) )
goto CLEANUP;
/* Get the current focus from the perQ data of the current message Q */
hWndFocus = PERQDATA_GetFocusWnd( pCurMsgQ->pQData );
/* Change focus and send messages */
FOCUS_SwitchFocus( pCurMsgQ, hWndFocus, hwnd );
}
bRet = 1; /* Success */
CLEANUP:
/* Unlock the queues before returning */
if ( pMsgQ )
QUEUE_Unlock( pMsgQ );
if ( pCurMsgQ )
QUEUE_Unlock( pCurMsgQ );
WIN_ReleaseWndPtr(wndPtr);
return bRet ? hWndFocus : 0;
}
/*****************************************************************
* GetFocus16 (USER.23)
*/
HWND16 WINAPI GetFocus16(void)
{
return (HWND16)GetFocus();
}
/*****************************************************************
* GetFocus32 (USER32.240)
*/
HWND WINAPI GetFocus(void)
{
MESSAGEQUEUE *pCurMsgQ = 0;
HWND hwndFocus = 0;
/* Get the messageQ for the current thread */
if (!(pCurMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetFastQueue16() )))
{
WARN( win, "\tCurrent message queue not found. Exiting!\n" );
return 0;
}
/* Get the current focus from the perQ data of the current message Q */
hwndFocus = PERQDATA_GetFocusWnd( pCurMsgQ->pQData );
QUEUE_Unlock( pCurMsgQ );
return hwndFocus;
}