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