Sweden-Number/windows/focus.c

120 lines
2.8 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"
static HWND32 hwndFocus = 0;
/*****************************************************************
* FOCUS_SwitchFocus
*/
void FOCUS_SwitchFocus( HWND32 hFocusFrom, HWND32 hFocusTo )
{
WND *pFocusTo = WIN_FindWndPtr( hFocusTo );
hwndFocus = hFocusTo;
#if 0
if (hFocusFrom) SendMessage32A( 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 != hwndFocus )
return;
/* According to API docs, the WM_SETFOCUS message is sent AFTER the window
has received the keyboard focus. */
pFocusTo->pDriver->pSetFocus(pFocusTo);
#if 0
SendMessage32A( hFocusTo, WM_SETFOCUS, hFocusFrom, 0 );
#else
SendMessage16( hFocusTo, WM_SETFOCUS, hFocusFrom, 0 );
#endif
}
/*****************************************************************
* SetFocus16 (USER.22)
*/
HWND16 WINAPI SetFocus16( HWND16 hwnd )
{
return (HWND16)SetFocus32( hwnd );
}
/*****************************************************************
* SetFocus32 (USER32.481)
*/
HWND32 WINAPI SetFocus32( HWND32 hwnd )
{
HWND32 hWndPrevFocus, hwndTop = hwnd;
WND *wndPtr = WIN_FindWndPtr( hwnd );
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) )
return 0;
if (!(wndPtr = wndPtr->parent)) return 0;
hwndTop = wndPtr->hwndSelf;
}
if( hwnd == hwndFocus ) return hwnd;
/* call hooks */
if( HOOK_CallHooks16( WH_CBT, HCBT_SETFOCUS, (WPARAM16)hwnd,
(LPARAM)hwndFocus) )
return 0;
/* activate hwndTop if needed. */
if (hwndTop != GetActiveWindow32())
{
if (!WINPOS_SetActiveWindow(hwndTop, 0, 0)) return 0;
if (!IsWindow32( hwnd )) return 0; /* Abort if window destroyed */
}
}
else if( HOOK_CallHooks16( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)hwndFocus ) )
return 0;
/* Change focus and send messages */
hWndPrevFocus = hwndFocus;
FOCUS_SwitchFocus( hwndFocus , hwnd );
return hWndPrevFocus;
}
/*****************************************************************
* GetFocus16 (USER.23)
*/
HWND16 WINAPI GetFocus16(void)
{
return (HWND16)hwndFocus;
}
/*****************************************************************
* GetFocus32 (USER32.240)
*/
HWND32 WINAPI GetFocus32(void)
{
return hwndFocus;
}