| /* |
| * Focus functions |
| * |
| * Copyright 1993 David Metcalfe |
| * 1994 Alexandre Julliard |
| * 1995 Alex Korobka |
| * |
| */ |
| |
| #include "windef.h" |
| #include "wingdi.h" |
| #include "wine/winuser16.h" |
| #include "win.h" |
| #include "winpos.h" |
| #include "hook.h" |
| #include "message.h" |
| #include "queue.h" |
| #include "user.h" |
| #include "debugtools.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 ) |
| { |
| PERQDATA_SetFocusWnd( pMsgQ->pQData, hFocusTo ); |
| |
| if (hFocusFrom) SendMessageA( hFocusFrom, WM_KILLFOCUS, (WPARAM)hFocusTo, 0 ); |
| |
| if( !hFocusTo || hFocusTo != PERQDATA_GetFocusWnd( pMsgQ->pQData ) ) |
| { |
| return; |
| } |
| |
| /* According to API docs, the WM_SETFOCUS message is sent AFTER the window |
| has received the keyboard focus. */ |
| if (USER_Driver.pSetFocus) USER_Driver.pSetFocus(hFocusTo); |
| |
| SendMessageA( hFocusTo, WM_SETFOCUS, (WPARAM)hFocusFrom, 0 ); |
| } |
| |
| |
| /***************************************************************** |
| * SetFocus (USER32.@) |
| */ |
| HWND WINAPI SetFocus( HWND hwnd ) |
| { |
| HWND hWndFocus = 0, hwndTop = hwnd; |
| MESSAGEQUEUE *pMsgQ = 0, *pCurMsgQ = 0; |
| BOOL bRet = 0; |
| |
| /* Get the messageQ for the current thread */ |
| if (!(pCurMsgQ = QUEUE_Current())) |
| { |
| WARN("\tCurrent message queue not found. Exiting!\n" ); |
| return 0; |
| } |
| |
| if (hwnd) |
| { |
| /* Check if we can set the focus to this window */ |
| WND *wndPtr; |
| |
| hwnd = WIN_GetFullHandle( hwnd ); |
| for (;;) |
| { |
| HWND parent; |
| LONG style = GetWindowLongW( hwndTop, GWL_STYLE ); |
| if (style & (WS_MINIMIZE | WS_DISABLED)) return 0; |
| parent = GetAncestor( hwndTop, GA_PARENT ); |
| if (!parent || parent == GetDesktopWindow()) break; |
| hwndTop = parent; |
| } |
| |
| if (!(wndPtr = WIN_FindWndPtr( hwndTop ))) return 0; |
| |
| /* Retrieve the message queue associated with this window */ |
| pMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( wndPtr->hmemTaskQ ); |
| WIN_ReleaseWndPtr( wndPtr ); |
| if ( !pMsgQ ) |
| { |
| WARN("\tMessage queue not found. Exiting!\n" ); |
| return 0; |
| } |
| |
| /* 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_CallHooksA( WH_CBT, HCBT_SETFOCUS, (WPARAM)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_CallHooksA( WH_CBT, HCBT_SETFOCUS, 0, (LPARAM)hWndFocus ) ) |
| return 0; |
| |
| /* 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 ); |
| |
| return bRet ? hWndFocus : 0; |
| } |
| |
| |
| /***************************************************************** |
| * GetFocus (USER32.@) |
| */ |
| HWND WINAPI GetFocus(void) |
| { |
| MESSAGEQUEUE *pCurMsgQ = 0; |
| |
| /* Get the messageQ for the current thread */ |
| if (!(pCurMsgQ = QUEUE_Current())) |
| { |
| WARN("\tCurrent message queue not found. Exiting!\n" ); |
| return 0; |
| } |
| |
| /* Get the current focus from the perQ data of the current message Q */ |
| return PERQDATA_GetFocusWnd( pCurMsgQ->pQData ); |
| } |