?? wm_setfocus.c
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/*********************************************************************************************************** uC/GUI* Universal graphic software for embedded applications** (c) Copyright 2002, Micrium Inc., Weston, FL* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH** 礐/GUI is protected by international copyright laws. Knowledge of the* source code may not be used to write a similar product. This file may* only be used in accordance with a license and should not be redistributed* in any way. We appreciate your understanding and fairness.*----------------------------------------------------------------------File : WM_SetFocus.cPurpose : Implementation of WM_SetFocus----------------------------------------------------------------------*/#include "WM_Intern.H"#if GUI_WINSUPPORT /* If 0, WM will not generate any code *//*********************************************************************** Public code************************************************************************//*********************************************************************** WM__SetFocus Sets the focus to the specified child. It sends 2 messages: WM_SET_FOCUS(1) to window to receive focus WM_SET_FOCUS(0) to window to lose focus Return value: 0 on success (Focus could be set) !=0 on failure (Windows could not take the focus)*/int WM_SetFocus(WM_HWIN hWin) { int r; WM_MESSAGE Msg; WM_LOCK(); if ((hWin) && (hWin != WM__hWinFocus)) { Msg.MsgId = WM_SET_FOCUS; /* Send a "no more foucs" message to window losing focus */ Msg.Data.v = 0; WM_SendMessage(WM__hWinFocus, &Msg); /* Send "You have the focus now" message to the window */ Msg.Data.v = 1; WM_SendMessage(WM__hWinFocus = hWin, &Msg); r = Msg.Data.v; } else { r = 1; } WM_UNLOCK(); return r;}#else void WM_SetFocus_C(void) {} /* avoid empty object files */#endif
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