/***********************************************************************************************************                                                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