/***********************************************************************************************************                                                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_Screen2hWin.cPurpose     : Windows manager, add. module----------------------------------------------------------------------*/#include "WM_Intern.H"#if GUI_WINSUPPORT    /* If 0, WM will not generate any code *//*********************************************************************         Static code**********************************************************************/static int _CheckHit(WM_Obj * pWin, int x, int y) {  if (   (pWin->Status & WM_SF_ISVIS)      && (x >= pWin->Rect.x0)      && (x <= pWin->Rect.x1)      && (y >= pWin->Rect.y0)      && (y <= pWin->Rect.y1))  {    return 1;  }  return 0;}/*********************************************************************         _Screen2hWin  This routine is recursive.  It checks if the given coordinates are in the window or a decendant.  Returns:  0:   If coordinates are neither in the given window nor a decendent  !=0  Handle of the topmost visible decendent in which the given       coordinate falls.*/static WM_HWIN _Screen2hWin(WM_HWIN hWin, int x, int y) {  WM_Obj* pWin = WM_HANDLE2PTR(hWin);  WM_HWIN hChild, hHit;  /* First check if the  coordinates are in the given window. If not, return 0 */  if (_CheckHit(pWin, x, y) == 0) {    return 0;  }  /* If the coordinates are in a child, search deeper ... */  for (hChild = pWin->hFirstChild; hChild; ) {    WM_Obj* pChild = WM_HANDLE2PTR(hChild);    if ((hHit = _Screen2hWin(hChild, x, y)) != 0) {      hWin = hHit;        /* Found a window */    }    hChild = pChild->hNext;  }  return hWin;            /* No Child affected ... The parent is the right one */}/*********************************************************************         Public code**********************************************************************/WM_HWIN WM_Screen2hWin(int x, int y) {  WM_HWIN r;  WM_LOCK();  r = _Screen2hWin(WM__FirstWin, x, y);  WM_UNLOCK();  return r;}#else                                       /* Avoid empty object files */  void WM_Screen2Win(void) {}#endif /* WM_MAX_WINDOW */