/***********************************************************************************************************                                                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        : GUIDev.CPurpose     : Implementation of memory devices---------------------------END-OF-HEADER------------------------------*/#include <string.h>#include "GUI_Protected.h"#include "GUIDebug.h"/* Memory device capabilities are compiled only if support for them is enabled.*/ #if GUI_SUPPORT_MEMDEV/*  *****************************************************************  *  *              GUI_USAGE_Select  *  *****************************************************************Purpose:  Selects a usage object into the active memory device.*/void GUI_USAGE_Select(GUI_USAGE_Handle hUsage) {  GUI_MEMDEV * pDev;  GUI_LOCK();  pDev = GUI_MEMDEV_h2p(GUI_Context.hDevData);  pDev->hUsage = hUsage;  GUI_UNLOCK();}/**************************************************             DecUseCnt**************************************************Purpose: Decrements the usage count and deletes the usage object if         the counter reaches 0.*/void GUI_USAGE_DecUseCnt(GUI_USAGE_Handle  hUsage) {  GUI_USAGE* pThis;  GUI_LOCK();  pThis = GUI_USAGE_h2p(hUsage);  if (--pThis->UseCnt == 0) {    GUI_ALLOC_FREE(hUsage);  }  GUI_UNLOCK();}#elsevoid GUIDEV_Usage(void) {} /* avoid empty object files */#endif /* GUI_SUPPORT_MEMDEV */