lcd_setapi.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 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		: LCD_SetAPI.C
Purpose 	: Implementation of said function
---------------------------END-OF-HEADER------------------------------
*/

#include <stddef.h> 		  /* needed for definition of NULL */
#include "GUI_Private.h"
#include "GUIDebug.h"
#include "LCD_Private.h"	  /* Required for configuration, APIList */

#if GUI_SUPPORT_DEVICES

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	LCD_SetAPI
*
* Purpose:
*   Sets the API table for a layer.
*   Some high level software (such as the VNC server, but maybe also the mouse "Cursor" module)
*   may need to override these pointers in order to link itself into the chain
*   of drawing routines.
*/
const tLCDDEV_APIList * LCD_SetAPI(const tLCDDEV_APIList *pAPI, int Index)
{
	const tLCDDEV_APIList* pOldAPI;
	pOldAPI = LCD_aAPI[Index];
	/* Also aplly changes to current context if LCD of this layer is selected */
	if ((GUI_Context.SelLayer == Index) && (GUI_Context.hDevData == 0))
	{
		GUI_Context.pDeviceAPI = pAPI;
	}
	LCD_aAPI[Index] = pAPI;
	return pOldAPI;
}

#else

void LCD_SetAPI_C(void);
void LCD_SetAPI_C(void)
{
}

#endif

/*************************** End of file ****************************/