listbox_setautoscroll.c

来自「MCB2300_ucgui_LCD320240.rar LPC2368的u」· C语言 代码 · 共 95 行

/*
*********************************************************************************************************
*   											 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		: LISTBOX_SetAutoScroll.c
Purpose 	: Implementation of LISTBOX_SetAutoScroll
---------------------------END-OF-HEADER------------------------------
*/

#include <stdlib.h>
#include <string.h>
#include "GUI_ARRAY.h"
#include "LISTBOX_Private.h"
#include "SCROLLBAR.h"
#include "GUIDebug.h"
#include "GUI_Protected.h"
#include "WM_Intern.h"

#if GUI_WINSUPPORT

/*********************************************************************
*
*   	Exported routines:  Various methods
*
**********************************************************************
*/
/*********************************************************************
*
*   	LISTBOX_SetAutoScrollH
*/
void LISTBOX_SetAutoScrollH(LISTBOX_Handle hObj, int State)
{
	if (hObj)
	{
		LISTBOX_Obj* pObj;
		char Flags;
		WM_LOCK();
		pObj = LISTBOX_H2P(hObj);
		Flags = pObj->Flags & (~LISTBOX_SF_AUTOSCROLLBAR_H);
		if (State)
		{
			Flags |= LISTBOX_SF_AUTOSCROLLBAR_H;
		}
		if (pObj->Flags != Flags)
		{
			pObj->Flags = Flags;
			LISTBOX_UpdateScrollers(hObj);
		}
		WM_UNLOCK();
	}
}

/*********************************************************************
*
*   	LISTBOX_SetAutoScrollV
*/
void LISTBOX_SetAutoScrollV(LISTBOX_Handle hObj, int State)
{
	if (hObj)
	{
		LISTBOX_Obj* pObj;
		char Flags;
		WM_LOCK();
		pObj = LISTBOX_H2P(hObj);
		Flags = pObj->Flags & (~LISTBOX_SF_AUTOSCROLLBAR_V);
		if (State)
		{
			Flags |= LISTBOX_SF_AUTOSCROLLBAR_V;
		}
		if (pObj->Flags != Flags)
		{
			pObj->Flags = Flags;
			LISTBOX_UpdateScrollers(hObj);
		}
		WM_UNLOCK();
	}
}


#else   						 /* Avoid problems with empty object modules */
void LISTBOX_SetAutoScroll_C(void)
{
}
#endif