www.pudn.com > emGUI.rar > event.c

/* 
 *  Event Handler for emGUI 
 * 
 * 
 *  COPYRIGHT (c) 2001 - 2010. 
 *  emTech System Corporation. 
 * 
 *  The license and distribution terms for this file may be 
 *  found in found in the file LICENSE. 
 */ 
 
/*	Huangf emcore@263.net 
 */ 
#include "emGUI.h" 
 
#include  
 
static unsigned32 _previousbutton; 
 
void EventInitialize() 
{ 
} 
 
void SysHandleEvent() 
{ 
	while(1){ 
		if (SysGetEvent(50)){ 
			SysSendAppMessage(); 
		} 
	} 
} 
 
void AppHandleEvent(Application *app) 
{ 
	int 		x, y, button; 
	Window    	*wnd; 
	 
	int			type; 
	unsigned16	msg; 
	unsigned16  nParam; 
	unsigned32	lParam; 
	RECT		rect; 
		 
	type 	= app->msgBuf[0]; 
	switch(type){ 
		case EVS_MOUSE: 
			x 		= app->msgBuf[1]; 
			y 		= app->msgBuf[2]; 
			button 	= app->msgBuf[3]; 
			wnd  	= FindWindow( 
				app, 
				x, 
				y 
			); 
 
			if (wnd == NULL){ 
				/*  cannot find window */ 
				return; 
			} 
			 
			if ((button & BUTTON_LEFT) == (_previousbutton & BUTTON_LEFT)){ 
				msg = MOUSEMOVE; 
			} 
			else{ 
				if (_previousbutton & BUTTON_LEFT){ 
					msg = LBUTTONUP; 
				} 
				else{ 
					msg = LBUTTONDOWN; 
				} 
			} 
			_previousbutton = button; 
 
			nParam			= button;	/*  current button status */ 
			lParam			= (x << 16) | (y & 0x0000FFFF); 
			 
			break; 
			 
		case EVS_SYSTEM: 
			wnd 			= (WndID)app->msgBuf[1]; 
			msg				= (app->msgBuf[2] >> 16); 
			nParam			= (app->msgBuf[2] & 0x0000FFFF); 
			lParam			= (app->msgBuf[3]); 
			 
			if (wnd == NULL){ 
				/*  Application message */ 
				if (app->appProc){ 
					app->appProc( 
						app, 
						msg, 
						nParam, 
						lParam 
					); 
				} 
				return; 
			} 
 
			switch(msg){ 
				case WM_PAINT: 
					wnd->paint_count--; 
					if (wnd->paint_count){ 
						return; 
					} 
					 
					rect.left 	= wnd->invalid_l; 
					rect.top  	= wnd->invalid_t; 
					rect.right 	= wnd->invalid_r; 
					rect.bottom = wnd->invalid_b; 
					wnd->invalid_l = 0; 
					wnd->invalid_t = 0; 
					wnd->invalid_r = 0; 
					wnd->invalid_b = 0; 
					nParam = 0; 
					lParam = (unsigned32)▭ 
					break; 
			} 
			 
		default: 
			return; 
		/*  add other event here*/ 
	} 
	 
	wnd->wndProc( 
		wnd,			/*  wndID */ 
		msg,			/*  message */ 
		nParam,			/*  parameter 1 */ 
		lParam			/*  parameter 2 */ 
	); 
}