www.pudn.com > dos_gui.zip > YYXMSG.CPP, change:1994-03-29,size:1105b

// 1993 (c) ALL RIGHTS RESERVED 
// AUTHOR  BY XuYongYong 
 
/* 	yyxmsg.cpp 
*/ 
#include "yyxmsg.h" 
#include "yyxmain.h" 
 
MSGQueue::MSGQueue() 
{ 
	this->Reset(); 
} 
 
void MSGQueue::SendMessage (long int ID,long int Action,void *fptr) 
{   asm cli; 
	msg_array[first].ID =ID; 
	msg_array[first].Action =Action; 
	msg_array[first].fptr =fptr; 
 
    oldfirst =first; 
	first -=1; 
	if ( first <0 )  first=MAXMSGNUM; 
	if ( last==first ) { 
//		puts("\007\007\007MSGQueue Overflow"); 
//		exit (100); 
		error("\007\007\007MSGQueue Overflow"); 
	} 
	asm sti; 
} 
 
BOOL MSGQueue::GetMessage (MSG& message) 
{ 
	if ( first ==last ) return FALSE; 
	message=msg_array[last]; 
	last -=1; 
	if ( last <0)  last =MAXMSGNUM; 
	return TRUE; 
} 
 
BOOL MSGQueue::PeekMessage (MSG& message) 
{ 
	if ( first ==last ) return FALSE; 
	message=msg_array[last]; 
	return TRUE; 
} 
 
BOOL MSGQueue::QueueFull () 
{ register int i; 
	i = last - first; 
	if ( i<0 ) i +=MAXMSGNUM; 
	if ( i >= MSGFULLNUM ) return TRUE; 
	return FALSE; 
} 
 
void MSGQueue::Reset () 
{ 
	first=last; 
} 
 
MSGQueue::~MSGQueue() 
{ 
}