keybuf.c

来自「游戏对外设硬件的控制 鼠标 键盘 和手柄」· C语言 代码 · 共 46 行

#include<stdio.h>
#include<stdlib.h>
#include<alloc.h>
#include<dos.h>

void Clear_Key_Buffer(void)
{
int offset;
offset=peek(0x40,0x1a);
pokeb(0x40,0x1c,offset);
}

unsigned char Get_Ascii_Key(void)
{
if(bioskey(1))
return(bioskey(0));
else return(0);
}

void main(void)
{
	char key;
	unsigned long i=0;
	printf("\nNot clear key buffer,press any keys you like\n");
	while(i!=50000)
	{
		if(key=Get_Ascii_Key())
		{
			printf("%c",key);
		}
		i++;
	}
	i=0;
	printf("\nNow clear key buffer,press any keys you like");
	while(i!=50000)
	{
		Clear_Key_Buffer();
		if(key=Get_Ascii_Key())
		{
			printf("%c",key);
		}
		i++;
	}
}