addxy.cpp

武安河书第一版（vxd）Windows 驱动例子

#include <stdio.h>
#include <windows.h>
#include <winioctl.h>
#include "addxy.h"

void main()
{
	HANDLE hDevice;
	int z;
	xy *pxy;

	hDevice=CreateFile("\\\\.\\APPTOVXD.VXD",0,0,0,CREATE_NEW,FILE_FLAG_DELETE_ON_CLOSE,0);
	if (hDevice == INVALID_HANDLE_VALUE)
	{
        fprintf(stderr,"Cannot load VxD,error=%08ld\n",GetLastError());
	 	exit(1);
	}

	pxy=new xy[1];
	pxy[1].x=40;
	pxy[1].y=80;

	if (!DeviceIoControl(hDevice,ADDXY,&pxy[1],0,&z,0,0,NULL))
	{
    	fprintf(stderr, "Failed to ADD\n");
		exit(1);
	}

	printf("%d+%d=%d\n",pxy[1].x,pxy[1].y,z);
	CloseHandle(hDevice);
}