apptovxd.cpp

来自「武安河书第一版（vxd）Windows 驱动例子」· C++ 代码 · 共 29 行

// APPTOVXD.cpp - main module for VxD APPTOVXD

#define DEVICE_MAIN
#include "apptovxd.h"
Declare_Virtual_Device(APPTOVXD)
#undef DEVICE_MAIN

DWORD ApptovxdDevice::OnW32DeviceIoControl(PIOCTLPARAMS pDIOCParams)
{	xy *pxy;

	switch (pDIOCParams->dioc_IOCtlCode)
	{


	case DIOC_OPEN:
	case DIOC_CLOSEHANDLE:
		return DEVIOCTL_NOERROR;

	case ADDXY:
			pxy=(xy*)pDIOCParams->dioc_InBuf;
			*(int *)pDIOCParams->dioc_OutBuf=pxy->x+pxy->y;
		return 0;
	default:

		return -1;
	}
}