test_powersleep.cpp

来自「WindowsXP WDM驱动程序开发实例」· C++ 代码 · 共 60 行

// Test_PowerSleep.cpp
//
// Generated by DriverWizard version DriverStudio 2.6.0 (Build 336)
//
// This console application demonstrates how to open a handle
// to a device in your driver, and communicate with the driver
// using Read, Write, and DeviceIoControl calls, as appropriate.
//
// This test program attempts to open the device using the
// GUID defined in "..\PowerSleepDeviceinterface.h"
#include <iostream.h>
#include <windows.h>

#include <winioctl.h>
#include "..\PowerSleepioctl.h"

#include "..\PowerSleepDeviceinterface.h"	// Has class GUID definition

GUID ClassGuid = PowerSleepDevice_CLASS_GUID;
// This function is found in module OpenByIntf.cpp

HANDLE OpenByInterface(
		GUID* pClassGuid, 
		DWORD instance, 
		PDWORD pError
		);

void __cdecl main(int ac, char* av[])
{
	DWORD Error;
	HANDLE hDevice;

	hDevice = OpenByInterface( &ClassGuid, 0, &Error);

	if (hDevice == INVALID_HANDLE_VALUE)
	{
		cout << "Failed to open device, code = " << Error << endl;
		exit(1);
	}
	else
		cout << "Device opened ok\n";

	DWORD nRet;
	BOOL status = 
		DeviceIoControl(hDevice, POWERSLEEP_IOCTL_800, NULL, 0, NULL, 0, &nRet, NULL);

	if ( ! status )
	{
		cout << "DeviceIoControl call failed, code=" << GetLastError() << endl;
		exit(1);
	}
	else
		cout << "DeviceIoControl ok\n";

	CloseHandle(hDevice);		

	exit(0);
}