www.pudn.com > WDM_CharSample.rar > Test_CharSample.cpp

// Test_CharSample.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 "..\CharSampleDeviceinterface.h" 
 
#include  
#include  
#include  
 
#include "..\CharSampleioctl.h" 
 
#include "..\CharSampleDeviceinterface.h"	// Has class GUID definition 
 
// This function is found in module OpenByIntf.cpp 
HANDLE OpenByInterface(GUID* pClassGuid, DWORD instance, PDWORD pError); 
 
// Handle to device opened in driver. 
// 
HANDLE	hDevice = INVALID_HANDLE_VALUE; 
 
// Class GUID used to open device 
// 
GUID ClassGuid = CharSampleDevice_CLASS_GUID; 
 
int __cdecl main(int argc, char *argv[]) 
{ 
	DWORD	Error; 
 
	printf("Test application Test_CharSample starting...\n"); 
 
	hDevice = OpenByInterface( &ClassGuid, 0, &Error); 
	if (hDevice == INVALID_HANDLE_VALUE) 
	{ 
		printf("ERROR opening device: (%0x) returned from CreateFile\n", GetLastError()); 
		exit(1); 
	} 
	else 
	{ 
		printf("Device found, handle open.\n"); 
	} 
 
	CHAR	bufInput[1];		// Input to device 
	CHAR	bufOutput[2];	// Output from device 
	ULONG	nOutput;						// Count written to bufOutput 
 
	printf("ÇëÊäÈëÊý×Ö(0-9)\n");  
l0:	bufInput[0]=_getch(); 
	if ((bufInput[0]<'0') || (bufInput[0]>'9')) goto l0; 
	_putch(bufInput[0]); 
    
	// Call device IO Control interface (CHARSAMPLE_IOCTL_800) in driver 
	if (!DeviceIoControl(hDevice, 
						 CHARSAMPLE_IOCTL_800, 
						 bufInput, 
						 1, 
						 bufOutput, 
						 2, 
						 &nOutput, 
						 NULL) 
	   ) 
	{ 
		printf("ERROR: DeviceIoControl returns %0x.", GetLastError()); 
		exit(1); 
	} 
	printf(":");  
	_putch(bufOutput[0]);  
	_putch(bufOutput[1]);  
	printf("\n");  
 
	return 0; 
}