test.cpp

来自「灰狐驱动学习笔记系列 参考 windows驱动开发详解和 楚狂人windows驱」· C++ 代码 · 共 39 行

#include "windows.h"
#include "stdio.h"

int main()
{
	char	szInBuffer[20] = {0};
	DWORD	nLen = 0;

	// 打开设备句柄
	HANDLE hDevice = ::CreateFile("\\\\.\\Test",					// 符号链接
								  GENERIC_READ | GENERIC_WRITE,
								  0,
								  NULL,
								  OPEN_EXISTING,
								  FILE_ATTRIBUTE_NORMAL,
								  NULL);

	if (hDevice == INVALID_HANDLE_VALUE)
	{
		printf("Try to Open Device %s Error : %d!\n", "\\\\.\\Test", ::GetLastError());

		return -1;
	}

	memset(szInBuffer, 'A', 10);
	BOOL ret = WriteFile(hDevice,
						 szInBuffer,
						 10,
						 &nLen,
						 NULL);

	printf("ret: %d Len: %d\n", ret, nLen);

	// 关闭设备句柄
	CloseHandle(hDevice);

	return 0;
}