管道的创建
在父进程中创建管道
HANDLE hRead=0;
HANDLE hWrite = 0;
SECURITY_ATTRIBUTES sa;
sa.bInheritHandle = true;
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = 0;
if (!CreatePipe(&hRead, &hWrite, &sa, 0))
{
printf("创建管道失败");
}
STARTUPINFO si = {sizeof(si)};
PROCESS_INFORMATION pi;
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = hRead;
si.hStdOutput = hWrite;
si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
if (!CreateProcess(TEXT("d:/test.exe"),0 , 0, 0, TRUE, 0, 0, 0, &si, &pi))
{
printf("创建子进程失败");
return false;
}
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
子进程得到管道的句柄
HANDLE hRead = GetStdHandle(STD_INPUT_HANDLE);
HANDLE hWrite = GetStdHandle(STD_OUTPUT_HANDLE);
然后就可以用WriteFile 和ReadFile 进程通信