How to read output from cmd.exe using CreateProcess() and CreatePipe()

Question

How to read output from cmd.exe using CreateProcess() and CreatePipe()

I have been trying to create a child process executing c

Answer 1

I think you did everything right. But cmd.exe prints nothing or very little amount of data after start and your ReadFile blocks. If you move your cycle

while (true) {
    bStatus = ReadFile(g_hChildStd_OUT_Rd, aBuf, sizeof(aBuf), &dwRead, NULL);
    if (!bStatus || dwRead == 0) {
        break;
    }
    aBuf[dwRead] = '\0';
    printf("%s\n", aBuf);
}

into background thread and run other cycle which will read your input and send it to cmd.exe, I think you can see any effect. Either you can make read buffer smaller (16 bytes e.g.).