GetGUIThreadInfo()

Hello,

In my application I am making a call to GetGUIThreadInfo() but it returns 0. After making a call to GetLastError() I see that it's returning 87; which hints to the fact that I am passing an incorrect parameter. Here is how I invoke it:

Code:

    GUITHREADINFO info;
    char buff[256];
    info.cbSize = sizeof(GUITHREADINFO);

    GetGUIThreadInfo(GetCurrentThreadId(), &info);
    GetWindowText(info.hwndActive, buff, 256);
    printf("Current Window: %s\n", buff);

The MSDN documentation indicates that the only thing required in order to let a call to GetGUIThreadInfo() function properly is setting the GUITHREADINFO's cbSize member to sizeof(GUITHREADINFO), which I am doing.

What can be wrong?

>> What can be wrong?

It worked fine on my system.

On mine it doesn't

I am running Windows XP

>>On mine it doesn't

Well, MSDN does say to use GetWindowThreadProcessId or NULL (to get the current process info), although I can't imagine why GetCurrentThreadId wouldn't work.