SetForegroundWindow only working while visual studio is open

Question

I\'m trying to set with c# a process window to the foreground / focus (from an application that has no focus in that moment when doing it), therefore I\'m using the user32.d

Answer 1

I had an issue with sending the Alt-key as it forced the window menu to open when I selected enter (instead of the OK button which is what I wanted).

This worked for me:

public static void ActivateWindow(IntPtr mainWindowHandle)
{
    //check if already has focus
    if (mainWindowHandle == GetForegroundWindow())  return;

    //check if window is minimized
    if (IsIconic(mainWindowHandle))
    {
        ShowWindow(mainWindowHandle, Restore);
    }

    // Simulate a key press
    keybd_event(0, 0, 0, 0);

    SetForegroundWindow(mainWindowHandle);
}