funcs_any_win.py 文件源码

def window__activate(hwnd):
    # Give the window the focus.  This is the Microsoft Magic Focus Dance.
    current_hwnd = windll.user32.GetForegroundWindow()
    current_thread_id = windll.kernel32.GetCurrentThreadId()
    thread_process_id = windll.user32.GetWindowThreadProcessId(current_hwnd, None)
    if thread_process_id != current_thread_id:
        res = windll.user32.AttachThreadInput(thread_process_id, current_thread_id, True)
        # ERROR_INVALID_PARAMETER means that the two threads are already attached.
        if res == 0 and GetLastError() != ERROR_INVALID_PARAMETER:
            # TODO better logging
            print("WARN: could not attach thread input to thread {0} ({1})".format(thread_process_id, GetLastError()))
            return True
    res = windll.user32.SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE)
    if res == 0:
        return False
    # At this point, the window hwnd is valid, so we don't need to fail out
    # if the results are non-zero.  Some of these will not succeed due to
    # attributes of the window, rather than the window not existing.
    windll.user32.SetWindowPos(hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE)
    windll.user32.AttachThreadInput(thread_process_id, current_thread_id, False)
    windll.user32.SetForegroundWindow(hwnd)
    windll.user32.SetFocus(hwnd)
    windll.user32.SetActiveWindow(hwnd)
    return True