MFC button disabled implementation

MFC button disabled

m_Bn_xxx.EnableWindow(FALSE);

I encountered a very stupid problem (every time I disable it, it becomes usable by myself), and I found out the problem after working all afternoon. I
wrote a OnKickIdle（）function, which can realize the loop, and I wrote it again in the function body UpdateDialogControls（this，TRUE）; the result is Constantly updating, even though I have set the buttons to be disabled, it still has no effect.