About Windows MessageBox

Today, the manager asked us a few questions about the windows message mechanism.

Create a new dialog box project and put two buttons on it.

The btn1 and btn2 events create two non-modal dialogs respectively, and then put a button above, the button event responds to MessageBox.

Now, click "button1" and "button2" of the primary dialog, and then click "button" in the modal box. A main dialog box, two modal dialogs, and two messageboxes are displayed. At this time, MessageBox blocks the message queue.

Click MessageBox in the mode dialog box, but the return result of MessageBox does not continue to go down, but waits.

I am not quite clear about it. If you are interested, try it.