After the messagebox closes the main application close button is still not working and stays not working until I close my form. My form is modal. Is this the cause?

>Hi Jos,
>
>if the messagebox is active the app will normaly not close. The messagebox is modal.
>
>Agnes
>>Hi
>>
>>What causes the main application close button to sometimes not be available, not function? If I open a form the main application close button sometimes stops working. What are the conditions that cause this and is there a way to always have the main application close button function?
>>
>>It seems to be related to when I pop up a messagebox because immediately upon a message box being called by the form the close button on the main application deactivates.