How to process the Cancel button in a MessageDialog?

General
1

I have a MessageDialog loaded in my window Closing event. This has Save as the ActionButton, Don’t Save as the AlternateActionButton and a Cancel button. Save triggers a save to disk, Don’t Save does nothing (and the window, and the application, closes). These are working as expected. I would like the Cancel button to dismiss the MessageDialog and allow the user to continue with the program, but I cannot see how to do this. Instead it closes the window and the application (just like the AlternateActionButton).

Is there a way to cancel the window closing event?

Thanks,

Ian.

–

2 
// Window.CancelClose

Var Dialog As New MessageDialog
// Do all your setup

Var Choice As MessageDialogButton = Dialog.ShowModal(Self)
Select Case Choice
Case Dialog.ActionButton
  // Save
Case Dialog.AlternateActionButton
  // Don't Save
Else
  // Cancel or closed
  Return True
End Select

You could skip assigning the button to a variable of course, but this makes it easier to see in the debugger and I think looks cleaner.

Edit: I could have saved myself a little time and just linked to the docs: MessageDialog — Xojo documentation

3

What you’re looking for is the CancelClosing event rather than the Closing event.

This allows you to stop the window from closing by returning True.

4

Thanks for the responses. That is what I was looking for.