WebMessageDialogButton.Cancel
From Xojo Documentation
Property (As Boolean )
aWebMessageDialogButton.Cancel = newBooleanValue
or
BooleanValue = aWebMessageDialogButton.Cancel
New in 2020r1
Supported for all project types and targets.
or
BooleanValue = aWebMessageDialogButton.Cancel
New in 2020r1
Supported for all project types and targets.
If True, the Escape key is mapped to this button.
See Also
WebMessageDialog class.