MDIChild: IFormControl;
The MDIChild property returns the closed MDI child form.
Executing the example requires a form. This form is a MDI parent form that contains several child ones. The value of the Tag property of the MDI forms is changed during the form work.
Sub FormOnMDIClose(Sender: Object; Args: IMDICloseEventArgs);
Begin
If Args.MDIChild.Tag = 100 Then
Args.Allow := False;
End If;
End Sub FormOnMDIClose;
After executing the example, if the user tries to close the MDI child form, if its Tag property is 100, the form closing is cancelled.
See also: