TabbedMDIManager Events in Windows Forms TabbedMDI

29 Apr 2021 / 3 minutes to read

The list of events and a detailed explanation about each of them is given in the following sections.

Events table

TabbedMDIManager events Description
BeforeMDIChildAdded event This event is handled before an MDI child is added to the TabbedMDIManager.
BeforeDropDownPopup event This event is handled to set the visual drop-down styles for the drop-down button.
TabControlAdded event Using this event, the fonts of active and inactive tabs can be customized.
TabControlAdding event This event is handled when a tab control is added.
TabControlRemoved event This event is handled after a tab control is removed from a tab group.
UnLockingMdIClient event This event is handled to notify that the locked MDI client area is being unlocked.

BeforeMDIChildAdded event

This BeforeMDIChildAdded event occurs before an MDIChild is added to the TabbedMDIManager.

private void tabbedMDIManager1_BeforeMDIChildAdded(object sender, MDIChildAddCancelEventArgs e)

{

MessageBox.Show(args.NewControl.ToString() + "is added!");

}
Private Sub tabbedMDIManager1_BeforeMDIChildAdded(ByVal sender As Object, ByVal e As MDIChildAddCancelEventArgs)

MessageBox.Show(args.NewControl.ToString() + "is added!")

End Sub

BeforeDropDownPopup event

This BeforeDropDownPopup events is discussed in DropDown Button topic.

TabControlAdded event

This TabControlAdded event is explained in how to customize the fonts of Active and Inactive Tabs topic under Frequently Asked Questions.

TabControlAdding event

This TabControlAdding event is handled when a tab control is added and it provides options to customize tab controls.

private void tabbedMDIManager1_TabControlAdding(object sender, TabbedMDITabControlEventArgs e)

{

MessageBox.Show(e.TabControl.Text.ToString());

}
Private Sub tabbedMDIManager1_TabControlAdding(ByVal sender As Object, ByVal e As TabbedMDITabControlEventArgs)

MessageBox.Show(e.TabControl.Text.ToString())

End Sub

TabControlRemoved event

This TabControlRemoved event is handled after a tab control is removed from a tab group.

private void tabbedMDIManager1_TabControlRemoved(object sender, TabbedMDITabControlEventArgs e)

{

MessageBox.Show(e.TabControl.Text.ToString());

}
Private Sub tabbedMDIManager1_TabControlRemoved(ByVal sender As Object, ByVal e As TabbedMDITabControlEventArgs)

MessageBox.Show(e.TabControl.Text.ToString())

End Sub

UnLockingMdIClient event

This UnLockingMdIClient event is handled to notify that the locked MDI client area is being unlocked.

private void tabbedMDIManager1_UnLockingMdiClient(object sender, EventArgs e)

{

Console.Write("UnlockingMDIClient event is Raised");

}
Private Sub tabbedMDIManager1_UnLockingMdiClient(ByVal sender As Object, ByVal e As EventArgs)

Console.Write("UnlockingMDIClient event is Raised")

End Sub