Remove BEvent, BEventHandler, and BEventArgs
Remove BFormClosedEventArgs and BFormClosedEventHandler
Remove BFormClosingEventArgs and BFormClosingEventHandler
Remove BKeyEventArgs and BKeyEventHandler
Remove BKeyPressEventArgs and BKeyPressEventHandler
Remove BMouseEventArgs and BMouseEventHandler
Remove BPreviewKeyDownEventArgs and BPreviewKeyDownEventHandler
Remove BPaintEventArgs and BPaintEventHandler
Remove BVScrollBar and BHScrollBar
Remove BButton
Remove BCheckBox
Remove BComboBox
Remove BGroupBox
Remove BLabel
Remove BListBox
Remove BListView and BListViewItem
Remove BMenu, BMenuItem, and BMenuSeparator
Remove BPopupMenu and BMenuBar
Remove BPanel, BMouseButtons, and BScrollBar
Remove BFontChooser