Name 

Description 

 

OnAlignInsertBefore 

Occurs when an object with custom alignment is aligned. 

 

OnAlignPosition 

Occurs when an object with custom alignment is aligned. 

 

OnChange 

Occurs just before a new tab is selected. 

 

OnClick 

Occurs when the user clicks the control. 

 

OnDockDrop 

Occurs when the control is released from the mouse control and dropped onto the client. 

 

OnDockOver 

Occurs when the tabbed control is hovering over the dock site. 

 

OnDragDrop 

Occurs when the user drops an object being dragged. 

 

OnDragOver 

Occurs when the user drags an object over a control. 

 

OnDrawTab 

Occurs when a tab in an owner-drawn tab set control needs to redisplay. 

 

OnEndDock 

Occurs when the dragging of an object ends, either by docking the object or by canceling the dragging. 

 

OnEndDrag 

Occurs when the dragging of an object ends, either by dropping the object or by canceling the dragging. 

 

OnEnter 

Occurs when a control receives the input focus. 

 

OnExit 

Occurs when the input focus shifts away from one control to another. 

 

OnGetSiteInfo 

Returns information about the site or client control on which the tab control is docked. 

 

OnMeasureTab 

Occurs when an application needs to redisplay a tab in an owner-draw tab set. 

 

OnMouseActivate 

Occurs when the user presses a mouse button with the mouse pointer over a control and the parent form is not active. 

 

OnMouseDown 

Occurs when the user presses a mouse button with the mouse pointer over a control. 

 

OnMouseEnter 

Occurs when the user moves the mouse into a control. 

 

OnMouseLeave 

Occurs when the user moves the mouse outside of a control. 

 

OnMouseMove 

Occurs when the user moves the mouse pointer while the mouse pointer is over a control. 

 

OnMouseUp 

Occurs when the user releases a mouse button that was pressed with the mouse pointer over a component. 

 

OnStartDock 

Occurs when the user begins to drag a control to a docked position. 

 

OnStartDrag 

Occurs when the user begins to drag the control or an object it contains by left-clicking on the control and holding the mouse button down. 

 

OnTabAdded 

Occurs when a tab is added to the tab control. 

 

OnTabRemoved 

Occurs when a tab is removed from the tab control. 

 

OnUnDock 

Occurs when the application tries to undock a control that is docked to the windowed control.