Name 

Description 

 

OnAlignInsertBefore 

Occurs when an object with custom alignment is aligned. 

 

OnAlignPosition 

Occurs when an object with custom alignment is aligned. 

 

OnCanResize 

Occurs when an attempt is made to resize the control. 

 

OnConstrainedResize 

Adjust resize constraints. 

 

OnData 

Occurs when a virtual list box needs to supply the text of an item. 

 

OnDataFind 

Occurs when a virtual list box needs to identify the index of an item given its text. 

 

OnDataObject 

Occurs when a virtual list box needs to supply the object associated with an item. 

 

OnDockDrop 

Occurs when another control is docked to the control. 

 

OnDockOver 

Occurs when another control is dragged over the control. 

 

OnDrawItem 

Occurs when an item in an owner-draw list box needs to be redisplayed. 

 

OnEndDock 

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

 

OnGetSiteInfo 

Returns the control's docking information. 

 

OnMeasureItem 

Occurs when the application needs to redisplay an item in a variable height owner-draw list box. 

 

OnMouseWheel 

Occurs when the mouse wheel is rotated. 

 

OnMouseWheelDown 

Occurs when the mouse wheel is rotated downward. 

 

OnMouseWheelUp 

Occurs when the mouse wheel is rotated upward. 

 

OnResize 

Occurs immediately after the control is resized. 

 

OnStartDock 

Occurs when the user begins to drag a control with a DragKind of dkDock. 

 

OnUnDock 

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