Name 

Description 

 

OnAfterDrawButton 

Occurs after a button is drawn. 

 

OnAlignInsertBefore 

Occurs when an object is aligned. 

 

OnAlignPosition 

Occurs when a control is aligned to a new position. 

 

OnBeforeDrawButton 

Occurs just before a button is drawn. 

 

OnButtonClicked 

Occurs when a button is clicked, if the OnClick event is not present. 

 

OnClick 

Occurs when the user clicks the control. 

 

OnContextPopup 

Occurs when a user right-clicks on the dock site to display the popup menu. 

 

OnDockDrop 

Occurs when the control is dropped by a release of the mouse button. 

 

OnDockOver 

Occurs when the control is being moved over another control, but has not yet been docked. 

 

OnDragDrop 

Occurs when the user drops an object being dragged. 

 

OnDragOver 

Occurs when the user drags an object over a control. 

 

OnDrawButton 

Occurs when a button is redrawn. 

 

OnDrawIcon 

Occurs when an icon is redrawn. 

 

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 the control gets focus. 

 

OnExit 

Occurs when the control loses focus, typically in tabbing between controls. 

 

OnHotButton 

Fired when the mouse pointer is over the button. 

 

OnKeyDown 

Occurs when a user presses any key while the control has focus. 

 

OnKeyPress 

Occurs when a key is pressed. 

 

OnKeyUp 

Occurs when the user releases a key that has been pressed. 

 

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. 

 

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. 

 

OnReorderButton 

Fired when buttons are reordered in the button group. 

 

OnStartDock 

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

 

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.