Name 

Description 

 

OnAfterDrawButton 

Fired after a button is drawn 

 

OnAlignInsertBefore 

Occurs when an object with custom alignment is aligned. 

 

OnAlignPosition 

Occurs when an object with custom alignment is aligned. 

 

OnBeforeDrawButton 

Fired before a button is drawn 

 

OnButtonClicked 

Fired when a button is clicked, if OnClick event is not present 

 

OnCategoryClicked 

This is OnCategoryClicked, a member of class TCategoryButtons. 

 

OnCategoryCollapase 

Fired when a category is collapsed 

 

OnClick 

Occurs when mouse button goes up. 

 

OnContextPopup 

Occurs when the user right-clicks the control or otherwise invokes the popup menu (such as using the keyboard). 

 

OnCopyButton 

Fired when a button is copied 

 

OnDockDrop 

Occurs when another control is docked to the control. 

 

OnDockOver 

Occurs when another control is dragged over the control. 

 

OnDragDrop 

Occurs when the user drops an object being dragged. 

 

OnDragOver 

Occurs when the user drags an object over a control. 

 

OnDrawButton 

Fired when a button needs to be redrawn; it prevents default drawing. 

 

OnDrawIcon 

Fired when an icon needs to be redrawn; it prevents default drawing. 

 

OnDrawText 

Fired when a caption needs to be redrawn; it prevents default drawing. 

 

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. 

 

OnGetHint 

Fired when a hint string is being retrieved 

 

OnHotButton 

Fired when the "hot" button changes 

 

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 

 

OnReorderCategory 

Fired when categories are reordered 

 

OnSelectedCategoryChange 

This is OnSelectedCategoryChange, a member of class TCategoryButtons. 

 

OnSelectedItemChange 

Fired when the selected item changes 

 

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.