Vcl.Controls.TWinControl Events

OnAlignInsertBefore protected Occurs when an object with custom alignment is aligned.

OnAlignPosition protected Occurs when an object with custom alignment is aligned.

OnCanResize protected Occurs when an attempt is made to resize the control.

OnClick protected Occurs when the user clicks the control.

OnConstrainedResize protected Adjusts the resize constraints.

OnContextPopup protected Occurs when the user right-clicks the control or otherwise invokes the pop-up menu (such as using the keyboard).

OnDblClick protected Occurs when the user double-clicks the left mouse button when the mouse pointer is over the control.

OnDockDrop protected Occurs when another control is docked to the control.

OnDockOver protected Occurs when another control is dragged over the control.

OnDragDrop protected Occurs when the user drops an object being dragged.

OnDragOver protected Occurs when the user drags an object over a control.

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

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

OnEnter protected Occurs when a control receives the input focus.

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

OnGesture public Occurs when you perform a gesture associated with this control.

OnGetDeltaStreams protected

OnGetSiteInfo protected Returns the control's docking information.

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

OnKeyPress protected Occurs when a key is pressed.

OnKeyUp protected Occurs when the user releases a key that was pressed.

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

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

OnMouseEnter protected Occurs when the user moves the mouse into a control.

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

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

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

OnMouseWheel protected Occurs when the mouse wheel is rotated.

OnMouseWheelDown protected Occurs when the mouse wheel is rotated downward.

OnMouseWheelUp protected Occurs when the mouse wheel is rotated upward.

OnResize protected Occurs immediately after the control is resized.

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

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

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

WindowProc public Points to the window procedure that responds to messages sent to the control.