Vcl.Forms.TForm Events

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InheritedProtected

OnActivate	published	Occurs when the form becomes active.
OnAfterMonitorDpiChanged	published	Occurs immediately after the user changes the monitor DPI.
OnAlignInsertBefore	published	Occurs when an object with custom alignment is aligned.
OnAlignPosition	published	Occurs when an object with custom alignment is aligned.
OnBeforeMonitorDpiChanged	published	Occurs immediately before the user changes the monitor DPI.
OnCanResize	published	Occurs when an attempt is made to resize the control.
OnClick	published	Occurs when the user clicks the control.
OnClose	published	Occurs when the form closes.
OnCloseQuery	published	Occurs when close is attempted.
OnConstrainedResize	published	Adjusts the resize constraints.
OnContextPopup	published	Occurs when the user right-clicks the control or otherwise invokes the pop-up menu (such as using the keyboard).
OnCreate	published	Occurs when the form is created.
OnDblClick	published	Occurs when the user double-clicks the left mouse button when the mouse pointer is over the control.
OnDeactivate	published	Occurs when the form loses focus.
OnDestroy	published	Occurs when the form is destroyed.
OnDockDrop	published	Occurs when another control is docked to the control.
OnDockOver	published	Occurs when another control is dragged over the control.
OnDragDrop	published	Occurs when the user drops an object being dragged.
OnDragOver	published	Occurs when the user drags an object over a control.
OnEndDock	published	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	published	Occurs when you perform a gesture associated with this control.
OnGetDeltaStreams	protected
OnGetSiteInfo	published	Returns the control's docking information.
OnHelp	published	Occurs when the form receives a request for Help.
OnHide	published	Occurs when the form is hidden (that is, when its Visible property is set to false).
OnKeyDown	published	Occurs when a user presses any key while the control has focus.
OnKeyPress	published	Occurs when a key is pressed.
OnKeyUp	published	Occurs when the user releases a key that was pressed.
OnMouseActivate	published	Occurs when the user presses a mouse button with the mouse pointer over a control and the parent form is not active.
OnMouseDown	published	Occurs when the user presses a mouse button with the mouse pointer over a control.
OnMouseEnter	published	Occurs when the user moves the mouse into a control.
OnMouseLeave	published	Occurs when the user moves the mouse outside of a control.
OnMouseMove	published	Occurs when the user moves the mouse pointer while the mouse pointer is over a control.
OnMouseUp	published	Occurs when the user releases a mouse button that was pressed with the mouse pointer over a component.
OnMouseWheel	published	Occurs when the mouse wheel is rotated.
OnMouseWheelDown	published	Occurs when the mouse wheel is rotated downward.
OnMouseWheelUp	published	Occurs when the mouse wheel is rotated upward.
OnPaint	published	Occurs when the form is redrawn.
OnResize	published	Occurs immediately after the control is resized.
OnShortCut	published	Occurs when the user presses a key (before the OnKeyDown event).
OnShow	published	Occurs when the form is shown (that is, when its Visible property is set to true).
OnStartDock	published	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	published	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.