Vcl.StdCtrls.TComboBox Events

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InheritedProtected
OnAlignInsertBeforeprotectedOccurs when an object with custom alignment is aligned.
OnAlignPositionprotectedOccurs when an object with custom alignment is aligned.
OnCanResizeprotectedOccurs when an attempt is made to resize the control.
OnChangepublishedOccurs when the user changes the text displayed in the edit region.
OnClickpublishedOccurs when the user clicks the control.
OnCloseUppublishedOccurs when the drop-down list closes up due to some user action.
OnConstrainedResizeprotectedAdjusts the resize constraints.
OnContextPopuppublishedOccurs when the user right-clicks the control or otherwise invokes the pop-up menu (such as using the keyboard).
OnDblClickpublishedOccurs when the user double-clicks the left mouse button when the mouse pointer is over the control.
OnDockDropprotectedOccurs when another control is docked to the control.
OnDockOverprotectedOccurs when another control is dragged over the control.
OnDragDroppublishedOccurs when the user drops an object being dragged.
OnDragOverpublishedOccurs when the user drags an object over a control.
OnDrawItempublishedOccurs when an item in an owner-draw combo box needs to be displayed.
OnDropDownpublishedOccurs when the user opens the drop-down list.
OnEndDockpublishedOccurs when the dragging of an object ends, either by docking the object or by canceling the dragging.
OnEndDragpublishedOccurs when the dragging of an object ends, either by dropping the object or by canceling the dragging.
OnEnterpublishedOccurs when a control receives the input focus.
OnExitpublishedOccurs when the input focus shifts away from one control to another.
OnGesturepublishedOccurs when you perform a gesture associated with this control.
OnGetDeltaStreamsprotected
OnGetSiteInfoprotectedReturns the control's docking information.
OnKeyDownpublishedOccurs when a user presses any key while the control has focus.
OnKeyPresspublishedOccurs when a key is pressed.
OnKeyUppublishedOccurs when the user releases a key that was pressed.
OnMeasureItempublishedOccurs when an item in a csOwnerDrawVariable combo box needs to be redisplayed.
OnMouseActivateprotectedOccurs when the user presses a mouse button with the mouse pointer over a control and the parent form is not active.
OnMouseDownprotectedOccurs when the user presses a mouse button with the mouse pointer over a control.
OnMouseEnterpublishedOccurs when the user moves the mouse into a control.
OnMouseLeavepublishedOccurs when the user moves the mouse outside of a control.
OnMouseMoveprotectedOccurs when the user moves the mouse pointer while the mouse pointer is over a control.
OnMouseUpprotectedOccurs when the user releases a mouse button that was pressed with the mouse pointer over a component.
OnMouseWheelprotectedOccurs when the mouse wheel is rotated.
OnMouseWheelDownprotectedOccurs when the mouse wheel is rotated downward.
OnMouseWheelUpprotectedOccurs when the mouse wheel is rotated upward.
OnResizeprotectedOccurs immediately after the control is resized.
OnSelectpublishedOccurs when the user selects a string in the drop-down list.
OnStartDockpublishedOccurs when the user begins to drag a control with a DragKind of dkDock.
OnStartDragpublishedOccurs when the user begins to drag the control or an object it contains by left-clicking the control and holding the mouse button down.
OnUnDockprotectedOccurs when the application tries to undock a control that is docked to the windowed control.
WindowProcpublicPoints to the window procedure that responds to messages sent to the control.