Event 

Description 

OnActiveChanged 

Occurs when the Active property of the TzCustomFormDesigner changes 

OnDragDrop 

Occurs when the user drops an object being dragged. 

OnDragOver 

Occurs when the user drags an object over a control. 

OnHandleControlMessage 

Occurs on any message sent to managed controls. 

OnKeyDown 

Occurs only at design mode when user presses down any key. 

OnKeyPress 

Occurs only at design mode when key pressed. 

OnKeyUp 

Occurs only at design mode when user releases key that has been pressed. 

OnMouseDown 

Occurs only at design mode when user presses mouse button. 

OnMouseMove 

Occurs only at design mode when user moves mouse. 

OnMouseUp 

Occurs only at design mode when user releases mouse button. 

 

Event