TForm.OnPaint property

Declaration

property OnPaint:;

Description

OnPaint is a TNotifyEvent property with the event handler signalled to draw the control on its Canvas. An object procedure which draws all aspects of the control must be implemented and assigned to the property.

The Sender argument provides access to properties and methods for the control instance. It must be cast to a TCustomControl to access members for the class type.

Use Canvas to render the control in the event handler. The values from Font and Color are already applied to the corresponding properties in Canvas. The BorderStyle property must be applied in code for the handler.

OnPaint is signalled from the Paint method.

This description is the one of Controls.TCustomControl.OnPaint.

See also

• Paint
• Canvas
• Font
• Color
• BorderStyle