Learn about delphivcl.CustomControl
April 12, 2021
DelphiVCL.CustomControl is a base class for controls that wrap Windows screen objects but perform their own rendering.
In most descendants of TWinControl, the job of drawing the control’s surface belongs to the underlying Windows screen object. If a control has visible features that cannot be rendered by a Windows screen object, it requires access to a canvas object so it can do its…