From what should you descend your component? (Views: 30)
Problem/Question/Abstract: From what should you descend your component? Answer: The easiest way is to decend from an existing component that has most of the characteristics you are looking for. If you have to create a custom component from "scratch" then use one of the classes listed below. TComponent - The base starting point for non-visual components. TWinControl - The base starting point for components that need to have window handles. TGraphicControl - A good starting point for visual components that don't need the overhead of a window handle. This class has a Paint method, that should be overridden, but no canvas. TCustomControl - The most common starting point for visual components. This class has a Window handle, common events and properties, and most importantly a canvas with a Paint() method. |