Property editors are custom dialogs for editing special properties of a component. The standard property types, such as strings, images, or enumerated types, have default property editors, but special property types may require you to write custom property editors.
Custom property editors must extend from the class TPropertyEditor or one of its descendant classes. Property editors must be registered in the Register procedure using the function RegisterPropertyEditor from the unit PropEdits. An example of property editor class declaration is given as follows:
TPropertyEditor = class
public
function AutoFill: Boolean; Virtual;
procedure Edit; Virtual; // double-clicking the property value to activate
procedure ShowValue; Virtual; //control-clicking the property value to activate
function GetAttributes: TPropertyAttributes; Virtual;
function GetEditLimit: Integer; Virtual;
function GetName: ShortString; Virtual;
function GetHint(HintType...