unit ClrComps;

interface

uses

 SysUtils, WinTypes, WinProcs, Messages, Classes,

 Graphics, Controls, Forms, Dialogs, DsgnIntf;

type

 TColorComponent = class(TComponent)

 private

  FColor: TColor;

 protected

  procedure SetColor(Value: TColor);

 public

  constructor Create(AnOwner: TComponent); override;

 published

  property Color: TColor read FColor write SetColor;

 end;

{ Это специальный редактор свойства выбора цветов... }

 TMyColorProperty = class(TIntegerProperty)

 public

  function GetAttributes: TPropertyAttributes; override;

  function GetValue: string; override;

  procedure GetValues(Proc: TGetStrProc); override;

  procedure SetValue(const Value: string); override;

 end;

procedure Register;

implementation

{ TMyColorProperty }

function TMyColorProperty.GetAttributes: TPropertyAttributes;

begin

 Result := [paMultiSelect, paValueList];

end;

function TMyColorProperty.GetValue: string;

begin

 Result := ColorToString(TColor(GetOrdValue));

end;

procedure TMyColorProperty.GetValues(Proc: TGetStrProc);

begin

 Proc('clRed');

 Proc('clWhite');

 Proc('clBlue');

end;

procedure TMyColorProperty.SetValue(const Value: string);

var

 NewValue: Longint;

begin

 if IdentToColor(Value, NewValue) and

  ((NewValue = clRed) or

  (NewValue = clWhite) or

  (NewValue = clBlue)) then

  SetOrdValue(NewValue);

end;

{ Образец компонента... }

constructor TColorComponent.Create(AnOwner: TComponent);

begin

 inherited Create(AnOwner);

 FColor := clRed;

end;

procedure TColorComponent.SetColor(Value: TColor);

begin

 if (Value = clRed) or

  (Value = clWhite) or

  (Value = clBlue) then

  begin

  FColor := Value;

  end;

end;

procedure Register;

begin

 RegisterComponents('Samples', [TColorComponent]);

 RegisterPropertyEditor(TypeInfo(TColor), TColorComponent,

  'Color', TMyColorProperty);

end;

end.