delphi – 在对象检查器上显示TFrame后代的附加属性

Delphi对象检查器不会按设计显示TFrame后代的其他属性.
人们倾向于建议使用一种已知的技巧,该技巧通常用于在对象检查器上显示TForm后代的属性.诀窍是：通过设计时包将注册TForm后代的自定义模块注册到Delphi IDE：

RegisterCustomModule(TMyFrame,TCustomModule);

对象检查器可以用这种方式显示TFrame Descendant实例的其他属性,但是当它嵌入到表单中时会丢失其框架行为.不可重新设计,不可能为其子组件实现事件,并且它接受子控件(它没有).但它在自己的设计领域表现正常.

看起来,这些行为是由Delphi IDE专门为TFrame提供的.他们可能不是一般的设施.

有没有其他方法可以实现这一点而不会丢失框架行为？

我正在使用Delphi 2007

@Tondrej,

请提前阅读此问题的评论.

frameunit.dfm：

object MyFrame: TMyFrame
  Left = 0
  Top = 0
  Width = 303
  Height = 172
  TabOrder = 0
  object Edit1: TEdit
    Left = 66
    Top = 60
    Width = 151
    Height = 21
    TabOrder = 0
    Text = 'Edit1'
  end
end

unit frameunit;

interface

uses
  Windows,Messages,SysUtils,Variants,Classes,Graphics,Controls,Forms,Dialogs,StdCtrls;

type
  TBaseFrame = Class(TFrame)
  protected
    Fstr: string;
    procedure Setstr(const Value: string);virtual;
  published
    Property str:string read Fstr write Setstr;
  End;

  TMyFrame = class(TBaseFrame)
    Edit1: TEdit;
  private
    // This won't be called in designtime. But i need this to be called in designtime
    Procedure Setstr(const Value: string);override;
  end;

implementation

{$R *.dfm}

{ TBaseFrame }

procedure TBaseFrame.Setstr(const Value: string);
begin
  Fstr := Value;
end;

{ TMyFrame }

procedure TMyFrame.Setstr(const Value: string);
begin
  inherited;
  Edit1.Text := Fstr;
  // Sadly this code won't work and Edit1 won't be updated in designtime.
end;

end.

unit RegisterUnit;

interface

procedure Register;

implementation

uses
  Windows,DesignIntf,frameunit;

procedure Register;
var
  delphivclide: THandle;
  TFrameModule: TCustomModuleClass;
begin
  delphivclide := GetModuleHandle('delphivclide100.bpl');
  if delphivclide <> 0 then
  begin
    TFrameModule := GetProcAddress(delphivclide,'@Vclformcontainer@TFrameModule@');
    if Assigned(TFrameModule) then
    begin
      RegisterCustomModule(frameunit.TBaseFrame,TFrameModule);
      // Just registering that won't cause Tmyframe to loose its frame behaviours
      // but additional properties won't work well.

      //RegisterCustomModule(frameunit.TMyFrame,TFrameModule);  
      // That would cause Tmyframe to lose its frame behaviours
      // But additional properties would work well.

    end;
  end;
end;


end.

unit FrameTestReg;

interface

procedure Register;

implementation

uses
  Windows,FrameTest;

procedure Register;
var
  delphivclide: THandle;
  TFrameModule: TCustomModuleClass;
begin
  delphivclide := GetModuleHandle('delphivclide100.bpl');
  if delphivclide <> 0 then
  begin
    TFrameModule := GetProcAddress(delphivclide,'@Vclformcontainer@TFrameModule@');
    if Assigned(TFrameModule) then
      RegisterCustomModule(TTestFrame,TFrameModule);
  end;
end;

end.

unit FrameTest;

interface

uses
  Forms;

type
  TTestFrame = class(TFrame)
  private
    FHello: string;
  published
    property Hello: string read FHello write FHello;
  end;

implementation

end.