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　　一个bpk项目，安装编译生成的bpl后在object repository出现自定义窗体模板，可通过该模板创建自己的Form.

该模板部分代码如下：

namespace Adfexperts
{
    void __fastcall PACKAGE Register()
    {
        RegisterLibraryExpert(new TBaseADFExpert);
        RegisterCustomModule(__classid(TForm_ADFBaseForm), __classid(TBaseCustomModule));
    }
}

//-------------------------------------------------------------------------
void HandleException(void)
{
    ToolServices->RaiseException(ReleaseException());
}
//---------------------------------------------------------------------------

TExpertStyle __stdcall TBaseADFExpert::GetStyle()
{
    return esForm;
}

AnsiString __stdcall TBaseADFExpert::GetName()
{
    return "A";
}

AnsiString __stdcall TBaseADFExpert::GetAuthor()
{
    return "article";
}

AnsiString __stdcall TBaseADFExpert::GetComment()
{
    return "AD";
}

AnsiString __stdcall TBaseADFExpert::GetPage()
{
    return "";
}

HICON __stdcall TBaseADFExpert::GetGlyph()
{
    return LoadIcon( HInstance,"AAA");
}

TExpertState __stdcall TBaseADFExpert::GetState()
{
    return TExpertState()<<esEnabled;
}

AnsiString __stdcall TBaseADFExpert::GetIDString()
{
    return "aaa";
}

AnsiString __stdcall TBaseADFExpert::GetMenuText()
{
    return "aaa";
}

void __stdcall TBaseADFExpert::Execute()
{
    TForm_SelectFormType* SelectForm = new TForm_SelectFormType(Application);
    TModalResult aResult = SelectForm->ShowModal();
    if (aResult != mrOk)
    {
        delete SelectForm;
        return;
    }

    AnsiString FormTypeName;
    switch (SelectForm->RadioGroup1->ItemIndex)
    {
      case 0: FormTypeName = "Form_ADFBaseForm";
      break;
    }

    AnsiString HeaderFileName;
    switch (SelectForm->RadioGroup1->ItemIndex)
    {
      case 0: HeaderFileName = "ADFBaseForm.h";
      break;
    }

    delete SelectForm;

    AnsiString ModuleName, FormName, FileName;
    TIModuleInterface* ModIntf;


    ToolServices->GetNewModuleAndClassName(
        FormTypeName, ModuleName, FormName, FileName);

    ModIntf = ToolServices->CreateModuleEx(FileName, FormName,
            FormTypeName, "", NULL, NULL,
            TCreateModuleFlags()<< cmShowSource<< cmShowForm<<cmNewForm<< cmAddToProject << cmUnNamed);

    TIEditorInterface* aEditor = ModIntf->GetAuxEditorInterface();
    TIEditWriter* aWriter = aEditor->CreateWriter();
    aWriter->CopyTo(286);
    aWriter->Insert(("\r\n#include \""+HeaderFileName+"\"\r\n").c_str());
    aWriter->Release();
    aEditor->Release();
    ModIntf->Release();
}


   在BCB6编译通过后，运行报Error Creating Form:Interface not supported。
   我怀疑问题在:RegisterCustomModule函数那里，或者是CreateModuleEx函数那里。
   我就这个问题搞了两三天了，依然搞不定．请高手帮我看看，找找问题所在，感激不尽！

呵呵，搞定了，是RegisterCustomModule函数那里出了问题。

RegisterCustomModule(__classid(TForm_ADFBaseForm), __classid(TBaseCustomModule));

应该写成:
RegisterCustomModule(__classid(TForm_ADFBaseForm), __classid(TCustomModule));


BCB6中TCustomModule是在的designeditors.hpp文件中定义的。

呵呵，不错啊：）
如果有兴趣，多多交流哩！
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