class MyFormTemplate{
};
 
class abcd:public System::Windows::Forms::Form{  
	//自己建的class不能繼承
        //  error C3625: 'abcd': 不可以從 Managed 型別 'System::Windows::Forms::Form' 中衍生 
        //                       Unmanaged 型別
        //  1>c:\...\system.windows.forms.dll : 請參閱 'System::Windows::Forms::Form' 的宣告
  ...
};
//public ref class Form1 : public System::Windows::Forms::Form 這是原來的
public ref class Form1 :public MyFormTemplate
{
        //error C2811: 'test::Form1' : 無法從 'MyFormTemplate' 繼承，ref 類別 
        //                             只能從 ref 類別或介面類別 繼承
  ...
};

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