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Form1.h 内

#pragma once

#include "Obj.h"
namespace MakeObj {

	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;

--中略--

			this->Text = L"Form1";
			this->ResumeLayout(false);

		}
#pragma endregion
	private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
				 Obj::Make(this,this);

			 }
	};
}


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Obj.h (クラスのヘッダーファイル)内

#pragma once

ref class Obj
{
public:
	Obj(void);
	static void Make(System::Windows::Forms::Control^);
};
 
---------------------------------------------------

Obj.cpp (クラスの実装部分)内

#include "StdAfx.h"
#include "Obj.h"

Obj::Obj(void)
{
}

void Obj::Make(System::Windows::Forms::Control^ frm)
{
System::Windows::Forms::Button^ button2;
button2 = gcnew System::Windows::Forms::Button(); //ボタンインスタンス化
frm->Controls->Add(button2);
	

}

---------------------------------------------------