I GIVE UP, how do I modify this code to call from one form to the other and back

[V5dave]

I finally give up. I have here two very simple forms that (for demonstration purposes) consist of a single click button. When you click on the button, the form becomes invisible, and the other becomes visible. you can keep going back and forth till your coffee needs re-heating in the the microwave having developed a really nice thick skin!!

BUT IT DOESN'T WORK!!!!

I obviously wanna do much more than this, but what I'm trying to do is to write successfully from one form to the other and back, then a whole world of possibilities are opened up to me. I have tried many ways (hence the comments) but always get compiler errors such as
error C2512: 'datapassing::Form1' : no appropriate default constructor available
amongst others.

Using Microsoft Visual C++.NET V2003

I could manage forms untill .NET decided to manage them for me!!

Form 1

#pragma once
#include "Form2.h"

namespace datapassing
{
	//public __gc class Form2;
	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;

	public __gc class Form1 : public System::Windows::Forms::Form
	{	
	public:
//		TellForm2Something( Form2* pForm2 );
//		void TellForm2Something( Form2* pForm2 )
//		{
//			pForm2->make_visible();
//		}
		Form2 *pFrm2;
	public:
		Form1(void)
		{
			InitializeComponent();
			pFrm2 = new Form2;
		}
  
	public:
		void make_visible(void)
		{
			this->Visible = true;
		}

//STANDARD INITIALISATION AND DISPOSING CODE

	private: System::Void button1_Click(System::Object *  sender, System::EventArgs *  e)
			 {
//				TellForm2Something(Form2);
				pFrm2->Visible = true;
				this->Visible = false;
			 }

	};
}

Form 2

#pragma once
#using <mscorlib.dll>

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;


namespace datapassing
{
	public __gc class Form1;
	public __gc class Form2 : public System::Windows::Forms::Form
	{
	public: 
//		TellForm1Something( Form1* pForm1 );
//		void TellForm1Something( Form1* pForm1 )
//		{
//			pForm1->make_visible();
//		}
		Form1 *pFrm1;
	public: 
		Form2(void)
		{
			InitializeComponent();
			pFrm1 = new Form1;
		}
        
	public:
		void make_visible(void)
		{
			this->Visible = true;
		}

//STANDARD INITIALISATION AND DISPOSING CODE

	private: System::Void button1_Click(System::Object *  sender, System::EventArgs *  e)
			 {
				pFrm1->Visible = true;
				//pFrm1->make_visible();
				//TellForm1Something(Form1);
				this->Visible = false;

			 }

	};
}