Form1.h

#include "test2.h"
#pragma once


namespace test_WFA {

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


	/// <summary>
	/// Summary for Form1
	///
	/// WARNING: If you change the name of this class, you will need to change the
	///          'Resource File Name' property for the managed resource compiler tool
	///          associated with all .resx files this class depends on.  Otherwise,
	///          the designers will not be able to interact properly with localized
	///          resources associated with this form.
	/// </summary>
	
	
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:	
	static SampleListener* listener;
	static Controller* controller;
	
	public: System::Windows::Forms::TextBox^  textBox1;
	public: System::Windows::Forms::TextBox^  textBox2;
			 
	public:
		Form1(void)
		{
			InitializeComponent();
			
			//
			//TODO: Add the constructor code here
			//
			listener=new SampleListener();
			controller=new Controller(*listener);  
		}
	
	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
				delete listener;
				delete controller;
			}
			
		}
	private: System::Windows::Forms::Button^  button1;
	protected: 

	private:
		/// <summary>
		/// Required designer variable.
		/// </summary>
		System::ComponentModel::Container ^components;
	private: System::Windows::Forms::Button^  button2;
			 Thread^ myThread;

#pragma region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		void InitializeComponent(void)
		{
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->textBox2 = (gcnew System::Windows::Forms::TextBox());
			this->SuspendLayout();
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(66, 30);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(75, 23);
			this->button1->TabIndex = 0;
			this->button1->Text = L"GO";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(147, 30);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(75, 23);
			this->button2->TabIndex = 1;
			this->button2->Text = L"STOP";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(66, 60);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(100, 22);
			this->textBox1->TabIndex = 2;
			// 
			// textBox2
			// 
			this->textBox2->Location = System::Drawing::Point(66, 89);
			this->textBox2->Name = L"textBox2";
			this->textBox2->Size = System::Drawing::Size(100, 22);
			this->textBox2->TabIndex = 3;
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(8, 16);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(267, 139);
			this->Controls->Add(this->textBox2);
			this->Controls->Add(this->textBox1);
			this->Controls->Add(this->button2);
			this->Controls->Add(this->button1);
			this->Name = L"Form1";
			this->Text = L"Form1";
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
		private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
			//myThread = gcnew Thread(gcnew ThreadStart(this, &test_WFA::Form1::ThreadProc));            
			//myThread->Start();
					 controller->addListener(*listener);
		}
		private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {	
			
			//myThread->Suspend();
					 controller->removeListener(*listener);
		}

		
	};
	
	
}

test2.h

#include <Windows.h>
#include <Tlhelp32.h>
#include <time.h>
#include "Leap.h"
#include "stdafx.h"


namespace test_WFA {

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


	ref class Form1;
	class SampleListener;
	
	class SampleListener : public Listener {
	public:
	virtual void onInit(const Controller&);
    virtual void onConnect(const Controller&);
    virtual void onDisconnect(const Controller&);
    virtual void onExit(const Controller&);
    virtual void onFrame(const Controller&);
	};


	
	void SampleListener::onInit(const Controller& controller) {
  std::cout << "Initialized" << std::endl;
}

void SampleListener::onConnect(const Controller& controller) {
  std::cout << "Connected" << std::endl;
}

void SampleListener::onDisconnect(const Controller& controller) {
  std::cout << "Disconnected" << std::endl;
}

void SampleListener::onExit(const Controller& controller) {
  std::cout << "Exited" << std::endl;
}

void SampleListener::onFrame(const Controller& controller) {
	
  // Get the most recent frame and report some basic information

  const Frame frame = controller.frame();
  

  if (!frame.hands().empty()) {
    
	// Get the first hand
    const Hand hand = frame.hands()[0];
	Vector avgPos;
	avgPos.x=0;
	avgPos.y=0;
	avgPos.z=0;
    // Check if the hand has any fingers
    const FingerList fingers = hand.fingers();
    if (!fingers.empty()) {
      // Calculate the hand's average finger tip position
      Vector avgPos;
      for (int i = 0; i < fingers.count(); ++i) {
        avgPos += fingers[i].tipPosition();
      }
      avgPos /= (float)fingers.count();			
     
    }

    // Get the hand's sphere radius and palm position
   
    // Get the hand's normal vector and direction
    const Vector normal = hand.palmNormal();
    const Vector direction = hand.direction();
	const double XSCALEFACTOR = 65535 / (GetSystemMetrics(SM_CXSCREEN) - 1);
	const double YSCALEFACTOR = 65535 / (GetSystemMetrics(SM_CYSCREEN) - 1);
		
			// calculate target position relative to application
			INPUT Input={0};
			Input.type = INPUT_MOUSE;
		    // set move cursor directly and left click
			Input.mi.dwFlags = MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE ;
			Input.mi.dx = ((400.0+avgPos.x)/800.0)*65535;
      // Here I want to access Form1.textbox1.Text to write mi.dx
			Input.mi.dy = ((avgPos.y)/440.0)*65535;
			SendInput(1,&Input,sizeof(INPUT));
		
    }
}