Button Detection

How do I check if a button has been depressed? and if so, then how can i make a label say "Button has been clicked"?

Here's what I've got, but Visual C++ gives a build error.

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#pragma once

namespace SimpleCalc {

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

	/// <summary>
	/// Summary for Form1
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: Add the constructor code here
			//
		}

	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Button^  button1;
	protected: 
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::Windows::Forms::Label^  label1;


	private:
		/// <summary>
		/// Required designer variable.
		/// </summary>
		System::ComponentModel::Container ^components;

#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->label1 = (gcnew System::Windows::Forms::Label());
			this->SuspendLayout();
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(12, 190);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(87, 27);
			this->button1->TabIndex = 0;
			this->button1->Text = L"button1";
			this->button1->UseVisualStyleBackColor = true;
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(201, 190);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(88, 27);
			this->button2->TabIndex = 1;
			this->button2->Text = L"button2";
			this->button2->UseVisualStyleBackColor = true;
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(99, 49);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(102, 20);
			this->textBox1->TabIndex = 2;
			// 
			// label1
			// 
			this->label1->AutoSize = true;
			this->label1->Location = System::Drawing::Point(133, 126);
			this->label1->Name = L"label1";
			this->label1->Size = System::Drawing::Size(35, 13);
			this->label1->TabIndex = 3;
			this->label1->Text = L"label1";
			this->label1->Click += gcnew System::EventHandler(this, &Form1::label1_Click);
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(292, 266);
			this->Controls->Add(this->label1);
			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();
			if (this->button1 == true)
			{
				this->label1 = "Button 1";
			}
		}
#pragma endregion
	private: System::Void label1_Click(System::Object^  sender, System::EventArgs^  e) {
			 }
	};
}
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