C++ Interface functions example

#pragma once
#include <math.h>
#include <string>


namespace Interface1 {
double a, r , aps;
const double PI = 3.141592;

    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
    ///
    /// 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:
        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::Label^  label1;
    protected:

    private: System::Windows::Forms::TextBox^  textBox1;
    //private: void suma() ;
    private: System::Windows::Forms::Label^  label3;
    private: System::Windows::Forms::Button^  button1;
    private: System::Windows::Forms::PictureBox^  pictureBox1;
    private: System::Windows::Forms::RadioButton^  radioButton1;
    private: System::Windows::Forms::RadioButton^  radioButton2;
    private: System::Windows::Forms::RadioButton^  radioButton3;
    private: System::Windows::Forms::Label^  label2;
    private: System::Windows::Forms::CheckBox^  checkBox1;


    protected:

    protected:

    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)
        {
            System::ComponentModel::ComponentResourceManager^  resources = (gcnew System::ComponentModel::ComponentResourceManager(Form1::typeid));
            this->label1 = (gcnew System::Windows::Forms::Label());
            this->textBox1 = (gcnew System::Windows::Forms::TextBox());
            this->label3 = (gcnew System::Windows::Forms::Label());
            this->button1 = (gcnew System::Windows::Forms::Button());
            this->pictureBox1 = (gcnew System::Windows::Forms::PictureBox());
            this->radioButton1 = (gcnew System::Windows::Forms::RadioButton());
            this->radioButton2 = (gcnew System::Windows::Forms::RadioButton());
            this->radioButton3 = (gcnew System::Windows::Forms::RadioButton());
            this->label2 = (gcnew System::Windows::Forms::Label());
            this->checkBox1 = (gcnew System::Windows::Forms::CheckBox());
            (cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->BeginInit();
            this->SuspendLayout();
            //
            // label1
            //
            this->label1->AutoSize = true;
            this->label1->Location = System::Drawing::Point(249, 21);
            this->label1->Name = L"label1";
            this->label1->Size = System::Drawing::Size(97, 17);
            this->label1->TabIndex = 0;
            this->label1->Text = L"Įveskite a dydį";
            this->label1->Click += gcnew System::EventHandler(this, &Form1::label1_Click_1);
            //
            // textBox1
            //
            this->textBox1->Location = System::Drawing::Point(252, 41);
            this->textBox1->Name = L"textBox1";
            this->textBox1->Size = System::Drawing::Size(100, 22);
            this->textBox1->TabIndex = 2;
            //
            // label3
            //
            this->label3->AutoSize = true;
            this->label3->Location = System::Drawing::Point(12, 149);
            this->label3->Name = L"label3";
            this->label3->Size = System::Drawing::Size(75, 17);
            this->label3->TabIndex = 4;
            this->label3->Text = L"Rezultatas";
            this->label3->Click += gcnew System::EventHandler(this, &Form1::label3_Click);
            //
            // button1
            //
            this->button1->Location = System::Drawing::Point(252, 78);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(100, 41);
            this->button1->TabIndex = 5;
            this->button1->Text = L"Skaičiuoti";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
            //
            // pictureBox1
            //
            this->pictureBox1->Image = (cli::safe_cast<System::Drawing::Image^  >(resources->GetObject(L"pictureBox1.Image")));
            this->pictureBox1->InitialImage = (cli::safe_cast<System::Drawing::Image^  >(resources->GetObject(L"pictureBox1.InitialImage")));
            this->pictureBox1->Location = System::Drawing::Point(15, 21);
            this->pictureBox1->Name = L"pictureBox1";
            this->pictureBox1->Size = System::Drawing::Size(200, 125);
            this->pictureBox1->SizeMode = System::Windows::Forms::PictureBoxSizeMode::AutoSize;
            this->pictureBox1->TabIndex = 6;
            this->pictureBox1->TabStop = false;
            //
            // radioButton1
            //
            this->radioButton1->AutoSize = true;
            this->radioButton1->Location = System::Drawing::Point(378, 41);
            this->radioButton1->Name = L"radioButton1";
            this->radioButton1->Size = System::Drawing::Size(93, 21);
            this->radioButton1->TabIndex = 7;
            this->radioButton1->TabStop = true;
            this->radioButton1->Text = L"Metrai (m)";
            this->radioButton1->UseVisualStyleBackColor = true;
            this->radioButton1->CheckedChanged += gcnew System::EventHandler(this, &Form1::radioButton1_CheckedChanged);
            //
            // radioButton2
            //
            this->radioButton2->AutoSize = true;
            this->radioButton2->Location = System::Drawing::Point(378, 68);
            this->radioButton2->Name = L"radioButton2";
            this->radioButton2->Size = System::Drawing::Size(132, 21);
            this->radioButton2->TabIndex = 8;
            this->radioButton2->TabStop = true;
            this->radioButton2->Text = L"Centimetrai (cm)";
            this->radioButton2->UseVisualStyleBackColor = true;
            //
            // radioButton3
            //
            this->radioButton3->AutoSize = true;
            this->radioButton3->Location = System::Drawing::Point(378, 98);
            this->radioButton3->Name = L"radioButton3";
            this->radioButton3->Size = System::Drawing::Size(53, 21);
            this->radioButton3->TabIndex = 9;
            this->radioButton3->TabStop = true;
            this->radioButton3->Text = L"Kita";
            this->radioButton3->UseVisualStyleBackColor = true;
            //
            // label2
            //
            this->label2->AutoSize = true;
            this->label2->Location = System::Drawing::Point(375, 21);
            this->label2->Name = L"label2";
            this->label2->Size = System::Drawing::Size(121, 17);
            this->label2->TabIndex = 10;
            this->label2->Text = L"Matavimo vienetai";
            //
            // checkBox1
            //
            this->checkBox1->AutoSize = true;
            this->checkBox1->Location = System::Drawing::Point(387, 235);
            this->checkBox1->Name = L"checkBox1";
            this->checkBox1->Size = System::Drawing::Size(123, 21);
            this->checkBox1->TabIndex = 11;
            this->checkBox1->Text = L"Išsaugoti į failą";
            this->checkBox1->UseVisualStyleBackColor = true;
            //
            // Form1
            //
            this->AutoScaleDimensions = System::Drawing::SizeF(8, 16);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(508, 266);
            this->Controls->Add(this->checkBox1);
            this->Controls->Add(this->label2);
            this->Controls->Add(this->radioButton3);
            this->Controls->Add(this->radioButton2);
            this->Controls->Add(this->radioButton1);
            this->Controls->Add(this->pictureBox1);
            this->Controls->Add(this->button1);
            this->Controls->Add(this->label3);
            this->Controls->Add(this->textBox1);
            this->Controls->Add(this->label1);
            this->Name = L"Form1";
            this->Text = L"Eimantas Kasperiūnas ND1";
            this->Load += gcnew System::EventHandler(this, &Form1::Form1_Load);
            (cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->EndInit();
            this->ResumeLayout(false);
            this->PerformLayout();

        }
#pragma endregion
    private: System::Void label1_Click(System::Object^  sender, System::EventArgs^  e) {
             }
    private: System::Void label3_Click(System::Object^  sender, System::EventArgs^  e) {
             }
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
             // aprasymo vieta
             string mvnt;
             if(String::IsNullOrEmpty(textBox1->Text)){
                 MessageBox::Show(L"Įvesta neteisinga reikšmė." ,
                     L"Klaida!",
                     MessageBoxButtons::OK,
                     MessageBoxIcon::Exclamation);
             }
             else{;
             nuskaitymas(a);
             if (radioButton1->Checked){
                 rezultatai(mvnt);}
             }
             }
private: System::Void label1_Click_1(System::Object^  sender, System::EventArgs^  e) {
         }
private:void rezultatai(char mvnt) {
             double s = 0;
             label3-> Text=String::Format("Neuzbruksniuotos figuros plotas yra " + plotas(a,r,aps) ) ;
             label3-> Text += "\n";
             // label3-> Text += "666";
            label3->Text += 'mvnt';
            // + "\n" + "Uzbruksniuotos figuros plotas yra " + (pow(a,2) - plotas(a,r,aps) + mat[1,2,3])
         }
private:void nuskaitymas(double & a) {
            a = Convert::ToDouble(textBox1->Text);
}
private:double plotas (double a, double &rombas, double &apskritimas){
    rombas = pow(a,2) - ((a/2)*(a/2))/2*4;
    apskritimas = PI*pow(a/4,2);
    return pow(a,2) - rombas - apskritimas/2;
}
private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) {
         }
private: System::Void progressBar1_Click(System::Object^  sender, System::EventArgs^  e) {
         }
private: System::Void radioButton1_CheckedChanged(System::Object^  sender, System::EventArgs^  e) {
         }
};
}