Visual C++ .NET/GUI Form/Form

OnPaint

 
  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 ref class Form1 : public System::Windows::Forms::Form
  {
  public:
    Form1(void)
    {
            this->SuspendLayout();
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(292, 273);
            this->Name = L"Form1";
            this->Text = L"Form1";
            this->Paint += 
                gcnew System::Windows::Forms::PaintEventHandler(this, 
                                                           &Form1::Form1_Paint);
            this->ResumeLayout(false);
    }
        virtual void OnPaint(System::Windows::Forms::PaintEventArgs ^e) override
        {
//          Form::OnPaint(e);
            e->Graphics->DrawString("Hello GDI+", 
               gcnew Drawing::Font("Arial", 16), Brushes::Black, 75.0, 110.0);
            Form::OnPaint(e);
        }
        System::Void Form1_Paint(System::Object^ sender,
                                 System::Windows::Forms::PaintEventArgs^ e)
        {
            e->Graphics->DrawString("Hello GDI+", 
                gcnew Drawing::Font("Arial", 16), Brushes::Purple, 75.0, 110.0);
        }
  };

[STAThreadAttribute]
int main(array<System::String ^> ^args)
{
  Application::Run(gcnew Form1());
  return 0;
}

subclass Form

 

[STAThreadAttribute]
int main(array<System::String ^> ^args)
{
  Application::Run(gcnew Form1());
  return 0;
}

  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 ref class Form1 : public System::Windows::Forms::Form
  {
  public:
    Form1(void)
    {
      InitializeComponent();
    }

  private:
    System::ComponentModel::Container ^components;
    void InitializeComponent(void)
    {
      this->SuspendLayout();
      // 
      // Form1
      // 
      this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
      this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
      this->BackColor = System::Drawing::Color::Black;
      this->ClientSize = System::Drawing::Size(692, 276);
      this->Cursor = System::Windows::Forms::Cursors::UpArrow;
      this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::SizableToolWindow;
      this->Name = L"Form1";
      this->SizeGripStyle = System::Windows::Forms::SizeGripStyle::Show;
      this->Text = L"Custom Hello";
      this->TopMost = true;
      this->ResumeLayout(false);
    }
  };