Managed C++/CLI

    public ref class Form1 : public System::Windows::Forms::Form
    {
        unsigned char *pBitmapBits;
        Bitmap ^testBitmap;

    public:
        Form1(void)
        {
            InitializeComponent();

            // Make a 120x120 24bpp bitmap - initialize pixels to all red
            pBitmapBits = new unsigned char[120 * 120 * 3];
            for (int x = 0; x < (120*120*3); x += 3)
            {
                pBitmapBits[x+0] = 0;
                pBitmapBits[x+1] = 0;
                pBitmapBits[x+2] = 255;
            }
            testBitmap = gcnew Bitmap(120, 120, 120*3, PixelFormat::Format24bppRgb, IntPtr(pBitmapBits));
        }

...

    private: System::Void testButton_Click(System::Object^  sender, System::EventArgs^  e) 
             {
                 // Put a purple stripe across the bitmap
                for (int x = 120*3*40; x < (120*3*80); x += 3)
                {
                    pBitmapBits[x+0] = 255;
                    pBitmapBits[x+1] = 0;
                    pBitmapBits[x+2] = 255;
                }

                // Render the bitmap so we can see the results
                Graphics ^g = this->CreateGraphics();
                g->DrawImage(testBitmap, 10, 10);
             }
};

Mark Salsbery
Microsoft MVP - Visual C++

void OnResize(Object^ sender, EventArgs^ e)
{
  label1->Width = Width / 2;
  label3->Width = Width / 2;
  label2->Left = Width / 2;
  label4->Left = Width / 2;
}

|label 1|
        |label 2|

|label      1|
        |label      2|

gurindersm wrote:

Any ideas what wrong i am doing or if i am missing any step.