C#

// on every frame:
int stride = img_w * ((PixelFormats.Gray8.BitsPerPixel + 7) / 8);
bmpSource = BitmapSource.Create(img_w, img_h, 96, 96, PixelFormats.Gray8, null, my_arrb_8bit, stride);
            
this.Image1.Source = bmpSource;

// on every frame:
int max = PixelFormats.Rgb24.BitsPerPixel;
uint count = (uint)(img_w * img_h * PixelFormats.Rgb24.BitsPerPixel / 8);
IntPtr section = CreateFileMapping(new IntPtr(-1), IntPtr.Zero, FileMapProtection.PageReadWrite, 0, count, null);
IntPtr map = MapViewOfFile(section, FileMapAccess.FileMapAllAccess, 0, 0, (UIntPtr)count);
 
System.Runtime.InteropServices.Marshal.Copy(my_arrb_24bit, 0, map, (int)count);
my_ibs = System.Windows.Interop.Imaging.CreateBitmapSourceFromMemorySection(
    section,
    (int)img_w,
    (int)img_h,
    PixelFormats.Rgb24,
    (int)(img_w * PixelFormats.Rgb24.BitsPerPixel / 8), 0) as System.Windows.Interop.InteropBitmap;
this.Image1.Source = my_ibs;

namespace mouseclick
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            listBox1.MouseClick += new MouseEventHandler(listBox1_MouseClick);
            listBox1.Items.Add("aaaaaaaaaaaa");
            listBox1.Items.Add("aaaaaaaaaaaa");
            listBox1.Items.Add("aaaaaaaaaaaa");
        }

        void listBox1_MouseClick(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                MessageBox.Show("Left Button"); // Works
            }
            if (e.Button == MouseButtons.Right)
            {
                MessageBox.Show("Right Button"); // Does not work  
            }
        }  
    }
}