Question

I have a CF 2.0 app with a PictureBox on a Form. I want to move the PictureBox with mouse move and I need to add Double Buffer to the form to avoid flickering.

How can I do this?

Thanks!

Answer 1

You don’t need the Form double-buffered, you need the PB to be. That’s not so easy to come by in CF. However, you could create your own control, PB is pretty simple. For example:

using System; using System.Drawing; using System.Windows.Forms;  public class MyPictureBox : Control {   private Image mImage;   public Image Image {     get { return mImage; }     set { mImage = value; Invalidate(); }   }   protected override void OnPaintBackground(PaintEventArgs pevent) {     // Do nothing   }   protected override void OnPaint(PaintEventArgs e) {     using (Bitmap bmp = new Bitmap(this.ClientSize.Width, this.ClientSize.Height)) {       using (Graphics bgr = Graphics.FromImage(bmp)) {         bgr.Clear(this.BackColor);         if (mImage != null) bgr.DrawImage(mImage, 0, 0);       }       e.Graphics.DrawImage(bmp, 0, 0);     }     base.OnPaint(e);   } } 

Hopefully, I didn’t use stuff that isn’t available in CF…