Disable mouse wheel scroll on Panel

Question

Hello,

I have a PictureBox in a Panel, and I use the mouse wheel to zoom and rotate the PictureBox image. I want to disable the mouse wheel scroll on the panel and scroll it only by clicking the vertical and horisontal Scroll. Your help is valued.

thanks in advance.

- Visual Basic 2010 Express

Answer 1

you need to disable/bypass the mouse event

            if (e.Delta > 0) 
            {return;}

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Mark Answered, if it solves your question and Vote if you found it helpful.
Rohit Arora

Answer 2

you need to disable/bypass the mouse event

Thank you, but I am using the e.Delta to rotate and zoom the pictureBox image.

when the user move the mouse over the I call the pictureBox.Select(), he can press the Shift key to zoom and the Alt key to rotate

If altKeyPressed Then cardRotation += e.Delta / 260.0F
If shiftKeyPressed Then cardZoom += e.Delta / 8000.0F
PictureBox.Invalidate()

what I need is to use the mouse wheel if the altKeyPressed = True  or shiftKeyPressed = True 

Answer 3

Hi simlai,

You can override OnMouseWheel by create a custom Panel control.

public class MyPanel : Panel
{
    protected override void OnMouseWheel(MouseEventArgs e)
    {

        if (((Control.ModifierKeys & Keys.Alt) != Keys.Alt) && ((Control.ModifierKeys & Keys.Shift) != Keys.Shift))
        {
            ((HandledMouseEventArgs)e).Handled = true;
        }
        else
        {
            // do other staff
        }
    }
}

Best Regards,

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Bob Wu
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