Double Buffering UserControl in CF 2.0

[Guest]

How to implement flicker-free double-buffering on a user control? I am am
adding a control to a autoscrolling panel on my form. When I scroll with the
panel, the usercontrol is not drawn smoothly. Are there any techniques that
can be applied to remedy this?

I have alreday tried the following:

protected override void OnPaint(PaintEventArgs e)
{
Graphics gxOff = null;
Bitmap m_bmpOffscreen = null;

if (m_bmpOffscreen == null)
m_bmpOffscreen = new Bitmap(ClientSize.Width,
ClientSize.Height);

//e.ClipRectangle.IntersectsWith

gxOff = Graphics.FromImage(m_bmpOffscreen);
gxOff.Clear(this.BackColor);

//Draw from the memory bitmap
e.Graphics.DrawImage(m_bmpOffscreen, e.ClipRectangle,
e.ClipRectangle, GraphicsUnit.Pixel);
//base.OnPaint(e);
gxOff.Dispose();
}

protected override void OnPaintBackground(PaintEventArgs e)
{
}

 

[Darren Shaffer]

the Signature control in the Smart Device Framework (www.opennetcf.org)
shows
an example of using double buffering in a custom control.
--
Darren Shaffer
..NET Compact Framework MVP
Principal Architect
Connected Innovation
www.connectedinnovation.com

 

[Chris Tacke, eMVP]

And the RoundGauge in the SDF actually shows a triple-buffered custom
control.

--
Chris Tacke
Co-founder
OpenNETCF.org
Are you using the SDF? Let's do a case study.
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