[Resolved]Graphics

[bugzpodder]

I basically have a Graphics object to a standard Windows Panel. but when it gets covered/minimized, the stuff I've drawn is disappeared. redrawing it is not an option. is there anyway I can take a snap-shot at the panel just before it gets minimized/covered so I can put the snapshot back using the Paint event?

[PorT_Alex]

You can make your drawing creating a bitmap in memory and draw the bit map in the paint event.


1 Create a bitmap object

m_objDrawingSurface= new Bitmap(640, 480,
System.Drawing.Imaging.PixelFormat.Format24bppRgb);

2 Put this object in the load event


3 Initialize your graphics object

objGraphics = Graphics.FromImage(m_objDrawingSurface);

4 objGraphics.Clear(SystemColors.Control);

5 draw on this object




Lastly on the paint event use the following

objGraphics = e.Graphics;
// Draw the contents of the bitmap on the form.
objGraphics.DrawImage(m_objDrawingSurface, 0,0,
m_objDrawingSurface.Width,
m_objDrawingSurface.Height);
objGraphics.Dispose();


Hope u get it :)