Is there a way to create Graphics from BitmapData?

Question

I'm using BitmapData to perform various drawing on it. Now i'm looking to draw some text.
Because i would like to avoid the complexity of implementing the string fonts to pixels transformation I would like to use the available DrawString method on graphics object.

So I'm looking for a way to create a Graphic object working on a device that will be my BitmapData.

I saw there is a Graphics.FromHdc method available. But when i use it with the Scan0 of my BitmapData it throws a System.OutOfMemoryException.

Answer 1

Usually a BitmapData object is derived from an existing Bitmap like this:

Bitmap bmp = // insert some way to create your bitmap!
Rectangle rect = new Rectangle(Point.Empty, bmp.Size);

BitmapData BD =  bmp.LockBits(rect , ImageLockMode.ReadWrite,  bmp.PixelFormat);
//  
//  do your pixel stuff here
//
bmp.UnlockBits(BD);

using (Graphics G = Graphics.FromImage(bmp) )
{
    //
    // do your Graphics stuff here
    // 
}