private void PrepareBuffer()
{
ClearBuffer();
_image = new Bitmap(_size.Width, _size.Height, PixelFormat.Format16bppRgb565);
_graphics = Graphics.FromImage(_image);
_drawingGraphics = DrawingGraphics.FromGraphicsAndRect(_graphics, _image,
new Rectangle(0, 0, _image.Width, _image.Height));
}
private void ClearBuffer()
{
if (_graphics != null)
{
_graphics.Dispose();
_graphics = null;
}
if (_image != null)
{
_image.Dispose();
_image = null;
}
_drawingGraphics = null;
}
public static DrawingGraphics FromPaintEventArgs(PaintEventArgs e, Image canvasImage)
{
return(DrawingGraphics.FromGraphicsAndRect(e.Graphics, canvasImage, e.ClipRectangle));
}
