i am trying to copy pixels from the "this.EnvironmentParameters.SourceSurface" using the fallowing code but the resulting image does not contain any of the expected pixels ...
//nudHeight and nudWidth are numeric updown controls
// info.BlockImage is a "Image" type
//lbBlocks is a owner drawn listbox control so I can preview the block that was made
//imageSource is set to "this.EnvironmentParameters.SourceSurface"
private void button1_Click(object sender, EventArgs e)
{
InfoItem info = new InfoItem();
info.BlockImage = new Bitmap((int)this.nudWidth.Value, (int)this.nudHeight.Value, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(info.BlockImage);
for (int idy = 0; idy < this.imageSource.Height; idy++)
{
for (int idx = 0; idx < this.imageSource.Width; idx++)
{
ColorBgra col;
col = this.imageSource.GetPoint(idx, idy);
g.DrawLine(new Pen(Color.FromArgb(col.A, col.R, col.G, col.), idx, idy, idx, idy);
// g.DrawLine(new Pen(Color.FromArgb(Math.Abs(col.A - 255), col.R, col.G, col.), idx, idy, idx, idy);
}
}
g = null;
info.Name = "First block";
// this.blocks.Add(info);
this.lbBlocks.Items.Add(info);
}
... this is my first time trying to create a paint.net effect so bear with me. I am assuming that "this.EnvironmentParameters.SourceSurface" refers the the image. So my question really is how do I grab pixels or a rectangle of pixels and store them in a regular System.Drawing.Image obj?
