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.NET Forum / Languages / C# / March 2008Extract From Bitmap Band/Strip
Below I can Draw a portion of a Bitmap to a control what i would like to do is Save the Portion of a Bitmap strip to a new bitmap 32x32 Can anybody help with this Thanks private void pictureBox2_Paint(object sender, PaintEventArgs e) { Console.WriteLine(this.pictureBox1.Image.Height); Bitmap sourceImage = (Bitmap)this.pictureBox1.Image; //.Image; // Define The Part of Original bit map ive show to the form in a Picturebox //256 below points to the 7th picture in the source bitmap Rectangle sourceRectangle = new Rectangle(256,0,32,32); //define the rectangle where to draw on the control this picture box Rectangle destinationRectangle = new Rectangle(0, 0, 32, 32); // And this procedure draws it for us. Easy. OR IS IT? e.Graphics.DrawImage(sourceImage, destinationRectangle, sourceRectangle, GraphicsUnit.Pixel); //DrawFromStripBitmap(sourceImage, pictureBox3,3); } > Below I can Draw a portion of a Bitmap to a control > > what i would like to do is Save the Portion of a Bitmap > strip to a new bitmap 32x32 > Can anybody help with this I was helping with this, in a different thread that you'd started earlier. Why are you creating a new thread for the same question? As far as the code you posted goes, I don't understand why your source image is in a PictureBox in the first place, but assuming it is, then it's not appropriate to handle that PictureBox's Paint event for the purpose of copying a portion of one bitmap to another, nor is it appropriate to use the Graphics instance passed for the Paint event to do the copying. If you want to copy part of one bitmap into another, you need to use the Graphics.FromImage() method to get a Graphics instance that can be used to draw into the destination bitmap, and then call DrawImage() on that Graphics instance, passing the source bitmap to that method. It's highly unlikely that you would call that code in the context of handling a Paint event (though it's not at all uncommon that you might copy a portion of the source bitmap directly to the PaintEventArgs.Graphics instance in a Paint event...it just depends on how you're using the bitmap strip). Pete The Code I just posted was Test Code , just trying to get a portion of a bitmap on the screeen, ie trying to learn all the graphic stuff in net What i want to do is extract part of the original bitmap strip into a new bitmap.... i do appriciate your help thanks >> Below I can Draw a portion of a Bitmap to a control >> [quoted text clipped - 23 lines] > > Pete > [...] > What i want to do is extract part of the original bitmap strip into a new > bitmap.... My previous post includes an explanation as to how you might do that. If you have a specific question about that explanation, I'm happy to try to elaborate. But you'll have to ask that specific question. Pete I give up.... I just said , what i wanted to do...and i do not know how so therefore , there is no question, because i dont know what to ask >> [...] >> What i want to do is extract part of the original bitmap strip into a new [quoted text clipped - 5 lines] > > Pete > I give up.... > I just said , what i wanted to do...and i do not know how > so therefore , there is no question, because i dont know what to ask I know you said what you want to do. I already explained, in my previous post, how to do what you want to do. So, your original question has already been answered. Now, if you have a problem understanding that answer or otherwise being able to use it, that's fine. But you need to clearly state what problem it is you have. Otherwise, all that anyone can do is restate what I've already written. Obviously there's no point in doing that. Pete i'll figure it out somehow... thanks anyway >> I give up.... >> I just said , what i wanted to do...and i do not know how [quoted text clipped - 11 lines] > > Pete
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