>You can read my post:
>http://yousfi.over-blog.com/2016/05/a-cool-desktop-zones-captures.html
>can capture any adjustable zone of desktop with gdiplusX library and save in any format you prefer.
>it uses the standard format follow and without any fired dialog box.
>lcdest is the destination bitmap file choosed:
>

> loCapture.Save(m.lcdest,.imaging.imageformat.PNG)  &&capture as PNG bitmap
>or
> loCapture.Save(m.lcdest,.imaging.imageformat.jpeg)  &&capture as JPG bitmap
>
>or
> loCapture.Save(m.lcdest,.imaging.imageformat.BMP)  &&capture asBMP Bitmap
>
>or
> loCapture.Save(m.lcdest,.imaging.imageformat.GIF)  &&capture as GIF bitmap
>
>

>
>can find in my blog many other relative posts talking of your question (activate search)

thanks