Re: How does the "print screen" function work?

["hamb ka" <hamb_ msn com>]

Thanks, Evan...

As my application runs on a pda, the user won't be able to drag the window 
around, so pasting the screenshot as the background is pretty safe for me 
:-)
With reference to gnome-panel-screenshot source code, I used 
gdk_pixbuf_get_from_drawable combined with gdk_get_default_root_window and 
gdk_pixbuf_render_to_drawable (or gdk_draw_pixbuf).
Your idea of hacking is interesting, I will try it out next time....

Regards,

hamb


> From: Evan Martin <martine cs washington edu>
> To: hamb ka <hamb_ msn com>
> CC: gtk-app-devel-list gnome org
> Subject: Re: How does the "print screen" function work?
> Date: Tue, 20 May 2003 01:28:25 -0700
>
> On Tue, May 20, 2003 at 03:27:54PM +0900, hamb ka wrote:
> > I am writing an application which is supposed to have some kind of
> > transparent effect. So I am considering of using the screenshot as the
> > background of this application.
> > "print screen" needs gnome libraries, right? which one?
>
> Truly transparent windows are currently impossible with x.
> If you take a screenshot of the screen and then use it to fill your
> window, you won't be able to take future screenshots to update the
> background because your window is covering the spot you're trying to
> take a picture of.
>
> To get a pixbuf from the screen, use gdk_pixbuf_xlib_get_from_drawable():
> http://developer.gnome.org/doc/API/2.0/gdk-pixbuf/gdk-pixbuf-gdk-pixbuf-xlib-from-drawables.html
>
> I've written some more about the hacks related to transparency here:
>  - http://evan.livejournal.com/590245.html
> and wrote how I've managed to make a pseudo-transparent (but more real
> than transparent terminals) hack here:
>  - http://evan.livejournal.com/591456.html
>
> I didn't go much farther than that, though.
>
> --
>       Evan Martin
> martine cs washington edu
>   http://neugierig.org
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> gtk-app-devel-list gnome org
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