Re: Color picker idea

[James Henstridge <james daa com au>]

Or you could use gdk_imlib.  Here is the function you would use:
  GdkImlibImage *gdk_imlib_create_image_from_drawable(GdkWindow *gwin,
               GdkBitmap * gmask, int x, int y, int width, int height);

You could use this on the root window, setting the x and y coordinates to
the mouse click, and set height, width to 1.  Then you can get the RGB
value out of the GdkImlibImage structure.

James Henstridge.

--
Email: james@daa.com.au
WWW:   http://www.daa.com.au/~james/


On Thu, 1 Apr 1999, Todd Graham Lewis wrote:

> On Wed, 31 Mar 1999, Ben Frantzdale wrote:
> 
> > I'd think it'd be nice if there were an option in the Gnome color picker
> > that worked like the eye-dropperin GIMP or PhotoShop. You could cick a
> > "select color from the screen" and then click anywhere to send that
> > pixel's color to the color picker. It'd be usefull if you are trying to
> > have some gnome colors match some non gnome (ie E) colors.
> 
> I was thinking about this tonight.  I think that a really easy way to
> do this would be to steal code from xmag; instead of grabbing a 100x100
> window, grab a 1x1 window and take the rgb from it.  The xmag code and
> a little elbow grease should be all that you need.  If I get a chance,
> then I will look into it, but if someone else wants to do this, then I
> (and others, apparently) would be appreciative.
> 
> --
> Todd Graham Lewis            32°49'N,83°36'W         (800) 719-4664, x22804
> ******Linux******         MindSpring Enterprises      tlewis@mindspring.net
> 
> "A pint of sweat will save a gallon of blood."          -- George S. Patton
> 
> 
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