Re: How can I get the default X display depth?

[Federico Mena Quintero <federico ximian com>]

On Fri, 2006-09-01 at 19:32 +0800, simon.zheng wrote:

> I failed to get display depth by gdk_rgb_get_visual().
> 
> 1. I set my X display as depth 8.
> #xdypinfo | grep depth
> depth of root window:    8 planes
> 
> 2.Then, I create a new pixmap on 8-bit using the code,
> pixmap = gdk_pixmap_new (drawable, width, height,
> gdk_rgb_get_visual()->depth);
> 
> Strangely, I find the value returned by gdk_rgb_get_visual()->depth is
> always 24, NOT 8. I'm using gnome 2.6 and gtk+-2.4.9 on solaris. Who
> know how can I get correct default depth? 

You want to use gdk_screen_get_system_visual() and then visual->depth.

  Federico