Graphics Contexts: GTK+ 2 Reference Manual

Graphics Contexts

Graphics Contexts — A shared pool of GdkGC objects

Functions

GdkGC *	gtk_gc_get ()
void	gtk_gc_release ()

Includes

#include <gtk/gtk.h>

Description

These functions provide access to a shared pool of GdkGC objects. When a new GdkGC is needed, gtk_gc_get() is called with the required depth, colormap and GdkGCValues. If a GdkGC with the required properties already exists then that is returned. If not, a new GdkGC is created. When the GdkGC is no longer needed, gtk_gc_release() should be called.

Functions

gtk_gc_get ()

GdkGC *
gtk_gc_get (gint depth,
            GdkColormap *colormap,
            GdkGCValues *values,
            GdkGCValuesMask values_mask);

Gets a GdkGC with the given depth, colormap and GdkGCValues. If a GdkGC with the given properties already exists then it is returned, otherwise a new GdkGC is created. The returned GdkGC should be released with gtk_gc_release() when it is no longer needed.

Parameters

depth	the depth of the GdkGC to create.
colormap	the GdkColormap (FIXME: I don't know why this is needed).
values	a GdkGCValues struct containing settings for the GdkGC.
values_mask	a set of flags indicating which of the fields in `values` has been set.

Returns

a GdkGC.

gtk_gc_release ()

void
gtk_gc_release (GdkGC *gc);

Releases a GdkGC allocated using gtk_gc_get().

Parameters

a GdkGC.