Graphics Contexts

Graphics Contexts — A shared pool of GdkGC objects

Synopsis


#include <gtk/gtk.h>


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

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.

Details

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.

`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().

gc : a GdkGC.