GTK+ Reference Manual
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Graphics Contexts

Name

Graphics Contexts — provides access to 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() is 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.



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