Re: Re: [gdk] How use gdk-pixbuf...

[Michal Porzuczek <mporzuczek gmail com>]

> GdkPixmap *pixmap;
> GdkPixbuf   *pixbuf;
> GdkGC *gc;
> pixbuf = ....
> pixmap = gdk_pixbuf_new(NULL,
>                                           gdk_pixbuf_get_width(pixbuf),
>                                           gdk_pixbuf_get_height(pixbuf),
>                                           gdk_pixbuf_get_bits_per_sample(pixbuf));
> gc = gdk_gc_new(GDK_DRAWABLE(pixmap));
>
> gdk_draw_pixbuf(GDK_DRAWABLE(pixmap),
>                              gc,
>                              0, 0,
>                              0, 0,
>                              gdk_pixbuf_get_width(pixbuf),
>                              gdk_pixbuf_get_height(pixbuf),
>                              GDK_RGB_DITHER_NONE, /* Is it possible to use 24 bits */
>                              0, 0); /* And what is dither? */
> g_object_unref(G_OBJECT(pixbuf));
> /* draw */

if you're planning on working with Pixmaps I recommend doing the following:

GdkPixbuf *pixbuf;
GdkPixmap *pixmap;

pixbuf = ...
gdk_pixbuf_render_pixmap_and_mask( pixbuf, &pixmap, NULL, 1 );
gdk_pixbuf_unref( pixbuf );

this will get you your pixmap from the pixbuf.

The commands I gave you is if you plan on making drawables straight
from the pixbuf.

As for the GDK_RGB_DITHER and what dither is, I'm not too sure. I only
started using GTK like a 2 weeks ago or so.

And why GdkPixbuf isn't a drawable I'm not too sure either.

I hope that helps,

Michal