Re: question on gdkpixbuf

[tomas]

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On Fri, Jan 19, 2007 at 07:46:01PM +0530, Sudharshan S wrote:
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> Hi everyone,
[...]
> the image is not persistent. Any idea as to  why this is happening?
> To draw the pixbuf, i use
> gdk_draw_pixbuf(GDK_DRAWABLE(drawing_area->window), NULL,
> GDK_PIXBUF(image_buffer), 0, 0, 0, 0, -1, -1, GDK_RGB_DITHER_NONE, 0, 0);

This is supposed to be that way :-)

To have a persistent image, you'll have to redraw on each expose event
(expose events tell you which area has to be redrawn). Or just use a
GtkImage widget[1], which is designed to do that for you.

Using a drawing area might be the right approach when you have special
drawing algorithms/strategies based on your own representation of
images.

[1] 

Regards
- -- tomás
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question on gdkpixbuf

[Sudharshan S]

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Hi everyone,
Novice programmer here. When i use gdkpixbuf, i find that the images
in the window in which the image is loaded, disappears when it is
moved or  when it comes under other onscreen elements. In other words,
the image is not persistent. Any idea as to  why this is happening?
To draw the pixbuf, i use
gdk_draw_pixbuf(GDK_DRAWABLE(drawing_area->window), NULL,
GDK_PIXBUF(image_buffer), 0, 0, 0, 0, -1, -1, GDK_RGB_DITHER_NONE, 0, 0);


regards
Sudharshan S
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