Gtk+ do 2 actions simultaneously

[Cabhan]

Howdy all. I'm writing a program using Gtk, and I'm trying to get 2 things to happen simultaneously.

My program traverses multiple images in a single directory, with the images inside of a Scrolled Window. When I change to a new image, I call this function:

void image_viewer_viewer_set_image(viewer *v, char *img_path)
{
    GtkWidget *image = v->image;

    gtk_image_set_from_file(GTK_IMAGE(image), img_path);
    reset_scrollbars(v);
}

reset_scrollbars() moves the scrollbars back to the upper-left position. The problem is that these two actions do appear simultaneously: you see the image jump back to the upper-left and then change.

I was wondering if there's any way to have both of these things appear simultaneously.

[munna_dude]

Howdy all. I'm writing a program using Gtk, and I'm trying to get 2 things to happen simultaneously.

My program traverses multiple images in a single directory, with the images inside of a Scrolled Window. When I change to a new image, I call this function:

void image_viewer_viewer_set_image(viewer *v, char *img_path)
{
    GtkWidget *image = v->image;

    gtk_image_set_from_file(GTK_IMAGE(image), img_path);
    reset_scrollbars(v);
}

reset_scrollbars() moves the scrollbars back to the upper-left position. The problem is that these two actions do appear simultaneously: you see the image jump back to the upper-left and then change.

I was wondering if there's any way to have both of these things appear simultaneously.

sorry i understood like this..
mean that just like online and offline(presence)??

[Cabhan]

I'm not sure I understand what you mean by online and offline(presence).

Also, I made a typo in my post: the actions currently do NOT happen simultaneously.

I think that this would involve some form of double-buffering: write both changes to the offscreen copy, and then replace the onscreen version. Unfortunately, I have no idea how to do that.