Obtains the pixel size of a semantic icon size, possibly
modified by user preferences for the default GtkSettings.
(See gtk_icon_size_lookup_for_settings().)
Normally size would be
GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function
isn't normally needed, gtk_widget_render_icon() is the usual
way to get an icon for rendering, then just look at the size of
the rendered pixbuf. The rendered pixbuf may not even correspond to
the width/height returned by gtk_icon_size_lookup(), because themes
are free to render the pixbuf however they like, including changing
the usual size.
Obtains the pixel size of a semantic icon size, possibly modified by user preferences for the default GtkSettings. (See gtk_icon_size_lookup_for_settings().) Normally size would be GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function isn't normally needed, gtk_widget_render_icon() is the usual way to get an icon for rendering, then just look at the size of the rendered pixbuf. The rendered pixbuf may not even correspond to the width/height returned by gtk_icon_size_lookup(), because themes are free to render the pixbuf however they like, including changing the usual size.