Warning
gtk_icon_size_lookup_for_settings has been deprecated since version 3.10 and should not be used in newly-written code. Use gtk_icon_size_lookup() instead.
Obtains the pixel size of a semantic icon size, possibly
modified by user preferences for a particular
GtkSettings. Normally size would be
GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function
isn't normally needed, gtk_widget_render_icon_pixbuf() 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.
Since 2.2
Warning gtk_icon_size_lookup_for_settings has been deprecated since version 3.10 and should not be used in newly-written code. Use gtk_icon_size_lookup() instead. Obtains the pixel size of a semantic icon size, possibly modified by user preferences for a particular GtkSettings. Normally size would be GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function isn't normally needed, gtk_widget_render_icon_pixbuf() 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. Since 2.2