Obtains the pixel size of a semantic icon size, possibly
modified by user preferences for a particular
gtk.Settings Normally size would be
GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function
isn’t normally needed, Widget.renderIconPixbuf 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 IconSize.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 a particular gtk.Settings Normally size would be GTK_ICON_SIZE_MENU, GTK_ICON_SIZE_BUTTON, etc. This function isn’t normally needed, Widget.renderIconPixbuf 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 IconSize.lookup, because themes are free to render the pixbuf however they like, including changing the usual size.