Sets the icon size this icon source is intended to be used
with.
Setting the icon size on an icon source makes no difference
if the size is wildcarded. Therefore, you should usually
call gtk.icon_source.IconSource.setSizeWildcarded to un-wildcard it
in addition to calling this function.
Sets the icon size this icon source is intended to be used with.
Setting the icon size on an icon source makes no difference if the size is wildcarded. Therefore, you should usually call gtk.icon_source.IconSource.setSizeWildcarded to un-wildcard it in addition to calling this function.