Method GDK1.Window()->change_property()
- Method change_property
 GDK1.Windowchange_property(GDK1.Atomproperty,GDK1.Atomtype,intmode,stringdata)- Description
 mode is one of GDK_PROP_MODE_APPEND, GDK_PROP_MODE_PREPEND and GDK_PROP_MODE_REPLACE