Sets the column with markup information for icon_view to be column. The markup column must be of type G_TYPE_STRING. If the markup column is set to something, it overrides the text column set by gtk_icon_view_set_text_column(). Since 2.6
A column in the currently used model, or -1 to display no text
See Implementation
Sets the column with markup information for icon_view to be column. The markup column must be of type G_TYPE_STRING. If the markup column is set to something, it overrides the text column set by gtk_icon_view_set_text_column(). Since 2.6