Merges into props all the style information contained in props_to_merge. If replace is true, the values will be overwritten, if it is false, the older values will prevail.
a second #GtkStyleProperties
whether to replace values or not
Deprecated: #GtkStyleProperties are deprecated.
Merges into props all the style information contained in props_to_merge. If replace is true, the values will be overwritten, if it is false, the older values will prevail.