c_gtk_drag_dest_set_proxy

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GtkWidget* widget, GdkWindow* proxyWindow, GdkDragProtocol protocol, gboolean useCoordinates) c_gtk_drag_dest_set_proxy;

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