Otherwise it doesn't know what to do with its child widget.
#include "gtkstack.h"
#include "gtklabel.h"
#include "gtkintl.h"
+#include "gtkbinlayout.h"
G_DEFINE_TYPE (GtkFileChooserErrorStack, gtk_file_chooser_error_stack, GTK_TYPE_WIDGET)
gtk_file_chooser_error_stack_class_init (GtkFileChooserErrorStackClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->finalize = gtk_file_chooser_error_stack_finalize;
+
+ gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
}
static void