Fixed a major flaw in the GTK+ implementation I only realized now: by calling gtk_widget_show_all() in uiWindowShow(), we override the user's explicit hide settings! Fix it by calling gtk_widget_show() there (to only show the window), and gtk_widget_show_all() in both the new control constructor (to show the new control initially) and in the container constructor (to show that initially too).

new/TODO.md

@@ -7,6 +7,7 @@
 	- GWL(P)_ID
 - make sure all terminology is consistent
 - 32-bit Mac OS X support (requires lots of code changes)
+- add a test for hidden controls when a window is shown
 
 ultimately:
 - make everything vtable-based

new/container_unix.c

@@ -117,7 +117,12 @@ static void uiContainer_class_init(uiContainerClass *class)
 
 GtkWidget *newContainer(void)
 {
-	return GTK_WIDGET(g_object_new(uiContainerType, NULL));
+	GtkWidget *w;
+
+	w = GTK_WIDGET(g_object_new(uiContainerType, NULL));
+	// call gtk_widget_show_all() here to make the container visible
+	gtk_widget_show_all(w);
+	return w;
 }
 
 void updateParent(uintptr_t parent)

new/newcontrol_unix.c

@@ -221,6 +221,9 @@ uiControl *uiUnixNewControl(GType type, gboolean inScrolledWindow, gboolean scro
 	// and let's free everything with the immediate widget
 	g_signal_connect(s->immediate, "destroy", G_CALLBACK(onDestroy), c);
 
+	// finally, call gtk_widget_show_all() here to set the initial visibility of the widget
+	gtk_widget_show_all(s->immediate);
+
 	c->internal = s;
 	return c;
 }

new/window_unix.c

@@ -68,7 +68,8 @@ void uiWindowSetTitle(uiWindow *w, const char *title)
 
 void uiWindowShow(uiWindow *w)
 {
-	gtk_widget_show_all(w->widget);
+	// don't use gtk_widget_show_all(); that will override user hidden settings
+	gtk_widget_show(w->widget);
 }
 
 void uiWindowHide(uiWindow *w)