Squashed commit of the following:

    all non binary tree structs are gone (almost all)
    Use names from https://en.wikipedia.org/wiki/Graphical_widget
    toolkit andlabs/ui is isolated from being accessable
        all direct references to andlabs are removed
    working dropdown widgets
    add debugging more buttons and windows

1 files changed, 3 insertions, 4 deletions

diff --git a/toolkit/andlabs/demo.go b/toolkit/andlabs/demo.go
index 05451ea..1b097d7 100644
--- a/toolkit/andlabs/demo.go
+++ b/toolkit/andlabs/demo.go
@@ -14,9 +14,10 @@ func BlankWindow(w *ui.Window) *ui.Box {
 	return hbox
 }
 
-func DemoNumbersPage(w *ui.Window) *Toolkit {
-	var t Toolkit
+func (t *Toolkit) DemoNumbersPage() {
+	var w *ui.Window
 
+	w = t.uiWindow
 	t.uiBox = makeNumbersPage()
 	t.uiBox.SetPadded(true)
 	w.SetChild(t.uiBox)
@@ -27,8 +28,6 @@ func DemoNumbersPage(w *ui.Window) *Toolkit {
 		scs := spew.ConfigState{MaxDepth: 1}
 		scs.Dump(t)
 	}
-
-	return &t
 }
 
 /*