DEMO: work on a toolkit demo

Signed-off-by: Jeff Carr <jcarr@wit.com>

window-demo-andlabs-ui.go

@@ -4,11 +4,11 @@ import "log"
 import "github.com/andlabs/ui"
 import _ "github.com/andlabs/ui/winmanifest"
 
-func ToolkitDemoWindow() {
+func AndlabsUiDemoWindow() {
 	var w *Node
 	log.Println("ToolkitDemoWindow() START")
 
-	Config.Title = "Demo the GUI Toolkit"
+	Config.Title = "Demo andlabs/ui Toolkit"
 	Config.Width = 640
 	Config.Height = 480
 	Config.Exit = StandardClose

window-toolkit-demo.go

@@ -0,0 +1,31 @@
+package gui
+
+import "log"
+import "time"
+
+func NewStandardWindow(title string) *Node {
+	log.Println("NewStandardWindow() creating", title)
+
+	Config.Title = title
+	Config.Width = 640
+	Config.Height = 480
+	Config.Exit = StandardClose
+	return NewWindow()
+}
+func ToolkitDemoWindow() {
+	var w, t, g *Node
+
+	w = NewStandardWindow("Demo the GUI Toolkit")
+
+	// w.DemoAndlabsUiTab("ran AddDemoAndlabsUiTab()")
+	t = w.AddTab("Set time delay", nil)
+	g = t.AddGroup("nanoseconds")
+
+	s := g.NewSlider("t", 2, 80)
+	s.OnChanged = func (td *Node) {
+		t :=  time.Duration(s.Int())
+		log.Println("ToolkitDemoWindow() OnChanged() delay =", t);
+	}
+
+	log.Println("ToolkitDemoWindow() END")
+}