Added the init and testing main functions and started fixing errors. Let's fix the rest and hope it works...

init.go

@@ -0,0 +1,17 @@
+// 11 february 2014
+//package ui
+package main
+
+// TODO this will be system-defined
+func initpanic(err error) {
+	panic("failure during init: " + err.Error())
+}
+
+func init() {
+	initDone := make(chan error)
+	go ui(initDone)
+	err := <-initDone
+	if err != nil {
+		initpanic(err)
+	}
+}

init_windows.go

@@ -69,7 +69,7 @@ func doWindowsInit() (err error) {
 	}
 	err = registerStdWndClass()
 	if err != nil {
-		reteurn fmt.Errorf("error registering standard window class: %v", err)
+		return fmt.Errorf("error registering standard window class: %v", err)
 	}
 	// TODO others
 	return nil		// all ready to go

main.go

@@ -0,0 +1,11 @@
+// 11 february 2014
+package main
+
+func main() {
+	w := NewWindow("Main Window")
+	w.Closing = make(chan struct{})
+	w.Open()
+	<-w.Closing
+	w.Close()
+}
+

main_windows.go

@@ -1,6 +1,8 @@
 // 7 february 2014
 package main
 
+//+build skip
+
 import (
 	"fmt"
 	"os"

stdwndclass_windows.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"syscall"
 	"unsafe"
-	"sync"
 )
 
 const (
@@ -34,7 +33,7 @@ func stdWndProc(hwnd _HWND, uMsg uint32, wParam _WPARAM, lParam _LPARAM) _LRESUL
 		return 0
 	case _WM_CLOSE:
 		if sysData.closing != nil {
-			sysData.closing <- struct{}
+			sysData.closing <- struct{}{}
 		}
 		return 0
 	default:

sysdata.go

@@ -19,7 +19,7 @@ func (c *cSysData) make() error {
 func (c *cSysData) show() error {
 	panic(runtime.GOOS + " sysData does not define show()")
 }
-func (c *cSysData) show() error {
+func (c *cSysData) hide() error {
 	panic(runtime.GOOS + " sysData does not define hide()")
 }