Migrated controlsize_windows.go and stdwndclass_windows.go to the new API.

controlsize_windows.go

@@ -175,7 +175,6 @@ func releaseTextDC(hwnd _HWND, dc _HANDLE) {
 	}
 }
 
-// This function runs on uitask; call the functions directly.
 func (s *sysData) preferredSize(d *sysSizeData) (width int, height int) {
 	// the preferred size of an Area is its size
 	if stdDlgSizes[s.ctype].area {

stdwndclass_windows.go

@@ -116,7 +116,7 @@ func stdWndProc(hwnd _HWND, uMsg uint32, wParam _WPARAM, lParam _LPARAM) _LRESUL
 		switch ss.ctype {
 		case c_button:
 			if wParam.HIWORD() == _BN_CLICKED {
-				ss.signal()
+				ss.event()
 			}
 		case c_checkbox:
 			// we opt into doing this ourselves because http://blogs.msdn.com/b/oldnewthing/archive/2014/05/22/10527522.aspx
@@ -164,7 +164,11 @@ func stdWndProc(hwnd _HWND, uMsg uint32, wParam _WPARAM, lParam _LPARAM) _LRESUL
 		}
 		return 0
 	case _WM_CLOSE:
-		s.signal()
+		close := false		// TODO decide apt default
+		s.close(&close)
+		if close {
+			s.hide()
+		}
 		return 0
 	default:
 		return defWindowProc(hwnd, uMsg, wParam, lParam)