(svn r1121) -Feature: Added sticky windows feature. A small pin allows the user to set the window as undeletable and can only be closed by hand. As an example the viewport window has been stickied (thanks to Neko-San)

-To use the feature add WDF_STICKY_BUTTON to the widget description and update all widget-ID's since sticky button will be widget 2.

main_gui.c

@@ -888,7 +888,7 @@ bool DoZoomInOutWindow(int how, Window *w)
 			break;
 		case WC_EXTRA_VIEW_PORT:
 			wt = FindWindowById(WC_EXTRA_VIEW_PORT, w->window_number);
-			button = 4;
+			button = 5;
 			break;
 		}