From Stewart Andreason, "When I open the Window Attributes (in WindowManager in X on linux) I am unable to save any changes to the attributes in the resource database, because the osg window does not have a class defined. The Window Specification and Save buttons are greyed out.

For example, when running FlightGear, I want the window to always have no title, so it opens full-screen without using the --full-screen option, which would prevent other windows from moving above the osg window.

I am attaching a patch I made to fix this problem."

src/osgViewer/GraphicsWindowX11.cpp

@@ -859,6 +859,12 @@ bool GraphicsWindowX11::createWindow()
     }
 
 
+    // Give window a class so that user preferences can be saved in the resource database.
+    XClassHint clH;
+    clH.res_name = (char *)"OSG";
+    clH.res_class = (char *)"osgViewer";
+    XSetClassHint( _display, _window, &clH);
+
     // This positions the window at _windowX, _windowY
     XSizeHints sh;
     sh.flags = 0;