at org.eclipse.swt.internal.gtk.OS._gtk_widget_realize(OS.java:-2)
at org.eclipse.swt.internal.gtk.OS.gtk_widget_realize(OS.java:14842)
at org.eclipse.swt.widgets.Widget.gtk_widget_get_window(Widget.java:1800)
at org.eclipse.swt.widgets.Composite.gtk_style_set(Composite.java:875)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2012)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:5819)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:5490)
at org.eclipse.swt.internal.gtk.OS._gtk_widget_realize(OS.java:-2)