Fix GTK Boolean annotation checkbox not appearing in gtk environments.

refs 2406

org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/annotation/labelprovider/EmulatedNativeCheckBoxLabelProvider.java

@@ -62,7 +62,7 @@ import org.fortiss.tooling.base.ui.annotation.view.IAnnotationViewPart;
  * @author diewald
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: 9FD4DCC024810D15D8579ED28EE19528
+ * @ConQAT.Rating YELLOW Hash: C51CAC791396333CE5D6A132F6109FF0
  */
 public class EmulatedNativeCheckBoxLabelProvider extends AnnotationLabelProvider {
 
@@ -182,7 +182,8 @@ public class EmulatedNativeCheckBoxLabelProvider extends AnnotationLabelProvider
 		// shell not being "visible". Opening a second Shell modifies some
 		// internal properties of the existing shell, such that the widgets
 		// become visible.
-		if(getBundle("org.eclipse.swt.gtk") != null) {
+		if(getBundle("org.eclipse.swt.gtk.linux.x86_64") != null ||
+				getBundle("org.eclipse.swt.gtk.linux.x86") != null) {
 			Shell shell2 = new Shell(control.getShell(), SWT.NO_TRIM);
 			shell2.open();
 			shell2.close();