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--- a/src/qtgui/rclmain_w.cpp
+++ b/src/qtgui/rclmain_w.cpp
@@ -954,7 +954,7 @@
 void RclMain::showUIPrefs()
 {
     if (uiprefs == 0) {
-	uiprefs = new UIPrefsDialog(0);
+	uiprefs = new UIPrefsDialog(this);
 	connect(new QShortcut(quitKeySeq, uiprefs), SIGNAL (activated()), 
 		this, SLOT (fileExit()));
 	connect(uiprefs, SIGNAL(uiprefsDone()), this, SLOT(setUIPrefs()));
@@ -970,7 +970,7 @@
 void RclMain::showExtIdxDialog()
 {
     if (uiprefs == 0) {
-	uiprefs = new UIPrefsDialog(0);
+	uiprefs = new UIPrefsDialog(this);
 	connect(new QShortcut(quitKeySeq, uiprefs), SIGNAL (activated()), 
 		this, SLOT (fileExit()));
 	connect(uiprefs, SIGNAL(uiprefsDone()), this, SLOT(setUIPrefs()));
@@ -1822,3 +1822,8 @@
     }
     return false;
 }
+
+void RclMain::applyStyleSheet()
+{
+    ::applyStyleSheet(prefs.stylesheetFile);
+}