Index: TGQt.cxx
===================================================================
--- TGQt.cxx	(revision 43748)
+++ TGQt.cxx	(working copy)
@@ -800,6 +800,7 @@
    assert(!fgTQt);
    fgTQt = this;
    gQt   = this;
+   gPtr2VirtualX = GetVirtualX;
    fSelectedWindow = fPrevWindow = NoOperation;
 }
 
@@ -814,6 +815,7 @@
    assert(!fgTQt);
    fgTQt = this;
    gQt   = this;
+   gPtr2VirtualX = GetVirtualX;
    fSelectedWindow = fPrevWindow = NoOperation;
    CreateQtApplicationImp();
    Init();