Rotated text patch from Hans-Joachim Baader (with some corrections)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4833 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/prntbase.cpp

@@ -780,10 +780,10 @@ void wxPrintPreviewBase::SetZoom(int percent)
         m_previewBitmap = NULL;
     }
 
-
     if (m_previewCanvas)
     {
         RenderPage(m_currentPage);
+        ((wxScrolledWindow *) m_previewCanvas)->Scroll(0, 0);
         m_previewCanvas->Clear();
         m_previewCanvas->Refresh();
     }