turn off OutputToWindow during dtor

Change-Id: I46d45c2487b7d4ac99d48ce0fc49bed120291f3c
Reviewed-on: https://gerrit.libreoffice.org/72668
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

include/svx/graphctl.hxx

@@ -261,6 +261,8 @@ public:
     {
     }
 
+    virtual ~SvxGraphCtrlView() override;
+
     // override these so we can get the occasions SdrPaintView would call Window::Invalidate on its vcl::Window
     // if it had one, and route to WidgetController::Invalidate instead
     virtual rtl::Reference<sdr::overlay::OverlayManager> CreateOverlayManager(OutputDevice& rDevice) const override;

svx/source/dialog/graphctl.cxx

@@ -1516,6 +1516,18 @@ void SvxGraphCtrlView::InvalidateOneWin(OutputDevice& rDevice, const tools::Rect
     SdrView::InvalidateOneWin(rDevice, rArea);
 }
 
+SvxGraphCtrlView::~SvxGraphCtrlView()
+{
+    // turn SetOutputToWindow back off again before
+    // turning back into our baseclass during dtoring
+    const sal_uInt32 nWindowCount(PaintWindowCount());
+    for (sal_uInt32 nWinNum(0); nWinNum < nWindowCount; nWinNum++)
+    {
+        SdrPaintWindow* pPaintWindow = GetPaintWindow(nWinNum);
+        pPaintWindow->SetOutputToWindow(false);
+    }
+}
+
 Point SvxGraphCtrl::GetPositionInDialog() const
 {
     int x, y, width, height;