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                                Jan Goos 07.09.2008

                                  • When the CodeRush (7.04) Surface Designer Technology is enabled and the LookAndFeel is set to NativeStyle, adding a page to a TcxPageControl in design-time causes an access violation with the following stack trace:

                                    007b75ff +007 vcl70.bpl Graphics TCanvas.GetHandle
                                    0a986407 +003 cxLibraryVCLD7.bpl Cxgraphics TcxCanvas.GetHandle
                                    0a987cc4 +01c cxLibraryVCLD7.bpl Cxgraphics TcxCanvas.RestoreDC
                                    0a985ee4 +04c cxLibraryVCLD7.bpl Cxgraphics cxDrawTransparentControlBackground
                                    0a985f28 +034 cxLibraryVCLD7.bpl Cxgraphics cxDrawTransparentControlBackground
                                    0af46615 +039 cxPageControlVCLD7.bpl Cxpcpainters TcxPCTabsPainter.PrepareTabBitmapBackground
                                    0af464cb +0df cxPageControlVCLD7.bpl Cxpcpainters TcxPCTabsPainter.PrepareTabBackground
                                    0af4a667 +083 cxPageControlVCLD7.bpl Cxpcpainters TcxPCStandardPainter.PaintTab
                                    0af4636d +035 cxPageControlVCLD7.bpl Cxpcpainters TcxPCTabsPainter.PaintTabsRegion
                                    0af5b5f5 +01d cxPageControlVCLD7.bpl Cxpc TcxPCCustomPainter.InternalPaint
                                    0af5b90b +007 cxPageControlVCLD7.bpl Cxpc TcxPCCustomPainter.Paint
                                    0af4982d +009 cxPageControlVCLD7.bpl Cxpcpainters TcxPCStandardPainter.Paint
                                    0af45dd4 +000 cxPageControlVCLD7.bpl Cxpcpainters TcxPCTabsPainter.Paint
                                    0af5872a +03a cxPageControlVCLD7.bpl Cxpc TcxCustomTabControl.Paint
                                    008391bf +057 vcl70.bpl Controls TCustomControl.PaintWindow
                                    00834e2e +04e vcl70.bpl Controls TWinControl.PaintHandler
                                    0083535b +03f vcl70.bpl Controls TWinControl.WMPaint
                                    00839158 +010 vcl70.bpl Controls TCustomControl.WMPaint
                                    0a96d555 +011 cxLibraryVCLD7.bpl Cxcontrols TcxControl.WMPaint

                                    We updated from 6.35 today, which did not have this problem.

                                    Steps to Reproduce:

                                    - Create a new application

                                    - Add a TcxLookAndFeelController, set NativeStyle to True

                                    - Add a TcxPageControl

                                    - Add a New Page

                                    Actual Results:

                                    AV

                                0
                                Jan Goos 07.10.2008

                                I noticed we didn't fill in the OS correct, so I corrected it to: Windows XP

                                0
                                Serge (DevExpress Support) 07.18.2008

                                As we discovered, the problem was caused by a wrong code fix made for Bug Report B91407 ("TcxPageControl - Transparent areas are unexpectedly displayed within pages"). We'll update the fix for that report.

                                Regards,
                                Serge

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