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                                Christoph Molenda 07.30.2007

                                  • Hello,
                                    Today I got an exception after clicking on a button which led to an error as following. After this error occurred the mentioned button was represented by a white rectangle with a red cross in it. The problem is that I cannot really reproduce it. Normally the application which contains this button works fine independent on which computer. Can you imagine what leads to this error?

                                    Type: System.NullReferenceException
                                    Message: Object reference not set to an instance of an object.
                                    Source: DevExpress.Utils.v6.3

                                    Method: DevExpress.Utils.Text.FontCache GetFontCacheByFont(System.Drawing.Graphics, System.Drawing.Font)
                                    Data:
                                    Callstack:
                                       at DevExpress.Utils.Text.FontsCache.GetFontCacheByFont(Graphics graphics, Font font)
                                       at DevExpress.Utils.Text.FontsCache.GetStringSize(Graphics graphics, String text, Font font, StringFormat stringFormat, Int32 maxWidth)
                                       at DevExpress.Utils.Text.TextUtils.GetStringSize(Graphics g, String text, Font font, StringFormat stringFormat, Int32 maxWidth)
                                       at DevExpress.Utils.Paint.XPaintMixed.CalcTextSize(Graphics g, String s, Font font, StringFormat strFormat, Int32 maxWidth)
                                       at DevExpress.Utils.AppearanceObject.CalcTextSize(Graphics g, StringFormat sf, String s, Int32 width)
                                       at DevExpress.Utils.AppearanceObject.CalcTextSize(Graphics g, String s, Int32 width)
                                       at DevExpress.XtraEditors.Drawing.EditorButtonPainter.CalcCaptionSize(EditorButtonObjectInfoArgs e)
                                       at DevExpress.XtraEditors.Drawing.EditorButtonPainter.DrawContent(ObjectInfoArgs e)
                                       at DevExpress.XtraEditors.Drawing.SkinEditorButtonPainter.DrawContent(ObjectInfoArgs e)
                                       at DevExpress.XtraEditors.Drawing.EditorButtonPainter.DrawObject(ObjectInfoArgs e)
                                       at DevExpress.XtraEditors.Drawing.SkinEditorButtonPainter.DrawObject(ObjectInfoArgs e)
                                       at DevExpress.XtraEditors.Drawing.BaseButtonPainter.DrawContent(ControlGraphicsInfoArgs info)
                                       at DevExpress.XtraEditors.Drawing.BaseControlPainter.Draw(ControlGraphicsInfoArgs info)
                                       at DevExpress.XtraEditors.BaseControl.OnPaint(PaintEventArgs e)
                                       at DevExpress.XtraEditors.BaseButton.OnPaint(PaintEventArgs e)
                                       at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
                                       at System.Windows.Forms.Control.WmPaint(Message& m)
                                       at System.Windows.Forms.Control.WndProc(Message& m)
                                       at DevExpress.Utils.Controls.ControlBase.WndProc(Message& m)
                                       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
                                       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
                                       at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

                                0
                                Stan (DevExpress Support) 07.31.2007

                                Hello Christoph,

                                Thank you for the report. However, unfortunately, I'm unable to reproduce this issue on my side using the latest version of our suites - 6.3.6. There is no any project attached. I can suppose that this problem is similar to the issue described in the following thread: RED CROSS OF DEATH. Please review it and check whether you are performing all operations correctly. If it doesn't help, please attach a sample project demonstrating the issue and describe the exact steps on how to reproduce it.

                                I'm awaiting your response.

                                Thanks,
                                Stan.

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