DocumentManager关闭浮动窗体时抛异常

goodyu372

如图，这是被我拖拽出的一个浮动窗体，当我点击右上角x关闭按钮时，抛如下异常：




代码如下：


private void tabbedView1_DocumentClosing(object sender, DevExpress.XtraBars.Docking2010.Views.DocumentCancelEventArgs e)
        {
            //document.Control.Dispose();
            e.Document.Form.Close();
            this.documentManager1.View.Documents.Remove(e.Document);
        }




求助如何解决？  我在这段代码中加try catch不会捕捉到异常，按F10下一步就抛异常了。
另外，求教如何关闭浮动窗体？（我关闭非浮动窗体都正常）

感激不尽！！！！！2019好人一生平安！

goodyu372

devexpress的documentmanager如何关闭浮动窗体

goodyu372

SetWindowSubClass Failed   这是异常信息

堆栈如下：
   在 DevExpress.Utils.Drawing.Helpers.Win32SubclasserFactory.Win32Subclasser.AssignHandle()
   在 DevExpress.Utils.Drawing.Helpers.Win32SubclasserFactory.Create(IntPtr hWnd, WndProc wndProc)
   在 DevExpress.XtraBars.Docking2010.Views.BaseDocumentCollection.WM_CLOSE_Interceptor..ctor(IntPtr hWnd)
   在 DevExpress.XtraBars.Docking2010.Views.BaseDocumentCollection.OnSCClose(IntPtr hWnd)
   在 DevExpress.XtraBars.Docking2010.Views.BaseDocumentCollection.WM_SYSCOMMAND_Interceptor.WndProc(Message& m)
   在 DevExpress.Utils.Drawing.Helpers.Win32SubclasserFactory.Win32SubClassProcClosure.SubClassProc(IntPtr hWnd, IntPtr msg, IntPtr wParam, IntPtr lParam, IntPtr uIdSubclass, IntPtr dwRefData)
   在 DevExpress.Utils.Drawing.Helpers.Win32SubclasserFactory.Win32Subclasser.SubClassProcInner(IntPtr hWnd, IntPtr Msg, IntPtr wParam, IntPtr lParam, IntPtr uIdSubclass, IntPtr dwRefData)
   在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   在 WorkDevelop.Program.Main() 位置 D:\Git\WorkDevelop\WorkDevelop\Program.cs:行号 70

我确定不是我的程序代码出了问题，document_closing跟踪完在try catch里都不抛异常，下一步按f11/f10紧接着就抛异常了

goodyu372

求大侠赐教