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Hello,

I’m seeing the following error when I close a child mdi window that contains a textbox/combobox in Windows 7:

System.ComponentModel.Win32Exception: Error creating window handle.

   at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp)

   at System.Windows.Forms.Control.CreateHandle()

   at System.Windows.Forms.TextBoxBase.CreateHandle()

   at System.Windows.Forms.Control.get_Handle()

   at Elegant.Ui.TextBoxBasedControl.TextEditorContainerWndProc(Message& m)

   at Elegant.Ui.TextBoxBasedControl.TextBoxContainer.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)

Here are the relevant loaded assemblies:

mscorlib

    Assembly Version: 2.0.0.0

    Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)

    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

----------------------------------------

Elegant.Ui.Common

    Assembly Version: 3.1.0.0

    Win32 Version: 3.1.0.0

    CodeBase: file:///C:/Program%20Files/xxx/AR1000/Elegant.Ui.Common.DLL

----------------------------------------

Elegant.Ui.Ribbon

    Assembly Version: 3.1.0.0

    Win32 Version: 3.1.0.0

    CodeBase: file:///C:/Program%20Files/xxx/AR1000/Elegant.Ui.Ribbon.DLL

----------------------------------------

Elegant.Ui.Common.Theme.Office2007Blue

    Assembly Version: 3.1.0.0

    Win32 Version: 3.1.0.0

    CodeBase: file:///C:/Program%20Files/xxx/AR1000/Elegant.Ui.Common.Theme.Office2007Blue.DLL

----------------------------------------

Elegant.Ui.Ribbon.Theme.Office2007Blue

    Assembly Version: 3.1.0.0

    Win32 Version: 3.1.0.0

    CodeBase: file:///C:/Program%20Files/xxx/AR1000/Elegant.Ui.Ribbon.Theme.Office2007Blue.DLL

It works fine in XP and Vista on the same machine (different partitions).  I know .NET 2.0 is installed on the Win 7 partition

Any ideas?

Thanks

The windows handle limit for your application is 10,000 handles. You’re getting the error because your program is creating too many handles. You’ll need to find the memory leak. As other users have suggested, use a Memory Profiler.

Regards,
Peter

That’s it - thanks!

Thank you for the test project. We confirm that it was the case in v.3.1. However in version 3.4 it is fixed. Version 3.4 can be downloaded from our website.

I have sent you a test project - thanks!

Thank you for reporting the problem. Unfortunately we failed to reproduce it. Could you send us a test project?