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Thread ID:





60014 Apr 26,2007 11:27 AM UTC Dec 21,2007 12:20 PM UTC General Discussion 4
Tags: General Discussion
Raghavendra Bathal
Asked On April 26, 2007 11:27 AM UTC

We are using Syncfusion controls in our project.

But we are urgently facing an issue. Our application is throwing


This link gives us the idea about the bug: -


In our solution, we found that we are not using visual styles (Application.EnableVisualStyles())

But it is possible that Syncfusion might in turn may be making use of such a command.

Are you aware of any such issue with your components?

Please let us know, urgently.

A fatal error happened in


Exception type: System.Runtime.InteropServices.SEHException

Exception message:

External component has thrown an exception.

Exception stacktrace:

at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr

wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)

at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)

at System.Windows.Forms.Control.DefWndProc(Message& m)

at System.Windows.Forms.Control.WmUpdateUIState(Message& m)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at System.Windows.Forms.ContainerControl.WndProc(Message& m)

at System.Windows.Forms.ParkingWindow.WndProc(Message& m)

at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Raghavendra Bathal
Replied On April 26, 2007 11:40 AM UTC


here is how Syncfusion is being used:-

public ComboBoxAce()
this.Style = Syncfusion.Windows.Forms.VisualStyle.OfficeXP;

thanks and regards,

Poly J [Syncfusion]
Replied On May 2, 2007 02:02 PM UTC

Hi Raghavendra,

This issue has reported when using EnableVisualStyles().

The following thread in the Essential Tools forums discusses this issue:



Rohit Singh
Replied On December 14, 2007 04:37 PM UTC

Were you able to get a work around for this?
Plz help us, we are facing similar errors in our application.


Jisha Joy [Syncfusion]
Replied On December 21, 2007 12:20 PM UTC

Hi Rohit,

Thank you for posting query to us.

Using EnableVisualStyles and DoEvents will result in SEHException. Also, it will cause the same problem even if you do not use Syncfusion controls. Could you please upload us a minimal sample to reproduce the issue here?. This will help us to analyze the issue further.

Please let me know if you need further assistance.


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