Program crashes on logoff but not regular closing

  • Thread starter Thread starter Luke
  • Start date Start date
L

Luke

I have a program that exits just fine when you close it manually, but
throws an unhandled exception when I try to log off windows. It
suggests I enable the JIT debugger, but when I compile the program in
debug mode and enable JIT debugging it closes fine, though the logoff
process is aborted. I am using a couple of activex controls that .net
generated wrappers for, so I don't know if that has anything to do
with it, but my program closes fine manually and afaik windows calls
the same event when its trying to close a program.

Thanks in advance,
Luke
 
* (e-mail address removed) (Luke) scripsit:
I have a program that exits just fine when you close it manually, but
throws an unhandled exception when I try to log off windows. It
suggests I enable the JIT debugger, but when I compile the program in
debug mode and enable JIT debugging it closes fine, though the logoff
Click to expand...

Post the complexe exception message.
 
I have a program that exits just fine when you close it manually, but
throws an unhandled exception when I try to log off windows. It
suggests I enable the JIT debugger, but when I compile the program in
debug mode and enable JIT debugging it closes fine, though the logoff
process is aborted. I am using a couple of activex controls that .net
generated wrappers for, so I don't know if that has anything to do
with it, but my program closes fine manually and afaik windows calls
the same event when its trying to close a program.

Thanks in advance,
Luke
Click to expand...

The text of the exception is:

System.NullReferenceException: Object reference not set to an instance
of an object.
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.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.AxHost.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)

I realize this is all very general but if someone could just point me
in the right direction I'd be grateful.
 
* (e-mail address removed) (Luke) scripsit:

Post the complexe exception message.
Click to expand...

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance
of an object.
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.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.AxHost.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)
 
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