Source:
SourceLibrary.My.MyApplication
=IntPtr CallWindowProc(IntPtr, IntPtr, Int32, IntPtr, IntPtr)
Message:
Attempted to read or write protected memory. This is often an
indication that other memory is corrupt.
StackTrace:
at System.Windows.Forms.UnsafeNativeMethods.CallWindo wProc(IntPtr
wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.NativeWindow.DefWndProc(Messa ge& m)
at System.Windows.Forms.Control.DefWndProc(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.TreeView.WndProc(Message& m)
at
System.Windows.Forms.Control.ControlNativeWindow.O nMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message&
m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32
msg, IntPtr wparam, IntPtr lparam)
Claes Bergefall wrote:
"James Arnold" <ja****@gmail.comwrote in message
news:11**********************@e3g2000cwe.googlegro ups.com...
I am getting the following error message in my WinForms project:
---
An unhandled exception of type 'System.AccessViolationException'
occurred in System.Windows.Forms.dll
Additional information: Attempted to read or write protected memory.
This is often an indication that other memory is corrupt.
---
Do you get any callstack or any other useful information?
I have narrowed the problem down to a TreeView - if the user is
currently editing the label of a TreeNode (using node.BeginEdit) and I
then add a new node to the TreeView, the exception gets thrown.
Where/how are you adding the new node?
Can you reproduce the problem in a small program?
However - I cannot seem to programatically end the editing of the
TreeNode first (assuming that will stop the error). Can anyone direct
me to a solution please?
TreeNode.EndEdit perhaps
/claes
