Hi all,

I am experiencing a strange problem for the call setToolTip while
running my application on frmaework 2.0. I have found 2 messages on
google discussing the same issue but there are
no replys

It dumps saying something like
System.InvalidOperationException: Adding the tip to the native ToolTip
control did not succeed.
   at System.Windows.Forms.ToolTip.SetToolInfo(Control ctl, String
caption)
   at System.Windows.Forms.ToolTip.CreateRegion(Control ctl)
   at System.Windows.Forms.ToolTip.CreateAllRegions()
   at System.Windows.Forms.ToolTip.get_TopLevelControl()
   at System.Windows.Forms.ToolTip.CreateRegion(Control ctl)
   at System.Windows.Forms.ToolTip.HandleCreated(Object sender,
EventArgs eventargs)
   at System.Windows.Forms.Control.OnHandleCreated(EventArgs e)
   at System.Windows.Forms.Control.WmCreate(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Label.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)

The strange thing about this that it cannot be caught in the try catch
blocks.
Actually I have set the tooltip to most of the controls in my
application. It sets and displays it properly but somewhere in the
middle it dumps. The trace I am getting won't tell me exactly to which
tooltip it dumps so I am not able to figure out exactly.

Does anybody has found any solution for such problem

Thanks in advance

<sonali_reddy***@yahoo.com> wrote in message
Show quoteHide quoteI think a try-catch in your main method around Application.Run will
intercept it.

If you open the stack frame for
System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr
wparam, IntPtr lparam)
and look at hWnd, then open Spy++, you can find out what the HWND
corresponds to.  Likely it will be the tooltip control itself, so find out
what message (starting with TTM_) msg is.  Look that up on MSDN, and it will
explain what wparam and lparam mean.

Show quoteHide quote

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