Show/Hide a toolbar

[2sky]

Can anyone tell me how to hide or show a toolbar on the MainFrame window from another thread. When I do something like: frmMain->m_canvasToolBar.ShowWindow(SW_SHOW); the function returns FALSE. And when I try to use: frmMain->ShowControlBar(&frmMain->m_canvasToolBar, TRUE, FALSE); the application crashes deep down inside the MFC core.

[PJ Arends]

I would post a user defined message from the thread to the main frame. In the main frame, have a message handler that calls ShowControlBar(); --- It may be that your sole purpose in life is simply to serve as a warning to others.