wxPostEvent Segmentation Fault when not in wxThread Entry() method

[AzureBell]

I want to post a simple event to my MainFrame (to a TextCtrl) from my worker
thread. When I do this from within the Entry() method in my thread all is
fine. But if I try to do it from another method then I get a segmentation
fault every time! Can anyone advise what the problem might be?

MY code is :

wxCommandEvent event(wxEVT_ME_EVENT);
event.SetString("Howdy\n");
wxPostEvent( m_MainWindow, event);

I have a pointer to m_MainWindow saved in my thread class.

Mark

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