m_undoAccelerator = '\t' + wxAcceleratorEntry(wxACCEL_CTRL, 'Z').ToString();
m_redoAccelerator = '\t' + wxAcceleratorEntry(wxACCEL_CTRL, 'Y').ToString();
m_undoAccelerator = '\t' + wxAcceleratorEntry(wxACCEL_CTRL, 'Z').ToString();
m_redoAccelerator = '\t' + wxAcceleratorEntry(wxACCEL_CTRL, 'Y').ToString();