Removed Ctrl/Cmd-X accelerator for closing program, as this clashes with modern standard

  expectations.

Closes #507.

Author: tturocy

ChangeLog

@@ -7,6 +7,10 @@
   terminal Nash profile correctly.  (#172)
 - Improved sizing of list of logit profiles computed for normal form games.
 
+### Changed
+- Removed Ctrl/Cmd-X accelerator for closing program, as this clashes with modern standard
+  expectations.  (#507)
+
 ### Removed
 - Undo and redo have been removed from the graphical interface.  (These were meant to be
   removed previously as they did not work properly and gave unpredictable behaviour.) (#505)

src/gui/gameframe.cc

@@ -250,10 +250,10 @@ gbtGameFrame::gbtGameFrame(wxWindow *p_parent, gbtGameDocument *p_doc)
   entries[2].Set(wxACCEL_CTRL | wxACCEL_SHIFT, (int)'s', wxID_SAVEAS);
   entries[3].Set(wxACCEL_CTRL, (int)'p', wxID_PRINT);
   entries[4].Set(wxACCEL_CTRL, (int)'w', wxID_CLOSE);
-  entries[5].Set(wxACCEL_CTRL, (int)'x', wxID_EXIT);
+  entries[5].Set(wxACCEL_CTRL, (int)'q', wxID_EXIT);
   entries[6].Set(wxACCEL_CTRL, (int)'+', GBT_MENU_VIEW_ZOOMIN);
   entries[7].Set(wxACCEL_CTRL, (int)'-', GBT_MENU_VIEW_ZOOMOUT);
-  wxAcceleratorTable accel(10, entries);
+  wxAcceleratorTable accel(8, entries);
   SetAcceleratorTable(accel);
 
   m_splitter = new wxSplitterWindow(this, wxID_ANY);