wxGetKeyState as per feature request :).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24854 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/utilsx11.cpp

@@ -77,6 +77,7 @@ public:
         XFlush(m_display);
         XSetErrorHandler(m_old);
     }
+
 private:
     Display *m_display;
     int (*m_old)(Display*, XErrorEvent *);
@@ -505,5 +506,27 @@ void wxSetFullScreenStateX11(WXDisplay* display, WXWindow rootWindow,
     }
 }
 
+bool wxGetKeyState(wxKeyCode key)
+{
+  Display *pDisplay = wxApp::GetDisplay();
+  int iKey = wxCharCodeWXToX(key);
+  int          iKeyMask = 0;
+  Window       wDummy1, wDummy2;
+  int          iDummy3, iDummy4, iDummy5, iDummy6;
+  unsigned int iMask;
+  XModifierKeymap* map = XGetModifierMapping(pDisplay);
+  KeyCode keyCode = XKeysymToKeycode(pDisplay,iKey);
+  if(keyCode == NoSymbol) return false;
+  for(int i = 0; i < 8; ++i) {
+    if( map->modifiermap[map->max_keypermod * i] == keyCode) {
+      iKeyMask = 1 << i;
+    }
+  }
+  XQueryPointer(pDisplay, DefaultRootWindow(pDisplay), &wDummy1, &wDummy2,
+                &iDummy3, &iDummy4, &iDummy5, &iDummy6, &iMask );
+  XFreeModifiermap(map);
+  return (iMask & iKeyMask) != 0;
+}
+
 #endif