Fixes for building wxOS2 shared with OpenWatcom.

[wxWidgets.git] / src / unix / utilsx11.cpp

diff --git a/src/unix/utilsx11.cpp b/src/unix/utilsx11.cpp
index 073a4eb0d4e1a874441fc778be81fa0439d51010..f0e7659695c16929f19e57706d1612545c97233a 100644 (file)
--- a/src/unix/utilsx11.cpp
+++ b/src/unix/utilsx11.cpp
@@ -1,20 +1,24 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        src/unix/utilsx11.cpp
 // Purpose:     Miscellaneous X11 functions
 /////////////////////////////////////////////////////////////////////////////
 // Name:        src/unix/utilsx11.cpp
 // Purpose:     Miscellaneous X11 functions

-// Author:      Mattia Barbon
+// Author:      Mattia Barbon, Vaclav Slavik, Robert Roebling

 // Modified by:
 // Created:     25.03.02
 // RCS-ID:      $Id$
 // Modified by:
 // Created:     25.03.02
 // RCS-ID:      $Id$

-// Copyright:   (c) wxWindows team
-// Licence:     wxWindows license
+// Copyright:   (c) wxWidgets team
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 #if defined(__WXX11__) || defined(__WXGTK__) || defined(__WXMOTIF__)
 
 /////////////////////////////////////////////////////////////////////////////
 
 #if defined(__WXX11__) || defined(__WXGTK__) || defined(__WXMOTIF__)
 

+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+

 #include "wx/unix/utilsx11.h"
 #include "wx/iconbndl.h"
 #include "wx/image.h"
 #include "wx/icon.h"
 #include "wx/unix/utilsx11.h"
 #include "wx/iconbndl.h"
 #include "wx/image.h"
 #include "wx/icon.h"

+#include "wx/log.h"

 
 #ifdef __VMS
 #pragma message disable nosimpint
 
 #ifdef __VMS
 #pragma message disable nosimpint


@@ -25,6 +29,77 @@
 #pragma message enable nosimpint
 #endif
 
 #pragma message enable nosimpint
 #endif
 

+#ifdef __WXGTK__
+#include <gdk/gdk.h>
+#include <gdk/gdkx.h>
+#endif
+
+// Various X11 Atoms used in this file:
+static Atom _NET_WM_ICON = 0;
+static Atom _NET_WM_STATE = 0;
+static Atom _NET_WM_STATE_FULLSCREEN = 0;
+static Atom _NET_WM_STATE_STAYS_ON_TOP = 0;
+static Atom _NET_WM_WINDOW_TYPE = 0;
+static Atom _NET_WM_WINDOW_TYPE_NORMAL = 0;
+static Atom _KDE_NET_WM_WINDOW_TYPE_OVERRIDE = 0;
+static Atom _WIN_LAYER = 0;
+static Atom KWIN_RUNNING = 0;
+#ifndef __WXGTK20__
+static Atom _NET_SUPPORTING_WM_CHECK = 0;
+static Atom _NET_SUPPORTED = 0;
+#endif
+
+#define wxMAKE_ATOM(name, display) \
+    if (name == 0) name = XInternAtom((display), #name, False)
+
+
+// X11 Window is an int type, so use the macro to suppress warnings when
+// converting to it
+#define WindowCast(w) (Window)(wxPtrToUInt(w))
+
+// Is the window mapped?
+static bool IsMapped(Display *display, Window window)
+{
+    XWindowAttributes attr;
+    XGetWindowAttributes(display, window, &attr);
+    return (attr.map_state != IsUnmapped);
+}
+
+
+
+// Suspends X11 errors. Used when we expect errors but they are not fatal
+// for us.
+extern "C"
+{
+    typedef int (*wxX11ErrorHandler)(Display *, XErrorEvent *);
+
+    static int wxX11ErrorsSuspender_handler(Display*, XErrorEvent*) { return 0; }
+}
+
+class wxX11ErrorsSuspender
+{
+public:
+    wxX11ErrorsSuspender(Display *d) : m_display(d)
+    {
+        m_old = XSetErrorHandler(wxX11ErrorsSuspender_handler);
+    }
+    ~wxX11ErrorsSuspender()
+    {
+        XFlush(m_display);
+        XSetErrorHandler(m_old);
+    }
+
+private:
+    Display *m_display;
+    wxX11ErrorHandler m_old;
+};
+
+
+
+// ----------------------------------------------------------------------------
+// Setting icons for window manager:
+// ----------------------------------------------------------------------------
+

 void wxSetIconsX11( WXDisplay* display, WXWindow window,
                     const wxIconBundle& ib )
 {
 void wxSetIconsX11( WXDisplay* display, WXWindow window,
                     const wxIconBundle& ib )
 {


@@ -36,12 +111,15 @@ void wxSetIconsX11( WXDisplay* display, WXWindow window,
         if( ib.m_icons[i].Ok() )
             size += 2 + ib.m_icons[i].GetWidth() * ib.m_icons[i].GetHeight();
 
         if( ib.m_icons[i].Ok() )
             size += 2 + ib.m_icons[i].GetWidth() * ib.m_icons[i].GetHeight();
 

-    Atom net_wm_icon = XInternAtom( (Display*)display, "_NET_WM_ICON", 0 );
+    wxMAKE_ATOM(_NET_WM_ICON, (Display*)display);

 
     if( size > 0 )
     {
 
     if( size > 0 )
     {

-        wxUint32* data = new wxUint32[size];
-        wxUint32* ptr = data;
+//       The code below is correct for 64-bit machines also.
+//       wxUint32* data = new wxUint32[size];
+//       wxUint32* ptr = data;
+        unsigned long* data = new unsigned long[size];
+        unsigned long* ptr = data;

 
         for( i = 0; i < max; ++i )
         {
 
         for( i = 0; i < max; ++i )
         {


@@ -85,8 +163,8 @@ void wxSetIconsX11( WXDisplay* display, WXWindow window,
         }
 
         XChangeProperty( (Display*)display,
         }
 
         XChangeProperty( (Display*)display,

-                         (Window)window,
-                         net_wm_icon,
+                         WindowCast(window),
+                         _NET_WM_ICON,

                          XA_CARDINAL, 32,
                          PropModeReplace,
                          (unsigned char*)data, size );
                          XA_CARDINAL, 32,
                          PropModeReplace,
                          (unsigned char*)data, size );


@@ -95,10 +173,642 @@ void wxSetIconsX11( WXDisplay* display, WXWindow window,
     else
     {
         XDeleteProperty( (Display*)display,
     else
     {
         XDeleteProperty( (Display*)display,

-                         (Window)window,
-                         net_wm_icon );
+                         WindowCast(window),
+                         _NET_WM_ICON );

     }
     }

+#endif // !wxUSE_NANOX
+}
+
+
+// ----------------------------------------------------------------------------
+// Fullscreen mode:
+// ----------------------------------------------------------------------------
+
+// NB: Setting fullscreen mode under X11 is a complicated matter. There was
+//     no standard way of doing it until recently. ICCCM doesn't know the
+//     concept of fullscreen windows and the only way to make a window
+//     fullscreen is to remove decorations, resize it to cover entire screen
+//     and set WIN_LAYER_ABOVE_DOCK.
+//
+//     This doesn't always work, though. Specifically, at least kwin from
+//     KDE 3 ignores the hint. The only way to make kwin accept our request
+//     is to emulate the way Qt does it. That is, unmap the window, set
+//     _NET_WM_WINDOW_TYPE to _KDE_NET_WM_WINDOW_TYPE_OVERRIDE (KDE extension),
+//     add _NET_WM_STATE_STAYS_ON_TOP (ditto) to _NET_WM_STATE and map
+//     the window again.
+//
+//     Version 1.2 of Window Manager Specification (aka wm-spec aka
+//     Extended Window Manager Hints) introduced _NET_WM_STATE_FULLSCREEN
+//     window state which provides cleanest and simplest possible way of
+//     making a window fullscreen. WM-spec is a de-facto standard adopted
+//     by GNOME and KDE folks, but _NET_WM_STATE_FULLSCREEN isn't yet widely
+//     supported. As of January 2003, only GNOME 2's default WM Metacity
+//     implements, KDE will support it from version 3.2. At toolkits level,
+//     GTK+ >= 2.1.2 uses it as the only method of making windows fullscreen
+//     (that's why wxGTK will *not* switch to using gtk_window_fullscreen
+//     unless it has better compatibility with older WMs).
+//
+//
+//     This is what wxWidgets does in wxSetFullScreenStateX11:
+//       1) if _NET_WM_STATE_FULLSCREEN is supported, use it
+//       2) otherwise try WM-specific hacks (KDE, IceWM)
+//       3) use _WIN_LAYER and hope that the WM will recognize it
+//     The code was tested with:
+//     twm, IceWM, WindowMaker, Metacity, kwin, sawfish, lesstif-mwm
+
+
+#define  WIN_LAYER_NORMAL       4
+#define  WIN_LAYER_ABOVE_DOCK  10
+
+static void wxWinHintsSetLayer(Display *display, Window rootWnd,
+                               Window window, int layer)
+{
+    wxX11ErrorsSuspender noerrors(display);
+
+    XEvent xev;
+
+    wxMAKE_ATOM( _WIN_LAYER, display );
+
+    if (IsMapped(display, window))
+    {
+        xev.type = ClientMessage;
+        xev.xclient.type = ClientMessage;
+        xev.xclient.window = window;
+        xev.xclient.message_type = _WIN_LAYER;
+        xev.xclient.format = 32;
+        xev.xclient.data.l[0] = (long)layer;
+        xev.xclient.data.l[1] = CurrentTime;
+
+        XSendEvent(display, rootWnd, False,
+                   SubstructureNotifyMask, (XEvent*) &xev);
+    }
+    else
+    {
+        long data[1];
+
+        data[0] = layer;
+        XChangeProperty(display, window,
+                        _WIN_LAYER, XA_CARDINAL, 32,
+                        PropModeReplace, (unsigned char *)data, 1);
+    }
+}
+
+
+
+#ifdef __WXGTK20__
+static bool wxQueryWMspecSupport(Display* WXUNUSED(display),
+                                 Window WXUNUSED(rootWnd),
+                                 Atom (feature))
+{
+    GdkAtom gatom = gdk_x11_xatom_to_atom(feature);
+    return gdk_net_wm_supports(gatom);
+}
+#else
+static bool wxQueryWMspecSupport(Display *display, Window rootWnd, Atom feature)
+{
+    wxMAKE_ATOM(_NET_SUPPORTING_WM_CHECK, display);
+    wxMAKE_ATOM(_NET_SUPPORTED, display);
+
+    // FIXME: We may want to cache these checks. Note that we can't simply
+    //        remember the results in global variable because the WM may go
+    //        away and be replaced by another one! One possible approach
+    //        would be invalidate the case every 15 seconds or so. Since this
+    //        code is currently only used by wxTopLevelWindow::ShowFullScreen,
+    //        it is not important that it is not optimized.
+    //
+    //        If the WM supports ICCCM (i.e. the root window has
+    //        _NET_SUPPORTING_WM_CHECK property that points to a WM-owned
+    //        window), we could watch for DestroyNotify event on the window
+    //        and invalidate our cache when the windows goes away (= WM
+    //        is replaced by another one). This is what GTK+ 2 does.
+    //        Let's do it only if it is needed, it requires changes to
+    //        the event loop.
+
+    Atom type;
+    Window *wins;
+    Atom *atoms;
+    int format;
+    unsigned long after;
+    unsigned long nwins, natoms;
+
+    // Is the WM ICCCM supporting?
+    XGetWindowProperty(display, rootWnd,
+                       _NET_SUPPORTING_WM_CHECK, 0, LONG_MAX,
+                       False, XA_WINDOW, &type, &format, &nwins,
+                       &after, (unsigned char **)&wins);
+    if ( type != XA_WINDOW || nwins <= 0 || wins[0] == None )
+       return false;
+    XFree(wins);
+
+    // Query for supported features:
+    XGetWindowProperty(display, rootWnd,
+                       _NET_SUPPORTED, 0, LONG_MAX,
+                       False, XA_ATOM, &type, &format, &natoms,
+                       &after, (unsigned char **)&atoms);
+    if ( type != XA_ATOM || atoms == NULL )
+        return false;
+
+    // Lookup the feature we want:
+    for (unsigned i = 0; i < natoms; i++)
+    {
+        if ( atoms[i] == feature )
+        {
+            XFree(atoms);
+            return true;
+        }
+    }
+    XFree(atoms);
+    return false;
+}

 #endif
 #endif

+
+
+#define _NET_WM_STATE_REMOVE        0
+#define _NET_WM_STATE_ADD           1
+
+static void wxWMspecSetState(Display *display, Window rootWnd,
+                             Window window, int operation, Atom state)
+{
+    wxMAKE_ATOM(_NET_WM_STATE, display);
+
+    if ( IsMapped(display, window) )
+    {
+        XEvent xev;
+        xev.type = ClientMessage;
+        xev.xclient.type = ClientMessage;
+        xev.xclient.serial = 0;
+        xev.xclient.send_event = True;
+        xev.xclient.display = display;
+        xev.xclient.window = window;
+        xev.xclient.message_type = _NET_WM_STATE;
+        xev.xclient.format = 32;
+        xev.xclient.data.l[0] = operation;
+        xev.xclient.data.l[1] = state;
+        xev.xclient.data.l[2] = None;
+
+        XSendEvent(display, rootWnd,
+                   False,
+                   SubstructureRedirectMask | SubstructureNotifyMask,
+                   &xev);
+    }
+    // FIXME - must modify _NET_WM_STATE property list if the window
+    //         wasn't mapped!

 }
 
 }
 

+static void wxWMspecSetFullscreen(Display *display, Window rootWnd,
+                                  Window window, bool fullscreen)
+{
+    wxMAKE_ATOM(_NET_WM_STATE_FULLSCREEN, display);
+    wxWMspecSetState(display, rootWnd,
+                     window,
+                     fullscreen ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE,
+                      _NET_WM_STATE_FULLSCREEN);
+}
+
+
+// Is the user running KDE's kwin window manager? At least kwin from KDE 3
+// sets KWIN_RUNNING property on the root window.
+static bool wxKwinRunning(Display *display, Window rootWnd)
+{
+    wxMAKE_ATOM(KWIN_RUNNING, display);
+
+    long *data;
+    Atom type;
+    int format;
+    unsigned long nitems, after;
+    if (XGetWindowProperty(display, rootWnd,
+                           KWIN_RUNNING, 0, 1, False, KWIN_RUNNING,
+                           &type, &format, &nitems, &after,
+                           (unsigned char**)&data) != Success)
+    {
+        return false;
+    }
+
+    bool retval = (type == KWIN_RUNNING &&
+                   nitems == 1 && data && data[0] == 1);
+    XFree(data);
+    return retval;
+}
+
+// KDE's kwin is Qt-centric so much than no normal method of fullscreen
+// mode will work with it. We have to carefully emulate the Qt way.
+static void wxSetKDEFullscreen(Display *display, Window rootWnd,
+                               Window w, bool fullscreen, wxRect *origRect)
+{
+    long data[2];
+    unsigned lng;
+
+    wxMAKE_ATOM(_NET_WM_WINDOW_TYPE, display);
+    wxMAKE_ATOM(_NET_WM_WINDOW_TYPE_NORMAL, display);
+    wxMAKE_ATOM(_KDE_NET_WM_WINDOW_TYPE_OVERRIDE, display);
+    wxMAKE_ATOM(_NET_WM_STATE_STAYS_ON_TOP, display);
+
+    if (fullscreen)
+    {
+        data[0] = _KDE_NET_WM_WINDOW_TYPE_OVERRIDE;
+        data[1] = _NET_WM_WINDOW_TYPE_NORMAL;
+        lng = 2;
+    }
+    else
+    {
+        data[0] = _NET_WM_WINDOW_TYPE_NORMAL;
+        data[1] = None;
+        lng = 1;
+    }
+
+    // it is necessary to unmap the window, otherwise kwin will ignore us:
+    XSync(display, False);
+
+    bool wasMapped = IsMapped(display, w);
+    if (wasMapped)
+    {
+        XUnmapWindow(display, w);
+        XSync(display, False);
+    }
+
+    XChangeProperty(display, w, _NET_WM_WINDOW_TYPE, XA_ATOM, 32,
+                    PropModeReplace, (unsigned char *) &data[0], lng);
+    XSync(display, False);
+
+    if (wasMapped)
+    {
+        XMapRaised(display, w);
+        XSync(display, False);
+    }
+
+    wxWMspecSetState(display, rootWnd, w,
+                     fullscreen ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE,
+                     _NET_WM_STATE_STAYS_ON_TOP);
+    XSync(display, False);
+
+    if (!fullscreen)
+    {
+        // NB: like many other WMs, kwin ignores the first request for a window
+        //     position change after the window was mapped. This additional
+        //     move+resize event will ensure that the window is restored in
+        //     exactly the same position as before it was made fullscreen
+        //     (because wxTopLevelWindow::ShowFullScreen will call SetSize, thus
+        //     setting the position for the second time).
+        XMoveResizeWindow(display, w,
+                          origRect->x, origRect->y,
+                          origRect->width, origRect->height);
+        XSync(display, False);
+    }
+}
+
+
+wxX11FullScreenMethod wxGetFullScreenMethodX11(WXDisplay* display,
+                                               WXWindow rootWindow)
+{
+    Window root = WindowCast(rootWindow);
+    Display *disp = (Display*)display;
+
+    // if WM supports _NET_WM_STATE_FULLSCREEN from wm-spec 1.2, use it:
+    wxMAKE_ATOM(_NET_WM_STATE_FULLSCREEN, disp);
+    if (wxQueryWMspecSupport(disp, root, _NET_WM_STATE_FULLSCREEN))
+    {
+        wxLogTrace(_T("fullscreen"),
+                   _T("detected _NET_WM_STATE_FULLSCREEN support"));
+        return wxX11_FS_WMSPEC;
+    }
+
+    // if the user is running KDE's kwin WM, use a legacy hack because
+    // kwin doesn't understand any other method:
+    if (wxKwinRunning(disp, root))
+    {
+        wxLogTrace(_T("fullscreen"), _T("detected kwin"));
+        return wxX11_FS_KDE;
+    }
+
+    // finally, fall back to ICCCM heuristic method:
+    wxLogTrace(_T("fullscreen"), _T("unknown WM, using _WIN_LAYER"));
+    return wxX11_FS_GENERIC;
+}
+
+
+void wxSetFullScreenStateX11(WXDisplay* display, WXWindow rootWindow,
+                             WXWindow window, bool show,
+                             wxRect *origRect,
+                             wxX11FullScreenMethod method)
+{
+    // NB: please see the comment under "Fullscreen mode:" title above
+    //     for implications of changing this code.
+
+    Window wnd = WindowCast(window);
+    Window root = WindowCast(rootWindow);
+    Display *disp = (Display*)display;
+
+    if (method == wxX11_FS_AUTODETECT)
+        method = wxGetFullScreenMethodX11(display, rootWindow);
+
+    switch (method)
+    {
+        case wxX11_FS_WMSPEC:
+            wxWMspecSetFullscreen(disp, root, wnd, show);
+            break;
+        case wxX11_FS_KDE:
+            wxSetKDEFullscreen(disp, root, wnd, show, origRect);
+            break;
+        default:
+            wxWinHintsSetLayer(disp, root, wnd,
+                               show ? WIN_LAYER_ABOVE_DOCK : WIN_LAYER_NORMAL);
+            break;
+    }
+}
+
+
+
+// ----------------------------------------------------------------------------
+// keycode translations
+// ----------------------------------------------------------------------------
+
+#include <X11/keysym.h>
+
+// FIXME what about tables??
+
+int wxCharCodeXToWX(KeySym keySym)
+{
+    int id;
+    switch (keySym)
+    {
+        case XK_Shift_L:
+        case XK_Shift_R:
+            id = WXK_SHIFT; break;
+        case XK_Control_L:
+        case XK_Control_R:
+            id = WXK_CONTROL; break;
+        case XK_Meta_L:
+        case XK_Meta_R:
+            id = WXK_ALT; break;
+        case XK_BackSpace:
+            id = WXK_BACK; break;
+        case XK_Delete:
+            id = WXK_DELETE; break;
+        case XK_Clear:
+            id = WXK_CLEAR; break;
+        case XK_Tab:
+            id = WXK_TAB; break;
+        case XK_numbersign:
+            id = '#'; break;
+        case XK_Return:
+            id = WXK_RETURN; break;
+        case XK_Escape:
+            id = WXK_ESCAPE; break;
+        case XK_Pause:
+        case XK_Break:
+            id = WXK_PAUSE; break;
+        case XK_Num_Lock:
+            id = WXK_NUMLOCK; break;
+        case XK_Scroll_Lock:
+            id = WXK_SCROLL; break;
+
+        case XK_Home:
+            id = WXK_HOME; break;
+        case XK_End:
+            id = WXK_END; break;
+        case XK_Left:
+            id = WXK_LEFT; break;
+        case XK_Right:
+            id = WXK_RIGHT; break;
+        case XK_Up:
+            id = WXK_UP; break;
+        case XK_Down:
+            id = WXK_DOWN; break;
+        case XK_Next:
+            id = WXK_NEXT; break;
+        case XK_Prior:
+            id = WXK_PRIOR; break;
+        case XK_Menu:
+            id = WXK_MENU; break;
+        case XK_Select:
+            id = WXK_SELECT; break;
+        case XK_Cancel:
+            id = WXK_CANCEL; break;
+        case XK_Print:
+            id = WXK_PRINT; break;
+        case XK_Execute:
+            id = WXK_EXECUTE; break;
+        case XK_Insert:
+            id = WXK_INSERT; break;
+        case XK_Help:
+            id = WXK_HELP; break;
+
+        case XK_KP_Multiply:
+            id = WXK_MULTIPLY; break;
+        case XK_KP_Add:
+            id = WXK_ADD; break;
+        case XK_KP_Subtract:
+            id = WXK_SUBTRACT; break;
+        case XK_KP_Divide:
+            id = WXK_DIVIDE; break;
+        case XK_KP_Decimal:
+            id = WXK_DECIMAL; break;
+        case XK_KP_Equal:
+            id = '='; break;
+        case XK_KP_Space:
+            id = ' '; break;
+        case XK_KP_Tab:
+            id = WXK_TAB; break;
+        case XK_KP_Enter:
+            id = WXK_RETURN; break;
+        case XK_KP_0:
+            id = WXK_NUMPAD0; break;
+        case XK_KP_1:
+            id = WXK_NUMPAD1; break;
+        case XK_KP_2:
+            id = WXK_NUMPAD2; break;
+        case XK_KP_3:
+            id = WXK_NUMPAD3; break;
+        case XK_KP_4:
+            id = WXK_NUMPAD4; break;
+        case XK_KP_5:
+            id = WXK_NUMPAD5; break;
+        case XK_KP_6:
+            id = WXK_NUMPAD6; break;
+        case XK_KP_7:
+            id = WXK_NUMPAD7; break;
+        case XK_KP_8:
+            id = WXK_NUMPAD8; break;
+        case XK_KP_9:
+            id = WXK_NUMPAD9; break;
+        case XK_F1:
+            id = WXK_F1; break;
+        case XK_F2:
+            id = WXK_F2; break;
+        case XK_F3:
+            id = WXK_F3; break;
+        case XK_F4:
+            id = WXK_F4; break;
+        case XK_F5:
+            id = WXK_F5; break;
+        case XK_F6:
+            id = WXK_F6; break;
+        case XK_F7:
+            id = WXK_F7; break;
+        case XK_F8:
+            id = WXK_F8; break;
+        case XK_F9:
+            id = WXK_F9; break;
+        case XK_F10:
+            id = WXK_F10; break;
+        case XK_F11:
+            id = WXK_F11; break;
+        case XK_F12:
+            id = WXK_F12; break;
+        case XK_F13:
+            id = WXK_F13; break;
+        case XK_F14:
+            id = WXK_F14; break;
+        case XK_F15:
+            id = WXK_F15; break;
+        case XK_F16:
+            id = WXK_F16; break;
+        case XK_F17:
+            id = WXK_F17; break;
+        case XK_F18:
+            id = WXK_F18; break;
+        case XK_F19:
+            id = WXK_F19; break;
+        case XK_F20:
+            id = WXK_F20; break;
+        case XK_F21:
+            id = WXK_F21; break;
+        case XK_F22:
+            id = WXK_F22; break;
+        case XK_F23:
+            id = WXK_F23; break;
+        case XK_F24:
+            id = WXK_F24; break;
+        default:
+            id = (keySym <= 255) ? (int)keySym : -1;
+    }
+
+    return id;
+}
+
+KeySym wxCharCodeWXToX(int id)
+{
+    KeySym keySym;
+
+    switch (id)
+    {
+        case WXK_CANCEL:        keySym = XK_Cancel; break;
+        case WXK_BACK:          keySym = XK_BackSpace; break;
+        case WXK_TAB:           keySym = XK_Tab; break;
+        case WXK_CLEAR:         keySym = XK_Clear; break;
+        case WXK_RETURN:        keySym = XK_Return; break;
+        case WXK_SHIFT:         keySym = XK_Shift_L; break;
+        case WXK_CONTROL:       keySym = XK_Control_L; break;
+        case WXK_ALT:           keySym = XK_Meta_L; break;
+        case WXK_MENU :         keySym = XK_Menu; break;
+        case WXK_PAUSE:         keySym = XK_Pause; break;
+        case WXK_ESCAPE:        keySym = XK_Escape; break;
+        case WXK_SPACE:         keySym = ' '; break;
+        case WXK_PRIOR:         keySym = XK_Prior; break;
+        case WXK_NEXT :         keySym = XK_Next; break;
+        case WXK_END:           keySym = XK_End; break;
+        case WXK_HOME :         keySym = XK_Home; break;
+        case WXK_LEFT :         keySym = XK_Left; break;
+        case WXK_UP:            keySym = XK_Up; break;
+        case WXK_RIGHT:         keySym = XK_Right; break;
+        case WXK_DOWN :         keySym = XK_Down; break;
+        case WXK_SELECT:        keySym = XK_Select; break;
+        case WXK_PRINT:         keySym = XK_Print; break;
+        case WXK_EXECUTE:       keySym = XK_Execute; break;
+        case WXK_INSERT:        keySym = XK_Insert; break;
+        case WXK_DELETE:        keySym = XK_Delete; break;
+        case WXK_HELP :         keySym = XK_Help; break;
+        case WXK_NUMPAD0:       keySym = XK_KP_0; break;
+        case WXK_NUMPAD1:       keySym = XK_KP_1; break;
+        case WXK_NUMPAD2:       keySym = XK_KP_2; break;
+        case WXK_NUMPAD3:       keySym = XK_KP_3; break;
+        case WXK_NUMPAD4:       keySym = XK_KP_4; break;
+        case WXK_NUMPAD5:       keySym = XK_KP_5; break;
+        case WXK_NUMPAD6:       keySym = XK_KP_6; break;
+        case WXK_NUMPAD7:       keySym = XK_KP_7; break;
+        case WXK_NUMPAD8:       keySym = XK_KP_8; break;
+        case WXK_NUMPAD9:       keySym = XK_KP_9; break;
+        case WXK_MULTIPLY:      keySym = XK_KP_Multiply; break;
+        case WXK_ADD:           keySym = XK_KP_Add; break;
+        case WXK_SUBTRACT:      keySym = XK_KP_Subtract; break;
+        case WXK_DECIMAL:       keySym = XK_KP_Decimal; break;
+        case WXK_DIVIDE:        keySym = XK_KP_Divide; break;
+        case WXK_F1:            keySym = XK_F1; break;
+        case WXK_F2:            keySym = XK_F2; break;
+        case WXK_F3:            keySym = XK_F3; break;
+        case WXK_F4:            keySym = XK_F4; break;
+        case WXK_F5:            keySym = XK_F5; break;
+        case WXK_F6:            keySym = XK_F6; break;
+        case WXK_F7:            keySym = XK_F7; break;
+        case WXK_F8:            keySym = XK_F8; break;
+        case WXK_F9:            keySym = XK_F9; break;
+        case WXK_F10:           keySym = XK_F10; break;
+        case WXK_F11:           keySym = XK_F11; break;
+        case WXK_F12:           keySym = XK_F12; break;
+        case WXK_F13:           keySym = XK_F13; break;
+        case WXK_F14:           keySym = XK_F14; break;
+        case WXK_F15:           keySym = XK_F15; break;
+        case WXK_F16:           keySym = XK_F16; break;
+        case WXK_F17:           keySym = XK_F17; break;
+        case WXK_F18:           keySym = XK_F18; break;
+        case WXK_F19:           keySym = XK_F19; break;
+        case WXK_F20:           keySym = XK_F20; break;
+        case WXK_F21:           keySym = XK_F21; break;
+        case WXK_F22:           keySym = XK_F22; break;
+        case WXK_F23:           keySym = XK_F23; break;
+        case WXK_F24:           keySym = XK_F24; break;
+        case WXK_NUMLOCK:       keySym = XK_Num_Lock; break;
+        case WXK_SCROLL:        keySym = XK_Scroll_Lock; break;
+        default:                keySym = id <= 255 ? (KeySym)id : 0;
+    }
+
+    return keySym;
+}
+
+
+// ----------------------------------------------------------------------------
+// check current state of a key
+// ----------------------------------------------------------------------------
+
+#include "wx/app.h"
+
+bool wxGetKeyState(wxKeyCode key)
+{
+    wxASSERT_MSG(key != WXK_LBUTTON && key != WXK_RBUTTON && key !=
+        WXK_MBUTTON, wxT("can't use wxGetKeyState() for mouse buttons"));
+
+#if defined(__WXX11__)
+    Display *pDisplay = (Display*) wxApp::GetDisplay();
+#elif defined(__WXGTK__)
+    Display *pDisplay = GDK_DISPLAY();
+#elif defined(__WXMOTIF__)
+    Display *pDisplay = (Display*) (wxTheApp ? wxTheApp->GetInitialDisplay() : NULL);
+#else
+#error  Add code to get the DISPLAY for this platform

 #endif
 #endif

+
+    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 // __WXX11__ || __WXGTK__ || __WXMOTIF__