Eliminate a warning

[wxWidgets.git] / src / msw / app.cpp

diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index 8a3a74a420e7dcc810b378d8d584987c35fae57a..ae797329c26f7916ba54a2ecf7440f068f90c90e 100644 (file)
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        app.cpp
+// Name:        src/msw/app.cpp

 // Purpose:     wxApp
 // Author:      Julian Smart
 // Modified by:
 // Purpose:     wxApp
 // Author:      Julian Smart
 // Modified by:


@@ -17,10 +17,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
 // headers
 // ---------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "app.h"
-#endif
-

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


@@ -29,6 +25,8 @@
 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

+    #include "wx/msw/wrapcctl.h"
+    #include "wx/dynarray.h"

     #include "wx/frame.h"
     #include "wx/app.h"
     #include "wx/utils.h"
     #include "wx/frame.h"
     #include "wx/app.h"
     #include "wx/utils.h"


@@ -42,28 +40,22 @@
     #include "wx/dialog.h"
     #include "wx/msgdlg.h"
     #include "wx/intl.h"
     #include "wx/dialog.h"
     #include "wx/msgdlg.h"
     #include "wx/intl.h"

-    #include "wx/dynarray.h"
-    #include "wx/wxchar.h"
-    #include "wx/icon.h"
+    #include "wx/crt.h"

     #include "wx/log.h"
     #include "wx/log.h"

+    #include "wx/module.h"

 #endif
 
 #include "wx/apptrait.h"
 #include "wx/filename.h"
 #endif
 
 #include "wx/apptrait.h"
 #include "wx/filename.h"

-#include "wx/module.h"
+#include "wx/dynlib.h"
+#include "wx/evtloop.h"
+#include "wx/thread.h"
+#include "wx/scopeguard.h"

 
 #include "wx/msw/private.h"
 
 #include "wx/msw/private.h"

-
-#if wxUSE_THREADS
-    #include "wx/thread.h"
-
-    // define the array of MSG strutures
-    WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
-
-    #include "wx/arrimpl.cpp"
-
-    WX_DEFINE_OBJARRAY(wxMsgArray);
-#endif // wxUSE_THREADS
+#include "wx/msw/dc.h"
+#include "wx/msw/ole/oleutils.h"
+#include "wx/msw/private/timer.h"

 
 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"
 
 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"


@@ -71,12 +63,17 @@
 
 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
 // compilers don't support it (missing headers, libs, ...)
 
 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
 // compilers don't support it (missing headers, libs, ...)

-#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) || defined(__SALFORDC__)
+#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__)

     #undef wxUSE_OLE
 
     #define  wxUSE_OLE 0
 #endif // broken compilers
 
     #undef wxUSE_OLE
 
     #define  wxUSE_OLE 0
 #endif // broken compilers
 

+#if defined(__POCKETPC__) || defined(__SMARTPHONE__)
+    #include <ole2.h>
+    #include <aygshell.h>
+#endif
+

 #if wxUSE_OLE
     #include <ole2.h>
 #endif
 #if wxUSE_OLE
     #include <ole2.h>
 #endif


@@ -84,59 +81,54 @@
 #include <string.h>
 #include <ctype.h>
 
 #include <string.h>
 #include <ctype.h>
 

-#if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
-    #include <commctrl.h>
-#endif
-
-// ----------------------------------------------------------------------------
-// conditional compilation
-// ----------------------------------------------------------------------------
+#include "wx/msw/missing.h"

 
 

-// The macro _WIN32_IE is defined by commctrl.h (unless it had already been
-// defined before) and shows us what common control features are available
-// during the compile time (it doesn't mean that they will be available during
-// the run-time, use GetComCtl32Version() to test for them!). The possible
-// values are:
+// instead of including <shlwapi.h> which is not part of the core SDK and not
+// shipped at all with other compilers, we always define the parts of it we
+// need here ourselves

 //
 //

-// 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
-// 0x0300                      4.70              IE 3.x
-// 0x0400                      4.71              IE 4.0
-// 0x0401                      4.72              IE 4.01 and Win98
-// 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
-
-#ifndef _WIN32_IE
-    // minimal set of features by default
-    #define _WIN32_IE 0x0200
-#endif
+// NB: DLLVER_PLATFORM_WINDOWS will be defined if shlwapi.h had been somehow
+//     included already
+#ifndef DLLVER_PLATFORM_WINDOWS
+    // hopefully we don't need to change packing as DWORDs should be already
+    // correctly aligned
+    struct DLLVERSIONINFO
+    {
+        DWORD cbSize;
+        DWORD dwMajorVersion;                   // Major version
+        DWORD dwMinorVersion;                   // Minor version
+        DWORD dwBuildNumber;                    // Build number
+        DWORD dwPlatformID;                     // DLLVER_PLATFORM_*
+    };

 
 

-#if _WIN32_IE >= 0x0300 && \
-    (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 )) && \
-    !defined(__CYGWIN__) && !defined(__WXWINCE__)
-    #include <shlwapi.h>
+    typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *);
+#endif // defined(DLLVERSIONINFO)
+
+#ifndef ATTACH_PARENT_PROCESS
+    #define ATTACH_PARENT_PROCESS ((DWORD)-1)

 #endif
 
 // ---------------------------------------------------------------------------
 // global variables
 // ---------------------------------------------------------------------------
 
 #endif
 
 // ---------------------------------------------------------------------------
 // global variables
 // ---------------------------------------------------------------------------
 

-extern wxList WXDLLEXPORT wxPendingDelete;
-

 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
 extern void wxSetKeyboardHook(bool doIt);
 #endif
 
 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
 extern void wxSetKeyboardHook(bool doIt);
 #endif
 

-MSG s_currentMsg;
-

 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 //     with NR suffix - wxWindow::MSWCreate() supposes this
 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 //     with NR suffix - wxWindow::MSWCreate() supposes this

-const wxChar *wxCanvasClassName        = wxT("wxWindowClass");
-const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
-const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
-const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
-const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
-const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
-
-HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
+#ifdef __WXWINCE__
+WXDLLIMPEXP_CORE       wxChar *wxCanvasClassName;
+WXDLLIMPEXP_CORE       wxChar *wxCanvasClassNameNR;
+#else
+WXDLLIMPEXP_CORE const wxChar *wxCanvasClassName = NULL;
+WXDLLIMPEXP_CORE const wxChar *wxCanvasClassNameNR = NULL;
+#endif
+WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassName = NULL;
+WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassNameNoRedraw = NULL;
+WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassName = NULL;
+WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassNameNoRedraw = NULL;

 
 // ----------------------------------------------------------------------------
 // private functions
 
 // ----------------------------------------------------------------------------
 // private functions


@@ -210,7 +202,7 @@ void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
 {
     wxEndBusyCursor();
 
 {
     wxEndBusyCursor();
 

-    const ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;
+    ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;

 
     delete data->wd;
 
 
     delete data->wd;
 


@@ -218,616 +210,640 @@ void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
     // the other windows reenabled, the activation is going to return to the
     // window which had had it before
     data->winActive->Destroy();
     // the other windows reenabled, the activation is going to return to the
     // window which had had it before
     data->winActive->Destroy();

+
+    // also delete the temporary data object itself
+    delete data;

 }
 
 bool wxGUIAppTraits::DoMessageFromThreadWait()
 {
 }
 
 bool wxGUIAppTraits::DoMessageFromThreadWait()
 {

-    return !wxTheApp || wxTheApp->DoMessage();
+    // we should return false only if the app should exit, i.e. only if
+    // Dispatch() determines that the main event loop should terminate
+    wxEventLoopBase * const evtLoop = wxEventLoop::GetActive();
+    if ( !evtLoop || !evtLoop->Pending() )
+    {
+        // no events means no quit event
+        return true;
+    }
+
+    return evtLoop->Dispatch();

 }
 
 }
 

-// ===========================================================================
-// wxApp implementation
-// ===========================================================================
+DWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread)
+{
+    // if we don't have a running event loop, we shouldn't wait for the
+    // messages as we never remove them from the message queue and so we enter
+    // an infinite loop as MsgWaitForMultipleObjects() keeps returning
+    // WAIT_OBJECT_0 + 1
+    if ( !wxEventLoop::GetActive() )
+        return DoSimpleWaitForThread(hThread);
+
+    return ::MsgWaitForMultipleObjects
+             (
+               1,                   // number of objects to wait for
+               (HANDLE *)&hThread,  // the objects
+               false,               // wait for any objects, not all
+               INFINITE,            // no timeout
+               QS_ALLINPUT |        // return as soon as there are any events
+               QS_ALLPOSTMESSAGE
+             );
+}

 
 

-int wxApp::m_nCmdShow = SW_SHOWNORMAL;
+wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const
+{
+    OSVERSIONINFO info;
+    wxZeroMemory(info);
+
+    // on Windows, the toolkit version is the same of the OS version
+    // as Windows integrates the OS kernel with the GUI toolkit.
+    info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+    if ( ::GetVersionEx(&info) )
+    {
+        if ( majVer )
+            *majVer = info.dwMajorVersion;
+        if ( minVer )
+            *minVer = info.dwMinorVersion;
+    }
+
+#if defined(__WXHANDHELD__) || defined(__WXWINCE__)
+    return wxPORT_WINCE;
+#else
+    return wxPORT_MSW;
+#endif
+}
+
+#if wxUSE_TIMER
+
+wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
+{
+    return new wxMSWTimerImpl(timer);
+}
+
+#endif // wxUSE_TIMER
+
+wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
+{
+    return new wxEventLoop;
+}

 
 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------

-// wxWin macros
+// Stuff for using console from the GUI applications

 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
+#ifndef __WXWINCE__

 
 

-BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
-    EVT_IDLE(wxApp::OnIdle)
-    EVT_END_SESSION(wxApp::OnEndSession)
-    EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
-END_EVENT_TABLE()
+#include <wx/dynlib.h>

 
 

-// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
-// fails
-class wxCallBaseCleanup
+namespace

 {
 {

-public:
-    wxCallBaseCleanup(wxApp *app) : m_app(app) { }
-    ~wxCallBaseCleanup() { if ( m_app ) m_app->wxAppBase::CleanUp(); }

 
 

-    void Dismiss() { m_app = NULL; }
+/*
+    Helper class to manipulate console from a GUI app.

 
 

-private:
-    wxApp *m_app;
-};
+    Notice that console output is available in the GUI app only if:
+    - AttachConsole() returns TRUE (which means it never works under pre-XP)
+    - we have a valid STD_ERROR_HANDLE
+    - command history hasn't been changed since our startup

 
 

-//// Initialize
-bool wxApp::Initialize(int& argc, wxChar **argv)
+    To check if all these conditions are verified, you need to simple call
+    IsOkToUse(). It will check the first two conditions above the first time it
+    is called (and if this fails, the subsequent calls will return immediately)
+    and also recheck the last one every time it is called.
+ */
+class wxConsoleStderr

 {
 {

-    if ( !wxAppBase::Initialize(argc, argv) )
-        return false;
+public:
+    // default ctor does nothing, call Init() before using this class
+    wxConsoleStderr()
+    {
+        m_hStderr = INVALID_HANDLE_VALUE;
+        m_historyLen =
+        m_dataLen =
+        m_dataLine = 0;

 
 

-    // ensure that base cleanup is done if we return too early
-    wxCallBaseCleanup callBaseCleanup(this);
+        m_ok = -1;
+    }

 
 

-    // the first thing to do is to check if we're trying to run an Unicode
-    // program under Win9x w/o MSLU emulation layer - if so, abort right now
-    // as it has no chance to work
-#if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
-    if ( wxGetOsVersion() != wxWINDOWS_NT )
+    ~wxConsoleStderr()

     {
     {

-        // note that we can use MessageBoxW() as it's implemented even under
-        // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
-        // used by wxLocale are not
-        ::MessageBox
-        (
-         NULL,
-         _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
-         _T("wxWindows Fatal Error"),
-         MB_ICONERROR | MB_OK
-        );
-
-        return FALSE;
+        if ( m_hStderr != INVALID_HANDLE_VALUE )
+        {
+            if ( !::FreeConsole() )
+            {
+                wxLogLastError(_T("FreeConsole"));
+            }
+        }

     }
     }

-#endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU

 
 

-#if defined(__WIN95__) && !defined(__WXMICROWIN__)
-    InitCommonControls();
-#endif // __WIN95__
+    // return true if we were successfully initialized and there had been no
+    // console activity which would interfere with our output since then
+    bool IsOkToUse() const
+    {
+        if ( m_ok == -1 )
+        {
+            wxConsoleStderr * const self = wx_const_cast(wxConsoleStderr *, this);
+            self->m_ok = self->DoInit();

 
 

-#if wxUSE_OLE || wxUSE_DRAG_AND_DROP
+            // no need to call IsHistoryUnchanged() as we just initialized
+            // m_history anyhow
+            return m_ok == 1;
+        }

 
 

-#ifdef __WIN16__
-    // for OLE, enlarge message queue to be as large as possible
-    int iMsg = 96;
-    while (!SetMessageQueue(iMsg) && (iMsg -= 8))
-        ;
-#endif // Win16
+        return m_ok && IsHistoryUnchanged();
+    }

 
 

-#if wxUSE_OLE
-    // we need to initialize OLE library
-    if ( FAILED(::OleInitialize(NULL)) )
-        wxLogError(_("Cannot initialize OLE"));
-#endif

 
 

-#endif // wxUSE_OLE
+    // output the provided text on the console, return true if ok
+    bool Write(const wxString& text);

 
 

-#if wxUSE_CTL3D
-    if (!Ctl3dRegister(wxhInstance))
-        wxLogError(wxT("Cannot register CTL3D"));
+private:
+    // called by Init() once only to do the real initialization
+    bool DoInit();

 
 

-    Ctl3dAutoSubclass(wxhInstance);
-#endif // wxUSE_CTL3D
+    // retrieve the command line history into the provided buffer and return
+    // its length
+    int GetCommandHistory(wxWxCharBuffer& buf) const;

 
 

-    RegisterWindowClasses();
+    // check if the console history has changed
+    bool IsHistoryUnchanged() const;

 
 

-#if defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    // Create the brush for disabling bitmap buttons
+    int m_ok;                   // initially -1, set to true or false by Init()

 
 

-    LOGBRUSH lb;
-    lb.lbStyle = BS_PATTERN;
-    lb.lbColor = 0;
-    lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
-    if ( lb.lbHatch )
-    {
-        wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
-        ::DeleteObject( (HGDIOBJ)lb.lbHatch );
-    }
-    //else: wxWindows resources are probably not linked in
-#endif
+    wxDynamicLibrary m_dllKernel32;

 
 

-#if wxUSE_PENWINDOWS
-    wxRegisterPenWin();
-#endif
+    HANDLE m_hStderr;           // console handle, if it's valid we must call
+                                // FreeConsole() (even if m_ok != 1)

 
 

-    wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
+    wxWxCharBuffer m_history;   // command history on startup
+    int m_historyLen;           // length command history buffer

 
 

-    // This is to foil optimizations in Visual C++ that throw out dummy.obj.
-    // PLEASE DO NOT ALTER THIS.
-#if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
-    extern char wxDummyChar;
-    if (wxDummyChar) wxDummyChar++;
-#endif
+    wxCharBuffer m_data;        // data between empty line and cursor position
+    int m_dataLen;              // length data buffer
+    int m_dataLine;             // line offset

 
 

-#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    wxSetKeyboardHook(TRUE);
-#endif
+    typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands,
+                                                       DWORD nBufferLength,
+                                                       LPCTSTR sExeName);
+    typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName);

 
 

-    callBaseCleanup.Dismiss();
-
-    return true;
-}
+    GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory;
+    GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength;

 
 

-// ---------------------------------------------------------------------------
-// RegisterWindowClasses
-// ---------------------------------------------------------------------------
+    DECLARE_NO_COPY_CLASS(wxConsoleStderr)
+};

 
 

-// TODO we should only register classes really used by the app. For this it
-//      would be enough to just delay the class registration until an attempt
-//      to create a window of this class is made.
-bool wxApp::RegisterWindowClasses()
+bool wxConsoleStderr::DoInit()

 {
 {

-    WNDCLASS wndclass;
-    wxZeroMemory(wndclass);
+    HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE);

 
 

-    // for each class we register one with CS_(V|H)REDRAW style and one
-    // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
-    static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
-    static const long styleNoRedraw = CS_DBLCLKS;
+    if ( hStderr == INVALID_HANDLE_VALUE || !hStderr )
+        return false;

 
 

-    // the fields which are common to all classes
-    wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
-    wndclass.hInstance     = wxhInstance;
-    wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
+    if ( !m_dllKernel32.Load(_T("kernel32.dll")) )
+        return false;

 
 

-    // Register the frame window class.
-    wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
-    wndclass.lpszClassName = wxCanvasClassName;
-    wndclass.style         = styleNormal;
+    typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId);
+    AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32);

 
 

-    if ( !RegisterClass(&wndclass) )
-    {
-        wxLogLastError(wxT("RegisterClass(frame)"));
-    }
+    if ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) )
+        return false;

 
 

-    // "no redraw" frame
-    wndclass.lpszClassName = wxCanvasClassNameNR;
-    wndclass.style         = styleNoRedraw;
+    // console attached, set m_hStderr now to ensure that we free it in the
+    // dtor
+    m_hStderr = hStderr;

 
 

-    if ( !RegisterClass(&wndclass) )
-    {
-        wxLogLastError(wxT("RegisterClass(no redraw frame)"));
-    }
+    wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32);
+    if ( !m_pfnGetConsoleCommandHistory )
+        return false;
+
+    wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32);
+    if ( !m_pfnGetConsoleCommandHistoryLength )
+        return false;
+
+    // remember the current command history to be able to compare with it later
+    // in IsHistoryUnchanged()
+    m_historyLen = GetCommandHistory(m_history);
+    if ( !m_history )
+        return false;

 
 

-    // Register the MDI frame window class.
-    wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
-    wndclass.lpszClassName = wxMDIFrameClassName;
-    wndclass.style         = styleNormal;

 
 

-    if ( !RegisterClass(&wndclass) )
+    // now find the first blank line above the current position
+    CONSOLE_SCREEN_BUFFER_INFO csbi;
+
+    if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )

     {
     {

-        wxLogLastError(wxT("RegisterClass(MDI parent)"));
+        wxLogLastError(_T("GetConsoleScreenBufferInfo"));
+        return false;

     }
 
     }
 

-    // "no redraw" MDI frame
-    wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
-    wndclass.style         = styleNoRedraw;
+    COORD pos;
+    pos.X = 0;
+    pos.Y = csbi.dwCursorPosition.Y + 1;

 
 

-    if ( !RegisterClass(&wndclass) )
+    // we decide that a line is empty if first 4 characters are spaces
+    DWORD ret;
+    char buf[4];
+    do

     {
     {

-        wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
-    }
+        pos.Y--;
+        if ( !::ReadConsoleOutputCharacterA(m_hStderr, buf, WXSIZEOF(buf),
+                                            pos, &ret) )
+        {
+            wxLogLastError(_T("ReadConsoleOutputCharacterA"));
+            return false;
+        }
+    } while ( wxStrncmp("    ", buf, WXSIZEOF(buf)) != 0 );

 
 

-    // Register the MDI child frame window class.
-    wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
-    wndclass.lpszClassName = wxMDIChildFrameClassName;
-    wndclass.style         = styleNormal;
+    // calculate line offset and length of data
+    m_dataLine = csbi.dwCursorPosition.Y - pos.Y;
+    m_dataLen = m_dataLine*csbi.dwMaximumWindowSize.X + csbi.dwCursorPosition.X;

 
 

-    if ( !RegisterClass(&wndclass) )
+    if ( m_dataLen > 0 )

     {
     {

-        wxLogLastError(wxT("RegisterClass(MDI child)"));
+        m_data.extend(m_dataLen);
+        if ( !::ReadConsoleOutputCharacterA(m_hStderr, m_data.data(), m_dataLen,
+                                            pos, &ret) )
+        {
+            wxLogLastError(_T("ReadConsoleOutputCharacterA"));
+            return false;
+        }

     }
 
     }
 

-    // "no redraw" MDI child frame
-    wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
-    wndclass.style         = styleNoRedraw;
+    return true;
+}
+
+int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const
+{
+    // these functions are internal and may only be called by cmd.exe
+    static const wxChar *CMD_EXE = _T("cmd.exe");

 
 

-    if ( !RegisterClass(&wndclass) )
+    const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE);
+    if ( len )

     {
     {

-        wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
+        buf.extend(len);
+
+        int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE);
+
+#if !wxUSE_UNICODE
+        // there seems to be a bug in the GetConsoleCommandHistoryA(), it
+        // returns the length of Unicode string and not ANSI one
+        len2 /= 2;
+#endif // !wxUSE_UNICODE
+
+        if ( len2 != len )
+        {
+            wxFAIL_MSG( _T("failed getting history?") );
+        }

     }
 
     }
 

-    return TRUE;
+    return len;

 }
 
 }
 

-// ---------------------------------------------------------------------------
-// UnregisterWindowClasses
-// ---------------------------------------------------------------------------
+bool wxConsoleStderr::IsHistoryUnchanged() const
+{
+    wxASSERT_MSG( m_ok == 1, _T("shouldn't be called if not initialized") );

 
 

-bool wxApp::UnregisterWindowClasses()
+    // get (possibly changed) command history
+    wxWxCharBuffer history;
+    const int historyLen = GetCommandHistory(history);
+
+    // and compare it with the original one
+    return historyLen == m_historyLen && history &&
+                memcmp(m_history, history, historyLen) == 0;
+}
+
+bool wxConsoleStderr::Write(const wxString& text)

 {
 {

-    bool retval = TRUE;
+    wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE,
+                    _T("should only be called if Init() returned true") );

 
 

-#ifndef __WXMICROWIN__
-    // MDI frame window class.
-    if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
+    // get current position
+    CONSOLE_SCREEN_BUFFER_INFO csbi;
+    if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )

     {
     {

-        wxLogLastError(wxT("UnregisterClass(MDI parent)"));
-
-        retval = FALSE;
+        wxLogLastError(_T("GetConsoleScreenBufferInfo"));
+        return false;

     }
 
     }
 

-    // "no redraw" MDI frame
-    if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
-    {
-        wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
+    // and calculate new position (where is empty line)
+    csbi.dwCursorPosition.X = 0;
+    csbi.dwCursorPosition.Y -= m_dataLine;

 
 

-        retval = FALSE;
+    if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) )
+    {
+        wxLogLastError(_T("SetConsoleCursorPosition"));
+        return false;

     }
 
     }
 

-    // MDI child frame window class.
-    if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
+    DWORD ret;
+    if ( !::FillConsoleOutputCharacter(m_hStderr, _T(' '), m_dataLen,
+                                       csbi.dwCursorPosition, &ret) )

     {
     {

-        wxLogLastError(wxT("UnregisterClass(MDI child)"));
-
-        retval = FALSE;
+        wxLogLastError(_T("FillConsoleOutputCharacter"));
+        return false;

     }
 
     }
 

-    // "no redraw" MDI child frame
-    if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
+    if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) )

     {
     {

-        wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
-
-        retval = FALSE;
+        wxLogLastError(_T("WriteConsole"));
+        return false;

     }
 
     }
 

-    // canvas class name
-    if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )
-    {
-        wxLogLastError(wxT("UnregisterClass(canvas)"));
+    WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0);

 
 

-        retval = FALSE;
-    }
+    return true;
+}

 
 

-    if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
-    {
-        wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
+wxConsoleStderr s_consoleStderr;

 
 

-        retval = FALSE;
-    }
-#endif // __WXMICROWIN__
+} // anonymous namespace

 
 

-    return retval;
+bool wxGUIAppTraits::CanUseStderr()
+{
+    return s_consoleStderr.IsOkToUse();

 }
 
 }
 

-void wxApp::CleanUp()
+bool wxGUIAppTraits::WriteToStderr(const wxString& text)

 {
 {

-#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    wxSetKeyboardHook(FALSE);
-#endif
+    return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text);
+}

 
 

-#if wxUSE_PENWINDOWS
-    wxCleanUpPenWin();
-#endif
+#endif // !__WXWINCE__

 
 

-    if ( wxDisableButtonBrush )
-        ::DeleteObject( wxDisableButtonBrush );
+// ===========================================================================
+// wxApp implementation
+// ===========================================================================

 
 

-#if wxUSE_OLE
-    ::OleUninitialize();
-#endif
+int wxApp::m_nCmdShow = SW_SHOWNORMAL;

 
 

-    // for an EXE the classes are unregistered when it terminates but DLL may
-    // be loaded several times (load/unload/load) into the same process in
-    // which case the registration will fail after the first time if we don't
-    // unregister the classes now
-    UnregisterWindowClasses();
+// ---------------------------------------------------------------------------
+// wxWin macros
+// ---------------------------------------------------------------------------

 
 

-#if wxUSE_CTL3D
-    Ctl3dUnregister(wxhInstance);
-#endif
+IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)

 
 

-    delete wxWinHandleHash;
-    wxWinHandleHash = NULL;
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+    EVT_IDLE(wxApp::OnIdle)
+    EVT_END_SESSION(wxApp::OnEndSession)
+    EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
+END_EVENT_TABLE()

 
 

-    wxAppBase::CleanUp();
-}
+// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
+// fails
+class wxCallBaseCleanup
+{
+public:
+    wxCallBaseCleanup(wxApp *app) : m_app(app) { }
+    ~wxCallBaseCleanup() { if ( m_app ) m_app->wxAppBase::CleanUp(); }

 
 

-// ----------------------------------------------------------------------------
-// wxApp ctor/dtor
-// ----------------------------------------------------------------------------
+    void Dismiss() { m_app = NULL; }

 
 

-wxApp::wxApp()
-{
-    m_printMode = wxPRINT_WINDOWS;
-}
+private:
+    wxApp *m_app;
+};

 
 

-wxApp::~wxApp()
+//// Initialize
+bool wxApp::Initialize(int& argc, wxChar **argv)

 {
 {

-    // our cmd line arguments are allocated inside wxEntry(HINSTANCE), they
-    // don't come from main(), so we have to free them
+    if ( !wxAppBase::Initialize(argc, argv) )
+        return false;
+
+    // ensure that base cleanup is done if we return too early
+    wxCallBaseCleanup callBaseCleanup(this);

 
 

-    while ( argc )
+#ifdef __WXWINCE__
+    wxString tmp = GetAppName();
+    tmp += wxT("ClassName");
+    wxCanvasClassName = wxStrdup( tmp.wc_str() );
+    tmp += wxT("NR");
+    wxCanvasClassNameNR = wxStrdup( tmp.wc_str() );
+    HWND hWnd = FindWindow( wxCanvasClassNameNR, NULL );
+    if (hWnd)

     {
     {

-        // m_argv elements were allocated by wxStrdup()
-        free(argv[--argc]);
+        SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) );
+        return false;

     }
     }

+#endif

 
 

-    // but m_argv itself -- using new[]
-    delete [] argv;
-}
+#if !defined(__WXMICROWIN__)
+    InitCommonControls();
+#endif // !defined(__WXMICROWIN__)

 
 

-bool wxApp::Initialized()
-{
-#ifndef _WINDLL
-    if (GetTopWindow())
-        return TRUE;
-    else
-        return FALSE;
-#else // Assume initialized if DLL (no way of telling)
-    return TRUE;
+#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
+    SHInitExtraControls();
+#endif
+
+#ifndef __WXWINCE__
+    // Don't show a message box if a function such as SHGetFileInfo
+    // fails to find a device.
+    SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
+#endif
+
+    wxOleInitialize();
+
+    RegisterWindowClasses();
+
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    wxSetKeyboardHook(true);

 #endif
 #endif

+
+    callBaseCleanup.Dismiss();
+
+    return true;

 }
 
 }
 

-/*
- * Get and process a message, returning FALSE if WM_QUIT
- * received (and also set the flag telling the app to exit the main loop)
- *
- */
-bool wxApp::DoMessage()
+// ---------------------------------------------------------------------------
+// RegisterWindowClasses
+// ---------------------------------------------------------------------------
+
+// This function registers the given class name and stores a pointer to a
+// heap-allocated copy of it at the specified location, it must be deleted
+// later.
+static void RegisterAndStoreClassName(const wxString& uniqueClassName,
+                                      const wxChar **className,
+                                      WNDCLASS *lpWndClass)

 {
 {

-    BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
-    if ( rc == 0 )
-    {
-        // got WM_QUIT
-        m_keepGoing = FALSE;
+    const size_t length = uniqueClassName.length() + 1; // for trailing NUL
+    wxChar *newChars = new wxChar[length];
+    wxStrncpy(newChars, uniqueClassName, length);
+    *className = newChars;
+    lpWndClass->lpszClassName = *className;

 
 

-        return FALSE;
-    }
-    else if ( rc == -1 )
+    if ( !::RegisterClass(lpWndClass) )

     {
     {

-        // should never happen, but let's test for it nevertheless
-        wxLogLastError(wxT("GetMessage"));
+        wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), newChars));

     }
     }

-    else
-    {
-#if wxUSE_THREADS
-        wxASSERT_MSG( wxThread::IsMain(),
-                      wxT("only the main thread can process Windows messages") );
+}

 
 

-        static bool s_hadGuiLock = TRUE;
-        static wxMsgArray s_aSavedMessages;
+// This function registers the class defined by the provided WNDCLASS struct
+// contents using a unique name constructed from the specified base name and
+// and a suffix unique to this library instance. It also stores the generated
+// unique names for normal and "no redraw" versions of the class in the
+// provided variables, caller must delete their contents later.
+static void RegisterClassWithUniqueNames(const wxString& baseName,
+                                         const wxChar **className,
+                                         const wxChar **classNameNR,
+                                         WNDCLASS *lpWndClass)
+{
+    // for each class we register one with CS_(V|H)REDRAW style and one
+    // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
+    static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
+    static const long styleNoRedraw = CS_DBLCLKS;

 
 

-        // if a secondary thread owns is doing GUI calls, save all messages for
-        // later processing - we can't process them right now because it will
-        // lead to recursive library calls (and we're not reentrant)
-        if ( !wxGuiOwnedByMainThread() )
-        {
-            s_hadGuiLock = FALSE;
+    const wxString uniqueSuffix(wxString::Format(wxT("@%p"), className));

 
 

-            // leave out WM_COMMAND messages: too dangerous, sometimes
-            // the message will be processed twice
-            if ( !wxIsWaitingForThread() ||
-                    s_currentMsg.message != WM_COMMAND )
-            {
-                s_aSavedMessages.Add(s_currentMsg);
-            }
+    wxString uniqueClassName(baseName + uniqueSuffix);
+    lpWndClass->style = styleNormal;
+    RegisterAndStoreClassName(uniqueClassName, className, lpWndClass);

 
 

-            return TRUE;
-        }
-        else
-        {
-            // have we just regained the GUI lock? if so, post all of the saved
-            // messages
-            //
-            // FIXME of course, it's not _exactly_ the same as processing the
-            //       messages normally - expect some things to break...
-            if ( !s_hadGuiLock )
-            {
-                s_hadGuiLock = TRUE;
+    // NB: remember that code elsewhere supposes that no redraw class names
+    //     use the same names as normal classes with "NR" suffix so we must put
+    //     "NR" at the end instead of using more natural baseName+"NR"+suffix
+    wxString uniqueClassNameNR(uniqueClassName + wxT("NR"));
+    lpWndClass->style = styleNoRedraw;
+    RegisterAndStoreClassName(uniqueClassNameNR, classNameNR, lpWndClass);
+}

 
 

-                size_t count = s_aSavedMessages.GetCount();
-                for ( size_t n = 0; n < count; n++ )
-                {
-                    MSG& msg = s_aSavedMessages[n];
+// TODO we should only register classes really used by the app. For this it
+//      would be enough to just delay the class registration until an attempt
+//      to create a window of this class is made.
+bool wxApp::RegisterWindowClasses()
+{
+    WNDCLASS wndclass;
+    wxZeroMemory(wndclass);

 
 

-                    DoMessage((WXMSG *)&msg);
-                }
+    // the fields which are common to all classes
+    wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
+    wndclass.hInstance     = wxhInstance;
+    wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);

 
 

-                s_aSavedMessages.Empty();
-            }
-        }
-#endif // wxUSE_THREADS
+    // register the class for all normal windows and "no redraw" frames
+    wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
+    RegisterClassWithUniqueNames(wxT("wxWindowClass"),
+                                 &wxCanvasClassName,
+                                 &wxCanvasClassNameNR,
+                                 &wndclass);

 
 

-        // Process the message
-        DoMessage((WXMSG *)&s_currentMsg);
-    }
+    // Register the MDI frame window class and "no redraw" MDI frame
+    wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
+    RegisterClassWithUniqueNames(wxT("wxMDIFrameClass"),
+                                 &wxMDIFrameClassName,
+                                 &wxMDIFrameClassNameNoRedraw,
+                                 &wndclass);

 
 

-    return TRUE;
-}
+    // Register the MDI child frame window class and "no redraw" MDI child frame
+    wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
+    RegisterClassWithUniqueNames(wxT("wxMDIChildFrameClass"),
+                                 &wxMDIChildFrameClassName,
+                                 &wxMDIChildFrameClassNameNoRedraw,
+                                 &wndclass);

 
 

-void wxApp::DoMessage(WXMSG *pMsg)
-{
-    if ( !ProcessMessage(pMsg) )
-    {
-        ::TranslateMessage((MSG *)pMsg);
-        ::DispatchMessage((MSG *)pMsg);
-    }
+    return true;

 }
 
 }
 

-/*
- * Keep trying to process messages until WM_QUIT
- * received.
- *
- * If there are messages to be processed, they will all be
- * processed and OnIdle will not be called.
- * When there are no more messages, OnIdle is called.
- * If OnIdle requests more time,
- * it will be repeatedly called so long as there are no pending messages.
- * A 'feature' of this is that once OnIdle has decided that no more processing
- * is required, then it won't get processing time until further messages
- * are processed (it'll sit in DoMessage).
- */
+// ---------------------------------------------------------------------------
+// UnregisterWindowClasses
+// ---------------------------------------------------------------------------

 
 

-int wxApp::MainLoop()
+// This function unregisters the class with the given name and frees memory
+// allocated for it by RegisterAndStoreClassName().
+static bool UnregisterAndFreeClassName(const wxChar **ppClassName)

 {
 {

-    m_keepGoing = TRUE;
+    bool retval = true;

 
 

-    while ( m_keepGoing )
+    if ( !::UnregisterClass(*ppClassName, wxhInstance) )

     {
     {

-#if wxUSE_THREADS
-        wxMutexGuiLeaveOrEnter();
-#endif // wxUSE_THREADS
-
-        while ( !Pending() && ProcessIdle() )
-            ;
+        wxLogLastError(
+                wxString::Format(wxT("UnregisterClass(%s)"), *ppClassName));

 
 

-        // a message came or no more idle processing to do
-        DoMessage();
+        retval = false;

     }
 
     }
 

-    return s_currentMsg.wParam;
-}
+    delete [] (wxChar*) *ppClassName;
+    *ppClassName = NULL;

 
 

-void wxApp::ExitMainLoop()
-{
-    // this will set m_keepGoing to FALSE a bit later
-    ::PostQuitMessage(0);
+    return retval;

 }
 
 }
 

-bool wxApp::Pending()
+bool wxApp::UnregisterWindowClasses()

 {
 {

-    return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
-}
+    bool retval = true;

 
 

-void wxApp::Dispatch()
-{
-    DoMessage();
-}
+#ifndef __WXMICROWIN__
+    if ( !UnregisterAndFreeClassName(&wxMDIFrameClassName) )
+        retval = false;

 
 

-/*
- * Give all windows a chance to preprocess
- * the message. Some may have accelerator tables, or have
- * MDI complications.
- */
+    if ( !UnregisterAndFreeClassName(&wxMDIFrameClassNameNoRedraw) )
+        retval = false;

 
 

-bool wxApp::ProcessMessage(WXMSG *wxmsg)
-{
-    MSG *msg = (MSG *)wxmsg;
-    HWND hwnd = msg->hwnd;
-    wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
-
-    // this may happen if the event occured in a standard modeless dialog (the
-    // only example of which I know of is the find/replace dialog) - then call
-    // IsDialogMessage() to make TAB navigation in it work
-    if ( !wndThis )
-    {
-        // we need to find the dialog containing this control as
-        // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
-        // them) if we call it for the control itself
-        while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
-        {
-            hwnd = ::GetParent(hwnd);
-        }
+    if ( !UnregisterAndFreeClassName(&wxMDIChildFrameClassName) )
+        retval = false;

 
 

-        return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
-    }
+    if ( !UnregisterAndFreeClassName(&wxMDIChildFrameClassNameNoRedraw) )
+        retval = false;

 
 

-#if wxUSE_TOOLTIPS
-    // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
-    // popup the tooltip bubbles
-    if ( (msg->message == WM_MOUSEMOVE) )
-    {
-        wxToolTip *tt = wndThis->GetToolTip();
-        if ( tt )
-        {
-            tt->RelayEvent(wxmsg);
-        }
-    }
-#endif // wxUSE_TOOLTIPS
+    if ( !UnregisterAndFreeClassName(&wxCanvasClassName) )
+        retval = false;

 
 

-    // allow the window to prevent certain messages from being
-    // translated/processed (this is currently used by wxTextCtrl to always
-    // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
-    if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
-    {
-        return FALSE;
-    }
+    if ( !UnregisterAndFreeClassName(&wxCanvasClassNameNR) )
+        retval = false;
+#endif // __WXMICROWIN__

 
 

-    // try translations first: the accelerators override everything
-    wxWindow *wnd;
+    return retval;
+}

 
 

-    for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
-    {
-        if ( wnd->MSWTranslateMessage(wxmsg))
-            return TRUE;
+void wxApp::CleanUp()
+{
+    // all objects pending for deletion must be deleted first, otherwise
+    // UnregisterWindowClasses() call wouldn't succeed (because windows
+    // using the classes being unregistered still exist), so call the base
+    // class method first and only then do our clean up
+    wxAppBase::CleanUp();

 
 

-        // stop at first top level window, i.e. don't try to process the key
-        // strokes originating in a dialog using the accelerators of the parent
-        // frame - this doesn't make much sense
-        if ( wnd->IsTopLevel() )
-            break;
-    }
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    wxSetKeyboardHook(false);
+#endif

 
 

-    // now try the other hooks (kbd navigation is handled here): we start from
-    // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
-    // called above
-    for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
-    {
-        if ( wnd->MSWProcessMessage(wxmsg) )
-            return TRUE;
-    }
+    wxOleUninitialize();
+
+    // for an EXE the classes are unregistered when it terminates but DLL may
+    // be loaded several times (load/unload/load) into the same process in
+    // which case the registration will fail after the first time if we don't
+    // unregister the classes now
+    UnregisterWindowClasses();

 
 

-    // no special preprocessing for this message, dispatch it normally
-    return FALSE;
+#ifdef __WXWINCE__
+    free( wxCanvasClassName );
+    free( wxCanvasClassNameNR );
+#endif

 }
 
 }
 

-// this is a temporary hack and will be replaced by using wxEventLoop in the
-// future
-//
-// it is needed to allow other event loops (currently only one: the modal
-// dialog one) to reset the OnIdle() semaphore because otherwise OnIdle()
-// wouldn't do anything while a modal dialog shown from OnIdle() call is shown.
-bool wxIsInOnIdleFlag = FALSE;
+// ----------------------------------------------------------------------------
+// wxApp ctor/dtor
+// ----------------------------------------------------------------------------

 
 

-void wxApp::OnIdle(wxIdleEvent& event)
+wxApp::wxApp()

 {
 {

-    // Avoid recursion (via ProcessEvent default case)
-    if ( wxIsInOnIdleFlag )
-        return;
-
-    wxIsInOnIdleFlag = TRUE;
-
-    // If there are pending events, we must process them: pending events
-    // are either events to the threads other than main or events posted
-    // with wxPostEvent() functions
-    // GRG: I have moved this here so that all pending events are processed
-    //   before starting to delete any objects. This behaves better (in
-    //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
-    //   behaviour. Changed Feb/2000 before 2.1.14
-    ProcessPendingEvents();
+    m_printMode = wxPRINT_WINDOWS;
+}

 
 

-    // 'Garbage' collection of windows deleted with Close().
-    DeletePendingObjects();
+wxApp::~wxApp()
+{
+}

 
 

-#if wxUSE_LOG
-    // flush the logged messages if any
-    wxLog::FlushActive();
-#endif // wxUSE_LOG
+// ----------------------------------------------------------------------------
+// wxApp idle handling
+// ----------------------------------------------------------------------------

 
 

+void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event))
+{

 #if wxUSE_DC_CACHEING
     // automated DC cache management: clear the cached DCs and bitmap
     // if it's likely that the app has finished with them, that is, we
     // get an idle event and we're not dragging anything.
     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
 #if wxUSE_DC_CACHEING
     // automated DC cache management: clear the cached DCs and bitmap
     // if it's likely that the app has finished with them, that is, we
     // get an idle event and we're not dragging anything.
     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))

-        wxDC::ClearCache();
+        wxMSWDCImpl::ClearCache();

 #endif // wxUSE_DC_CACHEING
 #endif // wxUSE_DC_CACHEING

-
-    // Send OnIdle events to all windows
-    if ( SendIdleEvents() )
-    {
-        // SendIdleEvents() returns TRUE if at least one window requested more
-        // idle events
-        event.RequestMore(TRUE);
-    }
-
-    wxIsInOnIdleFlag = FALSE;

 }
 
 void wxApp::WakeUpIdle()
 }
 
 void wxApp::WakeUpIdle()


@@ -836,21 +852,56 @@ void wxApp::WakeUpIdle()
     // start up again.  Doing it this way ensures that the idle handler
     // wakes up in the right thread (see also wxWakeUpMainThread() which does
     // the same for the main app thread only)
     // start up again.  Doing it this way ensures that the idle handler
     // wakes up in the right thread (see also wxWakeUpMainThread() which does
     // the same for the main app thread only)

-    wxWindow *topWindow = wxTheApp->GetTopWindow();
+    wxWindow * const topWindow = wxTheApp->GetTopWindow();

     if ( topWindow )
     {
     if ( topWindow )
     {

-        if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
+        HWND hwndTop = GetHwndOf(topWindow);
+
+        // Do not post WM_NULL if there's already a pending WM_NULL to avoid
+        // overflowing the message queue.
+        //
+        // Notice that due to a limitation of PeekMessage() API (which handles
+        // 0,0 range specially), we have to check the range from 0-1 instead.
+        // This still makes it possible to overflow the queue with WM_NULLs by
+        // interspersing the calles to WakeUpIdle() with windows creation but
+        // it should be rather hard to do it accidentally.
+        MSG msg;
+        if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) ||
+              ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) )

         {
         {

-            // should never happen
-            wxLogLastError(wxT("PostMessage(WM_NULL)"));
+            if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) )
+            {
+                // should never happen
+                wxLogLastError(wxT("PostMessage(WM_NULL)"));
+            }

         }
     }
 }
 
         }
     }
 }
 

+// ----------------------------------------------------------------------------
+// other wxApp event hanlders
+// ----------------------------------------------------------------------------
+

 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
 {
 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
 {

-    if (GetTopWindow())
-        GetTopWindow()->Close(TRUE);
+    // Windows will terminate the process soon after we return from
+    // WM_ENDSESSION handler or when we delete our last window, so make sure we
+    // at least execute our cleanup code before
+
+    // prevent the window from being destroyed when the corresponding wxTLW is
+    // destroyed: this will result in a leak of a HWND, of course, but who
+    // cares when the process is being killed anyhow
+    if ( !wxTopLevelWindows.empty() )
+        wxTopLevelWindows[0]->SetHWND(0);
+
+    const int rc = OnExit();
+
+    wxEntryCleanup();
+
+    // calling exit() instead of ExitProcess() or not doing anything at all and
+    // being killed by Windows has the advantage of executing the dtors of
+    // global objects
+    exit(rc);

 }
 
 // Default behaviour: close the application with prompts. The
 }
 
 // Default behaviour: close the application with prompts. The


@@ -860,136 +911,162 @@ void wxApp::OnQueryEndSession(wxCloseEvent& event)
     if (GetTopWindow())
     {
         if (!GetTopWindow()->Close(!event.CanVeto()))
     if (GetTopWindow())
     {
         if (!GetTopWindow()->Close(!event.CanVeto()))

-            event.Veto(TRUE);
+            event.Veto(true);

     }
 }
 
     }
 }
 

-typedef struct _WXADllVersionInfo
+// ----------------------------------------------------------------------------
+// system DLL versions
+// ----------------------------------------------------------------------------
+
+// these functions have trivial inline implementations for CE
+#ifndef __WXWINCE__
+
+#if wxUSE_DYNLIB_CLASS
+
+namespace

 {
 {

-        DWORD cbSize;
-        DWORD dwMajorVersion;                   // Major version
-        DWORD dwMinorVersion;                   // Minor version
-        DWORD dwBuildNumber;                    // Build number
-        DWORD dwPlatformID;                     // DLLVER_PLATFORM_*
-} WXADLLVERSIONINFO;

 
 

-typedef HRESULT (CALLBACK* WXADLLGETVERSIONPROC)(WXADLLVERSIONINFO *);
+// helper function: retrieve the DLL version by using DllGetVersion(), returns
+// 0 if the DLL doesn't export such function
+int CallDllGetVersion(wxDynamicLibrary& dll)
+{
+    // now check if the function is available during run-time
+    wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll );
+    if ( !pfnDllGetVersion )
+        return 0;
+
+    DLLVERSIONINFO dvi;
+    dvi.cbSize = sizeof(dvi);
+
+    HRESULT hr = (*pfnDllGetVersion)(&dvi);
+    if ( FAILED(hr) )
+    {
+        wxLogApiError(_T("DllGetVersion"), hr);
+
+        return 0;
+    }
+
+    return 100*dvi.dwMajorVersion + dvi.dwMinorVersion;
+}
+
+} // anonymous namespace

 
 /* static */
 int wxApp::GetComCtl32Version()
 {
 
 /* static */
 int wxApp::GetComCtl32Version()
 {

-#if defined(__WXMICROWIN__) || defined(__WXWINCE__)
-    return 0;
-#else

     // cache the result
     // cache the result

+    //
+    // NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice,
+    //     but as its value should be the same both times it doesn't matter

     static int s_verComCtl32 = -1;
 
     static int s_verComCtl32 = -1;
 

-    wxCRIT_SECT_DECLARE(csComCtl32);
-    wxCRIT_SECT_LOCKER(lock, csComCtl32);
-

     if ( s_verComCtl32 == -1 )
     {
     if ( s_verComCtl32 == -1 )
     {

-        // initally assume no comctl32.dll at all
-        s_verComCtl32 = 0;
+        // we're prepared to handle the errors
+        wxLogNull noLog;

 
 

-        // do we have it?
-        HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
-        BOOL bFreeComCtl32 = FALSE ;
-        if(!hModuleComCtl32)
+        // the DLL should really be available
+        wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM);
+        if ( !dllComCtl32.IsLoaded() )

         {
         {

-            hModuleComCtl32 = ::LoadLibrary(wxT("COMCTL32.DLL")) ;
-            if(hModuleComCtl32)
-            {
-                bFreeComCtl32 = TRUE ;
-            }
+            s_verComCtl32 = 0;
+            return 0;

         }
 
         }
 

-        // if so, then we can check for the version
-        if ( hModuleComCtl32 )
+        // try DllGetVersion() for recent DLLs
+        s_verComCtl32 = CallDllGetVersion(dllComCtl32);
+
+        // if DllGetVersion() is unavailable either during compile or
+        // run-time, try to guess the version otherwise
+        if ( !s_verComCtl32 )

         {
         {

-            // try to use DllGetVersion() if available in _headers_
-                WXADLLGETVERSIONPROC pfnDllGetVersion = (WXADLLGETVERSIONPROC)
-                    ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
-                if ( pfnDllGetVersion )
+            // InitCommonControlsEx is unique to 4.70 and later
+            void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx"));
+            if ( !pfn )
+            {
+                // not found, must be 4.00
+                s_verComCtl32 = 400;
+            }
+            else // 4.70+
+            {
+                // many symbols appeared in comctl32 4.71, could use any of
+                // them except may be DllInstall()
+                pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB"));
+                if ( !pfn )

                 {
                 {

-                    WXADLLVERSIONINFO dvi;
-                    dvi.cbSize = sizeof(dvi);
-
-                    HRESULT hr = (*pfnDllGetVersion)(&dvi);
-                    if ( FAILED(hr) )
-                    {
-                        wxLogApiError(_T("DllGetVersion"), hr);
-                    }
-                    else
-                    {
-                        // this is incompatible with _WIN32_IE values, but
-                        // compatible with the other values returned by
-                        // GetComCtl32Version()
-                        s_verComCtl32 = 100*dvi.dwMajorVersion +
-                                            dvi.dwMinorVersion;
-                    }
+                    // not found, must be 4.70
+                    s_verComCtl32 = 470;

                 }
                 }

-                // DllGetVersion() unavailable either during compile or
-                // run-time, try to guess the version otherwise
-                if ( !s_verComCtl32 )
+                else

                 {
                 {

-                    // InitCommonControlsEx is unique to 4.70 and later
-                    FARPROC theProc = ::GetProcAddress
-                                        (
-                                         hModuleComCtl32,
-                                         "InitCommonControlsEx"
-                                        );
-
-                    if ( !theProc )
-                    {
-                        // not found, must be 4.00
-                        s_verComCtl32 = 400;
-                    }
-                    else
-                    {
-                        // many symbols appeared in comctl32 4.71, could use
-                        // any of them except may be DllInstall
-                        theProc = ::GetProcAddress
-                                    (
-                                     hModuleComCtl32,
-                                     "InitializeFlatSB"
-                                    );
-                        if ( !theProc )
-                        {
-                            // not found, must be 4.70
-                            s_verComCtl32 = 470;
-                        }
-                        else
-                        {
-                            // found, must be 4.71
-                            s_verComCtl32 = 471;
-                        }
-                    }
+                    // found, must be 4.71 or later
+                    s_verComCtl32 = 471;

                 }
                 }

+            }

         }
         }

+    }

 
 

-        if(bFreeComCtl32)
+    return s_verComCtl32;
+}
+
+/* static */
+int wxApp::GetShell32Version()
+{
+    static int s_verShell32 = -1;
+    if ( s_verShell32 == -1 )
+    {
+        // we're prepared to handle the errors
+        wxLogNull noLog;
+
+        wxDynamicLibrary dllShell32(_T("shell32.dll"), wxDL_VERBATIM);
+        if ( dllShell32.IsLoaded() )

         {
         {

-            ::FreeLibrary(hModuleComCtl32) ;
+            s_verShell32 = CallDllGetVersion(dllShell32);
+
+            if ( !s_verShell32 )
+            {
+                // there doesn't seem to be any way to distinguish between 4.00
+                // and 4.70 (starting from 4.71 we have DllGetVersion()) so
+                // just assume it is 4.0
+                s_verShell32 = 400;
+            }
+        }
+        else // failed load the DLL?
+        {
+            s_verShell32 = 0;

         }
     }
 
         }
     }
 

-    return s_verComCtl32;
-#endif
+    return s_verShell32;
+}
+
+#else // !wxUSE_DYNLIB_CLASS
+
+/* static */
+int wxApp::GetComCtl32Version()
+{
+    return 0;

 }
 
 }
 

+/* static */
+int wxApp::GetShell32Version()
+{
+    return 0;
+}
+
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
+
+#endif // !__WXWINCE__
+
+// ----------------------------------------------------------------------------

 // Yield to incoming messages
 // Yield to incoming messages

+// ----------------------------------------------------------------------------

 
 bool wxApp::Yield(bool onlyIfNeeded)
 {
     // MT-FIXME
 
 bool wxApp::Yield(bool onlyIfNeeded)
 {
     // MT-FIXME

-    static bool s_inYield = FALSE;
-
-#if wxUSE_LOG
-    // disable log flushing from here because a call to wxYield() shouldn't
-    // normally result in message boxes popping up &c
-    wxLog::Suspend();
-#endif // wxUSE_LOG
+    static bool s_inYield = false;

 
     if ( s_inYield )
     {
 
     if ( s_inYield )
     {


@@ -998,13 +1075,27 @@ bool wxApp::Yield(bool onlyIfNeeded)
             wxFAIL_MSG( wxT("wxYield called recursively" ) );
         }
 
             wxFAIL_MSG( wxT("wxYield called recursively" ) );
         }
 

-        return FALSE;
+        return false;

     }
 
     }
 

-    s_inYield = TRUE;
+    // set the flag and don't forget to reset it before returning
+    s_inYield = true;
+    wxON_BLOCK_EXIT_SET(s_inYield, false);
+
+
+#if wxUSE_LOG
+    // disable log flushing from here because a call to wxYield() shouldn't
+    // normally result in message boxes popping up &c
+    wxLog::Suspend();
+
+    // ensure the logs will be flashed again when we exit
+    wxON_BLOCK_EXIT0(wxLog::Resume);
+#endif // wxUSE_LOG
+

 
     // we don't want to process WM_QUIT from here - it should be processed in
     // the main event loop in order to stop it
 
     // we don't want to process WM_QUIT from here - it should be processed in
     // the main event loop in order to stop it

+    wxEventLoopGuarantor dummyLoopIfNeeded;

     MSG msg;
     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
             msg.message != WM_QUIT )
     MSG msg;
     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
             msg.message != WM_QUIT )


@@ -1013,20 +1104,53 @@ bool wxApp::Yield(bool onlyIfNeeded)
         wxMutexGuiLeaveOrEnter();
 #endif // wxUSE_THREADS
 
         wxMutexGuiLeaveOrEnter();
 #endif // wxUSE_THREADS
 

-        if ( !wxTheApp->DoMessage() )
+        if ( !wxTheApp->Dispatch() )

             break;
     }
 
     // if there are pending events, we must process them.
     ProcessPendingEvents();
 
             break;
     }
 
     // if there are pending events, we must process them.
     ProcessPendingEvents();
 

-#if wxUSE_LOG
-    // let the logs be flashed again
-    wxLog::Resume();
-#endif // wxUSE_LOG
+    return true;
+}
+
+#if wxUSE_EXCEPTIONS
+
+// ----------------------------------------------------------------------------
+// exception handling
+// ----------------------------------------------------------------------------

 
 

-    s_inYield = FALSE;
+bool wxApp::OnExceptionInMainLoop()
+{
+    // ask the user about what to do: use the Win32 API function here as it
+    // could be dangerous to use any wxWidgets code in this state
+    switch (
+            ::MessageBox
+              (
+                NULL,
+                _T("An unhandled exception occurred. Press \"Abort\" to \
+terminate the program,\r\n\
+\"Retry\" to exit the program normally and \"Ignore\" to try to continue."),
+                _T("Unhandled exception"),
+                MB_ABORTRETRYIGNORE |
+                MB_ICONERROR|
+                MB_TASKMODAL
+              )
+           )
+    {
+        case IDABORT:
+            throw;

 
 

-    return TRUE;
+        default:
+            wxFAIL_MSG( _T("unexpected MessageBox() return code") );
+            // fall through
+
+        case IDRETRY:
+            return false;
+
+        case IDIGNORE:
+            return true;
+    }

 }
 
 }
 

+#endif // wxUSE_EXCEPTIONS