Enable variadic macros for VC9 and later.

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

diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index f055309fe2a130705b5ac702dce94a6ee635ed1e..8df236020fc881019c00bcc13610558a0910381d 100644 (file)
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

 // Purpose:     wxApp
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Purpose:     wxApp
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart

-// Licence:     wxWidgets licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 // ===========================================================================
 /////////////////////////////////////////////////////////////////////////////
 
 // ===========================================================================


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

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #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"


@@ -42,18 +40,23 @@
     #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/dynlib.h"

+#include "wx/evtloop.h"
+#include "wx/thread.h"
+#include "wx/scopeguard.h"
+#include "wx/vector.h"

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

+#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"


@@ -61,12 +64,17 @@
 
 // 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


@@ -74,44 +82,62 @@
 #include <string.h>
 #include <ctype.h>
 
 #include <string.h>
 #include <ctype.h>
 

-#include "wx/msw/wrapcctl.h"
-
-// For MB_TASKMODAL
-#ifdef __WXWINCE__
-#include "wx/msw/wince/missing.h"
-#endif
-
-#if (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 )) && \
-    !defined(__CYGWIN__) && !defined(__DIGITALMARS__) && !defined(__WXWINCE__) && \
-    (!defined(_MSC_VER) || (_MSC_VER > 1100))
-    #include <shlwapi.h>
+#include "wx/msw/missing.h"
+
+// 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
+//
+// 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_*
+    };
+
+    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
 

-// NB: all "NoRedraw" classes must have the same names as the "normal" classes
-//     with NR suffix - wxWindow::MSWCreate() supposes this
-#ifdef __WXWINCE__
-      wxChar *wxCanvasClassName;
-      wxChar *wxCanvasClassNameNR;
-#else
-const wxChar *wxCanvasClassName        = wxT("wxWindowClass");
-const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
-#endif
-const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
-const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
-const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
-const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
+// because of mingw32 4.3 bug this struct can't be inside the namespace below:
+// see http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/110282
+struct ClassRegInfo
+{
+    ClassRegInfo(const wxChar *name)
+        : regname(name),
+          regnameNR(regname + wxApp::GetNoRedrawClassSuffix())
+    {
+    }
+
+    // the name of the registered class with and without CS_[HV]REDRAW styles
+    wxString regname;
+    wxString regnameNR;
+};
+
+namespace
+{
+
+wxVector<ClassRegInfo> gs_regClassesInfo;

 
 

-HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
+} // anonymous namespace

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


@@ -176,16 +202,11 @@ void *wxGUIAppTraits::BeforeChildWaitLoop()
     return new ChildWaitLoopData(wd, winActive);
 }
 
     return new ChildWaitLoopData(wd, winActive);
 }
 

-void wxGUIAppTraits::AlwaysYield()
-{
-    wxYield();
-}
-

 void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
 {
     wxEndBusyCursor();
 
 void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
 {
     wxEndBusyCursor();
 

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

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


@@ -193,351 +214,565 @@ 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;

 }
 
 }
 

+#if wxUSE_THREADS

 bool wxGUIAppTraits::DoMessageFromThreadWait()
 {
     // we should return false only if the app should exit, i.e. only if
     // Dispatch() determines that the main event loop should terminate
 bool wxGUIAppTraits::DoMessageFromThreadWait()
 {
     // we should return false only if the app should exit, i.e. only if
     // Dispatch() determines that the main event loop should terminate

-    return !wxTheApp || wxTheApp->Dispatch();
+    wxEventLoopBase * const evtLoop = wxEventLoop::GetActive();
+    if ( !evtLoop || !evtLoop->Pending() )
+    {
+        // no events means no quit event
+        return true;
+    }
+
+    return evtLoop->Dispatch();

 }
 
 }
 

-wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
+DWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread, int flags)

 {
 {

-    static wxToolkitInfo info;
-    wxToolkitInfo& baseInfo = wxAppTraits::GetToolkitInfo();
-    info.versionMajor = baseInfo.versionMajor;
-    info.versionMinor = baseInfo.versionMinor;
-    info.os = baseInfo.os;
-    info.shortName = _T("msw");
-    info.name = _T("wxMSW");
-#ifdef __WXUNIVERSAL__
-    info.shortName << _T("univ");
-    info.name << _T("/wxUniversal");
+    // We only ever dispatch messages from the main thread and, additionally,
+    // even from the main thread we shouldn't wait for the message if we don't
+    // have a running event loop as we would never remove them from the message
+    // queue then and so we would enter an infinite loop as
+    // MsgWaitForMultipleObjects() keeps returning WAIT_OBJECT_0 + 1.
+    if ( flags == wxTHREAD_WAIT_BLOCK ||
+            !wxIsMainThread() ||
+                !wxEventLoop::GetActive() )
+    {
+        // Simple blocking wait.
+        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
+             );
+}
+#endif // wxUSE_THREADS
+
+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
 #endif

-    return info;

 }
 
 }
 

-// ===========================================================================
-// wxApp implementation
-// ===========================================================================
+#if wxUSE_TIMER

 
 

-int wxApp::m_nCmdShow = SW_SHOWNORMAL;
+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()
+#if wxUSE_DYNLIB_CLASS

 
 

-// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
-// fails
-class wxCallBaseCleanup
+#include <wx/dynlib.h>
+
+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;
+    }

 
 

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

     {
     {

-        SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) );
-        return false;
+        if ( m_hStderr != INVALID_HANDLE_VALUE )
+        {
+            if ( !::FreeConsole() )
+            {
+                wxLogLastError(wxT("FreeConsole"));
+            }
+        }

     }
     }

-#endif

 
 

-    // 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 && wxGetOsVersion() != wxWINDOWS_CE )
+    // 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

     {
     {

-        // 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/CE.\nProgram aborted."),
-         _T("wxWidgets Fatal Error"),
-         MB_ICONERROR | MB_OK
-        );
-
-        return FALSE;
-    }
-#endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
+        if ( m_ok == -1 )
+        {
+            wxConsoleStderr * const self = const_cast<wxConsoleStderr *>(this);
+            self->m_ok = self->DoInit();

 
 

-#if defined(__WIN95__) && !defined(__WXMICROWIN__)
-    InitCommonControls();
-#endif // __WIN95__
+            // no need to call IsHistoryUnchanged() as we just initialized
+            // m_history anyhow
+            return m_ok == 1;
+        }

 
 

-#if wxUSE_OLE || wxUSE_DRAG_AND_DROP
+        return m_ok && IsHistoryUnchanged();
+    }

 
 

-#if wxUSE_OLE
-    // we need to initialize OLE library
-#ifdef __WXWINCE__
-    if ( FAILED(::CoInitializeEx(NULL, COINIT_MULTITHREADED)) )
-        wxLogError(_("Cannot initialize OLE"));
-#else
-    if ( FAILED(::OleInitialize(NULL)) )
-        wxLogError(_("Cannot initialize OLE"));
-#endif
-#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: wxWidgets 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

 
 

-#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    wxSetKeyboardHook(TRUE);
-#endif
+    wxCharBuffer m_data;        // data between empty line and cursor position
+    int m_dataLen;              // length data buffer
+    int m_dataLine;             // line offset

 
 

-    callBaseCleanup.Dismiss();
+    typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands,
+                                                       DWORD nBufferLength,
+                                                       LPCTSTR sExeName);
+    typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName);

 
 

-    return true;
-}
+    GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory;
+    GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength;

 
 

-// ---------------------------------------------------------------------------
-// RegisterWindowClasses
-// ---------------------------------------------------------------------------
+    wxDECLARE_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(wxT("kernel32.dll")) )
+        return false;
+
+    typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId);
+    AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32);
+
+    if ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) )
+        return false;

 
 

-    // Register the frame window class.
-    wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
-    wndclass.lpszClassName = wxCanvasClassName;
-    wndclass.style         = styleNormal;
+    // console attached, set m_hStderr now to ensure that we free it in the
+    // dtor
+    m_hStderr = hStderr;

 
 

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

     {
     {

-        wxLogLastError(wxT("RegisterClass(frame)"));
+        wxLogLastError(wxT("GetConsoleScreenBufferInfo"));
+        return false;

     }
 
     }
 

-    // "no redraw" frame
-    wndclass.lpszClassName = wxCanvasClassNameNR;
-    wndclass.style         = styleNoRedraw;
+    COORD pos;
+    pos.X = 0;
+    pos.Y = csbi.dwCursorPosition.Y + 1;
+
+    // we decide that a line is empty if first 4 characters are spaces
+    DWORD ret;
+    char buf[4];
+    do
+    {
+        pos.Y--;
+        if ( !::ReadConsoleOutputCharacterA(m_hStderr, buf, WXSIZEOF(buf),
+                                            pos, &ret) )
+        {
+            wxLogLastError(wxT("ReadConsoleOutputCharacterA"));
+            return false;
+        }
+    } while ( wxStrncmp("    ", buf, WXSIZEOF(buf)) != 0 );
+
+    // 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(no redraw frame)"));
+        m_data.extend(m_dataLen);
+        if ( !::ReadConsoleOutputCharacterA(m_hStderr, m_data.data(), m_dataLen,
+                                            pos, &ret) )
+        {
+            wxLogLastError(wxT("ReadConsoleOutputCharacterA"));
+            return false;
+        }

     }
 
     }
 

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

 
 

-    if ( !RegisterClass(&wndclass) )
+int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const
+{
+    // these functions are internal and may only be called by cmd.exe
+    static const wxChar *CMD_EXE = wxT("cmd.exe");
+
+    const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE);
+    if ( len )

     {
     {

-        wxLogLastError(wxT("RegisterClass(MDI parent)"));
+        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( wxT("failed getting history?") );
+        }

     }
 
     }
 

-    // "no redraw" MDI frame
-    wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
-    wndclass.style         = styleNoRedraw;
+    return len;
+}
+
+bool wxConsoleStderr::IsHistoryUnchanged() const
+{
+    wxASSERT_MSG( m_ok == 1, wxT("shouldn't be called if not initialized") );
+
+    // get (possibly changed) command history
+    wxWxCharBuffer history;
+    const int historyLen = GetCommandHistory(history);

 
 

-    if ( !RegisterClass(&wndclass) )
+    // and compare it with the original one
+    return historyLen == m_historyLen && history &&
+                memcmp(m_history, history, historyLen) == 0;
+}
+
+bool wxConsoleStderr::Write(const wxString& text)
+{
+    wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE,
+                    wxT("should only be called if Init() returned true") );
+
+    // get current position
+    CONSOLE_SCREEN_BUFFER_INFO csbi;
+    if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) )

     {
     {

-        wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
+        wxLogLastError(wxT("GetConsoleScreenBufferInfo"));
+        return false;

     }
 
     }
 

-    // Register the MDI child frame window class.
-    wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
-    wndclass.lpszClassName = wxMDIChildFrameClassName;
-    wndclass.style         = styleNormal;
+    // and calculate new position (where is empty line)
+    csbi.dwCursorPosition.X = 0;
+    csbi.dwCursorPosition.Y -= m_dataLine;

 
 

-    if ( !RegisterClass(&wndclass) )
+    if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) )

     {
     {

-        wxLogLastError(wxT("RegisterClass(MDI child)"));
+        wxLogLastError(wxT("SetConsoleCursorPosition"));
+        return false;

     }
 
     }
 

-    // "no redraw" MDI child frame
-    wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
-    wndclass.style         = styleNoRedraw;
+    DWORD ret;
+    if ( !::FillConsoleOutputCharacter(m_hStderr, wxT(' '), m_dataLen,
+                                       csbi.dwCursorPosition, &ret) )
+    {
+        wxLogLastError(wxT("FillConsoleOutputCharacter"));
+        return false;
+    }

 
 

-    if ( !RegisterClass(&wndclass) )
+    if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) )

     {
     {

-        wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
+        wxLogLastError(wxT("WriteConsole"));
+        return false;

     }
 
     }
 

-    return TRUE;
+    WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0);
+
+    return true;
+}
+
+wxConsoleStderr s_consoleStderr;
+
+} // anonymous namespace
+
+bool wxGUIAppTraits::CanUseStderr()
+{
+    return s_consoleStderr.IsOkToUse();

 }
 
 }
 

+bool wxGUIAppTraits::WriteToStderr(const wxString& text)
+{
+    return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text);
+}
+
+#else // !wxUSE_DYNLIB_CLASS
+
+bool wxGUIAppTraits::CanUseStderr()
+{
+    return false;
+}
+
+bool wxGUIAppTraits::WriteToStderr(const wxString& WXUNUSED(text))
+{
+    return false;
+}
+
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
+
+#endif // !__WXWINCE__
+
+// ===========================================================================
+// wxApp implementation
+// ===========================================================================
+
+int wxApp::m_nCmdShow = SW_SHOWNORMAL;
+

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

-// UnregisterWindowClasses
+// wxWin macros

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

-bool wxApp::UnregisterWindowClasses()
+IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
+
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+    EVT_IDLE(wxApp::OnIdle)
+    EVT_END_SESSION(wxApp::OnEndSession)
+    EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
+END_EVENT_TABLE()
+
+// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
+// fails
+class wxCallBaseCleanup

 {
 {

-    bool retval = TRUE;
+public:
+    wxCallBaseCleanup(wxApp *app) : m_app(app) { }
+    ~wxCallBaseCleanup() { if ( m_app ) m_app->wxAppBase::CleanUp(); }

 
 

-#ifndef __WXMICROWIN__
-    // MDI frame window class.
-    if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
-    {
-        wxLogLastError(wxT("UnregisterClass(MDI parent)"));
+    void Dismiss() { m_app = NULL; }

 
 

-        retval = FALSE;
-    }
+private:
+    wxApp *m_app;
+};

 
 

-    // "no redraw" MDI frame
-    if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
-    {
-        wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
+//// Initialize
+bool wxApp::Initialize(int& argc, wxChar **argv)
+{
+    if ( !wxAppBase::Initialize(argc, argv) )
+        return false;

 
 

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

 
 

-    // MDI child frame window class.
-    if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
-    {
-        wxLogLastError(wxT("UnregisterClass(MDI child)"));
+#if !defined(__WXMICROWIN__)
+    InitCommonControls();
+#endif // !defined(__WXMICROWIN__)

 
 

-        retval = FALSE;
-    }
+#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
+    SHInitExtraControls();
+#endif

 
 

-    // "no redraw" MDI child frame
-    if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
+#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();
+
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    wxSetKeyboardHook(true);
+#endif
+
+    callBaseCleanup.Dismiss();
+
+    return true;
+}
+
+// ---------------------------------------------------------------------------
+// Win32 window class registration
+// ---------------------------------------------------------------------------
+
+/* static */
+const wxChar *wxApp::GetRegisteredClassName(const wxChar *name,
+                                            int bgBrushCol,
+                                            int extraStyles)
+{
+    const size_t count = gs_regClassesInfo.size();
+    for ( size_t n = 0; n < count; n++ )

     {
     {

-        wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
+        if ( gs_regClassesInfo[n].regname == name )
+            return gs_regClassesInfo[n].regname.c_str();
+    }
+
+    // we need to register this class
+    WNDCLASS wndclass;
+    wxZeroMemory(wndclass);

 
 

-        retval = FALSE;
+    wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
+    wndclass.hInstance     = wxGetInstance();
+    wndclass.hCursor       = ::LoadCursor(NULL, IDC_ARROW);
+    wndclass.hbrBackground = (HBRUSH)wxUIntToPtr(bgBrushCol + 1);
+    wndclass.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | extraStyles;
+
+
+    ClassRegInfo regClass(name);
+    wndclass.lpszClassName = regClass.regname.wx_str();
+    if ( !::RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"),
+                       regClass.regname));
+        return NULL;

     }
 
     }
 

-    // canvas class name
-    if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )
+    wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
+    wndclass.lpszClassName = regClass.regnameNR.wx_str();
+    if ( !::RegisterClass(&wndclass) )

     {
     {

-        wxLogLastError(wxT("UnregisterClass(canvas)"));
+        wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"),
+                       regClass.regname));
+        ::UnregisterClass(regClass.regname.c_str(), wxGetInstance());
+        return NULL;
+    }
+
+    gs_regClassesInfo.push_back(regClass);

 
 

-        retval = FALSE;
+    // take care to return the pointer which will remain valid after the
+    // function returns (it could be invalidated later if new elements are
+    // added to the vector and it's reallocated but this shouldn't matter as
+    // this pointer should be used right now, not stored)
+    return gs_regClassesInfo.back().regname.wx_str();
+}
+
+bool wxApp::IsRegisteredClassName(const wxString& name)
+{
+    const size_t count = gs_regClassesInfo.size();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        if ( gs_regClassesInfo[n].regname == name ||
+                gs_regClassesInfo[n].regnameNR == name )
+            return true;

     }
 
     }
 

-    if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
+    return false;
+}
+
+void wxApp::UnregisterWindowClasses()
+{
+    const size_t count = gs_regClassesInfo.size();
+    for ( size_t n = 0; n < count; n++ )

     {
     {

-        wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
+        const ClassRegInfo& regClass = gs_regClassesInfo[n];
+        if ( !::UnregisterClass(regClass.regname.c_str(), wxGetInstance()) )
+        {
+            wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"),
+                           regClass.regname));
+        }

 
 

-        retval = FALSE;
+        if ( !::UnregisterClass(regClass.regnameNR.c_str(), wxGetInstance()) )
+        {
+            wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"),
+                           regClass.regnameNR));
+        }

     }
     }

-#endif // __WXMICROWIN__

 
 

-    return retval;
+    gs_regClassesInfo.clear();

 }
 
 void wxApp::CleanUp()
 {
 }
 
 void wxApp::CleanUp()
 {

-    // all objects pending for deletion must be deleted first, otherwise we
-    // would crash when they use wxWinHandleHash (and UnregisterWindowClasses()
-    // call wouldn't succeed as long as any windows still exist), so call the
-    // base class method first and only then do our clean up
+    // 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();
 
 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
     wxAppBase::CleanUp();
 
 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)

-    wxSetKeyboardHook(FALSE);
-#endif
-
-#if wxUSE_PENWINDOWS
-    wxCleanUpPenWin();
+    wxSetKeyboardHook(false);

 #endif
 
 #endif
 

-    if ( wxDisableButtonBrush )
-        ::DeleteObject( wxDisableButtonBrush );
-
-#if wxUSE_OLE
-#ifdef __WXWINCE__
-    ::CoUninitialize();
-#else
-    ::OleUninitialize();
-#endif
-#endif
+    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();
 
     // 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();

-
-#if wxUSE_CTL3D
-    Ctl3dUnregister(wxhInstance);
-#endif
-
-    delete wxWinHandleHash;
-    wxWinHandleHash = NULL;
-    
-#ifdef __WXWINCE__
-    free( wxCanvasClassName );
-    free( wxCanvasClassNameNR );
-#endif

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -551,33 +786,20 @@ wxApp::wxApp()
 
 wxApp::~wxApp()
 {
 
 wxApp::~wxApp()
 {

-    // our cmd line arguments are allocated inside wxEntry(HINSTANCE), they
-    // don't come from main(), so we have to free them
-
-    while ( argc )
-    {
-        // m_argv elements were allocated by wxStrdup()
-        free(argv[--argc]);
-    }
-
-    // but m_argv itself -- using new[]
-    delete [] argv;

 }
 
 // ----------------------------------------------------------------------------
 // wxApp idle handling
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // wxApp idle handling
 // ----------------------------------------------------------------------------
 

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

 {
 {

-    wxAppBase::OnIdle(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
 }
 


@@ -587,15 +809,34 @@ 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)"));
+            }

         }
     }
         }
     }

+#if wxUSE_THREADS
+    else
+        wxWakeUpMainThread();
+#endif // wxUSE_THREADS

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -604,8 +845,24 @@ void wxApp::WakeUpIdle()
 
 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


@@ -615,21 +872,50 @@ 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);

     }
 }
 
 // ----------------------------------------------------------------------------
     }
 }
 
 // ----------------------------------------------------------------------------

-// miscellaneous
+// system DLL versions

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

+// these functions have trivial inline implementations for CE
+#ifndef __WXWINCE__
+
+#if wxUSE_DYNLIB_CLASS
+
+namespace
+{
+
+// 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(wxT("DllGetVersion"), hr);
+
+        return 0;
+    }
+
+    return 100*dvi.dwMajorVersion + dvi.dwMinorVersion;
+}
+
+} // anonymous namespace
+

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

-//FIX ME FOR DIGITALMARS!!
-#if defined(__WXMICROWIN__) || defined(__WXWINCE__) || defined(__DIGITALMARS__)
-    return 0;
-#else

     // cache the result
     //
     // NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice,
     // cache the result
     //
     // NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice,


@@ -638,128 +924,104 @@ int wxApp::GetComCtl32Version()
 
     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;
 
         // we're prepared to handle the errors
         wxLogNull noLog;
 

-        // do we have it?
-        wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM);
+        // we don't want to load comctl32.dll, it should be already loaded but,
+        // depending on the OS version and the presence of the manifest, it can
+        // be either v5 or v6 and instead of trying to guess it just get the
+        // handle of the already loaded version
+        wxLoadedDLL dllComCtl32(wxT("comctl32.dll"));
+        if ( !dllComCtl32.IsLoaded() )
+        {
+            s_verComCtl32 = 0;
+            return 0;
+        }
+
+        // try DllGetVersion() for recent DLLs
+        s_verComCtl32 = CallDllGetVersion(dllComCtl32);

 
 

-        // if so, then we can check for the version
-        if ( dllComCtl32.IsLoaded() )
+        // if DllGetVersion() is unavailable either during compile or
+        // run-time, try to guess the version otherwise
+        if ( !s_verComCtl32 )

         {
         {

-#ifdef DLLVER_PLATFORM_WINDOWS
-            // try to use DllGetVersion() if available in _headers_
-            wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dllComCtl32 );
-            if ( pfnDllGetVersion )
+            // InitCommonControlsEx is unique to 4.70 and later
+            void *pfn = dllComCtl32.GetSymbol(wxT("InitCommonControlsEx"));
+            if ( !pfn )

             {
             {

-                DLLVERSIONINFO 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 4.00
+                s_verComCtl32 = 400;

             }
             }

-#endif
-
-            // if DllGetVersion() is unavailable either during compile or
-            // run-time, try to guess the version otherwise
-            if ( !s_verComCtl32 )
+            else // 4.70+

             {
             {

-                // InitCommonControlsEx is unique to 4.70 and later
-                void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx"));
+                // many symbols appeared in comctl32 4.71, could use any of
+                // them except may be DllInstall()
+                pfn = dllComCtl32.GetSymbol(wxT("InitializeFlatSB"));

                 if ( !pfn )
                 {
                 if ( !pfn )
                 {

-                    // not found, must be 4.00
-                    s_verComCtl32 = 400;
+                    // not found, must be 4.70
+                    s_verComCtl32 = 470;

                 }
                 }

-                else // 4.70+
+                else

                 {
                 {

-                    // many symbols appeared in comctl32 4.71, could use any of
-                    // them except may be DllInstall()
-                    pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB"));
-                    if ( !pfn )
-                    {
-                        // not found, must be 4.70
-                        s_verComCtl32 = 470;
-                    }
-                    else
-                    {
-                        // found, must be 4.71 or later
-                        s_verComCtl32 = 471;
-                    }
+                    // found, must be 4.71 or later
+                    s_verComCtl32 = 471;

                 }
             }
         }
     }
 
     return s_verComCtl32;
                 }
             }
         }
     }
 
     return s_verComCtl32;

-#endif // Microwin/!Microwin

 }
 
 }
 

-// Yield to incoming messages
-
-bool wxApp::Yield(bool onlyIfNeeded)
+/* static */
+int wxApp::GetShell32Version()

 {
 {

-    // MT-FIXME
-    static bool s_inYield = FALSE;
+    static int s_verShell32 = -1;
+    if ( s_verShell32 == -1 )
+    {
+        // we're prepared to handle the errors
+        wxLogNull noLog;

 
 

-#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
+        wxDynamicLibrary dllShell32(wxT("shell32.dll"), wxDL_VERBATIM);
+        if ( dllShell32.IsLoaded() )
+        {
+            s_verShell32 = CallDllGetVersion(dllShell32);

 
 

-    if ( s_inYield )
-    {
-        if ( !onlyIfNeeded )
+            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?

         {
         {

-            wxFAIL_MSG( wxT("wxYield called recursively" ) );
+            s_verShell32 = 0;

         }
         }

-
-        return FALSE;

     }
 
     }
 

-    s_inYield = TRUE;
-
-    // we don't want to process WM_QUIT from here - it should be processed in
-    // the main event loop in order to stop it
-    MSG msg;
-    while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
-            msg.message != WM_QUIT )
-    {
-#if wxUSE_THREADS
-        wxMutexGuiLeaveOrEnter();
-#endif // wxUSE_THREADS
+    return s_verShell32;
+}

 
 

-        if ( !wxTheApp->Dispatch() )
-            break;
-    }
+#else // !wxUSE_DYNLIB_CLASS

 
 

-    // if there are pending events, we must process them.
-    ProcessPendingEvents();
+/* static */
+int wxApp::GetComCtl32Version()
+{
+    return 0;
+}

 
 

-#if wxUSE_LOG
-    // let the logs be flashed again
-    wxLog::Resume();
-#endif // wxUSE_LOG
+/* static */
+int wxApp::GetShell32Version()
+{
+    return 0;
+}

 
 

-    s_inYield = FALSE;
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS

 
 

-    return TRUE;
-}
+#endif // !__WXWINCE__

 
 #if wxUSE_EXCEPTIONS
 
 
 #if wxUSE_EXCEPTIONS
 


@@ -775,12 +1037,12 @@ bool wxApp::OnExceptionInMainLoop()
             ::MessageBox
               (
                 NULL,
             ::MessageBox
               (
                 NULL,

-                _T("An unhandled exception occurred. Press \"Abort\" to \
+                wxT("An unhandled exception occurred. Press \"Abort\" to \

 terminate the program,\r\n\
 \"Retry\" to exit the program normally and \"Ignore\" to try to continue."),
 terminate the program,\r\n\
 \"Retry\" to exit the program normally and \"Ignore\" to try to continue."),

-                _T("Unhandled exception"),
+                wxT("Unhandled exception"),

                 MB_ABORTRETRYIGNORE |
                 MB_ABORTRETRYIGNORE |

-                MB_ICONERROR| 
+                MB_ICONERROR|

                 MB_TASKMODAL
               )
            )
                 MB_TASKMODAL
               )
            )


@@ -789,7 +1051,7 @@ terminate the program,\r\n\
             throw;
 
         default:
             throw;
 
         default:

-            wxFAIL_MSG( _T("unexpected MessageBox() return code") );
+            wxFAIL_MSG( wxT("unexpected MessageBox() return code") );

             // fall through
 
         case IDRETRY:
             // fall through
 
         case IDRETRY: