X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d0e278d98e9ecc0f78943a662fca855811f3bea7..9d5507f7a2701395e1d5c121bd877bb9066ee6ea:/src/msw/app.cpp

diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index 2b69e91300..ef5379e82b 100644
--- 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:
@@ -17,10 +17,6 @@
 // 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"
 
@@ -29,6 +25,8 @@
 #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"
@@ -42,18 +40,20 @@
     #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/module.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/msw/private.h"
+#include "wx/msw/ole/oleutils.h"
+#include "wx/msw/private/timer.h"
 
 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"
@@ -67,6 +67,11 @@
     #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
@@ -74,34 +79,51 @@
 #include <string.h>
 #include <ctype.h>
 
-#include "wx/msw/wrapcctl.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)
 
-#if (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 )) && \
-    !defined(__CYGWIN__) && !defined(__DIGITALMARS__) && !defined(__WXWINCE__) && \
-    (!defined(_MSC_VER) || (_MSC_VER > 1100))
-    #include <shlwapi.h>
-#endif
 
 // ---------------------------------------------------------------------------
 // global variables
 // ---------------------------------------------------------------------------
 
-extern wxList WXDLLEXPORT wxPendingDelete;
-
 #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
-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        = wxT("wxWindowClass");
+WXDLLIMPEXP_CORE const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
+#endif
+WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
+WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
+WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
+WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 
 // ----------------------------------------------------------------------------
 // private functions
@@ -175,7 +197,7 @@ void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
 {
     wxEndBusyCursor();
 
-    const ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;
+    ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;
 
     delete data->wd;
 
@@ -183,29 +205,80 @@ 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();
+
+    // also delete the temporary data object itself
+    delete data;
 }
 
 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)
 {
-    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");
+    // 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
+             );
+}
+
+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
-    return info;
+}
+
+#if wxUSE_TIMER
+
+wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
+{
+    return new wxMSWTimerImpl(timer);
+}
+
+#endif // wxUSE_TIMER
+
+wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
+{
+    return new wxEventLoop;
 }
 
 // ===========================================================================
@@ -249,92 +322,42 @@ bool wxApp::Initialize(int& argc, wxChar **argv)
     // ensure that base cleanup is done if we return too early
     wxCallBaseCleanup callBaseCleanup(this);
 
-    // 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 )
+#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)
     {
-        // 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("wxWindows Fatal Error"),
-         MB_ICONERROR | MB_OK
-        );
-
-        return FALSE;
+        SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) );
+        return false;
     }
-#endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
+#endif
 
-#if defined(__WIN95__) && !defined(__WXMICROWIN__)
+#if !defined(__WXMICROWIN__)
     InitCommonControls();
-#endif // __WIN95__
-
-#if wxUSE_OLE || wxUSE_DRAG_AND_DROP
-
-#ifdef __WIN16__
-    // for OLE, enlarge message queue to be as large as possible
-    int iMsg = 96;
-    while (!SetMessageQueue(iMsg) && (iMsg -= 8))
-        ;
-#endif // Win16
+#endif // !defined(__WXMICROWIN__)
 
-#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"));
+#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
+    SHInitExtraControls();
 #endif
-#endif
-
-#endif // wxUSE_OLE
 
-#if wxUSE_CTL3D
-    if (!Ctl3dRegister(wxhInstance))
-        wxLogError(wxT("Cannot register CTL3D"));
+#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
 
-    Ctl3dAutoSubclass(wxhInstance);
-#endif // wxUSE_CTL3D
+    wxOleInitialize();
 
     RegisterWindowClasses();
 
-#if defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    // Create the brush for disabling bitmap buttons
-
-    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
-
-#if wxUSE_PENWINDOWS
-    wxRegisterPenWin();
-#endif
-
     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 
-    // 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
-
 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    wxSetKeyboardHook(TRUE);
+    wxSetKeyboardHook(true);
 #endif
 
     callBaseCleanup.Dismiss();
@@ -364,8 +387,8 @@ bool wxApp::RegisterWindowClasses()
     wndclass.hInstance     = wxhInstance;
     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 
-    // Register the frame window class.
-    wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
+    // register the class for all normal windows
+    wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
     wndclass.lpszClassName = wxCanvasClassName;
     wndclass.style         = styleNormal;
 
@@ -421,7 +444,7 @@ bool wxApp::RegisterWindowClasses()
         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
     }
 
-    return TRUE;
+    return true;
 }
 
 // ---------------------------------------------------------------------------
@@ -430,7 +453,7 @@ bool wxApp::RegisterWindowClasses()
 
 bool wxApp::UnregisterWindowClasses()
 {
-    bool retval = TRUE;
+    bool retval = true;
 
 #ifndef __WXMICROWIN__
     // MDI frame window class.
@@ -438,7 +461,7 @@ bool wxApp::UnregisterWindowClasses()
     {
         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 
-        retval = FALSE;
+        retval = false;
     }
 
     // "no redraw" MDI frame
@@ -446,7 +469,7 @@ bool wxApp::UnregisterWindowClasses()
     {
         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 
-        retval = FALSE;
+        retval = false;
     }
 
     // MDI child frame window class.
@@ -454,7 +477,7 @@ bool wxApp::UnregisterWindowClasses()
     {
         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 
-        retval = FALSE;
+        retval = false;
     }
 
     // "no redraw" MDI child frame
@@ -462,7 +485,7 @@ bool wxApp::UnregisterWindowClasses()
     {
         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 
-        retval = FALSE;
+        retval = false;
     }
 
     // canvas class name
@@ -470,14 +493,14 @@ bool wxApp::UnregisterWindowClasses()
     {
         wxLogLastError(wxT("UnregisterClass(canvas)"));
 
-        retval = FALSE;
+        retval = false;
     }
 
     if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
     {
         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 
-        retval = FALSE;
+        retval = false;
     }
 #endif // __WXMICROWIN__
 
@@ -486,24 +509,17 @@ bool wxApp::UnregisterWindowClasses()
 
 void wxApp::CleanUp()
 {
-#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-    wxSetKeyboardHook(FALSE);
-#endif
+    // 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
+    wxAppBase::CleanUp();
 
-#if wxUSE_PENWINDOWS
-    wxCleanUpPenWin();
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    wxSetKeyboardHook(false);
 #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
@@ -511,14 +527,13 @@ void wxApp::CleanUp()
     // unregister the classes now
     UnregisterWindowClasses();
 
-#if wxUSE_CTL3D
-    Ctl3dUnregister(wxhInstance);
-#endif
-
     delete wxWinHandleHash;
     wxWinHandleHash = NULL;
 
-    wxAppBase::CleanUp();
+#ifdef __WXWINCE__
+    free( wxCanvasClassName );
+    free( wxCanvasClassNameNR );
+#endif
 }
 
 // ----------------------------------------------------------------------------
@@ -532,41 +547,20 @@ 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;
 }
 
-bool wxApp::Initialized()
-{
-#ifndef _WINDLL
-    if (GetTopWindow())
-        return TRUE;
-    else
-        return FALSE;
-#else // Assume initialized if DLL (no way of telling)
-    return TRUE;
-#endif
-}
+// ----------------------------------------------------------------------------
+// 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))
-        wxDC::ClearCache();
+        wxMSWDCImpl::ClearCache();
 #endif // wxUSE_DC_CACHEING
 }
 
@@ -587,10 +581,14 @@ void wxApp::WakeUpIdle()
     }
 }
 
+// ----------------------------------------------------------------------------
+// other wxApp event hanlders
+// ----------------------------------------------------------------------------
+
 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
 {
     if (GetTopWindow())
-        GetTopWindow()->Close(TRUE);
+        GetTopWindow()->Close(true);
 }
 
 // Default behaviour: close the application with prompts. The
@@ -600,17 +598,47 @@ void wxApp::OnQueryEndSession(wxCloseEvent& event)
     if (GetTopWindow())
     {
         if (!GetTopWindow()->Close(!event.CanVeto()))
-            event.Veto(TRUE);
+            event.Veto(true);
     }
 }
 
+// ----------------------------------------------------------------------------
+// system DLL versions
+// ----------------------------------------------------------------------------
+
+#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(_T("DllGetVersion"), hr);
+
+        return 0;
+    }
+
+    return 100*dvi.dwMajorVersion + dvi.dwMinorVersion;
+}
+
+} // anonymous namespace
+
 /* 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,
@@ -619,83 +647,108 @@ int wxApp::GetComCtl32Version()
 
     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?
+        // the DLL should really be available
         wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM);
+        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(_T("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(_T("InitializeFlatSB"));
                 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;
-#endif // Microwin/!Microwin
 }
 
+/* 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() )
+        {
+            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_verShell32;
+}
+
+#else // !wxUSE_DYNLIB_CLASS
+
+/* static */
+int wxApp::GetComCtl32Version()
+{
+    return 0;
+}
+
+/* static */
+int wxApp::GetShell32Version()
+{
+    return 0;
+}
+
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
+
+// ----------------------------------------------------------------------------
 // Yield to incoming messages
+// ----------------------------------------------------------------------------
 
 bool wxApp::Yield(bool onlyIfNeeded)
 {
     // MT-FIXME
-    static bool s_inYield = FALSE;
+    static bool s_inYield = false;
 
 #if wxUSE_LOG
     // disable log flushing from here because a call to wxYield() shouldn't
@@ -710,10 +763,10 @@ bool wxApp::Yield(bool onlyIfNeeded)
             wxFAIL_MSG( wxT("wxYield called recursively" ) );
         }
 
-        return FALSE;
+        return false;
     }
 
-    s_inYield = TRUE;
+    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
@@ -737,8 +790,48 @@ bool wxApp::Yield(bool onlyIfNeeded)
     wxLog::Resume();
 #endif // wxUSE_LOG
 
-    s_inYield = FALSE;
+    s_inYield = false;
+
+    return true;
+}
+
+#if wxUSE_EXCEPTIONS
+
+// ----------------------------------------------------------------------------
+// exception handling
+// ----------------------------------------------------------------------------
+
+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;
+
+        default:
+            wxFAIL_MSG( _T("unexpected MessageBox() return code") );
+            // fall through
 
-    return TRUE;
+        case IDRETRY:
+            return false;
+
+        case IDIGNORE:
+            return true;
+    }
 }
 
+#endif // wxUSE_EXCEPTIONS