check that the version of __sync_sub_and_fetch that returns a value is supported...

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

diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index e7a3e6210bb106b4f5cbc6a14efffdfa9b04022d..ef5379e82b6e03d39e20da5fa3b8673dd571fb74 100644 (file)
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -1,992 +1,837 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

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

-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:     wxWindows license
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-  #pragma implementation "app.h"
-#endif
+// ===========================================================================
+// declarations
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// headers
+// ---------------------------------------------------------------------------

 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #if defined(__BORLANDC__)
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #if defined(__BORLANDC__)

-  #pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

-  #include "wx/frame.h"
-  #include "wx/app.h"
-  #include "wx/utils.h"
-  #include "wx/gdicmn.h"
-  #include "wx/pen.h"
-  #include "wx/brush.h"
-  #include "wx/cursor.h"
-  #include "wx/icon.h"
-  #include "wx/palette.h"
-  #include "wx/dc.h"
-  #include "wx/dialog.h"
-  #include "wx/msgdlg.h"
+    #include "wx/msw/wrapcctl.h"
+    #include "wx/dynarray.h"
+    #include "wx/frame.h"
+    #include "wx/app.h"
+    #include "wx/utils.h"
+    #include "wx/gdicmn.h"
+    #include "wx/pen.h"
+    #include "wx/brush.h"
+    #include "wx/cursor.h"
+    #include "wx/icon.h"
+    #include "wx/palette.h"
+    #include "wx/dc.h"
+    #include "wx/dialog.h"
+    #include "wx/msgdlg.h"
+    #include "wx/intl.h"
+    #include "wx/crt.h"
+    #include "wx/log.h"
+    #include "wx/module.h"

 #endif
 
 #endif
 

-#include "wx/msw/private.h"
-#include "wx/postscrp.h"
-#include "wx/log.h"
-#include "wx/module.h"
+#include "wx/apptrait.h"
+#include "wx/filename.h"
+#include "wx/dynlib.h"
+#include "wx/evtloop.h"
+#include "wx/thread.h"

 
 

-#if USE_WX_RESOURCES
-  #include "wx/resource.h"
-#endif
+#include "wx/msw/private.h"
+#include "wx/msw/ole/oleutils.h"
+#include "wx/msw/private/timer.h"

 
 

-#include <string.h>
-#include <ctype.h>
+#if wxUSE_TOOLTIPS
+    #include "wx/tooltip.h"
+#endif // wxUSE_TOOLTIPS

 
 

-#if defined(__WIN95__) && !defined(__GNUWIN32__)
-  #include <commctrl.h>
-#endif
+// 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__)
+    #undef wxUSE_OLE

 
 

-// use debug CRT functions for memory leak detections in VC++
-#if defined(__WXDEBUG__) && defined(_MSC_VER)
-  // VC++ uses this macro as debug/release mode indicator
-  #ifndef _DEBUG
-    #define _DEBUG
-  #endif
+    #define  wxUSE_OLE 0
+#endif // broken compilers

 
 

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

 #endif
 
 #endif
 

-extern char *wxBuffer;
-extern char *wxOsVersion;
-extern wxList *wxWinHandleList;
-extern wxList wxPendingDelete;
-extern void wxSetKeyboardHook(bool doIt);
-extern wxCursor *g_globalCursor;
-
-HINSTANCE wxhInstance = 0;
-static MSG s_currentMsg;
-wxApp *wxTheApp = NULL;
+#if wxUSE_OLE
+    #include <ole2.h>
+#endif

 
 

-// @@ why not const? and not static?
-char wxFrameClassName[]         = "wxFrameClass";
-char wxMDIFrameClassName[]      = "wxMDIFrameClass";
-char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
-char wxPanelClassName[]         = "wxPanelClass";
-char wxCanvasClassName[]        = "wxCanvasClass";
+#include <string.h>
+#include <ctype.h>

 
 

-HICON wxSTD_FRAME_ICON = NULL;
-HICON wxSTD_MDICHILDFRAME_ICON = NULL;
-HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
+#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_*
+    };

 
 

-HICON wxDEFAULT_FRAME_ICON = NULL;
-HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
-HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
+    typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *);
+#endif // defined(DLLVERSIONINFO)

 
 

-HBRUSH wxDisableButtonBrush = 0;

 
 

-LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
+// ---------------------------------------------------------------------------
+// global variables
+// ---------------------------------------------------------------------------

 
 

-#if !USE_SHARED_LIBRARY
-  IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+extern void wxSetKeyboardHook(bool doIt);
+#endif

 
 

-  BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
-      EVT_IDLE(wxApp::OnIdle)
-  END_EVENT_TABLE()
+// NB: all "NoRedraw" classes must have the same names as the "normal" classes
+//     with NR suffix - wxWindow::MSWCreate() supposes this
+#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
 #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");

 
 

-long wxApp::sm_lastMessageTime = 0;
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------

 
 

-#ifdef __WIN95__
-  static HINSTANCE gs_hRichEdit = NULL;
-#endif
+LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);

 
 

-//// Initialize
+// ===========================================================================
+// wxGUIAppTraits implementation
+// ===========================================================================

 
 

-bool wxApp::Initialize()
+// private class which we use to pass parameters from BeforeChildWaitLoop() to
+// AfterChildWaitLoop()
+struct ChildWaitLoopData

 {
 {

-  wxBuffer = new char[1500];
+    ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_)
+    {
+        wd = wd_;
+        winActive = winActive_;
+    }

 
 

-  #if defined(__WXDEBUG__) && defined(_MSC_VER)
-    // do check for memory leaks on program exit
-    // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
-    //  deallocated memory which may be used to simulate low-memory condition)
-    _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
-  #endif // debug build under MS VC++
+    wxWindowDisabler *wd;
+    wxWindow *winActive;
+};

 
 

-  #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
-    #if defined(_WINDLL)
-      streambuf* sBuf = NULL;
-    #else  // EXE
-      streambuf* sBuf = new wxDebugStreamBuf;
-    #endif // DLL
+void *wxGUIAppTraits::BeforeChildWaitLoop()
+{
+    /*
+       We use a dirty hack here to disable all application windows (which we
+       must do because otherwise the calls to wxYield() could lead to some very
+       unexpected reentrancies in the users code) but to avoid losing
+       focus/activation entirely when the child process terminates which would
+       happen if we simply disabled everything using wxWindowDisabler. Indeed,
+       remember that Windows will never activate a disabled window and when the
+       last childs window is closed and Windows looks for a window to activate
+       all our windows are still disabled. There is no way to enable them in
+       time because we don't know when the childs windows are going to be
+       closed, so the solution we use here is to keep one special tiny frame
+       enabled all the time. Then when the child terminates it will get
+       activated and when we close it below -- after reenabling all the other
+       windows! -- the previously active window becomes activated again and
+       everything is ok.
+     */
+    wxBeginBusyCursor();
+
+    // first disable all existing windows
+    wxWindowDisabler *wd = new wxWindowDisabler;
+
+    // then create an "invisible" frame: it has minimal size, is positioned
+    // (hopefully) outside the screen and doesn't appear on the taskbar
+    wxWindow *winActive = new wxFrame
+                    (
+                        wxTheApp->GetTopWindow(),
+                        wxID_ANY,
+                        wxEmptyString,
+                        wxPoint(32600, 32600),
+                        wxSize(1, 1),
+                        wxDEFAULT_FRAME_STYLE | wxFRAME_NO_TASKBAR
+                    );
+    winActive->Show();
+
+    return new ChildWaitLoopData(wd, winActive);
+}

 
 

-    ostream* oStr = new ostream(sBuf) ;
-    wxDebugContext::SetStream(oStr, sBuf);
-  #endif  // USE_MEMORY_TRACING
+void wxGUIAppTraits::AlwaysYield()
+{
+    wxYield();
+}

 
 

-  wxClassInfo::InitializeClasses();
+void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
+{
+    wxEndBusyCursor();

 
 

-  #if USE_RESOURCES
-    wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
-  #endif
+    ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;

 
 

-  wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
-  wxTheColourDatabase->Initialize();
+    delete data->wd;

 
 

-  wxInitializeStockLists();
-  wxInitializeStockObjects();
+    // finally delete the dummy frame and, as wd has been already destroyed and
+    // the other windows reenabled, the activation is going to return to the
+    // window which had had it before
+    data->winActive->Destroy();

 
 

-  #if USE_WX_RESOURCES
-    wxInitializeResourceSystem();
-  #endif
+    // also delete the temporary data object itself
+    delete data;
+}

 
 

-  // For PostScript printing
-  #if USE_POSTSCRIPT
-    wxInitializePrintSetupData();
-    wxThePrintPaperDatabase = new wxPrintPaperDatabase;
-    wxThePrintPaperDatabase->CreateDatabase();
-  #endif
+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
+    wxEventLoopBase * const evtLoop = wxEventLoop::GetActive();
+    if ( !evtLoop || !evtLoop->Pending() )
+    {
+        // no events means no quit event
+        return true;
+    }

 
 

-  wxBitmap::InitStandardHandlers();
+    return evtLoop->Dispatch();
+}

 
 

-  #if defined(__WIN95__)
-    InitCommonControls();
-    gs_hRichEdit = LoadLibrary("RICHED32.DLL");
+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
+             );
+}

 
 

-    if (gs_hRichEdit == NULL)
+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) )

     {
     {

-      wxMessageBox("Could not initialise Rich Edit DLL");
+        if ( majVer )
+            *majVer = info.dwMajorVersion;
+        if ( minVer )
+            *minVer = info.dwMinorVersion;

     }
     }

-  #endif
-
-  #if  defined(WX_DRAG_DROP)
-    // we need to initialize OLE library
-    if ( FAILED(::OleInitialize(NULL)) )
-      wxFatalError(_("Cannot initialize OLE"));
-  #endif
-
-  #if CTL3D
-    if (!Ctl3dRegister(wxhInstance))
-      wxFatalError("Cannot register CTL3D");

 
 

-    Ctl3dAutoSubclass(wxhInstance);
-  #endif
+#if defined(__WXHANDHELD__) || defined(__WXWINCE__)
+    return wxPORT_WINCE;
+#else
+    return wxPORT_MSW;
+#endif
+}

 
 

-  g_globalCursor = new wxCursor;
+#if wxUSE_TIMER

 
 

-  wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
-  wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
-  wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
+wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
+{
+    return new wxMSWTimerImpl(timer);
+}

 
 

-  wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
-  wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
-  wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
+#endif // wxUSE_TIMER

 
 

-  RegisterWindowClasses();
+wxEventLoopBase* wxGUIAppTraits::CreateEventLoop()
+{
+    return new wxEventLoop;
+}

 
 

-  // Create the brush for disabling bitmap buttons
+// ===========================================================================
+// wxApp implementation
+// ===========================================================================

 
 

-  LOGBRUSH lb ;
-  lb.lbStyle = BS_PATTERN;
-  lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
-  wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
-  ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
+int wxApp::m_nCmdShow = SW_SHOWNORMAL;

 
 

-  #if USE_PENWINDOWS
-    wxRegisterPenWin();
-  #endif
+// ---------------------------------------------------------------------------
+// wxWin macros
+// ---------------------------------------------------------------------------

 
 

-  wxWinHandleList = new wxList(wxKEY_INTEGER);
+IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)

 
 

-  // This is to foil optimizations in Visual C++ that
-  // throw out dummy.obj.
-  #if (_MSC_VER >= 800) && !defined(WXMAKINGDLL)
-    extern char wxDummyChar;
-    if (wxDummyChar) wxDummyChar++;
-  #endif
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+    EVT_IDLE(wxApp::OnIdle)
+    EVT_END_SESSION(wxApp::OnEndSession)
+    EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
+END_EVENT_TABLE()

 
 

-  wxSetKeyboardHook(TRUE);
+// 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(); }

 
 

-  wxModule::RegisterModules();
-  if (!wxModule::InitializeModules())
-    return FALSE;
-  return TRUE;
-}
+    void Dismiss() { m_app = NULL; }

 
 

-//// RegisterWindowClasses
+private:
+    wxApp *m_app;
+};

 
 

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

 {
 {

-///////////////////////////////////////////////////////////////////////
-// Register the frame window class.
-  WNDCLASS wndclass;   // Structure used to register Windows class.
-
-  wndclass.style         = CS_HREDRAW | CS_VREDRAW;
-  wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
-  wndclass.cbClsExtra    = 0;
-  wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
-  wndclass.hInstance     = wxhInstance;
-  wndclass.hIcon         = NULL;        // wxSTD_FRAME_ICON;
-  wndclass.hCursor       = LoadCursor( NULL, IDC_ARROW );
-  wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
-//  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
-  wndclass.lpszMenuName  = NULL;
-#ifdef _MULTIPLE_INSTANCES
-  sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
+    if ( !wxAppBase::Initialize(argc, argv) )
+        return false;
+
+    // ensure that base cleanup is done if we return too early
+    wxCallBaseCleanup callBaseCleanup(this);
+
+#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)
+    {
+        SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) );
+        return false;
+    }

 #endif
 #endif

-  wndclass.lpszClassName = wxFrameClassName;
-
-  if (!RegisterClass( &wndclass ))
-  {
-    // wxFatalError("Can't register Frame Window class");
-  }
-
-///////////////////////////////////////////////////////////////////////
-// Register the MDI frame window class.
-  WNDCLASS wndclass1;   // Structure used to register Windows class.
-
-  wndclass1.style         = CS_HREDRAW | CS_VREDRAW;
-  wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
-  wndclass1.cbClsExtra    = 0;
-  wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
-  wndclass1.hInstance     = wxhInstance;
-  wndclass1.hIcon         = NULL; // wxSTD_MDIPARENTFRAME_ICON;
-  wndclass1.hCursor       = LoadCursor( NULL, IDC_ARROW );
-//  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
-  wndclass1.hbrBackground = NULL;
-  wndclass1.lpszMenuName  = NULL;
-
-  wndclass1.lpszClassName = wxMDIFrameClassName;
-  if (!RegisterClass( &wndclass1 ))
-  {
-//    wxFatalError("Can't register MDI Frame window class");
-//  return FALSE;
-  }
-
-///////////////////////////////////////////////////////////////////////
-// Register the MDI child frame window class.
-  WNDCLASS wndclass4;   // Structure used to register Windows class.
-
-  wndclass4.style         = CS_HREDRAW | CS_VREDRAW;
-  wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
-  wndclass4.cbClsExtra    = 0;
-  wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
-  wndclass4.hInstance     = wxhInstance;
-  wndclass4.hIcon         = NULL;       // wxSTD_MDICHILDFRAME_ICON;
-  wndclass4.hCursor       = LoadCursor( NULL, IDC_ARROW );
-  // TODO: perhaps this should be NULL so that Windows doesn't
-  // paint the background itself (would OnEraseBackground duplicate
-  // this?)
-  wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
-//  wndclass4.hbrBackground = NULL;
-  wndclass4.lpszMenuName  = NULL;
-  wndclass4.lpszClassName = wxMDIChildFrameClassName;
-
-  if (!RegisterClass( &wndclass4 ))
-  {
-//   wxFatalError("Can't register MDI child frame window class");
-//   return FALSE;
-  }
-
-///////////////////////////////////////////////////////////////////////
-// Register the panel window class.
-  WNDCLASS wndclass2;   // Structure used to register Windows class.
-  memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
-  // Use CS_OWNDC to avoid messing about restoring the context
-  // for every graphic operation.
-  wndclass2.style         = CS_HREDRAW | CS_VREDRAW;
-  wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
-  wndclass2.cbClsExtra    = 0;
-  wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
-  wndclass2.hInstance     = wxhInstance;
-  wndclass2.hIcon         = NULL;
-  wndclass2.hCursor       = NULL;
-//  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
-  wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
-  wndclass2.lpszMenuName  = NULL;
-  wndclass2.lpszClassName = wxPanelClassName;
-  if (!RegisterClass( &wndclass2 ))
-  {
-//   wxFatalError("Can't register Panel Window class");
-//   return FALSE;
-  }
-
-///////////////////////////////////////////////////////////////////////
-// Register the canvas and textsubwindow class name
-  WNDCLASS wndclass3;   // Structure used to register Windows class.
-  memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
-  // Use CS_OWNDC to avoid messing about restoring the context
-  // for every graphic operation.
-//  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
-  // wxWin 2.0
-  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
-  wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
-  wndclass3.cbClsExtra    = 0;
-  wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
-  wndclass3.hInstance     = wxhInstance;
-  wndclass3.hIcon         = NULL;
-  wndclass3.hCursor       = NULL;
-//  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
-  wndclass3.hbrBackground = NULL;
-  wndclass3.lpszMenuName  = NULL;
-  wndclass3.lpszClassName = wxCanvasClassName;
-  if (!RegisterClass( &wndclass3))
-  {
-//   wxFatalError("Can't register Canvas class");
-//   return FALSE;
-  }
-
-  return TRUE;
-}

 
 

-//// Convert Windows to argc, argv style
+#if !defined(__WXMICROWIN__)
+    InitCommonControls();
+#endif // !defined(__WXMICROWIN__)

 
 

-// FIXME this code should be rewritten (use wxArrayString instead...)
-void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
-{
-  // Split command line into tokens, as in usual main(argc, argv)
-  char **command = new char*[50]; // VZ: sure? why not 25 or 73 and a half??
-
-  int count = 0;
-  char *buf = new char[strlen(lpCmdLine) + 1];
-
-  /* Model independent strcpy */
-  int i;
-  for (i = 0; (buf[i] = lpCmdLine[i]) != 0; i++)
-  {
-    /* loop */;
-  }
-
-  // Get application name
-  char name[260]; // 260 is MAX_PATH value from windef.h
-  ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
-
-  // Is it only 16-bit Borland that already copies the program name
-  // to the first argv index?
-#if !defined(__GNUWIN32__)
-// #if ! (defined(__BORLANDC__) && !defined(__WIN32__))
-  command[count++] = copystring(name);
-// #endif
+#if defined(__SMARTPHONE__) || defined(__POCKETPC__)
+    SHInitExtraControls();

 #endif
 
 #endif
 

-  strcpy(name, wxFileNameFromPath(name));
-  wxStripExtension(name);
-  wxTheApp->SetAppName(name);
-
-  /* Break up string */
-  // Treat strings enclosed in double-quotes as single arguments
-  char* str = buf;
-  while (*str)
-  {
-    if ( count == WXSIZEOF(command) )
-    {
-      wxFAIL_MSG("too many command line args.");
-      break;
-    }
+#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

 
 

-    while ( *str && isspace(*str) )  // skip whitespace
-      str++;
+    wxOleInitialize();

 
 

-    if (*str == '"')
-    {
-      str++;
-      command[count++] = str;
-      while (*str && *str != '"')
-        str++;
-    }
-    else if (*str)
-    {
-      command[count++] = str;
-      while (*str && !isspace(*str))
-        str++;
-    }
-    if (*str)
-      *str++ = '\0';
-  }
+    RegisterWindowClasses();

 
 

-  wxTheApp->argv = new char*[count + 1];
-  wxTheApp->argv[count] = NULL; /* argv[] is NULL terminated list! */
-  wxTheApp->argc = count;
+    wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);

 
 

-  for (i = 0; i < count; i++)
-  {
-    wxTheApp->argv[i] = copystring(command[i]);
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    wxSetKeyboardHook(true);
+#endif

 
 

-    delete [] command[i];
-  }
+    callBaseCleanup.Dismiss();

 
 

-  delete [] command;
-  delete [] buf;
+    return true;

 }
 
 }
 

-//// Cleans up any wxWindows internal structures left lying around
+// ---------------------------------------------------------------------------
+// RegisterWindowClasses
+// ---------------------------------------------------------------------------

 
 

-void wxApp::CleanUp()
+// 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()

 {
 {

-  //// COMMON CLEANUP
-  wxModule::CleanUpModules();
-
-#if USE_WX_RESOURCES
-  wxCleanUpResourceSystem();
-
-//  wxDefaultResourceTable->ClearTable();
-#endif
-
-  // Indicate that the cursor can be freed,
-  // so that cursor won't be deleted by deleting
-  // the bitmap list before g_globalCursor goes out
-  // of scope (double deletion of the cursor).
-  wxSetCursor(wxNullCursor);
-  delete g_globalCursor;
+    WNDCLASS wndclass;
+    wxZeroMemory(wndclass);

 
 

-  wxDeleteStockObjects() ;
+    // 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;

 
 

-  // Destroy all GDI lists, etc.
-  wxDeleteStockLists();
+    // the fields which are common to all classes
+    wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
+    wndclass.hInstance     = wxhInstance;
+    wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);

 
 

-  delete wxTheColourDatabase;
-  wxTheColourDatabase = NULL;
+    // register the class for all normal windows
+    wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
+    wndclass.lpszClassName = wxCanvasClassName;
+    wndclass.style         = styleNormal;

 
 

-#if USE_POSTSCRIPT
-  wxInitializePrintSetupData(FALSE);
-  delete wxThePrintPaperDatabase;
-  wxThePrintPaperDatabase = NULL;
-#endif
+    if ( !RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxT("RegisterClass(frame)"));
+    }

 
 

-  wxBitmap::CleanUpHandlers();
+    // "no redraw" frame
+    wndclass.lpszClassName = wxCanvasClassNameNR;
+    wndclass.style         = styleNoRedraw;

 
 

-  delete[] wxBuffer;
-  wxBuffer = NULL;
+    if ( !RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxT("RegisterClass(no redraw frame)"));
+    }

 
 

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

 
 

-  wxSetKeyboardHook(FALSE);
+    if ( !RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxT("RegisterClass(MDI parent)"));
+    }

 
 

-#ifdef __WIN95__
-  if (gs_hRichEdit != NULL)
-    FreeLibrary(gs_hRichEdit);
-#endif
+    // "no redraw" MDI frame
+    wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
+    wndclass.style         = styleNoRedraw;

 
 

-#if USE_PENWINDOWS
-  wxCleanUpPenWin();
-#endif
+    if ( !RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
+    }

 
 

-  if (wxSTD_FRAME_ICON)
-    DestroyIcon(wxSTD_FRAME_ICON);
-  if (wxSTD_MDICHILDFRAME_ICON)
-    DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
-  if (wxSTD_MDIPARENTFRAME_ICON)
-    DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
-
-  if (wxDEFAULT_FRAME_ICON)
-    DestroyIcon(wxDEFAULT_FRAME_ICON);
-  if (wxDEFAULT_MDICHILDFRAME_ICON)
-    DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
-  if (wxDEFAULT_MDIPARENTFRAME_ICON)
-    DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
-
-  if ( wxDisableButtonBrush )
-    ::DeleteObject( wxDisableButtonBrush ) ;
-
-#if     defined(WX_DRAG_DROP)
-  ::OleUninitialize();
-#endif
+    // Register the MDI child frame window class.
+    wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
+    wndclass.lpszClassName = wxMDIChildFrameClassName;
+    wndclass.style         = styleNormal;

 
 

-#if CTL3D
-  Ctl3dUnregister(wxhInstance);
-#endif
+    if ( !RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxT("RegisterClass(MDI child)"));
+    }

 
 

-  if (wxWinHandleList)
-    delete wxWinHandleList ;
+    // "no redraw" MDI child frame
+    wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
+    wndclass.style         = styleNoRedraw;

 
 

-  wxClassInfo::CleanUpClasses();
+    if ( !RegisterClass(&wndclass) )
+    {
+        wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
+    }

 
 

-  // do it as the very last thing because everything else can log messages
-  wxLog::DontCreateOnDemand();
-  delete wxLog::SetActiveTarget(NULL);
+    return true;

 }
 
 }
 

-#if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
+// ---------------------------------------------------------------------------
+// UnregisterWindowClasses
+// ---------------------------------------------------------------------------

 
 

-//// Main wxWindows entry point
-int wxEntry(WXHINSTANCE hInstance,
-            WXHINSTANCE WXUNUSED(hPrevInstance),
-            char *lpCmdLine,
-            int nCmdShow,
-            bool enterLoop)
+bool wxApp::UnregisterWindowClasses()

 {
 {

-#ifndef __WXDEBUG__ // take everything into a try-except block in release build
-  __try {
-#endif
-
-  wxhInstance = (HINSTANCE) hInstance;
+    bool retval = true;

 
 

-  if (!wxApp::Initialize())
-    return 0;
+#ifndef __WXMICROWIN__
+    // MDI frame window class.
+    if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
+    {
+        wxLogLastError(wxT("UnregisterClass(MDI parent)"));

 
 

-  // create the application object or ensure that one already exists
-  if (!wxTheApp)
-  {
-    // The app may have declared a global application object, but we recommend
-    // the IMPLEMENT_APP macro is used instead, which sets an initializer
-    // function for delayed, dynamic app object construction.
-    wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
-                 "No initializer - use IMPLEMENT_APP macro." );
-
-    wxTheApp = (*wxApp::GetInitializerFunction()) ();
-  }
-
-  wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
-
-  // save the WinMain() parameters
-  wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
-  wxTheApp->m_nCmdShow = nCmdShow;
-
-  // GUI-specific initialisation. In fact on Windows we don't have any,
-  // but this call is provided for compatibility across platforms.
-  wxTheApp->OnInitGui() ;
-
-  int retValue = 0;
-
-  if ( wxTheApp->OnInit() )
-  {
-      if ( enterLoop )
-      {
-          retValue = wxTheApp->OnRun();
-      }
-  }
-  //else: app initialization failed, so we skipped OnRun()
-
-  wxWindow *topWindow = wxTheApp->GetTopWindow();
-  if ( topWindow )
-  {
-      // Forcibly delete the window.
-      if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
-           topWindow->IsKindOf(CLASSINFO(wxDialog)) )
-      {
-          topWindow->Close(TRUE);
-          wxTheApp->DeletePendingObjects();
-      }
-      else
-      {
-          delete topWindow;
-          wxTheApp->SetTopWindow(NULL);
-      }
-  }
-
-  wxTheApp->OnExit();
-  wxApp::CleanUp();
-
-  delete wxTheApp;
-  wxTheApp = NULL;
-
-#if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
-  // At this point we want to check if there are any memory
-  // blocks that aren't part of the wxDebugContext itself,
-  // as a special case. Then when dumping we need to ignore
-  // wxDebugContext, too.
-  if (wxDebugContext::CountObjectsLeft() > 0)
-  {
-      wxTrace("There were memory leaks.\n");
-      wxDebugContext::Dump();
-      wxDebugContext::PrintStatistics();
-  }
-  wxDebugContext::SetStream(NULL, NULL);
-#endif
+        retval = false;
+    }

 
 

-  return retValue;
-#ifndef __WXDEBUG__ // catch exceptions only in release build
-  }
-  __except ( EXCEPTION_EXECUTE_HANDLER ) {
-    /*
-    if ( wxTheApp )
-      wxTheApp->OnFatalException();
-    */
+    // "no redraw" MDI frame
+    if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
+    {
+        wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));

 
 

-    ::ExitProcess(3); // the same exit code as abort()
-  }
-#endif //debug
-}
+        retval = false;
+    }

 
 

-#else /*  _WINDLL  */
+    // MDI child frame window class.
+    if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
+    {
+        wxLogLastError(wxT("UnregisterClass(MDI child)"));

 
 

-//// Entry point for DLLs
+        retval = false;
+    }

 
 

-int wxEntry(WXHINSTANCE hInstance)
-{
-  wxhInstance = (HINSTANCE) hInstance;
-  wxApp::Initialize();
+    // "no redraw" MDI child frame
+    if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
+    {
+        wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));

 
 

-  // The app may have declared a global application object, but we recommend
-  // the IMPLEMENT_APP macro is used instead, which sets an initializer function
-  // for delayed, dynamic app object construction.
+        retval = false;
+    }

 
 

-  if (!wxTheApp)
-  {
-    if (!wxApp::GetInitializerFunction())
+    // canvas class name
+    if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )

     {
     {

-      MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
-    return 0;
+        wxLogLastError(wxT("UnregisterClass(canvas)"));
+
+        retval = false;

     }
 
     }
 

-    wxTheApp = (* wxApp::GetInitializerFunction()) ();
-  }
+    if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
+    {
+        wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));

 
 

-  if (!wxTheApp) {
-    MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
-    return 0;
-  }
+        retval = false;
+    }
+#endif // __WXMICROWIN__

 
 

-  wxTheApp->argc = 0;
-  wxTheApp->argv = NULL;
+    return retval;
+}

 
 

-  wxTheApp->OnInitGui();
+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
+    wxAppBase::CleanUp();
+
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+    wxSetKeyboardHook(false);
+#endif

 
 

-  wxTheApp->OnInit();
+    wxOleUninitialize();

 
 

-  if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
-    wxTheApp->GetTopWindow()->Show(TRUE);
-  }
+    // 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();

 
 

-  return 1;
-}
-#endif // _WINDLL
+    delete wxWinHandleHash;
+    wxWinHandleHash = NULL;

 
 

-//// Static member initialization
+#ifdef __WXWINCE__
+    free( wxCanvasClassName );
+    free( wxCanvasClassNameNR );
+#endif
+}

 
 

-wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
+// ----------------------------------------------------------------------------
+// wxApp ctor/dtor
+// ----------------------------------------------------------------------------

 
 wxApp::wxApp()
 {
 
 wxApp::wxApp()
 {

-  m_topWindow = NULL;
-  wxTheApp = this;
-  m_className = "";
-  m_wantDebugOutput = TRUE ;
-  m_appName = "";
-  argc = 0;
-  argv = NULL;
-#ifdef __WXMSW__
-  m_printMode = wxPRINT_WINDOWS;
-#else
-  m_printMode = wxPRINT_POSTSCRIPT;
-#endif
-  m_exitOnFrameDelete = TRUE;
-  m_auto3D = TRUE;
+    m_printMode = wxPRINT_WINDOWS;

 }
 
 wxApp::~wxApp()
 {
 }
 
 wxApp::~wxApp()
 {

-  // Delete command-line args
-  int i;
-  for (i = 0; i < argc; i++)
-  {
-    delete[] argv[i];
-  }
-  delete argv;

 }
 
 }
 

-bool wxApp::Initialized()
-{
-#ifndef _WINDLL
-  if (GetTopWindow())
-    return TRUE;
-  else
-    return FALSE;
-#endif
-#ifdef _WINDLL // Assume initialized if DLL (no way of telling)
-  return TRUE;
-#endif
-}
+// ----------------------------------------------------------------------------
+// wxApp idle handling
+// ----------------------------------------------------------------------------

 
 

-/*
- * Get and process a message, returning FALSE if WM_QUIT
- * received.
- *
- */
-bool wxApp::DoMessage()
+void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event))

 {
 {

-  if (!::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0))
-  {
-    return FALSE;
-  }
-
-  // Process the message
-  if (!ProcessMessage((WXMSG *)&s_currentMsg))
-  {
-    ::TranslateMessage(&s_currentMsg);
-    wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
-    ::DispatchMessage(&s_currentMsg);
-  }
-  return TRUE;
+#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))
+        wxMSWDCImpl::ClearCache();
+#endif // wxUSE_DC_CACHEING

 }
 
 }
 

-/*
- * 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).
- */
-
-int wxApp::MainLoop()
+void wxApp::WakeUpIdle()

 {
 {

-  m_keepGoing = TRUE;
-  while (m_keepGoing)
-  {
-    while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
-           ProcessIdle()) {}
-    if (!DoMessage())
-      m_keepGoing = FALSE;
-  }
-
-  return s_currentMsg.wParam;
+    // Send the top window a dummy message so idle handler processing will
+    // 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();
+    if ( topWindow )
+    {
+        if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
+        {
+            // should never happen
+            wxLogLastError(wxT("PostMessage(WM_NULL)"));
+        }
+    }

 }
 
 }
 

-// Returns TRUE if more time is needed.
-bool wxApp::ProcessIdle()
-{
-    wxIdleEvent event;
-    event.SetEventObject(this);
-    ProcessEvent(event);
-
-    return event.MoreRequested();
-}
+// ----------------------------------------------------------------------------
+// other wxApp event hanlders
+// ----------------------------------------------------------------------------

 
 

-void wxApp::ExitMainLoop()
+void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))

 {
 {

-  m_keepGoing = FALSE;
+    if (GetTopWindow())
+        GetTopWindow()->Close(true);

 }
 
 }
 

-bool wxApp::Pending()
+// Default behaviour: close the application with prompts. The
+// user can veto the close, and therefore the end session.
+void wxApp::OnQueryEndSession(wxCloseEvent& event)

 {
 {

-  return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
+    if (GetTopWindow())
+    {
+        if (!GetTopWindow()->Close(!event.CanVeto()))
+            event.Veto(true);
+    }

 }
 
 }
 

-void wxApp::Dispatch()
+// ----------------------------------------------------------------------------
+// system DLL versions
+// ----------------------------------------------------------------------------
+
+#if wxUSE_DYNLIB_CLASS
+
+namespace

 {
 {

-    if (!DoMessage())
-      m_keepGoing = FALSE;
-}

 
 

-/*
- * Give all windows a chance to preprocess
- * the message. Some may have accelerator tables, or have
- * MDI complications.
- */
-bool wxApp::ProcessMessage(WXMSG *Msg)
+// helper function: retrieve the DLL version by using DllGetVersion(), returns
+// 0 if the DLL doesn't export such function
+int CallDllGetVersion(wxDynamicLibrary& dll)

 {
 {

-  MSG *msg = (MSG *)Msg;
+    // now check if the function is available during run-time
+    wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll );
+    if ( !pfnDllGetVersion )
+        return 0;

 
 

-  HWND hWnd;
+    DLLVERSIONINFO dvi;
+    dvi.cbSize = sizeof(dvi);

 
 

-  // Try translations first; find the youngest window with
-  // a translation table.
-  for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
-  {
-    wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
-    if (wnd)
+    HRESULT hr = (*pfnDllGetVersion)(&dvi);
+    if ( FAILED(hr) )

     {
     {

-       if (wnd->MSWTranslateMessage(Msg))
-         return TRUE;
-    }
-  }
+        wxLogApiError(_T("DllGetVersion"), hr);

 
 

-  // Anyone for a non-translation message? Try youngest descendants first.
-  for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
-  {
-    wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
-    if (wnd)
-    {
-       if (wnd->MSWProcessMessage(Msg))
-         return TRUE;
+        return 0;

     }
     }

-  }
-  return FALSE;
+
+    return 100*dvi.dwMajorVersion + dvi.dwMinorVersion;

 }
 
 }
 

-void wxApp::OnIdle(wxIdleEvent& event)
+} // anonymous namespace
+
+/* static */
+int wxApp::GetComCtl32Version()

 {
 {

-  static bool inOnIdle = FALSE;
+    // 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;

 
 

-  // Avoid recursion (via ProcessEvent default case)
-  if (inOnIdle)
-    return;
+    if ( s_verComCtl32 == -1 )
+    {
+        // we're prepared to handle the errors
+        wxLogNull noLog;

 
 

-  inOnIdle = TRUE;
+        // the DLL should really be available
+        wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM);
+        if ( !dllComCtl32.IsLoaded() )
+        {
+            s_verComCtl32 = 0;
+            return 0;
+        }

 
 

-  // 'Garbage' collection of windows deleted with Close().
-  DeletePendingObjects();
+        // try DllGetVersion() for recent DLLs
+        s_verComCtl32 = CallDllGetVersion(dllComCtl32);

 
 

-  // flush the logged messages if any
-  wxLog *pLog = wxLog::GetActiveTarget();
-  if ( pLog != NULL && pLog->HasPendingMessages() )
-    pLog->Flush();
+        // if DllGetVersion() is unavailable either during compile or
+        // run-time, try to guess the version otherwise
+        if ( !s_verComCtl32 )
+        {
+            // 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 )
+                {
+                    // not found, must be 4.70
+                    s_verComCtl32 = 470;
+                }
+                else
+                {
+                    // found, must be 4.71 or later
+                    s_verComCtl32 = 471;
+                }
+            }
+        }
+    }
+
+    return s_verComCtl32;
+}

 
 

-  // Send OnIdle events to all windows
-  bool needMore = SendIdleEvents();
-//  bool needMore = FALSE;
+/* static */
+int wxApp::GetShell32Version()
+{
+    static int s_verShell32 = -1;
+    if ( s_verShell32 == -1 )
+    {
+        // we're prepared to handle the errors
+        wxLogNull noLog;

 
 

-  if (needMore)
-    event.RequestMore(TRUE);
+        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;
+        }
+    }

 
 

-  inOnIdle = FALSE;
+    return s_verShell32;

 }
 
 }
 

-// Send idle event to all top-level windows
-bool wxApp::SendIdleEvents()
+#else // !wxUSE_DYNLIB_CLASS
+
+/* static */
+int wxApp::GetComCtl32Version()

 {
 {

-    bool needMore = FALSE;
-  wxNode* node = wxTopLevelWindows.First();
-  while (node)
-  {
-    wxWindow* win = (wxWindow*) node->Data();
-    if (SendIdleEvents(win))
-            needMore = TRUE;
-
-    node = node->Next();
-  }
-    return needMore;
+    return 0;

 }
 
 }
 

-// Send idle event to window and all subwindows
-bool wxApp::SendIdleEvents(wxWindow* win)
+/* static */
+int wxApp::GetShell32Version()

 {
 {

-  bool needMore = FALSE;
+    return 0;
+}

 
 

-  wxIdleEvent event;
-  event.SetEventObject(win);
-  win->ProcessEvent(event);
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS

 
 

-  if (event.MoreRequested())
-    needMore = TRUE;
+// ----------------------------------------------------------------------------
+// Yield to incoming messages
+// ----------------------------------------------------------------------------

 
 

-  wxNode* node = win->GetChildren()->First();
-  while (node)
-  {
-    wxWindow* win = (wxWindow*) node->Data();
-    if (SendIdleEvents(win))
-      needMore = TRUE;
+bool wxApp::Yield(bool onlyIfNeeded)
+{
+    // MT-FIXME
+    static bool s_inYield = false;

 
 

-    node = node->Next();
-  }
-  return needMore ;
-}
+#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

 
 

-void wxApp::DeletePendingObjects()
-{
-  wxNode *node = wxPendingDelete.First();
-  while (node)
-  {
-    wxObject *obj = (wxObject *)node->Data();
+    if ( s_inYield )
+    {
+        if ( !onlyIfNeeded )
+        {
+            wxFAIL_MSG( wxT("wxYield called recursively" ) );
+        }

 
 

-    delete obj;
+        return false;
+    }

 
 

-    if (wxPendingDelete.Member(obj))
-      delete node;
+    s_inYield = true;

 
 

-    // Deleting one object may have deleted other pending
-    // objects, so start from beginning of list again.
-    node = wxPendingDelete.First();
-  }
-}
+    // 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

 
 

-wxLog* wxApp::CreateLogTarget()
-{
-    return new wxLogGui;
-}
+        if ( !wxTheApp->Dispatch() )
+            break;
+    }

 
 

-wxWindow* wxApp::GetTopWindow() const
-{
-    if (m_topWindow)
-        return m_topWindow;
-    else if (wxTopLevelWindows.Number() > 0)
-        return (wxWindow*) wxTopLevelWindows.First()->Data();
-    else
-        return NULL;
-}
+    // if there are pending events, we must process them.
+    ProcessPendingEvents();

 
 

-int wxApp::GetComCtl32Version() const
-{
-    // have we loaded COMCTL32 yet?
-    HMODULE theModule = ::GetModuleHandle("COMCTL32");
-    int version = 0;
+#if wxUSE_LOG
+    // let the logs be flashed again
+    wxLog::Resume();
+#endif // wxUSE_LOG

 
 

-    // if so, then we can check for the version
-    if (theModule)
-    {
-        // InitCommonControlsEx is unique to 4.7 and later
-        FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
+    s_inYield = false;

 
 

-        if (! theProc)
-        {                    // not found, must be 4.00
-      version = 400;
-        }
-        else
-        {
-      // The following symbol are unique to 4.71
-      //   DllInstall
-      //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
-      //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
-      //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
-      //   FlatSB_ShowScrollBar
-      //   _DrawIndirectImageList _DuplicateImageList
-      //   InitializeFlatSB
-      //   UninitializeFlatSB
-      // we could check for any of these - I chose DllInstall
-      FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
-      if (! theProc)
-      {
-        // not found, must be 4.70
-        version = 470;
-      }
-      else
-      {                         // found, must be 4.71
-        version = 471;
-      }
-        }
-    }
-    return version;
+    return true;

 }
 
 }
 

-void wxExit()
-{
-  wxApp::CleanUp();
-  FatalAppExit(0, "Fatal error: exiting");
-}
+#if wxUSE_EXCEPTIONS

 
 

-// Yield to incoming messages
-bool wxYield()
-{
-  MSG msg;
-  // We want to go back to the main message loop
-  // if we see a WM_QUIT. (?)
-  while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
-  {
-    if (!wxTheApp->DoMessage())
-      break;
-  }
-
-  return TRUE;
-}
+// ----------------------------------------------------------------------------
+// exception handling
+// ----------------------------------------------------------------------------

 
 

-HINSTANCE wxGetInstance()
+bool wxApp::OnExceptionInMainLoop()

 {
 {

-  return wxhInstance;
+    // 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
+
+        case IDRETRY:
+            return false;
+
+        case IDIGNORE:
+            return true;
+    }

 }
 
 }
 

-// For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
-// if in a separate file. So include it here to ensure it's linked.
-#if (defined(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
-  #include "main.cpp"
-#endif
+#endif // wxUSE_EXCEPTIONS