// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "appbase.h"
-#endif
+#include "wx/wxprec.h"
-#include "wx/app.h"
-#include "wx/debug.h"
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif //__BORLANDC__
-// ----------------------------------------------------------------------------
-// global vars
-// ----------------------------------------------------------------------------
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+ #include "wx/debug.h"
+ #include "wx/filefn.h"
+ #include "wx/log.h"
+ #include "wx/thread.h"
+#endif
+
+#include "wx/init.h"
-wxApp * WXDLLEXPORT wxTheApp = NULL;
+#include "wx/ptr_scpd.h"
+#include "wx/module.h"
-wxAppInitializerFunction
- wxAppBase::m_appInitFn = (wxAppInitializerFunction)NULL;
+#if defined(__WXMSW__) && defined(__WXDEBUG__)
+ #include "wx/msw/msvcrt.h"
-#if wxUSE_THREADS
- // List of events pending processing
- wxList *wxPendingEvents = NULL;
- wxCriticalSection *wxPendingEventsLocker = NULL;
-#endif // wxUSE_THREADS
+ static struct EnableMemLeakChecking
+ {
+ EnableMemLeakChecking()
+ {
+ // 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)
+ wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
+ }
+ } gs_enableLeakChecks;
+#endif // __WXMSW__ && __WXDEBUG__
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
-class /* no WXDLLEXPORT */ wxConsoleApp : public wxApp
+// we need a dummy app object if the user doesn't want to create a real one
+class wxDummyConsoleApp : public wxAppConsole
+{
+public:
+ virtual int OnRun() { wxFAIL_MSG( _T("unreachable code") ); return 0; }
+};
+
+// we need a special kind of auto pointer to wxApp which not only deletes the
+// pointer it holds in its dtor but also resets wxTheApp
+wxDECLARE_SCOPED_PTR(wxApp, wxAppPtrBase);
+wxDEFINE_SCOPED_PTR(wxApp, wxAppPtrBase);
+
+class wxAppPtr : public wxAppPtrBase
{
public:
- virtual int OnRun() { wxFAIL_MSG(T("unreachable")); return 0; }
+ wxEXPLICIT wxAppPtr(wxApp *ptr = NULL) : wxAppPtrBase(ptr) { }
+ ~wxAppPtr()
+ {
+ if ( get() )
+ {
+ // the pointer is going to be deleted in the base class dtor, don't
+ // leave the dangling pointer!
+ wxTheApp = NULL;
+ }
+ }
+
+ void Set(wxApp *ptr)
+ {
+ reset(ptr);
+
+ wxTheApp = ptr;
+ }
+};
+
+// class to ensure that wxAppBase::CleanUp() is called if our Initialize()
+// fails
+class wxCallAppCleanup
+{
+public:
+ wxCallAppCleanup(wxApp *app) : m_app(app) { }
+ ~wxCallAppCleanup() { if ( m_app ) m_app->CleanUp(); }
+
+ void Dismiss() { m_app = NULL; }
+
+private:
+ wxApp *m_app;
+};
+
+// another tiny class which simply exists to ensure that wxEntryCleanup is
+// always called
+class wxCleanupOnExit
+{
+public:
+ ~wxCleanupOnExit() { wxEntryCleanup(); }
};
// ----------------------------------------------------------------------------
-// private vars
+// private functions
// ----------------------------------------------------------------------------
-static size_t gs_nInitCount = 0;
+// suppress warnings about unused variables
+static inline void Use(void *) { }
+
+#define WX_SUPPRESS_UNUSED_WARN(x) Use(&x)
+
+// ----------------------------------------------------------------------------
+// initialization data
+// ----------------------------------------------------------------------------
+
+static struct InitData
+{
+ InitData()
+ {
+ nInitCount = 0;
+
+#if wxUSE_UNICODE
+ argc = 0;
+ // argv = NULL; -- not even really needed
+#endif // wxUSE_UNICODE
+ }
+
+ // critical section protecting this struct
+ wxCRIT_SECT_DECLARE_MEMBER(csInit);
+
+ // number of times wxInitialize() was called minus the number of times
+ // wxUninitialize() was
+ size_t nInitCount;
+
+#if wxUSE_UNICODE
+ int argc;
+
+ // if we receive the command line arguments as ASCII and have to convert
+ // them to Unicode ourselves (this is the case under Unix but not Windows,
+ // for example), we remember the converted argv here because we'll have to
+ // free it when doing cleanup to avoid memory leaks
+ wchar_t **argv;
+#endif // wxUSE_UNICODE
+} gs_initData;
// ============================================================================
// implementation
// ============================================================================
-bool WXDLLEXPORT wxInitialize()
+// ----------------------------------------------------------------------------
+// command line arguments ANSI -> Unicode conversion
+// ----------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+
+static void ConvertArgsToUnicode(int argc, char **argv)
{
- if ( gs_nInitCount )
+ gs_initData.argv = new wchar_t *[argc + 1];
+ for ( int i = 0; i < argc; i++ )
{
- // already initialized
- return TRUE;
+ gs_initData.argv[i] = wxStrdup(wxConvLocal.cMB2WX(argv[i]));
}
- wxASSERT_MSG( !wxTheApp,
- T("either call wxInitialize or create app, not both!") );
+ gs_initData.argv[argc] = NULL;
+}
+
+static void FreeConvertedArgs()
+{
+ if ( gs_initData.argv )
+ {
+ for ( int i = 0; i < gs_initData.argc; i++ )
+ {
+ free(gs_initData.argv[i]);
+ }
+
+ delete [] gs_initData.argv;
+ gs_initData.argv = NULL;
+ }
+}
+
+#endif // wxUSE_UNICODE
+
+// ----------------------------------------------------------------------------
+// start up
+// ----------------------------------------------------------------------------
+// initialization which is always done (not customizable) before wxApp creation
+static bool DoCommonPreInit()
+{
wxClassInfo::InitializeClasses();
+ return true;
+}
+
+// non customizable initialization done after wxApp creation and initialization
+static bool DoCommonPostInit()
+{
wxModule::RegisterModules();
- if ( !wxModule::InitializeModules() )
+
+ return wxModule::InitializeModules();
+}
+
+bool wxEntryStart(int& argc, wxChar **argv)
+{
+ // do minimal, always necessary, initialization
+ // --------------------------------------------
+
+ // initialize wxRTTI
+ if ( !DoCommonPreInit() )
{
- return FALSE;
+ return false;
}
- wxTheApp = new wxConsoleApp;
- if ( !wxTheApp )
+ // first of all, we need an application object
+ // -------------------------------------------
+
+ // the user might have already created it himself somehow
+ wxAppPtr app(wxTheApp);
+ if ( !app.get() )
+ {
+ // if not, he might have used IMPLEMENT_APP() to give us a function to
+ // create it
+ wxAppInitializerFunction fnCreate = wxApp::GetInitializerFunction();
+
+ if ( fnCreate )
+ {
+ // he did, try to create the custom wxApp object
+ app.Set((*fnCreate)());
+ }
+ }
+
+ if ( !app.get() )
{
- return FALSE;
+ // either IMPLEMENT_APP() was not used at all or it failed -- in any
+ // case we still need something
+ //
+ // NB: cast is needed because for the backwards-compatibility reasons
+ // wxTheApp is really a wxApp and not just wxAppConsole...
+ app.Set((wxApp *)new wxDummyConsoleApp);
}
- gs_nInitCount++;
- return TRUE;
+ // wxApp initialization: this can be customized
+ // --------------------------------------------
+
+ if ( !wxTheApp->Initialize(argc, argv) )
+ {
+ return false;
+ }
+
+ wxCallAppCleanup callAppCleanup(wxTheApp);
+
+ // for compatibility call the old initialization function too
+ if ( !wxTheApp->OnInitGui() )
+ return false;
+
+
+ // common initialization after wxTheApp creation
+ // ---------------------------------------------
+
+ if ( !DoCommonPostInit() )
+ return false;
+
+
+ // prevent the smart pointer from destroying its contents
+ app.release();
+
+ // and the cleanup object from doing cleanup
+ callAppCleanup.Dismiss();
+
+ return true;
}
-void WXDLLEXPORT wxUninitialize()
+#if wxUSE_UNICODE
+
+// we provide a wxEntryStart() wrapper taking "char *" pointer too
+bool wxEntryStart(int& argc, char **argv)
{
- if ( !--gs_nInitCount )
+ ConvertArgsToUnicode(argc, argv);
+
+ if ( !wxEntryStart(argc, gs_initData.argv) )
{
- wxModule::CleanUpModules();
+ FreeConvertedArgs();
+
+ return false;
+ }
- wxClassInfo::CleanUpClasses();
+ return true;
+}
+
+#endif // wxUSE_UNICODE
+
+// ----------------------------------------------------------------------------
+// clean up
+// ----------------------------------------------------------------------------
+
+// cleanup done before destroying wxTheApp
+static void DoCommonPreCleanup()
+{
+#if wxUSE_LOG
+ // flush the logged messages if any and install a 'safer' log target: the
+ // default one (wxLogGui) can't be used after the resources are freed just
+ // below and the user supplied one might be even more unsafe (using any
+ // wxWindows GUI function is unsafe starting from now)
+ wxLog::DontCreateOnDemand();
+
+ // this will flush the old messages if any
+ delete wxLog::SetActiveTarget(new wxLogStderr);
+#endif // wxUSE_LOG
+
+ wxModule::CleanUpModules();
+}
+
+// cleanup done after destroying wxTheApp
+static void DoCommonPostCleanup()
+{
+ wxClassInfo::CleanUpClasses();
+
+ // we can't do this in wxApp itself because it doesn't know if argv had
+ // been allocated
+#if wxUSE_UNICODE
+ FreeConvertedArgs();
+#endif // wxUSE_UNICODE
+
+#if wxUSE_LOG
+ // and now delete the last logger as well
+ delete wxLog::SetActiveTarget(NULL);
+#endif // wxUSE_LOG
+}
+
+void wxEntryCleanup()
+{
+ DoCommonPreCleanup();
+
+
+ // delete the application object
+ if ( wxTheApp )
+ {
+ wxTheApp->CleanUp();
- // delete the application object
delete wxTheApp;
- wxTheApp = (wxApp *)NULL;
+ wxTheApp = NULL;
+ }
+
+
+ DoCommonPostCleanup();
+
+ // check for memory leaks
+#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
+ if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
+ {
+ wxLogDebug(wxT("There were memory leaks.\n"));
+ wxDebugContext::Dump();
+ wxDebugContext::PrintStatistics();
+ }
+#endif // Debug
+
+}
+
+// ----------------------------------------------------------------------------
+// wxEntry
+// ----------------------------------------------------------------------------
+
+#if !defined(__WXMSW__) || !wxUSE_ON_FATAL_EXCEPTION
+ #define wxEntryReal wxEntry
+#endif // !(__WXMSW__ && wxUSE_ON_FATAL_EXCEPTION)
+
+int wxEntryReal(int& argc, wxChar **argv)
+{
+ // library initialization
+ if ( !wxEntryStart(argc, argv) )
+ {
+ return -1;
+ }
+
+ // if wxEntryStart succeeded, we must call wxEntryCleanup even if the code
+ // below returns or throws
+ wxCleanupOnExit cleanupOnExit;
+
+ WX_SUPPRESS_UNUSED_WARN(cleanupOnExit);
+
+ // app initialization
+ if ( !wxTheApp->CallOnInit() )
+ {
+ // don't call OnExit() if OnInit() failed
+ return -1;
+ }
+
+ // app execution
+ int retValue = wxTheApp->OnRun();
+
+ // why should we do this? it doesn't close all window, just one of them and
+ // this shouldn't be necessary anyhow...
+#if 0
+ // close any remaining windows
+ wxWindow *topWindow = wxTheApp->GetTopWindow();
+ if ( topWindow )
+ {
+ // forcibly delete the window.
+ topWindow->Destroy();
+
+ // collect the dead objects
+ wxTheApp->DeletePendingObjects();
+ }
+#endif // 0
+
+ // app clean up
+ wxTheApp->OnExit();
+
+ return retValue;
+}
+
+// wrap real wxEntry in a try-except block to be able to call
+// OnFatalException() if necessary
+#if defined(__WXMSW__) && wxUSE_ON_FATAL_EXCEPTION
+
+#ifdef __WXWINCE__
+// For ExitThread
+#include "wx/msw/private.h"
+#endif
+
+extern unsigned long wxGlobalSEHandler();
+
+int wxEntry(int& argc, wxChar **argv)
+{
+ __try
+ {
+ return wxEntryReal(argc, argv);
+ }
+ __except ( wxGlobalSEHandler() )
+ {
+#ifdef __WXWINCE__
+ ::ExitThread(3); // the same exit code as abort()
+#else
+ ::ExitProcess(3); // the same exit code as abort()
+#endif
+
+#if !defined(_MSC_VER) || _MSC_VER < 1300
+ // this code is unreachable but put it here to suppress warnings
+ // from some compilers
+ return -1;
+#endif
}
}
+
+#endif // __WXMSW__ && wxUSE_ON_FATAL_EXCEPTION
+
+#if wxUSE_UNICODE
+
+// as with wxEntryStart, we provide an ANSI wrapper
+int wxEntry(int& argc, char **argv)
+{
+ ConvertArgsToUnicode(argc, argv);
+
+ return wxEntry(argc, gs_initData.argv);
+}
+
+#endif // wxUSE_UNICODE
+
+// ----------------------------------------------------------------------------
+// wxInitialize/wxUninitialize
+// ----------------------------------------------------------------------------
+
+bool wxInitialize(int argc, wxChar **argv)
+{
+ wxCRIT_SECT_LOCKER(lockInit, gs_initData.csInit);
+
+ if ( gs_initData.nInitCount++ )
+ {
+ // already initialized
+ return true;
+ }
+
+ return wxEntryStart(argc, argv);
+}
+
+void wxUninitialize()
+{
+ wxCRIT_SECT_LOCKER(lockInit, gs_initData.csInit);
+
+ if ( !--gs_initData.nInitCount )
+ {
+ wxEntryCleanup();
+ }
+}
+
projects / wxWidgets.git / blobdiff