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wxWindows-2.3.3
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src
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common
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init.cpp
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C/C++ Source or Header
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2002-09-04
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6KB
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235 lines
/////////////////////////////////////////////////////////////////////////////
// Name: common/init.cpp
// Purpose: initialisation for the library
// Author: Vadim Zeitlin
// Modified by:
// Created: 04.10.99
// RCS-ID: $Id: init.cpp,v 1.18 2002/09/04 11:45:06 VZ Exp $
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif //__BORLANDC__
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/debug.h"
#include "wx/filefn.h"
#include "wx/log.h"
#endif
#include "wx/module.h"
// ----------------------------------------------------------------------------
// global vars
// ----------------------------------------------------------------------------
WXDLLEXPORT wxApp *wxTheApp = NULL;
wxAppInitializerFunction
wxAppBase::m_appInitFn = (wxAppInitializerFunction)NULL;
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
class /* no WXDLLEXPORT */ wxConsoleApp : public wxApp
{
public:
virtual int OnRun() { wxFAIL_MSG(wxT("unreachable")); return 0; }
};
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
static bool DoInit();
static void DoCleanUp();
// ----------------------------------------------------------------------------
// private vars
// ----------------------------------------------------------------------------
static size_t gs_nInitCount = 0;
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// stubs for some GUI functions
// ----------------------------------------------------------------------------
void WXDLLEXPORT wxExit()
{
abort();
}
// Yield to other apps/messages
void WXDLLEXPORT wxWakeUpIdle()
{
// do nothing
}
// ----------------------------------------------------------------------------
// wxBase-specific functions
// ----------------------------------------------------------------------------
bool WXDLLEXPORT wxInitialize()
{
if ( gs_nInitCount )
{
// already initialized
return TRUE;
}
wxASSERT_MSG( !wxTheApp,
wxT("either call wxInitialize or create app, not both!") );
if ( !DoInit() )
{
return FALSE;
}
wxTheApp = new wxConsoleApp;
if ( !wxTheApp )
{
return FALSE;
}
gs_nInitCount++;
return TRUE;
}
void WXDLLEXPORT wxUninitialize()
{
if ( !--gs_nInitCount )
{
DoCleanUp();
}
}
int wxEntry(int argc, char **argv)
{
// library initialization
if ( !DoInit() )
{
return -1;
}
// create the app
if ( !wxTheApp )
{
wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
wxT("No application object: use IMPLEMENT_APP macro.") );
wxAppInitializerFunction fnCreate = wxApp::GetInitializerFunction();
wxTheApp = (wxApp *)fnCreate();
}
wxCHECK_MSG( wxTheApp, -1, wxT("wxWindows error: no application object") );
// app preinitialization
wxTheApp->argc = argc;
#if wxUSE_UNICODE
wxTheApp->argv = new wxChar*[argc+1];
int mb_argc = 0;
while (mb_argc < argc)
{
wxTheApp->argv[mb_argc] = wxStrdup(wxConvLocal.cMB2WX(argv[mb_argc]));
mb_argc++;
}
wxTheApp->argv[mb_argc] = (wxChar *)NULL;
#else
wxTheApp->argv = argv;
#endif
wxString name = wxFileNameFromPath(argv[0]);
wxStripExtension(name);
wxTheApp->SetAppName(name);
int retValue = 0;
// app initialization
if ( !wxTheApp->OnInit() )
retValue = -1;
// app execution
if ( retValue == 0 )
{
retValue = wxTheApp->OnRun();
// app clean up
wxTheApp->OnExit();
}
// library clean up
DoCleanUp();
return retValue;
}
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
static bool DoInit()
{
wxClassInfo::InitializeClasses();
wxModule::RegisterModules();
if ( !wxModule::InitializeModules() )
{
return FALSE;
}
return TRUE;
}
static void DoCleanUp()
{
#if wxUSE_LOG
// flush the logged messages if any
wxLog *log = wxLog::GetActiveTarget();
if (log != NULL && log->HasPendingMessages())
log->Flush();
// continuing to use user defined log target is unsafe from now on because
// some resources may be already unavailable, so replace it by something
// more safe
wxLog::DontCreateOnDemand();
delete wxLog::SetActiveTarget(new wxLogStderr);
#endif // wxUSE_LOG
wxModule::CleanUpModules();
wxClassInfo::CleanUpClasses();
// delete the application object
delete wxTheApp;
wxTheApp = (wxApp *)NULL;
#if wxUSE_LOG
// and now delete the last logger as well
delete wxLog::SetActiveTarget(NULL);
#endif // wxUSE_LOG
}
// vi:sts=4:sw=4:et