src/common/init.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/init.cpp
   3 // Purpose:     initialisation for the library
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.10.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "appbase.h"
  22 #endif
  23
  24 #include "wx/app.h"
  25 #include "wx/debug.h"
  26
  27 // ----------------------------------------------------------------------------
  28 // global vars
  29 // ----------------------------------------------------------------------------
  30
  31 wxApp * WXDLLEXPORT wxTheApp = NULL;
  32
  33 wxAppInitializerFunction
  34     wxAppBase::m_appInitFn = (wxAppInitializerFunction)NULL;
  35
  36 // ----------------------------------------------------------------------------
  37 // private classes
  38 // ----------------------------------------------------------------------------
  39
  40 class /* no WXDLLEXPORT */ wxConsoleApp : public wxApp
  41 {
  42 public:
  43     virtual int OnRun() { wxFAIL_MSG(T("unreachable")); return 0; }
  44 };
  45
  46 // ----------------------------------------------------------------------------
  47 // private vars
  48 // ----------------------------------------------------------------------------
  49
  50 static size_t gs_nInitCount = 0;
  51
  52 // ============================================================================
  53 // implementation
  54 // ============================================================================
  55
  56 bool WXDLLEXPORT wxInitialize()
  57 {
  58     if ( gs_nInitCount++ )
  59     {
  60         // already initialized
  61         return TRUE;
  62     }
  63
  64     wxASSERT_MSG( !wxTheApp,
  65                   T("either call wxInitialize or create app, not both!") );
  66
  67     wxTheApp = new wxConsoleApp;
  68
  69     return wxTheApp != NULL;
  70 }
  71
  72 void WXDLLEXPORT wxUninitialize()
  73 {
  74     if ( !--gs_nInitCount )
  75     {
  76         // delete the application object
  77         delete wxTheApp;
  78         wxTheApp = (wxApp *)NULL;
  79     }
  80 }