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 #include "wx/wxprec.h"
  21
  22 #ifdef    __BORLANDC__
  23   #pragma hdrstop
  24 #endif  //__BORLANDC__
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/app.h"
  28     #include "wx/debug.h"
  29 #endif
  30
  31 #include "wx/module.h"
  32
  33 // ----------------------------------------------------------------------------
  34 // global vars
  35 // ----------------------------------------------------------------------------
  36
  37 wxApp * WXDLLEXPORT wxTheApp = NULL;
  38
  39 wxAppInitializerFunction
  40     wxAppBase::m_appInitFn = (wxAppInitializerFunction)NULL;
  41
  42 // ----------------------------------------------------------------------------
  43 // private classes
  44 // ----------------------------------------------------------------------------
  45
  46 class /* no WXDLLEXPORT */ wxConsoleApp : public wxApp
  47 {
  48 public:
  49     virtual int OnRun() { wxFAIL_MSG(wxT("unreachable")); return 0; }
  50 };
  51
  52 // ----------------------------------------------------------------------------
  53 // private vars
  54 // ----------------------------------------------------------------------------
  55
  56 static size_t gs_nInitCount = 0;
  57
  58 // ============================================================================
  59 // implementation
  60 // ============================================================================
  61
  62 // ----------------------------------------------------------------------------
  63 // stubs for some GUI functions
  64 // ----------------------------------------------------------------------------
  65
  66 void WXDLLEXPORT wxExit()
  67 {
  68     abort();
  69 }
  70
  71 // Yield to other apps/messages
  72 bool WXDLLEXPORT wxYield()
  73 {
  74     // do nothing
  75     return TRUE;
  76 }
  77
  78 // Yield to other apps/messages
  79 void WXDLLEXPORT wxWakeUpIdle()
  80 {
  81     // do nothing
  82 }
  83
  84 // ----------------------------------------------------------------------------
  85 // wxBase-specific functions
  86 // ----------------------------------------------------------------------------
  87
  88 bool WXDLLEXPORT wxInitialize()
  89 {
  90     if ( gs_nInitCount )
  91     {
  92         // already initialized
  93         return TRUE;
  94     }
  95
  96     wxASSERT_MSG( !wxTheApp,
  97                   wxT("either call wxInitialize or create app, not both!") );
  98
  99     wxClassInfo::InitializeClasses();
 100
 101     wxModule::RegisterModules();
 102     if ( !wxModule::InitializeModules() )
 103     {
 104         return FALSE;
 105     }
 106
 107     wxTheApp = new wxConsoleApp;
 108
 109     if ( !wxTheApp )
 110     {
 111         return FALSE;
 112     }
 113
 114     gs_nInitCount++;
 115
 116     return TRUE;
 117 }
 118
 119 void WXDLLEXPORT wxUninitialize()
 120 {
 121     if ( !--gs_nInitCount )
 122     {
 123         wxModule::CleanUpModules();
 124
 125         wxClassInfo::CleanUpClasses();
 126
 127         // delete the application object
 128         delete wxTheApp;
 129         wxTheApp = (wxApp *)NULL;
 130     }
 131 }