include/wx/app.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.h
   3 // Purpose:     wxApp inclusion
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __APPH_BASE__
  13 #define __APPH_BASE__
  14
  15 #ifndef __WXGTK__
  16 class WXDLLEXPORT wxApp;
  17 typedef wxApp* (*wxAppInitializerFunction) (void);
  18 #endif
  19
  20 #include "wx/object.h"
  21
  22 #ifdef __WXGTK__
  23 typedef wxObject* (*wxAppInitializerFunction) (void);  // returning wxApp* won't work with gcc
  24 #endif
  25
  26 #if defined(__WXMSW__)
  27 #include "wx/msw/app.h"
  28 #elif defined(__WXMOTIF__)
  29 #include "wx/xt/app.h"
  30 #elif defined(__WXGTK__)
  31 #include "wx/gtk/app.h"
  32 #endif
  33
  34
  35 // Having a global instance of this class allows
  36 // wxApp to be aware of the app creator function.
  37 // wxApp can then call this function to create a new
  38 // app object. Convoluted, but necessary.
  39
  40 class WXDLLEXPORT wxAppInitializer
  41 {
  42 public:
  43         wxAppInitializer(wxAppInitializerFunction fn)
  44         {
  45                 wxApp::SetInitializerFunction(fn);
  46         }
  47 };
  48
  49 // Here's a macro you can use if your compiler
  50 // really, really wants main() to be in your main program
  51 // (e.g. hello.cpp).
  52 // Now IMPLEMENT_APP should add this code if required.
  53
  54 #if defined(__AIX__) || defined(__HPUX__)
  55 #define IMPLEMENT_WXWIN_MAIN \
  56 extern int wxEntry( int argc, char *argv[] ); \
  57 int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
  58 #else
  59 #define IMPLEMENT_WXWIN_MAIN
  60 #endif
  61
  62 #define IMPLEMENT_APP(appname)                          \
  63         wxApp *wxCreateApp(void) { return new appname; }      \
  64                 wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
  65         appname& wxGetApp(void) { return *(appname *)wxTheApp; } \
  66         IMPLEMENT_WXWIN_MAIN
  67
  68 #define DECLARE_APP(appname) \
  69         extern appname& wxGetApp(void) ;
  70
  71
  72 #endif
  73     // __APPH_BASE__