include/wx/dynlib.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dynlib.cpp
   3 // Purpose:     Dynamic library management
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     20/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_DYNLIB_H__
  13 #define _WX_DYNLIB_H__
  14
  15 #ifdef __GNUG__
  16     #pragma interface
  17 #endif
  18
  19 #include <wx/string.h>
  20 #include <wx/list.h>
  21 #include <wx/hash.h>
  22
  23 // TODO should be done by configure
  24 #if defined(__UNIX__) && !(defined(HAVE_DLOPEN) || defined(HAVE_SHLLOAD))
  25     #if defined(__LINUX__) || defined(__SOLARIS__) || defined(__SUNOS__) || defined(__FREEBSD__)
  26         #define HAVE_DLOPEN
  27     #elif defined(__HPUX__)
  28         #define HAVE_SHLLOAD
  29     #endif // Unix flavour
  30 #endif // !Unix or already have some HAVE_xxx defined
  31
  32 #if defined(HAVE_DLOPEN)
  33     #include <dlfcn.h>
  34
  35     typedef void *wxDllType;
  36 #elif defined(HAVE_SHLLOAD)
  37     #include <dl.h>
  38
  39     typedef void *wxDllType;
  40 #elif defined(__WINDOWS__)
  41     #include <windows.h>
  42
  43     typedef HMODULE wxDllType;
  44 #elif defined(__WXMAC__)
  45     typedef CFragConnectionID wxDllType;
  46 #else
  47     #error "wxLibrary can't be compiled on this platform, sorry."
  48 #endif // OS
  49
  50 // defined in windows.h
  51 #ifdef LoadLibrary
  52     #undef LoadLibrary
  53 #endif
  54
  55 // ----------------------------------------------------------------------------
  56 // wxLibrary
  57 // ----------------------------------------------------------------------------
  58
  59 class wxLibrary : public wxObject
  60 {
  61 public:
  62     wxHashTable classTable;
  63
  64 public:
  65     wxLibrary(void *handle);
  66     ~wxLibrary();
  67
  68     // Get a symbol from the dynamic library
  69     void *GetSymbol(const wxString& symbname);
  70
  71     // Create the object whose classname is "name"
  72     wxObject *CreateObject(const wxString& name);
  73
  74 protected:
  75     void PrepareClasses(wxClassInfo *first);
  76
  77     wxDllType m_handle;
  78 };
  79
  80 // ----------------------------------------------------------------------------
  81 // wxLibraries
  82 // ----------------------------------------------------------------------------
  83
  84 class wxLibraries
  85 {
  86 public:
  87     wxLibraries();
  88     ~wxLibraries();
  89
  90     // caller is responsible for deleting the returned pointer if !NULL
  91     wxLibrary *LoadLibrary(const wxString& basename);
  92
  93     wxObject *CreateObject(const wxString& name);
  94
  95 protected:
  96     wxList m_loaded;
  97 };
  98
  99 // ----------------------------------------------------------------------------
 100 // Global variables
 101 // ----------------------------------------------------------------------------
 102
 103 extern wxLibraries wxTheLibraries;
 104
 105 // ----------------------------------------------------------------------------
 106 // Interesting defines
 107 // ----------------------------------------------------------------------------
 108
 109 #define WXDLL_ENTRY_FUNCTION() \
 110 extern "C" wxClassInfo *wxGetClassFirst(); \
 111 wxClassInfo *wxGetClassFirst() { \
 112   return wxClassInfo::GetFirst(); \
 113 }
 114
 115 #endif // _WX_DYNLIB_H__