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 #if defined(HAVE_DLOPEN)
  24     #include <dlfcn.h>
  25
  26     typedef void *wxDllType;
  27 #elif defined(HAVE_SHLLOAD)
  28     #include <dl.h>
  29
  30     typedef void *wxDllType;
  31 #elif defined(__WINDOWS__)
  32     #include <windows.h>
  33
  34     typedef HMODULE wxDllType;
  35 #elif defined(__WXMAC__)
  36     typedef CFragConnectionID wxDllType;
  37 #else
  38     #error "wxLibrary can't be compiled on this platform, sorry."
  39 #endif // OS
  40
  41 // defined in windows.h
  42 #ifdef LoadLibrary
  43     #undef LoadLibrary
  44 #endif
  45
  46 // ----------------------------------------------------------------------------
  47 // wxLibrary
  48 // ----------------------------------------------------------------------------
  49
  50 class wxLibrary : public wxObject
  51 {
  52 public:
  53     wxHashTable classTable;
  54
  55 public:
  56     wxLibrary(void *handle);
  57     ~wxLibrary();
  58
  59     // Get a symbol from the dynamic library
  60     void *GetSymbol(const wxString& symbname);
  61
  62     // Create the object whose classname is "name"
  63     wxObject *CreateObject(const wxString& name);
  64
  65 protected:
  66     void PrepareClasses(wxClassInfo *first);
  67
  68     wxDllType m_handle;
  69 };
  70
  71 // ----------------------------------------------------------------------------
  72 // wxLibraries
  73 // ----------------------------------------------------------------------------
  74
  75 class wxLibraries
  76 {
  77 public:
  78     wxLibraries();
  79     ~wxLibraries();
  80
  81     // caller is responsible for deleting the returned pointer if !NULL
  82     wxLibrary *LoadLibrary(const wxString& basename);
  83
  84     wxObject *CreateObject(const wxString& name);
  85
  86 protected:
  87     wxList m_loaded;
  88 };
  89
  90 // ----------------------------------------------------------------------------
  91 // Global variables
  92 // ----------------------------------------------------------------------------
  93
  94 extern wxLibraries wxTheLibraries;
  95
  96 // ----------------------------------------------------------------------------
  97 // Interesting defines
  98 // ----------------------------------------------------------------------------
  99
 100 #define WXDLL_ENTRY_FUNCTION() \
 101 extern "C" wxClassInfo *wxGetClassFirst(); \
 102 wxClassInfo *wxGetClassFirst() { \
 103   return wxClassInfo::GetFirst(); \
 104 }
 105
 106 #endif // _WX_DYNLIB_H__