fixed slider value rounding once again

[wxWidgets.git] / src / common / dynlib.cpp

diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp
index cc41e9f693e7d6b9d3da0ba2ba6c4ad57381acf5..5c93399eee466932826be97f12f5e5d33360eb31 100644 (file)
--- a/src/common/dynlib.cpp
+++ b/src/common/dynlib.cpp
@@ -50,12 +50,23 @@
 #  define wxDllGetSymbol(handle, modaddr)   DosQueryProcAddr(handle, 1L, NULL, (PFN*)modaddr)
 #  define wxDllClose(handle)                DosFreeModule(handle)
 #elif defined(HAVE_DLOPEN)
-#   define wxDllOpen(lib)                dlopen(lib.fn_str(), RTLD_NOW/*RTLD_LAZY*/)
-#   define wxDllGetSymbol(handle, name)  dlsym(handle, name)
+    // note about dlopen() flags: we use RTLD_NOW to have more Windows-like
+    // behaviour (Win won't let you load a library with missing symbols) and
+    // RTLD_GLOBAL because it is needed sometimes and probably doesn't hurt
+    // otherwise. On True64-Unix RTLD_GLOBAL is not allowed and on VMS the
+    // second argument on dlopen is ignored.
+#ifdef __VMS
+# define wxDllOpen(lib)                dlopen(lib.fn_str(), 0 )
+#elif defined( __osf__ )
+# define wxDllOpen(lib)                dlopen(lib.fn_str(), RTLD_LAZY )
+#else
+# define wxDllOpen(lib)                dlopen(lib.fn_str(), RTLD_LAZY | RTLD_GLOBAL)
+#endif
+#define wxDllGetSymbol(handle, name)  dlsym(handle, name)
 #   define wxDllClose                    dlclose
 #elif defined(HAVE_SHL_LOAD)
 #   define wxDllOpen(lib)                shl_load(lib.fn_str(), BIND_DEFERRED, 0)
-#   define wxDllClose      shl_unload
+#   define wxDllClose                    shl_unload
 
     static inline void *wxDllGetSymbol(shl_t handle, const wxString& name)
     {
@@ -65,6 +76,15 @@
         else
             return (void *)0;
     }
+#elif defined(__APPLE__) && defined(__UNIX__)
+void *dlopen(const char *path, int mode /* mode is ignored */);
+void *dlsym(void *handle, const char *symbol);
+int   dlclose(void *handle);
+const char *dlerror(void);
+
+#   define wxDllOpen(lib)                dlopen(lib.fn_str(), 0)
+#   define wxDllGetSymbol(handle, name)  dlsym(handle, name)
+#   define wxDllClose                    dlclose
 #elif defined(__WINDOWS__)
     // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary
 #   ifdef __WIN32__
@@ -78,6 +98,8 @@
 #   endif  // Win32/16
 #   define wxDllGetSymbol(handle, name)    ::GetProcAddress(handle, name)
 #   define wxDllClose                      ::FreeLibrary
+#elif defined(__WXMAC__)
+#   define wxDllClose(handle)               CloseConnection(&handle)
 #else
 #   error "Don't know how to load shared libraries on this platform."
 #endif // OS
@@ -102,7 +124,6 @@ static wxString ConstructLibraryName(const wxString& basename)
     return fullname;
 }
 
-
 // ---------------------------------------------------------------------------
 // wxLibrary (one instance per dynamic library)
 // ---------------------------------------------------------------------------
@@ -147,7 +168,7 @@ void wxLibrary::PrepareClasses(wxClassInfo *first)
     {
         if (info->m_className)
             classTable.Put(info->m_className, (wxObject *)info);
-        info = info->GetNext();
+        info = (wxClassInfo *)info->GetNext();
     }
 
     // Set base pointers for each wxClassInfo
@@ -195,10 +216,10 @@ wxDllLoader::GetProgramHandle(void)
 {
 #if defined( HAVE_DLOPEN ) && !defined(__EMX__)
    // optain handle for main program
-   return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); 
+   return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/);
 #elif defined (HAVE_SHL_LOAD)
    // shl_findsymbol with NULL handle looks up in main program
-   return 0; 
+   return 0;
 #else
    wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2"));
    return 0;
@@ -211,18 +232,18 @@ wxDllLoader::LoadLibrary(const wxString & libname, bool *success)
 {
     wxDllType handle;
 
-#if defined(__WXMAC__)
+#if defined(__WXMAC__) && !defined(__UNIX__)
     FSSpec myFSSpec ;
     Ptr myMainAddr ;
     Str255 myErrName ;
 
-    wxMacPathToFSSpec( libname , &myFSSpec ) ;
+    wxMacFilename2FSSpec( libname , &myFSSpec ) ;
     if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
                 myErrName ) != noErr )
     {
         p2cstr( myErrName ) ;
-        wxASSERT_MSG( 1 , (char*)myErrName ) ;
-        return NULL ;
+        wxLogSysError( _("Failed to load shared library '%s' Error '%s'") , libname.c_str() , (char*)myErrName ) ;
+        handle = NULL ;
     }
 #elif defined(__WXPM__) || defined(__EMX__)
     char zError[256] = "";
@@ -284,13 +305,17 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name)
 {
     void *symbol = NULL;    // return value
 
-#if defined( __WXMAC__ )
+#if defined(__WXMAC__) && !defined(__UNIX__)
     Ptr symAddress ;
     CFragSymbolClass symClass ;
     Str255 symName ;
 
-    strcpy( (char*) symName , name ) ;
-    c2pstr( (char*) symName ) ;
+#if TARGET_CARBON
+    c2pstrcpy( (StringPtr) symName , name ) ;
+#else
+    strcpy( (char *) symName , name ) ;
+       c2pstr( (char *) symName ) ;
+#endif
 
     if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr )
         symbol = (void *)symAddress ;
@@ -340,7 +365,7 @@ wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
     if (node != NULL)
         return ((wxLibrary *)node->Data());
 #else // !OS/2
-    if ( (node = m_loaded.Find(name.GetData())) )
+    if ( (node = m_loaded.Find(name.GetData())) != NULL)
         return ((wxLibrary *)node->Data());
 #endif
     // If DLL shares data, this is necessary.