Make a slider control created with a particular size/position adjust itself to the...

[wxWidgets.git] / include / wx / dynlib.h

diff --git a/include/wx/dynlib.h b/include/wx/dynlib.h
index 58c81afebd027a2733e7197a1cf0fe14215d1672..a4916b3706ccd88578966caa2efbd6ae217da302 100644 (file)
--- a/include/wx/dynlib.h
+++ b/include/wx/dynlib.h
@@ -32,7 +32,7 @@
     #define wxHAVE_DYNLIB_ERROR
 #endif
 
-class WXDLLIMPEXP_BASE wxDynamicLibraryDetailsCreator;
+class WXDLLIMPEXP_FWD_BASE wxDynamicLibraryDetailsCreator;
 
 // ----------------------------------------------------------------------------
 // conditional compilation
@@ -105,6 +105,27 @@ enum wxPluginCategory
 #define wxDYNLIB_FUNCTION(type, name, dynlib) \
     type pfn ## name = (type)(dynlib).GetSymbol(_T(#name))
 
+
+// the following macros can be used to redirect a whole
+// library to a class and check at run-time if the the
+// library is present and contains all required methods.
+
+#define wxDL_METHOD_DEFINE( rettype, name, args, shortargs, defret ) \
+    typedef rettype (* name ## Type) args ; \
+    name ## Type pfn_ ## name; \
+    rettype name args \
+    { if (m_ok) return pfn_ ## name shortargs ; return defret; }
+
+#define wxDL_VOIDMETHOD_DEFINE( name, args, shortargs ) \
+    typedef void (* name ## Type) args ; \
+    name ## Type pfn_ ## name; \
+    void name args \
+    { if (m_ok) pfn_ ## name shortargs ; }
+    
+#define wxDL_METHOD_LOAD( lib, name, success ) \
+    pfn_ ## name = (name ## Type) lib->GetSymbol( wxT(#name), &success ); \
+    if (!success) return;
+
 // ----------------------------------------------------------------------------
 // wxDynamicLibraryDetails: contains details about a loaded wxDynamicLibrary
 // ----------------------------------------------------------------------------
@@ -170,7 +191,7 @@ public:
     static wxDllType         GetProgramHandle();
 
     // return the platform standard DLL extension (with leading dot)
-    static const wxChar *GetDllExt() { return ms_dllext; }
+    static const wxString& GetDllExt() { return ms_dllext; }
 
     wxDynamicLibrary() : m_handle(0) { }
     wxDynamicLibrary(const wxString& libname, int flags = wxDL_DEFAULT)
@@ -298,7 +319,7 @@ protected:
 
 
     // platform specific shared lib suffix.
-    static const wxChar *ms_dllext;
+    static const wxString ms_dllext;
 
     // the handle to DLL or NULL
     wxDllType m_handle;