class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler
 {
 public:
-    wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"),
+    wxBMPFileHandler() : wxBitmapHandler(wxT("Windows bitmap file"), wxT("bmp"),
                                          wxBITMAP_TYPE_BMP)
     {
     }
 class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
 {
 public:
-    wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"),
+    wxBMPResourceHandler() : wxBitmapHandler(wxT("Windows bitmap resource"),
                                              wxEmptyString,
                                              wxBITMAP_TYPE_BMP_RESOURCE)
     {
                      )
     {
         wxIcon*                     pIcon = wxDynamicCast(pImage, wxIcon);
-        wxCHECK_MSG(pIcon, false, _T("wxIconHandler only works with icons"));
+        wxCHECK_MSG(pIcon, false, wxT("wxIconHandler only works with icons"));
 
         return LoadIcon( pIcon
                         ,rName
 class WXDLLEXPORT wxICOFileHandler : public wxIconHandler
 {
 public:
-    wxICOFileHandler() : wxIconHandler(_T("ICO icon file"),
-                                       _T("ico"),
+    wxICOFileHandler() : wxIconHandler(wxT("ICO icon file"),
+                                       wxT("ico"),
                                        wxBITMAP_TYPE_ICO)
     {
     }
 class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler
 {
 public:
-    wxICOResourceHandler() : wxIconHandler(_T("ICO resource"),
-                                           _T("ico"),
+    wxICOResourceHandler() : wxIconHandler(wxT("ICO resource"),
+                                           wxT("ico"),
                                            wxBITMAP_TYPE_ICO_RESOURCE)
     {
     }
 
     wxBitmapRefData*                pData = pBitmap->GetBitmapData();
 
-    if ( pBitmap->Ok() )
+    if ( pBitmap->IsOk() )
     {
         BITMAPINFOHEADER            vBmph;
 
         pData->m_nHeight = vBmph.cy;
         pData->m_nDepth  = vBmph.cBitCount;
     }
-    return(pBitmap->Ok());
+    return(pBitmap->IsOk());
 } // end of wxBMPResourceHandler::LoadFile
 
 bool wxBMPFileHandler::LoadFile( wxBitmap*       pBitmap,
 
     pIcon->SetHICON((WXHICON)hIcon);
 
-    return pIcon->Ok();
+    return pIcon->IsOk();
 } // end of wxICOResourceHandler::LoadIcon