Replaced Ok() occurrences with IsOk() throughout trunk.

Additionally renamed wxOSX' private wxNativePrinterDC::Ok() function to IsOk().

Didn't deprecate the various Ok() functions: given the amount of changes already introduced in 3.0 a trivial one like this seems more suitable for after 3.0.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67681 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/dnd/dnd.cpp

@@ -141,7 +141,7 @@ public:
     {
         wxPaintDC dc(this);
 
-        if ( m_bitmap.Ok() )
+        if ( m_bitmap.IsOk() )
         {
             PrepareDC(dc);
 
@@ -177,7 +177,7 @@ public:
     {
         wxPaintDC dc(this);
 
-        if ( m_metafile.Ok() )
+        if ( m_metafile.IsOk() )
         {
             PrepareDC(dc);
 
@@ -1327,7 +1327,7 @@ void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
                     wxBITMAP_TYPE_BMP
 #endif
                   );
-    if (!image.Ok())
+    if (!image.IsOk())
     {
         wxLogError( wxT("Invalid image file...") );
         return;