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

src/gtk1/dataobj.cpp

@@ -357,12 +357,12 @@ bool wxBitmapDataObject::SetData(size_t size, const void *buf)
 
     m_bitmap = wxBitmap(image);
 
-    return m_bitmap.Ok();
+    return m_bitmap.IsOk();
 }
 
 void wxBitmapDataObject::DoConvertToPng()
 {
-    if ( !m_bitmap.Ok() )
+    if ( !m_bitmap.IsOk() )
         return;
 
     wxCHECK_RET( wxImage::FindHandler(wxBITMAP_TYPE_PNG) != NULL,