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/msw/frame.cpp

@@ -938,7 +938,7 @@ WXLRESULT wxFrame::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lPara
         case WM_QUERYDRAGICON:
             {
                 const wxIcon& icon = GetIcon();
-                HICON hIcon = icon.Ok() ? GetHiconOf(icon)
+                HICON hIcon = icon.IsOk() ? GetHiconOf(icon)
                                         : (HICON)GetDefaultIcon();
                 rc = (WXLRESULT)hIcon;
                 processed = rc != 0;