And more recently, GCC visibility in newer versions of GCC. It decorates class declarations with the correct attributes to be exported (and on Windows imported) in shared libraries (DLLs, .so, .dylib etc). Internal classes do not need it, but anything that can be called as part of our API should have this macro before it.<br>
<br><div class="gmail_quote">On Sat, Jan 30, 2010 at 7:47 PM, Bill Lorensen <span dir="ltr"><<a href="mailto:bill.lorensen@gmail.com">bill.lorensen@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
It is used to handle dll import/export on Windows systems.<br>
<div><div></div><div class="h5"><br>
On Sat, Jan 30, 2010 at 7:28 PM, David Doria <<a href="mailto:daviddoria%2Bvtk@gmail.com">daviddoria+vtk@gmail.com</a>> wrote:<br>
> I see this sometimes:<br>
><br>
> class VTK_IO_EXPORT vtkJPEGWriter : public vtkImageWriter<br>
><br>
> I'm just curious what it does.<br>
><br>
> Thanks,<br>
><br>
> David<br>
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