Restricts the generated PDF file to version. See
getPDFVersions() for a list of available
version values that can be used here.
This function should only be called before any drawing
operations have been performed on the given surface.
The simplest way to do this is to call this function
immediately after creating the surface
Restricts the generated PDF file to version. See getPDFVersions() for a list of available version values that can be used here.
This function should only be called before any drawing operations have been performed on the given surface. The simplest way to do this is to call this function immediately after creating the surface