png_warning

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
  1. void png_warning(png_const_structrp png_ptr, png_const_charp warning_message)
    extern (C) nothrow @nogc
    static if(PNG_WARNINGS_SUPPORTED)
    void
    png_warning
  2. void png_warning(S1 s1, S2 s2)

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