IntPtr gsHandle = IntPtr.Zero;
            StdioCallBack incb = new StdioCallBack(gsdll_stdin);
            StdioCallBack outcb = new StdioCallBack(gsdll_stdout);
            StdioCallBack errcb = new StdioCallBack(gsdll_stderr);
            intReturn = gsapi_set_stdio(gsHandle, incb, outcb, errcb);

            UnityEngine.Debug.Log("incb: " + incb);
            UnityEngine.Debug.Log("outcb: " + outcb);
            UnityEngine.Debug.Log("errcb: " + errcb);
            UnityEngine.Debug.Log("intReturn: " + intReturn);


returned


incb: PdfToImage.StdioCallBack

(Filename: C:/buildslave/unity/build/artifacts/generated/Metro/runtime/DebugBindings.gen.cpp Line: 51)


outcb: PdfToImage.StdioCallBack

(Filename: C:/buildslave/unity/build/artifacts/generated/Metro/runtime/DebugBindings.gen.cpp Line: 51)


errcb: PdfToImage.StdioCallBack

(Filename: C:/buildslave/unity/build/artifacts/generated/Metro/runtime/DebugBindings.gen.cpp Line: 51)


intReturn: -100

(Filename: C:/buildslave/unity/build/artifacts/generated/Metro/runtime/DebugBindings.gen.cpp Line: 51)


reached eof

(Filename: C:/buildslave/unity/build/artifacts/generated/Metro/runtime/DebugBindings.gen.cpp Line: 51)