public struct GSVersion

    private static extern int gsapi_revision(ref GSVersion version, int len);

    public static void getVersion(ref GSVersion version)

        Ghostscript.GSVersion gsVer = new Ghostscript.GSVersion();

    private static extern int gsapi_revision(ref GSVersion version, int len);

    Declare Auto Function gsapi_revision Lib "gsdll32.dll" (ByRef pVer As GSVersion, ByVal pSize As Integer) As Integer

The gsapi_revision function takes a reference to a GSVersion structure.

    public GSVersion GSVer

        GSVersion gsVer = new GSVersion();

    Dim lVer As New GSVersion

public struct GSVersion

Public Structure GSVersion

Here is a sample of how the GSVersion structure is filled in by the gsapi_revision function.