mono/tests/pinvoke17.cs

   1 using System;
   2 using System.Runtime.InteropServices;
   3
   4 [StructLayout (LayoutKind.Sequential)]
   5 public class OSVersionInfo
   6 {
   7         public int a;
   8         public int b;
   9 }
  10
  11 [StructLayout (LayoutKind.Sequential)]
  12 public struct OSVersionInfo2
  13 {
  14         public int a;
  15         public int b;
  16 }
  17
  18
  19 public class LibWrap
  20 {
  21         [DllImport ("libtest", EntryPoint="MyGetVersionEx")]
  22         public static extern int GetVersionEx ([In, Out] OSVersionInfo osvi);
  23
  24     [DllImport ("libtest")]
  25         public static extern int BugGetVersionEx (int a, int b, int c, int d, int e, int f, int g, int h, [In, Out] OSVersionInfo osvi);
  26
  27         [DllImport ("libtest", EntryPoint="MyGetVersionEx")]
  28         public static extern int GetVersionEx2 (ref OSVersionInfo2 osvi);
  29 }
  30
  31 public class Test
  32 {
  33         public static int Main()
  34         {
  35                 Console.WriteLine( "\nPassing OSVersionInfo as class" );
  36
  37                 OSVersionInfo osvi = new OSVersionInfo();
  38                 osvi.a = 1;
  39                 osvi.b = 2;
  40
  41                 if (LibWrap.GetVersionEx (osvi) != 5)
  42                         return 1;
  43
  44                 if (osvi.a != 2)
  45                         return 2;
  46
  47                 if (osvi.b != 3)
  48                         return 3;
  49
  50                 Console.WriteLine( "A: {0}", osvi.a);
  51                 Console.WriteLine( "B: {0}", osvi.b);
  52
  53                 Console.WriteLine( "\nPassing OSVersionInfo as struct" );
  54
  55                 OSVersionInfo2 osvi2 = new OSVersionInfo2();
  56                 osvi2.a = 1;
  57                 osvi2.b = 2;
  58
  59                 if (LibWrap.GetVersionEx2 (ref osvi2) != 5)
  60                         return 4;
  61
  62                 if (osvi2.a != 2)
  63                         return 5;
  64
  65                 if (osvi2.b != 3)
  66                         return 6;
  67
  68                 Console.WriteLine( "A: {0}", osvi2.a);
  69                 Console.WriteLine( "B: {0}", osvi2.b);
  70
  71                 Console.WriteLine ("Testing with extra parameters at the beginning");
  72
  73                 OSVersionInfo osvi3 = new OSVersionInfo();
  74                 osvi3.a = 1;
  75                 osvi3.b = 2;
  76
  77                 if (LibWrap.BugGetVersionEx (10, 10, 10, 10, 20, 20, 20, 20, osvi3) != 5)
  78                         return 7;
  79
  80                 if (osvi3.a != 2)
  81                         return 8;
  82
  83                 if (osvi3.b != 3)
  84                         return 9;
  85
  86                 Console.WriteLine( "A: {0}", osvi.a);
  87                 Console.WriteLine( "B: {0}", osvi.b);
  88
  89                 Console.WriteLine( "\nPassing OSVersionInfo as struct" );
  90
  91                 return 0;
  92         }
  93 }
  94
  95
  96