mono/tests/marshal2.cs

   1 using System;
   2 using System.Runtime.InteropServices;
   3
   4 public class Test {
   5
   6
   7         [StructLayout (LayoutKind.Sequential)]
   8         public class SimpleObj {
   9                 public int a;
  10                 public int b;
  11
  12                 public void test () {}
  13         }
  14
  15         [StructLayout (LayoutKind.Sequential)]
  16         public struct SimpleStruct2 {
  17                 public int a;
  18                 public int b;
  19         }
  20
  21         [StructLayout (LayoutKind.Sequential, CharSet=CharSet.Ansi)]
  22         public struct SimpleStruct {
  23                 public int a;
  24                 public bool bool1;
  25                 public bool bool2;
  26                 public int b;
  27                 [MarshalAs (UnmanagedType.ByValArray, SizeConst=2)] public short[] a1;
  28                 [MarshalAs (UnmanagedType.ByValTStr, SizeConst=4)] public string s1;
  29                 public SimpleStruct2 emb1;
  30                 public SimpleObj emb2;
  31                 public string s2;
  32                 public double x;
  33         }
  34
  35         public unsafe static int Main () {
  36                 SimpleStruct ss = new SimpleStruct ();
  37                 int size = Marshal.SizeOf (typeof (SimpleStruct));
  38
  39                 Console.WriteLine ("SimpleStruct:" + size);
  40                 if (size != 56)
  41                         return 1;
  42
  43                 IntPtr p = Marshal.AllocHGlobal (size);
  44                 ss.a = 1;
  45                 ss.bool1 = true;
  46                 ss.bool2 = false;
  47                 ss.b = 2;
  48                 ss.a1 = new short [2];
  49                 ss.a1 [0] = 6;
  50                 ss.a1 [1] = 5;
  51                 ss.s1 = "abcd";
  52                 ss.emb1 = new SimpleStruct2 ();
  53                 ss.emb1.a = 3;
  54                 ss.emb1.b = 4;
  55                 ss.emb2 = new SimpleObj ();
  56                 ss.emb2.a = 10;
  57                 ss.emb2.b = 11;
  58                 ss.s2 = "just a test";
  59                 ss.x = 1.5;
  60
  61                 Marshal.StructureToPtr (ss, p, false);
  62                 Type t = ss.GetType ();
  63
  64                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "a")) != 1)
  65                         return 1;
  66                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "bool1")) != 1)
  67                         return 1;
  68                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "bool2")) != 0)
  69                         return 1;
  70                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "b")) != 2)
  71                         return 1;
  72                 if (Marshal.ReadInt16 (p, 16) != 6)
  73                         return 1;
  74                 if (Marshal.ReadInt16 (p, 18) != 5)
  75                         return 1;
  76                 if (Marshal.ReadByte (p, 20) != 97)
  77                         return 1;
  78                 if (Marshal.ReadByte (p, 21) != 98)
  79                         return 1;
  80                 if (Marshal.ReadByte (p, 22) != 99)
  81                         return 1;
  82                 if (Marshal.ReadByte (p, 23) != 0)
  83                         return 1;
  84                 if (Marshal.ReadInt32 (p, 24) != 3)
  85                         return 1;
  86                 if (Marshal.ReadInt32 (p, 28) != 4)
  87                         return 1;
  88                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "s2")) == 0)
  89                         return 1;
  90
  91                 SimpleStruct cp = (SimpleStruct)Marshal.PtrToStructure (p, ss.GetType ());
  92
  93                 if (cp.a != 1)
  94                         return 2;
  95
  96                 if (cp.bool1 != true)
  97                         return 2;
  98
  99                 if (cp.bool2 != false)
 100                         return 2;
 101
 102                 if (cp.b != 2)
 103                         return 2;
 104
 105                 if (cp.a1 [0] != 6)
 106                         return 2;
 107
 108                 if (cp.a1 [1] != 5)
 109                         return 2;
 110
 111                 if (cp.s1 != "abc")
 112                         return 3;
 113
 114                 if (cp.emb1.a != 3)
 115                         return 2;
 116
 117                 if (cp.emb1.b != 4)
 118                         return 2;
 119
 120                 if (cp.emb2.a != 10)
 121                         return 2;
 122
 123                 if (cp.emb2.b != 11)
 124                         return 2;
 125
 126                 if (cp.s2 != "just a test")
 127                         return 2;
 128
 129                 if (cp.x != 1.5)
 130                         return 2;
 131
 132                 return 0;
 133         }
 134 }
 135