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 != 52)
  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 2;
  68                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "bool2")) != 0)
  69                         return 3;
  70                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "b")) != 2)
  71                         return 4;
  72                 if (Marshal.ReadInt16 (p, 16) != 6)
  73                         return 5;
  74                 if (Marshal.ReadInt16 (p, 18) != 5)
  75                         return 6;
  76                 if (Marshal.ReadByte (p, 20) != 97)
  77                         return 7;
  78                 if (Marshal.ReadByte (p, 21) != 98)
  79                         return 8;
  80                 if (Marshal.ReadByte (p, 22) != 99)
  81                         return 9;
  82                 if (Marshal.ReadByte (p, 23) != 0)
  83                         return 10;
  84                 if (Marshal.ReadInt32 (p, 24) != 3)
  85                         return 11;
  86                 if (Marshal.ReadInt32 (p, 28) != 4)
  87                         return 12;
  88                 if (Marshal.ReadInt32 (p, 32) != 10)
  89                         return 13;
  90                 if (Marshal.ReadInt32 (p, 36) != 11)
  91                         return 14;
  92                 if (Marshal.ReadInt32 (p, (int)Marshal.OffsetOf (t, "s2")) == 0)
  93                         return 15;
  94
  95                 SimpleStruct cp = (SimpleStruct)Marshal.PtrToStructure (p, ss.GetType ());
  96
  97                 if (cp.a != 1)
  98                         return 16;
  99
 100                 if (cp.bool1 != true)
 101                         return 17;
 102
 103                 if (cp.bool2 != false)
 104                         return 18;
 105
 106                 if (cp.b != 2)
 107                         return 19;
 108
 109                 if (cp.a1 [0] != 6)
 110                         return 20;
 111
 112                 if (cp.a1 [1] != 5)
 113                         return 21;
 114
 115                 if (cp.s1 != "abc")
 116                         return 22;
 117
 118                 if (cp.emb1.a != 3)
 119                         return 23;
 120
 121                 if (cp.emb1.b != 4)
 122                         return 24;
 123
 124                 if (cp.emb2.a != 10)
 125                         return 25;
 126
 127                 if (cp.emb2.b != 11)
 128                         return 26;
 129
 130                 if (cp.s2 != "just a test")
 131                         return 27;
 132
 133                 if (cp.x != 1.5)
 134                         return 28;
 135
 136                 return 0;
 137         }
 138 }
 139