Beispiel #1
0
        public static void Ch7ModifyCh7Pointer()
        {
            //create objects to use
            var value       = new Ch7Pointer();
            var ch7StringAW = new Ch7StringAW
            {
                asValue = "BBBB".ToArray(),
                wsValue = "你你你你".ToArray(),
            };
            int iValue = 123;

            //alloc memory from process heap
            value.ch7StringAWPtr = Marshal.AllocHGlobal(Marshal.SizeOf(ch7StringAW));
            value.iValuePtr      = Marshal.AllocHGlobal(Marshal.SizeOf(iValue));

            //copy managed object memory to native heap
            Marshal.StructureToPtr(ch7StringAW, value.ch7StringAWPtr, false);
            Marshal.StructureToPtr(iValue, value.iValuePtr, false);

            //call method
            if (Ch7Native.Ch7ModifyCh7Pointer(value))
            {
                //copy native heap to managed object memory
                ch7StringAW = (Ch7StringAW)Marshal.PtrToStructure(value.ch7StringAWPtr, typeof(Ch7StringAW));
                iValue      = (int)Marshal.PtrToStructure(value.iValuePtr, typeof(int));
            }
            //do not forgot free native heap memory
            Marshal.FreeHGlobal(value.ch7StringAWPtr);
            Marshal.FreeHGlobal(value.iValuePtr);

            value.ch7StringAWPtr = IntPtr.Zero;
            value.iValuePtr      = IntPtr.Zero;
        }
Beispiel #2
0
 public static extern bool Ch7ModifyCh7Pointer([In, Out] Ch7Pointer value);