现有一C++6.0的dll文件，其调用函数原型为：double * filtereddata(double *src,int filterstye=1)
我在C#中该如何写其调用函数，
我在声明中使用的是：
[DllImport("sigproc.dll", EntryPoint = "filtereddata", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        unsafe public static extern double[] filtereddata(double* src, int filterstye);
调用时：{
          double[] d = new double[2500];
            for (int j = 0; j < 10; j++)
            {
                for (int ii = 0; ii < 250; ii++)
                {
                    d[i] =Math.Sin(Math.PI * (double)2 *ii / (double)250);
                    //MessageBox.Show(d[i].ToString());
                }

            }

            fixed (double* k = d)
            {
                double[] mm = filtereddata(k, 1);
            }  
}
出错!

[ 本帖最后由 xxp5310776 于 2010-5-24 10:43 编辑 ]

还是不行啊！

我找到了原因，问题已经解决。谢谢 athenalux 给的提示！