You cannot return a pointer to a local variable since those are allocated on the stack (and the stack may get destroyed when the function returns). You’d need to allocate memory on the heap (preferably using CoTaskMemAlloc so the CLR can free up the memory later) on your C function and return a pointer to … Read more
Try Following : using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace ConsoleApplication49 { class Program { [DllImport(“XXXXX.dll”, CallingConvention = CallingConvention.Cdecl)] public static extern int Compress(int compressLevel, IntPtr srcBuf, IntPtr outBuf, IntPtr size); static void Main(string[] args) { int compressLevel = 0; string input = “The quick brown fox jumped over the lazy … Read more
I finally found the solution to my problems, and am posting this for anyone who would need some clarification: First, as David pointed out, simply treating the referenced argument as a pointer and assigning it the array’s address does not work. You have to copy the entire array contents into the referenced array. Easily fixed. … Read more