using VC++ 6.0 components in C#

thanks a lot, i got the solution i was using a third party component in my compnent and i was using IDipatch to type cast out parameter of that componenets inteface method like this IMYPtr *ptr; somePtr->getFactory((IDispatch**)&ptr) this was the problem. in C# when i was using component,there was some layout related problem, and getting mangling pointer to above ste.when i was using pointer it was crashing, though it was not null. work around for this is like this IMYPtr *ptr; IDispatch *pdisp; somePtr->getFactory(&pdisp); pdisp->QueryInterface(__uuidof(IMYPtr),(void**)&ptr);

// BEFORE PAGE_LOAD ETC #region Dll Imports [DllImport("C:\\WINDOWS\\system32\\myDll.dll", EntryPoint="IsByteArray", ExactSpelling=false, CallingConvention=CallingConvention.StdCall)] static extern int IsFile( byte[] pbByteArray, int cbByteArray); [DllImport("C:\\WINDOWS\\system32\\myDll.dll", EntryPoint="IsCharArray", ExactSpelling=false, CallingConvention=CallingConvention.StdCall)] static extern int IsCharFile( char[] pbCharArray, int cbCharArray); #endregion private void test () { int TheTest = IsByteArray(byarry) }

that will be great help

I've did this about a year ago anf have the code somewhere, will try and get it for you