Use PInvoke instead. If it were a class it would have utilized the ATL helper methods and an entry point would have been found. Nick -- modified at 9:15 Tuesday 25th July, 2006

thank you for your answer. but I cann't do it. because the DLL is already exist. it was from a video capturer SDK. the head file is defined as in the article. and all functions have been defined in a class. if i use [DlImport],compile is right, but when i run, an exception shown with"can not found the entrypoint from .dll". i think the trouble is the class defination. so i want to know how to use the class from the dll.

i have the dllimport as below: [DllImport("DS40xxSDK.dll")] private static extern int SetOsdDisplayModeEx(IntPtr hChannelHandle,int color,bool Translucent,int param,int nLineCount,ushort[][] FormatArray); and call it as below: private void myFunc() { int number=OSDStrings.Length; ushort [] [] FormatArray=new ushort[number][]; for(int i=0;i

Unless you have some special hardware supplying the data, I doubt the bus could even keep up feeding these drives data to burn all at the same time! RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome