Re: [問題] C# call win32 API

[pico2k (風月)]

 sample code (using managed code)
 ===========================================
 import System.Runtime.InteropServices;
 ...
 public static extern ulong abc
 (string Disk, ulong Session, IntPtr List,out ulong size);
 ...

 //Call abc
 ulong s = 32;
 String disk = "A";
 ulong r = 0;
 ulong Session = 1;
 try{
    IntPtr ptr = Marshal.AllocHGlobal(s);
    r = abc(disk,Session,ptr,s);
 }
 catch(Exception ex){
    ...
 }
 finally{
    if (ptr !=IntPtr.Zero){
        Marshal.FreeHGlobal(ptr);
    }
 }

 ps.在C#裡面,最好少用unmanaged code...

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