public IEnumerable <Out123.Driver> Drivers()
{
IntPtr namesPtr = Marshal.AllocHGlobal(Marshal.SizeOf <IntPtr>());
IntPtr descsPtr = Marshal.AllocHGlobal(Marshal.SizeOf <IntPtr>());
Out123.Errors error = Out123NativeMethods.Drivers(handle, namesPtr, descsPtr);
if (error != Out123.Errors.OK)
{
Marshal.FreeHGlobal(namesPtr);
Marshal.FreeHGlobal(descsPtr);
throw new Out123.ErrorException(this);
}
IntPtr namesPtrDeref = Marshal.ReadIntPtr(namesPtr);
IntPtr descsPtrDeref = Marshal.ReadIntPtr(descsPtr);
int offset = 0;
while (true)
{
IntPtr namePtr = Marshal.ReadIntPtr(namesPtrDeref, offset);
IntPtr descPtr = Marshal.ReadIntPtr(descsPtrDeref, offset);
if (namePtr == IntPtr.Zero)
{
yield break;
}
String name = Marshal.PtrToStringAnsi(namePtr);
String desc = Marshal.PtrToStringAnsi(descPtr);
Out123.Driver driver = new Out123.Driver(name, desc);
yield return(driver);
offset += Marshal.SizeOf <IntPtr>();
}
}