/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
if (this.Handle != IntPtr.Zero)
{
Twain32.GlobalFree(this.Handle);
this.Handle = IntPtr.Zero;
}
}
/// <summary>
/// Возвращает результат для указаной возможности.
/// </summary>
/// <returns>Экземпляр TwArray, TwEnumeration, _TwRange или _TwOneValue.</returns>
public object GetValue()
{
IntPtr _handle = Twain32.GlobalLock(this.Handle);
try {
switch (this.ConType)
{
case TwOn.Array:
_TwArray _res = Marshal.PtrToStructure(_handle, typeof(_TwArray)) as _TwArray;
switch (_res.ItemType)
{
case TwType.Int8:
case TwType.UInt8: {
byte[] _array = new byte[_res.NumItems];
Marshal.Copy((IntPtr)(_handle.ToInt32() + Marshal.SizeOf(typeof(_TwArray))), _array, 0, _array.Length);
return(new TwArray <byte>(_res, _array));
}
case TwType.Int16:
case TwType.UInt16:
case TwType.Bool: {
short[] _array = new short[_res.NumItems];
Marshal.Copy((IntPtr)(_handle.ToInt32() + Marshal.SizeOf(typeof(_TwArray))), _array, 0, _array.Length);
return(new TwArray <short>(_res, _array));
}
case TwType.Int32:
case TwType.UInt32:
case TwType.Fix32: {
int[] _array = new int[_res.NumItems];
Marshal.Copy((IntPtr)(_handle.ToInt32() + Marshal.SizeOf(typeof(_TwArray))), _array, 0, _array.Length);
return(new TwArray <int>(_res, _array));
}
}
break;
case TwOn.Enum:
_TwEnumeration _res2 = Marshal.PtrToStructure(_handle, typeof(_TwEnumeration)) as _TwEnumeration;
switch (_res2.ItemType)
{
case TwType.Int8:
case TwType.UInt8: {
byte[] _array = new byte[_res2.NumItems];
Marshal.Copy((IntPtr)(_handle.ToInt32() + Marshal.SizeOf(typeof(_TwEnumeration))), _array, 0, _array.Length);
return(new TwEnumeration <byte>(_res2, _array));
}
case TwType.Int16:
case TwType.UInt16:
case TwType.Bool: {
short[] _array = new short[_res2.NumItems];
Marshal.Copy((IntPtr)(_handle.ToInt32() + Marshal.SizeOf(typeof(_TwEnumeration))), _array, 0, _array.Length);
return(new TwEnumeration <short>(_res2, _array));
}
case TwType.Int32:
case TwType.UInt32:
case TwType.Fix32: {
int[] _array = new int[_res2.NumItems];
Marshal.Copy((IntPtr)(_handle.ToInt32() + Marshal.SizeOf(typeof(_TwEnumeration))), _array, 0, _array.Length);
return(new TwEnumeration <int>(_res2, _array));
}
}
break;
case TwOn.Range:
return(Marshal.PtrToStructure(_handle, typeof(_TwRange)));
case TwOn.One:
return(Marshal.PtrToStructure(_handle, typeof(_TwOneValue)));
}
return(null);
} finally {
IntPtr _res2 = Twain32.GlobalFree(_handle);
}
}