IntPtr

Question

Hello everyone Two questions about IntPtr http://msdn2.microsoft.com/en-us/library/system.intptr(VS.80).aspx 1. does it mean in the internal SDK API implementation System.IO.FileStream IntPtr is used to hold the native file handle? 2. when do we need to use IntPtr? We have easy to use class like StreamWriter when and why do we need to use IntPtr? thanks in advance George

George George · Answer

Cool Alan! regards George

Alan · Answer

Yes an IntPtr is to used to hold a native file handle in the FileStream class. It's also used to hold native window handles - for example the Control class has a Handle property which returns an IntPtr. IntPtrs are also used extensively when interoperating with unmanaged code such as when calling unmanaged functions using P/Invoke (DllImport).