Re: Check for redundancy

[Yuri Khan <yuri.v.khan@gmail.com>]

On Fri, Jul 3, 2015 at 5:37 AM, Robert Thorpe
<rt@robertthorpeconsulting.com> wrote:

> It's also useful in MS Window programming where everything is some kind
> of handle.  Even then though, I would only use it for the user
> interface, not every variable as you say.

In early Windows programming, all handles were just void*, which made
them all seemingly different for the programmer and identical to the
compiler.

Nowadays (since ≈2002?) the SDK defines a strict mode, where different
kinds of handles become pointers to different tag structure types:

struct tagWND;  // declared but not defined
typedef struct tagWND* HWND;

With a sufficiently strongly typed language and compiler, the
programmer is protected against accidentally using a HWND as a
HBITMAP.