🚀 go-pugleaf

"dESFasado" <nospame@anymore> wrote in message
news:oprzmkrdfi3sxi43@localhost...
> why HWND handle in win32 API function prototypes are void *???

That is the most common way for a library to provide instances of its own
custom data types without making the calling applications actually know
anything about the internals of the data types.  Many of the Win32 API
handles are void*, but actually point to structures inside their respective
libraries.  In fact, a lot of third-party APIs work that way as well.  It
allows the libraries to define internally what they should do with their own
allocated memory.  All languages that can access DLLs have some way of
receiving/specifying memory addresses.  The library returns a memory address
(that is all a void* is), and the application then passes that memory
address back to the library when it needs to do something.  The library does
all the work of allocating, accessing, and releasing the actual memory being
pointed to.


Gambit