[fpc-devel] THandle and 64bit platforms

[Peter Vreman]

>>
>>> Hi,
>>>
>>> From what I understand from the definition of THandle in
>>> sysunixh.inc it is defined as a LongInt, even on 64 bit platforms.
>>> Currently I'm porting Lazarus to x64 and there I need a 64bit
>>> THandle, how to solve it ?
>>
>>File descriptors are still 32bit on x86_64, therefor Thandle=32bit.
>
> A THandle is more than a file descriptor alone.
> Since the LCL is VCL compatible and thus MS biassed, there are more
> THandles than filedescriptors alone. To keep code compatible and portable,
> I need a 64 bit THandle on 64 bit platforms. (on win64 a handle is also
> 64bit).
> Or would you suggest to use HANDLE for a 64bit handle and THandle for
> 32bit ?

THandle is platform dependent. On win64 THandle=QWord.

Currently Thandle=longint for unix, but Thandle=DWord for win32.