What is an equivalent of HANDLE to be used in the IDL files.

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Hi,
I want to pass a HANDLE to the function. What the data types should be using.

In the C++,
I can use

uintptr_t

which will work for both win32 and x64.

What data type should be used in the IDL?

What I have tried:

Tried using

unsigned int

data type in the IDL. It does work for win32.

But for x64 it doesent work as size of HANDLE is greater than the unsigned int. In short, HANDLE cant just fit into the

C++

unsigned int

. How to resolve this issue?

Posted 20-Jan-18 5:51am

PrafullaVedante

Updated 20-Jan-18 7:01am

v2

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KarstenK · Accepted Answer · 2018-01-20T07:01:00

Use the biggest native data type, so some native 64-bit data as

C++

long long

should fit.

A handle is some a system resource managed by the operating system, so be careful with tem. A handle is NOT (REALLY NOT) a pointer. It can be, but never assume it. Always use system functions and NEVER ferget the cleanup (close or release) when done Read the article on wikipedia to understand it better. And dont use handles in different processes!!!