Solved

Converting Windows HANDLE data type to Visual C#

Posted on 2009-07-06
1
1,036 Views
Last Modified: 2012-05-07
I want to convert the following line to Visual C# code.

HANDLE bob = INVALID_HANDLE_VALUE;

So I need a C# equivalent for HANDLE
And I want to define INVALID_HANDLE_VALUE as a C# constant.


Notes:
1. INVALID_HANDLE_VALUE is defined in WinBase.h thus;
#define INVALID_HANDLE_VALUE ((HANDLE)(LONG_PTR)-1)   in WinBase.h

2. HANDLE is defined in windows.h
0
Comment
Question by:rangers99
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 12

Accepted Solution

by:
williamcampbell earned 125 total points
ID: 24788804
public const int INVALID_HANDLE_VALUE = -1;

    IntPtr hFile = CreateFile(...);
    if (hFile.ToInt32() == INVALID_HANDLE_VALUE)
    {
        // invalid handle returned
    }

or

 IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Examines three attack vectors, specifically, the different types of malware used in malicious attacks, web application attacks, and finally, network based attacks.  Concludes by examining the means of securing and protecting critical systems and inf…
The goal of this video is to provide viewers with basic examples to understand how to create, access, and change arrays in the C programming language.
The goal of this video is to provide viewers with basic examples to understand and use conditional statements in the C programming language.

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question