Solved

Using GetSystemInfo() function from Win32API

Posted on 1998-06-17
3
412 Views
Last Modified: 2012-05-04
When I call the function GetSystemInfo()from an OnButtonClick() function, I get "Unhandled Exception - Access Violation" Error when exiting the OnButtonClick()function. If I "comment out" the GetSystemInfo() function, the error goes away.
0
Comment
Question by:electrick
  • 2
3 Comments
 
LVL 22

Accepted Solution

by:
nietod earned 100 total points
ID: 1166126
answer coming.
0
 
LVL 22

Expert Comment

by:nietod
ID: 1166127
I'm just going to take a guess here, but I suspect that you are not passing a pointer to an existing SYSTEM_INFO structure.  See you need to allocate a SYSTEM_INFO structore (globally, lovcally, or dynamically, but local is the ussual way) and pass a pointer to that structure.  Then windows will fill in the structure.  You should do something like

SYSTEM_INFO SysInf;
GetSystemInfo(&SysInf);

you should not do

SYSTEM_INFO *SysInfPtr;
GetSystemInfo(SysInfPtr);

that will cause an exception because the pointer passed doesn't actually point to a SYSTEM_INFO structure.  It is just a random pointer.

0
 

Author Comment

by:electrick
ID: 1166128
You are correct Sir. It worked !
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Introduction This article is a continuation of the C/C++ Visual Studio Express debugger series. Part 1 provided a quick start guide in using the debugger. Part 2 focused on additional topics in breakpoints. As your assignments become a little more …
C++ Properties One feature missing from standard C++ that you will find in many other Object Oriented Programming languages is something called a Property (http://www.experts-exchange.com/Programming/Languages/CPP/A_3912-Object-Properties-in-C.ht…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

911 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

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now