Re: CopyMemory API problem

Article View: borland.public.cppbuilder.nativeapi

Article #10495

Back to borland.public.cppbuilder.nativeapi Previous Next

#10495

From: Bob Gonder
Date: Mon, 12 Apr 2004 23:09

28 lines
1814 bytes

Martin C wrote:

>I am using the following code to free memory on my machine, although I
>always get access violation once the CopyMemory function is reached, can
>someone help me please and tell me what exactly I am doing wrong.

>int Granularity;
>  AnsiString strTemp;

>  strTemp = Granularity;

Can you do that? Assign an int to a string?
And why convert it back again?

>  ReadAddress = StrToInt(strTemp);
>  ShowMessage(Granularity);
>
>    CopyMemory(&WriteAddress, &ReadAddress, Granularity); // Error shows
>here

Check the actual values of all three parameters.
You might be trying to access memory you aren't entitled to.

Also check to make sure you arn't doing this:
{help}
"If the source and destination blocks overlap, the results are
undefined. For overlapped blocks, use the MoveMemory function. "

Technical Details

Message-ID: <5v7m701261mpcjc68up9v6m226cd698sq8@4ax.com>

Path:

arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!nntp-relay.ihug.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail

References: <40786e5f@newsgroups.borland.com>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 10cc67,aeea745eda602570
X-Google-Attributes: gid10cc67,public
X-Google-ArrivalTime: 2004-04-12 16:31:10 PST
From: Bob Gonder <notbg@notmindspring.invalid>
Newsgroups: borland.public.cppbuilder.nativeapi
Subject: Re: CopyMemory API problem
Date: Mon, 12 Apr 2004 16:09:53 -0700
Organization: MindSpring Enterprises, Inc.
Reply-To: notbg@notmindspring.invalid
Message-ID: <5v7m701261mpcjc68up9v6m226cd698sq8@4ax.com>
References: <40786e5f@newsgroups.borland.com>
X-Newsreader: Forte Agent 1.93/32.576 English (American)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
NNTP-Posting-Host: 4.227.148.94
X-Trace: newsgroups.borland.com 1081811391 4.227.148.94 (12 Apr 2004 16:09:51 -0800)
Lines: 31
Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!nntp-relay.ihug.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail

Reply to Parent Message