Copy string ar a specified memory location

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I have a string and i want to copy at specified memory location.
Suppose i have a pre-allocated memory represented by following unsafe code:

char* logFile

I have a generated string which contains the name of log file.
I want to copy that string on location represented by char*.

Please help me on this.

Also i have to copy specified number of characters from a given location
to specified location.

The code in delphi looks something like:

StrLCopy(msg, PChar(gsRootErrorMsg), MAX_ERR_MESSAGE);

where msg is character pointer:msg: PChar
and gsRootErrorMsg is string.

Help would be really appreciated.
Thanks.

Posted 13-Jan-11 9:38am

Member 4581741

Updated 13-Jan-11 12:00pm

dan!sh

v3

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Manfred Rudolf Bihy 13-Jan-11 15:46pm

I'm sure you have a reason for trying to do something like that from managed code. Can you enlighten us what exactly you're trying to achieve? Thanks!

Member 4581741 14-Jan-11 8:40am

No .. i can use unmanaged code too.
I just want to copy the content located at source memory location to destination memory location x no of characters.

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Espen Harlinn · Answer 1 · 2011-01-13T09:46:00

Use c++/cli or interop, easier and less error prone. See:
Consuming Unmanaged DLL Functions[^]

Here is a small example on exporting dll functions from Delphi:
http://delphi.about.com/od/windowsshellapi/a/dll_basics.htm[^]

example:

C#

using System.Runtime.InteropServices;

public class Win32 {
     [DllImport("user32.dll", CharSet=CharSet.Auto)]
     public static extern IntPtr MessageBox(int hWnd, String text,
                     String caption, uint type);
}

public class HelloWorld {
    public static void Main() {
       Win32.MessageBox(0, "Hello World", "Platform Invoke Sample", 0);
    }
}

Regards
Espen Harlinn