Get/SetEnvironmentVariable

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3 total messages Started by JD Fri, 14 Mar 2003 04:32

#17541

Author: JD
Date: Fri, 14 Mar 2003 04:32

17 lines
1291 bytes

I'm trying to track a bug and need confirmation that I'm using
these API's correctly please:

  AnsiString oldPath, newPath;

  GetEnvironmentVariable( "PATH", oldPath, MAXPATH );
  newPath = oldPath + ";D:\\Test Folder";
  SetEnvironmentVariable( "PATH", newPath, newPath.Length() );

  // do my stuff

  SetEnvironmentVariable( "PATH", oldPath, oldPath.Length() );

TIA

~ JD

Re: Get/SetEnvironmentVariable

#17542

Author: Remy Lebeau (TeamB)
Date: Fri, 14 Mar 2003 04:59

39 lines
2187 bytes

"JD" <nospam@nospam.com> wrote in message
news:3e715b74$1@newsgroups.borland.com...

> I'm trying to track a bug and need confirmation that
> I'm using these API's correctly please:

Sorry, you're not.

>   GetEnvironmentVariable( "PATH", oldPath, MAXPATH );

You can't pass an AnsiString as a parameter directly.  The function expects
an actual buffer instead.  You can do one of the following instead:

    char buffer[MAX_PATH+1] = {0};
    GetEnvironmentVariable( "PATH", buffer, MAX_PATH );
    oldPath = buffer;

Or:

    AnsiString oldPath = AnsiString::StringOfChar(' ', MAX_PATH);
    GetEnvironmentVariable( "PATH", oldPath.c_str(), MAXPATH );

>   SetEnvironmentVariable( "PATH", newPath, newPath.Length() );

Same here.  You can't pass an AnsiString directly, you need an actual
buffer.  In this case, you can pass in the return value of the c_str()
method.

    SetEnvironmentVariable( "PATH", newPath.c_str(), newPath.Length() );

>   SetEnvironmentVariable( "PATH", oldPath, oldPath.Length() );

Same here as well:

    SetEnvironmentVariable( "PATH", oldPath.c_str(), oldPath.Length() );


Gambit

Re: Get/SetEnvironmentVariable

#17543

Author: JD
Date: Fri, 14 Mar 2003 05:07

7 lines
1016 bytes

"Remy Lebeau \(TeamB\)" <gambit47@yahoo.com> wrote:
> Sorry, you're not.

Thank you kindly Sir.

~ JD

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