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RegQueryValueEx

Posted on 1997-11-16
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Last Modified: 2010-04-04
I can't seem to get this function work properly.
Can anyone give me an example (including variabledeclaration) to get the value from HKEY_LOCAL_MACHINE\SOFTWARE\MYCOMP\MYAppl\WorkingDir ?
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Question by:lizzzard
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JimBob091197 earned 50 total points
ID: 1350678
Hi

Here is an example which reads the content of the "CommonFilesDir" value under "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion"

procedure TForm1.Button1Click(Sender: TObject);
var
  hReg: Integer;
  dwType, BufSize: DWORD;
  pBuf: array[0..MAX_PATH] of Char;
begin
  if RegOpenKey(HKEY_LOCAL_MACHINE, 'Software\Microsoft\Windows\CurrentVersion', hReg) = ERROR_SUCCESS then begin
    BufSize := MAX_PATH;
    RegQueryValueEx(hReg, 'CommonFilesDir', nil, @dwType, @pBuf, @BufSize);
    if (dwType = REG_SZ) then ShowMessage(string(PChar(@pBuf)));
    RegCloseKey(hReg);
  end;
end;

Regards,
JB
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