How to modify the PATH variable

Windows with Delphi
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How to modify the PATH variable

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Use the following simple function ..
E.g. like this:

SetSystemEnvironmentVariable ('PATH', 'c:\windows;c:\programs\myapp');

procedure SetSystemEnvironmentVariable (const name, value : string);
var
  rv : DWORD;
begin
  with TRegistry.Create do
  try
    RootKey := HKEY_LOCAL_MACHINE;
    OpenKey ('SYSTEM\CurrentControlSet\Control\SessionManager\Environment', False);
    WriteExpandString (name, value);
    SendMessageTimeout (HWND_BROADCAST, WM_SETTINGCHANGE, 0,
	                    LParam (PChar ('Environment')),
	                    SMTO_ABORTIFHUNG, 5000, rv);
    finally
      Free
    end
end;

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