Inno Setup检测是否已安装Apache

Question

Is there a foolproof way to detect using Inno Setup if Apache for Windows is installed on a computer? I'm using the Apache lounge version ( https://www.apachelounge.com/download/ ) which doesn't have a built-in installer but it does install a specific service if needed.

I can search whether that Windows service is present on the machine, but I'm afraid that other Apache versions might install a different service or no service at all (but it may still be running in the background and interfering).

Answer 1

You can check for any running process whose name includes "apache" keyword (even services are processes).

You can use the code from this answer:
How to check with Inno Setup, if a process is running at a Windows 2008 R2 64bit?

Just replace the query with:

Format('SELECT Name FROM Win32_Process Where Name like "%%%s%%"', [FileName])

And then you can use it like:

function InitializeSetup(): Boolean;
begin
  Result := True;
  if IsAppRunning('apache') then
  begin
    MsgBox('Apache is installed and running, cannot proceed.', mbError, MB_OK);
    Result := False;
  end;
end;