I install a service/daemon, which needs to be killed before uninstall and reinstall.
I already found out how to do it for uninstall:
[UninstallRun]
Filename: "taskkill"; Parameters: "/im ""My Service.exe"" /f"; Flags: runhidden
The [Run]
section, however, runs after install, so I can't use it for that. What is the best way to kill the process using taskkill
before install?
Please note that I specifically want to kill the process. A more complex solution using IPC offers no benefits in my case, I just want to execute taskkill
before installing a particular file.
I found a way using the BeforeInstall
parameter and a simple Pascal Script function in the code section. I added a string parameter so it can be reused for multiple processes.
[Files]
Source: "My Service 1.exe"; DestDir: "{app}"; Flags: ignoreversion; \
BeforeInstall: TaskKill('My Service 1.exe')
Source: "My Service 2.exe"; DestDir: "{app}"; Flags: ignoreversion; \
BeforeInstall: TaskKill('My Service 2.exe')
[Code]
procedure TaskKill(FileName: String);
var
ResultCode: Integer;
begin
Exec('taskkill.exe', '/f /im ' + '"' + FileName + '"', '', SW_HIDE,
ewWaitUntilTerminated, ResultCode);
end;