Close running version of program before installing update (Inno Setup)

Question

This should be simple, I need to stop any previous version of my program from running when the installer starts.

Most people suggested making an exe wh

Answer 1

I have had success using WMIC :

procedure CurStepChanged(CurStep: TSetupStep);
var
    ResultCode: Integer;
    wmicommand: string;
begin
    // before installing any file
    if CurStep = ssInstall then
    begin
        wmicommand := ExpandConstant('PROCESS WHERE "ExecutablePath like ''{app}\%%''" DELETE');

        // WMIC "like" expects escaped backslashes
        StringChangeEx(wmicommand, '\', '\\', True);

        // you can/should add an "if" around this and check the ResultCode
        Exec('WMIC', wmicommand, '', SW_HIDE, ewWaitUntilTerminated, ResultCode);
    end;
end;

You can also do it in the InitializeSetup but if you do, keep in mind you don't have yet access to the {app} constant. My program doesn't ask for install path, but yours might.