Script help

[Flaminchiten]

I wrote a script to stop a process from running then call uninstall on my program but it does not appear to be working. I have put in message boxes to check that it is hitting inside the if statements and it seems to be executing all of the code....but nothing gets shut down or uninstalled.

exePath = "";
exePath = INSTALLDIR ^ "MyApp.exe";
LongPathToQuote(exePath,FALSE);

// check if the file is in use
if (Is (FILE_EXISTS, exePath) = TRUE) then

hWnd = FindWindow("", "My App");
if (hWnd != 0) then
PostMessage(hWnd, WM_QUIT, 0, 0);
endif;

// if the file exists call uninstall on it
LaunchAppAndWait("msiexec.exe","/quiet /uninstall {MyProductCode}",WAIT);
endif;


Any help is greatly appreciated, Thank you.

[dan_galender]

Is this a Basic MSI project with your code in an InstallScript Custom Action?

If so, Where is this code sequenced? Have you tried generating a log file?

In either case, you might also capture the return code from the LaunchAppAndWait call and display it.

One other point: Looking to see if a file exists is different from seeing if the file is in use. To see if the file is in use, look at the Is function with the FILE_LOCKED parameter.

[Flaminchiten]

Yes it is a basic MSI and the custom action is sequenced right after this event 'SetARPINSTALLLOCATION'

I will capture the return from the LaunchAppAndWait then display it to get a better feel for what is going on.

I was using the Is FILE_LOCKED then calling EXIT on exePath, but it was not working and found the code I am using now on the forums here.

[Flaminchiten]

I added this section of code to replace the FindWindow stuff, it says it completes successfully but the program does not exit.


if (Is (FILE_LOCKED, exePath)) then
nreturn = Is(EXIT, "My App");
MessageBox("EXIT = " + FormatMessage(nreturn), INFORMATION);
endif;

[dan_galender]

I don't see EXIT as a valid parameter to pass to the Is function. Most likely that's the problem with the return code.