Return an ERRORLEVEL to a BAT file from a PB appTag(s): WinAPI/Registry
[External FUNCTION declaration] SUBROUTINE ExitProcess(ulong uExitCode) LIBRARY "kernel32.dll" [Powerscript] ExitProcess(50) // terminate the current application // with ERRORLEVEL 50
[BAT file example] echo off start /w myapp.exe if errorlevel 100 goto 100 if errorlevel 50 goto 50 echo exit code is 0 goto done :100 echo exit code is 100 goto done :50 echo exit code is 50 :done echo done.
One nice way to implement this is to have a global variable gul_rc with a default value of 0. This variable will be modified to contain a different value if needed. When executing the close event, a call is made to the ExitProcess subroutine passing the current value of gul_rc. Before it may be safer to call the Garbage collector to avoid some memory leaks because ExitProcess() is a rude way to terminate an application. You trigger the Garbage collector by calling the function GarbageCollect().
[close event of the application] Message.LongParm = 2 // return 2 as ERRORLEVEL