Run

GiD_Event_SelectGIDBatFile: must be used to switch the default batch file for special cases.
This procedure must return as a value the alternative pathname of the batch file. For example it is used as a trick to select a different analysis from a list of batch calculation files.

in fact can return a list with the batch_name and some extra parameters that will be added to the arguments of the call to run the calculation

proc GiD_Event_SelectGIDBatFile { dir basename } {
    ...body...
    set value ...
    return $value
}

example:

The default GiD bat arguments are the 4 provided, but are not compulsory, can provide others
here add a 5th extra argument with the number of threads specified by the user in the preferences windows

proc GiD_Event_SelectGIDBatFile { project_name basename } {
    set problemtype [GiD_Info Project ProblemType]
    set filename_bat [file join $problem_directory $problemtype.win.bat]
    if { $::tcl_platform(platform) != "windows" } { 
        set filename_bat [file join $problem_directory $problemtype.unix.bat]
    }
    set problemtype_directory [GidUtils::GiveProblemTypeFullname $problemtype].gid
    set gid_exe [info nameofexecutable]
    set result [list $filename_bat $basename $project_name $problemtype_directory $gid_exe]
    set cpus [GiD_Set GID_OMP_NUM_THREADS]
    lappend $result $ncpus
    return $result
}

GiD_Event_BeforeCalculate: will be called a little earlier than GiD_Event_BeforeRunCalculation, e.g. to allow renumber the mesh before write the calculation file and calculate
remote is 0 in case of local calculation, 1 in case or remote (sending to procserverd)

proc GiD_Event_BeforeCalculate { remote } {
    ...body...
    set value ...
    return $value
}

GiD_Event_BeforeRunCalculation: will be called before running the analysis. It receives several arguments:

batfilename: the name of the batch file to be run
basename: the short name model
dir: the full path to the model directory
problemtypedir: the full path to the Problem Types directory
gidexe: the full path to gid
args: an optional list with other arguments

If it returns -cancel- then the calculation is not started.

proc GiD_Event_BeforeRunCalculation { batfilename basename dir problemtypedir gidexe args } {
    ...body...
    set value ...
    return $value
}

GiD_Event_AfterRunCalculation: will be called just after the analysis finishes.
If it returns -cancel-as a value then the window that inform about the finished process will not be opened.
It receives as arguments:
basename: the short name model;
dir: the full path to the model directory;
problemtypedir: the full path to the Problem Types directory;
where: must be local or remote (remote if it was run in a server machine, using ProcServer);
error: returns 1 if an calculation error was detected;
errorfilename: an error filename with some error explanation, or nothing if everything was ok.

proc GiD_Event_AfterRunCalculation { basename dir problemtypedir where error errorfilename } {
    ...body...
    set value ...
    return $value
}