topic Re: Master_GDL usage for user global variables in Libraries & objects

Master_GDL usage for user global variables

Robert Nichols — Wed, 24 May 2023 09:40:35 GMT

I'm trying to use Master_GDL script for the first time. My goal is to set a value for a user global variable in the master script, and have subsequent scripts run during 3d window generation and use the value.

My first effort is not working, and I suspect I'm missing something obvious.

Script:
- created with gel editor
- name is "MASTER_GLD"
- object subtype set to "LIBRARY MASTER"
- variable is set in master script (only script space available)
- "GLOB_USER_1=5" is code used

But GLOB_USER_1 evaluates to 0 when accessed in another script.
What's wrong?

Re: Master_GDL usage for user global variables

Barry Kelly — Thu, 19 Nov 2015 02:15:52 GMT

Two things I can think of.

If you have just created this Master_GDL object then you need to reload your library to start it working.
It is only read when you start Archicad or reload the library.

The second is make sure you don't use quotes around GLOB_USER_1=5 (I am sure that was just for your example).

Barry.

Re: Master_GDL usage for user global variables

Laszlo Nagy — Thu, 19 Nov 2015 14:35:24 GMT

There were changes in ARCHICAD 19 to how GLOB_USER parameters work:

Check Section IV. User Globals:

http://gdl.graphisoft.com/wp-content/uploads/GDL-changes-in-ArchiCAD-19-v1.1.pdf

It also states that:

The use of user globals for data transfer between an element and its macros is obsolete, slow to interpret, and hard to debug. The best practice is:
o For data transfer from the caller element to the macro, simply add the parameters to the macro call
o For data transfer from the macro to the caller element, add the returned parameters to the macro call
o To centrally set a value for all parts of a library:
 Use the Library Master object to set fixed values and value lists for all of your objects
 Use the Library Globals set in Model View Options to have editable parameters affecting all Library parts using that Model View.