On Thursday, August 28, 2003, at 07:37 PM, Brian Yennie wrote:
Externals have both "pass" and "error" arguments passed to their functions.
Try setting one (or both) to true- I haven't experimented with them myself, but I assume that one passes the message and the other throws an error.
Setting pass to True, then returning from the function, is like the pass command in transcript - like you guessed.
But setting error to true, then returning from the function, is not the same as "throw". Setting error to true causes script execution to stop- I believe like "exit to top" in transcript. Here is a comment from external.c in the SDK:
/* only set error to true when a syntax error occurs, as it
causes the script to stop execution at this point */
*error = True;
*retstring = istrdup("printf: must pass 2 arguments");
I sure don't see anything in XCmdGlue.h about throw. Dar how about this? EvalExpr("throw reallyBadExternalCondition", &retvalue); /* untested */
Alex Rice, Software Developer Architectural Research Consultants, Inc. http://ARCplanning.com
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