ARX function exposure within a separate namespace VLX
问题：
I built a separate namespace vlx from firstasi.lsp, but I cannot connect to
the database with the functions in the loaded asilisp.arx. Why?
解答：
In order to expose a function defined in a loaded ARX application to AutoLISP
code contained in a separate namespace vlx, use the (vl-arx-import) function.
The following AutoLISP code demonstrates how you can use this in a compiled
separate namespace VLX:
(if (member "asilisp.arx" (arx))
(vl-arx-import "asilisp.arx")
(setq
ASI_LISPVERSION nil
)
)
(defun TestSnspc ()
(if (and (null ASI_LISPVERSION)
(null (member "asilisp.arx" (arx)))
)
(progn
(arxload "asilisp.arx")
(vl-arx-import "asilisp.arx")
)
)
(if (null ASI_LISPVERSION)
(princ "\nASILisp.ARX was NOT loaded.")
(princ
(strcat "\nASI Version (Printing From Separate Namespace) = "
(ASI_LISPVERSION)
"\n"
)
)
)
(princ)
)
(vl-doc-export 'TestSnspc)
(princ "\nTestSnspc loaded, type (TestSnspc) to Run.\n")
(princ)
You can find additional documentation for vl-arx-import in the AutoCAD 2000
readme file. Also refer to the function description in the AutoLISP Reference:
AutoCAD 2000 Readme -> AutoCAD 2000 Documentation Corrections and Additions
-> VL-ARX-IMPORT Required to Access External ObjectARX Functions from a
Separate-Namespace VLX
Visual LISP Developer's Guide -> Appendix A -- AutoLISP Function Synopsis ->
VLX Namespace Functions
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