vlax-put-property??

Command: !pt1a
(6.57642 0.227973 0.0)

Command: !ent4
#<VLA-OBJECT IAcadLine 051cedb4>

Command: (vlax-put-property ent4 'StartPoint pt1a)
; error: lisp value has no coercion to VARIANT with this type: (6.57642
0.227973 0.0)

I'm trying to understand the vlisp more, but I can't seem to get this to work and I don't understand the error it gives me. If someone could shed some light on this situation it would be greatly appreciated.

Tim

 

Review 'safe-array'
Bob

 

Jeff:

Do you know if the VLAX-PUT and VLAX-GET functions might be removed from
Visual Lisp in a future release?

Currently, they are undocumented.

Aren't they holdovers from Vital Lisp?

Don

 

they (usually) allow the use of lisp lists instead of variants/safearrays

this newsgroup and the mentioned T & E

 

T.

The way I always remember it is....
vlax-put-property & vlax-invoke-method require that all the arguments be "vba"-dified. You need to prepare them before you present them to to the property or method using conversion methods (like vlax-3d-point). And if they return anything (like arrays of coordinates, object names, etc) , the values will need to be un-"vba"-dified, except if they return real numbers or strings. Also, the method or property name must be preceded by a ' symbol.

On the other hand, vlax-put and vlax-invoke will accept lisp formatted arguments and also return lisp formatted arguments. The method or property is enclosed in quotes.

(vlax-put LineObj "Startpoint" pt1a) should work just fine.

Andrew

 

I think they're great as well but I always worry about unexpected results
with future releases.

Don

 

Are you sure they are undocumented. If you go to the Autolisp Developer's Guide, under "Using Visual LISP Functions with ActiveX Methods, you will find the following paragraph:

VLISP also adds a set of ActiveX-related functions whose names are prefixed with vlax-. These are more general ActiveX functions, each of which can be applied to numerous methods, objects, or properties. For example, with the vlax-get-property function, you can obtain any property of any ActiveX object. If your drawing contains custom ActiveX objects, or if you need to access objects from other applications, such as a Microsoft Excel spreadsheet, you can use the vlax-invoke-method, vlax-get-property, and vlax-put-property functions to access their methods and properties; you'll see examples using these functions in Using ActiveX without Importing a Type Library.

Looks like they are documented to me


LT

 

I see nothing in that quote for (vlax-get) or (vlax-put). I *do* see
(vlax-get-property) and (vlax-put-property).

;^)

--
R. Robert Bell


Are you sure they are undocumented. If you go to the Autolisp Developer's
Guide, under "Using Visual LISP Functions with ActiveX Methods, you will
find the following paragraph:

VLISP also adds a set of ActiveX-related functions whose names are
prefixed with vlax-. These are more general ActiveX functions, each of which
can be applied to numerous methods, objects, or properties. For example,
with the vlax-get-property function, you can obtain any property of any
ActiveX object. If your drawing contains custom ActiveX objects, or if you
need to access objects from other applications, such as a Microsoft Excel
spreadsheet, you can use the vlax-invoke-method, vlax-get-property, and
vlax-put-property functions to access their methods and properties; you'll
see examples using these functions in Using ActiveX without Importing a Type
Library.

Looks like they are documented to me

 

My apologies. In my own head I was just grouping vlax-get-property and
vlax-put-property under the umbrella of the vlax-get and vlax-put functions
and had brainlock since the original post was using vlax-put-property.
Obviously I don't use the functions that often myself ;-)

LT