![]() ![]() (setq filter_value (vlax-make-safearray vlax-vbvariant '(0. create a single element array for the value (setq filter_code (vlax-make-safearray vlax-vbinteger '(0. LISP : create a single element array for the DXF Code To Filter forĪll Objects on Layer "7" we would write it like this in Visual Integers, and the Filter Data to be an Array of Variants. The object or objects this method applies to.įilterType : Integer input-only optionalĪ DXF group code specifying the type of filter to use.įilterData : Variant input-only optionalĪctiveX requires a Filter Type to be an Array of ![]() On with this section, as a good understanding of them will help you a lot.įirst of all, let's have a look at the VBA syntax for Selecting with Filters : My Tutorial on " Arrays" before you carry Prevent " Selection Set Already Exists" errors The final step in our application is to delete the selection set to ![]() Of course, we don't need to convert these Objects as they are already VLA Objects. Again, we use the (repeat)įunction to loop through all of our objects, checking if each object has a color property and is updateable before changing it's color. Method, we populate our selection set with the Objects that we would like to process. Well, we've got a selection set but there's nothing in it. After grabbing and storing our reference, using the (vla-get-selectionsets)įunction, we then need to create a new selection set. Looking at the Object Model, we find this collection to be part of the " Activeĭocument" Object. (setq ssets (vla-get-selectionsets acadDocument))įirst we need to reference the selection setĬollection. retrieve a reference to the selection sets object (setq acadDocument (vla-get-activedocument (vlax-get-acad-object))) retrieve a reference to the documents object (defun selectionvl ( / ssets acadDocument newsset ctr item) Here we need to access the Object Model to reference, create and store our selection set. To create a selection set using only VLA is a Item in the selection set, converting it to a VLA Object, and then checkingĪgain this is standard AutoLisp with a little bit of VLA thrown in to confuse The only difference here, is that we need to loop through each individual ![]() (setq check (vlax-property-available-p item "Color" T)) (setq item (vlax-ename->vla-object item)) (defun selectionlisp2 ( / sset item ctr check) Finally we change it's color property using the (vlax-put-property) function.Ĭreate Selection sets utilising (ssget) is Is updateable using the (vlax-property-available-p) function with it's " T"Īrgument set. Next we check to see if the object first has a color property, and secondly We then have toĬonvert the entity to a VLA Object by using the (vlax-ename->vla-object)įunction. We select the entity using the standard (entsel) function. (setq check (vlax-property-available-p sset "Color" T)) check if the entity has a color property (setq sset (vlax-ename->vla-object sset)) Let's look at selecting a single entity first using (entsel). In this tutorial, we we look at Selecting Objects and creating Selection sets using the (entsel) function, the (ssget) function and then using only VLA functions. All Entities contained in an AutoLisp selection set, must be converted to VLA Objects before VLA functions can be applied to them, and you cannot use AutoCAD interactive functions such as (entsel) or (ssget) within a reactor callback function. Selecting Objects and creating Selection Sets is much the same in Visual Lisp as it is for standard AutoLisp except for two main differences. ![]()
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