Wild-Card Patterns in Filter Lists

Selection Set Filter Lists

Relational Tests

 

AutoLISP Developer's Guide > Using the AutoLISP Language > Using AutoLISP to Manipulate AutoCAD Objects > Selection Set Handling > Selection Set Filter Lists > 

Filtering for Extended Data

Using the ssgetfilter-list, you can select all entities containing extended data for a particular application. (See Extended Data - xdata.) To do this, use the -3 group code, as shown in the following example:

(ssget "X" '((0 . "CIRCLE") (-3 ("APPNAME"))))

This code will select all circles that include extended data for the "APPNAME" application. If more than one application name is included in the -3 group's list, an AND operation is implied and the entity must contain extended data for all of the specified applications. So, the following statement would select all circles with extended data for both the "APP1" and "APP2" applications:

(ssget "X" '((0 . "CIRCLE") (-3 ("APP1")("APP2"))))

Wild-card matching is permitted, so either of the following statements will select all circles with extended data for either or both of these applications.

(ssget "X" '((0 . "CIRCLE") (-3 ("APP[12]"))))

(ssget "X" '((0 . "CIRCLE") (-3 ("APP1,APP2"))))