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#Autocad lisp princ string and variable code
The following is some sample code that exports the symbols, functions, global variables, and commands that are defined via AutoLISP or exposted to AutoLISP from. If the check fails, you can then load the necessary file.Įntering (atoms-family 1 '("getpoint" "getpoints" "PI")) at the Command prompt returns a long list that might look like the following. This check can be helpful if your routines depend on the definition of a function from a previously loaded file. The list returned is useful, but can take a while to sort through as it is not in alphabetical order or an order that will make much sense.Īs mentioned previously, you can use the ATOMS-FAMILY function to test for the existence of a symbol, function, or variable by passing in a list of the items you want to see exist. "VLA-GET-SHOWPLOTSTYLES" "VLA-GET-NUMCELLSTYLES" "AI_RETURN" "C:SAVEALL") ("ACTOOLBARDOCKBOTTOM" "ACET-VAR-SETVAR" "ACVIEWPORT4" "AC3IN_1FT" "VLA-ADDBOX" Symbol_list - Optional List of symbols, variables, or functions to search for.Įntering (atoms-family 1) at the Command prompt returns a long list that might look like the following. Valid values are 0 for Symbols or 1 for Strings. This ability to check for the existence of previous definitions is helpful if you want to see which functions are exposed before loading an AutoLISP file.įormat - Determines how the values in the returned list are formated. You can also use the function to check to see if a specific symbol, global variable, and/or function is currently defined or set. The ATOMS-FAMILY (not the Adams Family) function returns a list of all the symbols, global variables, and functions currently defined for use by AutoLISP. Note: Using an acad.lsp file runs each time AutoCAD is launched. An acaddoc.lsp file runs each time a drawing is open.AutoLISP is one of the oldest and easiest ways of extending AutoCAD, but did you ever wonder what functions are currently defined or which global variables are already set? (setq s::startup (append s::startup (quote ((mystartup))))) To ensure compatibility, append the code in case there is an existing S::STARTUP function. If the S::STARTUP function is defined like this, problems could arise if other applications use the S::STARTUP function as well (for example, a third-party plug-in). With the same example, the acad.lsp file would look like this:
#Autocad lisp princ string and variable full
If the AutoLISP routines are not in the AutoCAD support paths, include the full path within the acad.lsp file. Use either "/" or "\\" as path delimiters. If wall.lsp and stair.lsp are in the AutoCAD search path, they will automatically load. Create an acad.lsp file that contains the following lines of code and place it in the AutoCAD support paths. If a special function S::STARTUP is defined in theįor example, there are two AutoLISP routines named stair.lsp and wall.lsp to be loaded each time AutoCAD is run.
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