Python (Native Python)
bindings for C++:
AutoCAD® ObjectARX® 2021-2025
ZwCAD® ZRX® 2024-2025
GstarCAD® GRX® 2024
BricsCAD® BRX® 2024
bindings for ActiveX
AutoCAD® 2021-2025
BricsCAD v24
GstarCAD 2024
ZwCAD 2024-2025
uses wxPython for the GUI, Dialogs and CAdUiPalette wrapper
Embeds Python (3.12) and wxPython(4.2.1) into a loadable ARX module
Read ths install info here https://github.com/CEXT-Dan/PyRx/blob/main/READMEINSTALL.md
Get the latest build from https://github.com/CEXT-Dan/PyRx/releases
On loading the ARX/BRX/GRX/ZRX module, the following commands are added to AutoCAD
PYLOAD:
Use this command to load your python modules.
PYRELOAD:
Use this command to reload your python modules.
PYCMDPROMPT:
Provides simple access to the python interpreter
PYRXVER:
Prints the ARX module version
Autolisp:
(pyload PATH) returns T or nil
(pyloaded) returns a list of loaded modules
ZWCAD (until fixed #81)
(pyload) → (adspyload)
(pyloaded) → (adspyloaded)
#PyRx sample:
#imports
from pyrx_imp import Rx, Ge, Gi, Db, Ap, Ed, Sm
import traceback
# these four functions are called as they would be in ARX
def OnPyInitApp():
print("\nOnPyInitApp")
print("\ncommand = pydoit")
def OnPyUnloadApp():
print("\nOnPyUnloadApp")
def OnPyLoadDwg():
print("\nOnPyLoadDwg")
def OnPyUnloadDwg():
print("\nOnPyUnloadDwg")
# functions that are prefixed with PyRxCmd_ are registered as AutoCAD commands
def PyRxCmd_pydoit():
try:
db = Db.HostApplicationServices().workingDatabase()
# create a line
line = Db.Line()
line.setDatabaseDefaults()
# use Ge point
line.setStartPoint(Ge.Point3d(0, 0, 0))
line.setEndPoint(Ge.Point3d(100, 100, 0))
# set a color
color = Db.Color()
color.setRGB(255, 255, 0)
line.setColor(color)
# open modelspace for write and add the entity
model = Db.BlockTableRecord(db.modelSpaceId(), Db.OpenMode.ForWrite)
model.appendAcDbEntity(line)
except Exception as err:
print(err)
#ActiveX sample:
from pyrx_impx import Rx, Ge, Gi, Db, Ap, Ed, Ax
import traceback
def PyRxCmd_makeTable():
try:
axApp = Ax.getApp()
axDoc = axApp.ActiveDocument
tablePnt = axDoc.Utility.GetPoint("\nTable location: ")
axDoc.ModelSpace.AddTable(tablePnt, 5, 5, 10, 30)
except Exception as err:
traceback.print_exception(err)
def PyRxCmd_hitTest():
try:
axApp = Ax.getApp()
axDoc = axApp.ActiveDocument
hitVec = (0, 0, 1) # kZaxis
hitPnt = axDoc.Utility.GetPoint("\nSelect cell: ")
minmax = hitPnt + axDoc.GetVariable("VSMAX")
axSs = axDoc.SelectionSets.Add("AXTBLSS")
axSs.SelectByPolygon(
Ax.constants.acSelectionSetFence, minmax, [0], ["ACAD_TABLE"]
)
for axEnt in axSs:
axTable = Ax.IAcadTable(axEnt)
hit = axTable.HitTest(hitPnt, hitVec)
if hit[0]:
cellstr = "Cell={},{}".format(hit[1], hit[2])
axTable.SetTextString(hit[1], hit[2], 0, cellstr)
return
except Exception as err:
traceback.print_exception(err)
finally:
axSs.Delete()
Create GUIs with wxPython, bindings for dialogs and palettes
Generated stub files for built in help, autocomplete
Debugging support with debugpy
Blogs: https://pyarx.blogspot.com/ Discussion forum: https://www.theswamp.org/index.php?board=76.0