Bricscad COM API and python win32com

Akim Zimnitsky
Akim Zimnitsky
in Programming and customization
Hello. I'm trying to connect to Bricscad COM API using python win32com. Try adding the line causing the error.
[code]
import win32com.client
acad = win32com.client.Dispatch("BricscadApp.AcadApplication") doc = acad.ActiveDocument model = doc.ModelSpace paper = doc.PaperSpace util = doc.Utility blocks = doc.Blocks print acad, doc,model,paper, util,blocks sCurName = doc.Name # it works print sCurName line = model.AddLine((0,0),(0,10)) # An error occurs
[/code]

Comments

  • Akim Zimnitsky
    Akim Zimnitsky

    import win32com.client
    acad = win32com.client.Dispatch("BricscadApp.AcadApplication")
    doc = acad.ActiveDocument
    model = doc.ModelSpace
    paper = doc.PaperSpace
    util = doc.Utility
    blocks = doc.Blocks
    print acad, doc,model,paper, util,blocks
    sCurName = doc.Name
    print sCurName
    line = model.AddLine((0,0),(0,10))
  • Its_Alive
    Its_Alive

    Could it be that :
    model.AddLine((0,0),(0,10))
    is looking for a 3d point?
    model.AddLine((0,0,0),(0,10,0))

  • Akim Zimnitsky
    Akim Zimnitsky
     line = model.AddLine((0,0,0),(0,10,0)) # cause error
     line = model.AddLine("0,0,0","0,10,0") # it works

    It's weird. In the developer's guide startpoint and endpoint is arraylike variables. In other programs such as Nanocad this code works correctly
    util.GetPoint() return arraylike variable
  • Akim Zimnitsky
    Akim Zimnitsky
    The problem was with the type of the array. Bricscad requires an array type VT_ARRAY | VT_R8. Python lists do not match this type. This problem is solved with the creation of the array of the appropriate type in python by the command array('d', >).win32com replaced by comtypes library.

    from array import array
    import comtypes.client

    acad = comtypes.client.GetActiveObject("BricscadApp.AcadApplication")
    doc = acad.ActiveDocument
    model = doc.ModelSpace
    paper = doc.PaperSpace
    util = doc.Utility
    blocks = doc.Blocks
    print acad, doc,model,paper, util,blocks
    sCurName = doc.Name
    print sCurName
    pnt1 = array('d',(0,0,0))
    pnt2 = array('d',(0,10,0))
    line = model.AddLine(pnt1,pnt2)
  • Kevin Simmons
    Kevin Simmons

    Hello all,

    How do you implement your code in Bricscad?  I have been working strictly in  Lisp thus far, and have some Python experience and love the language.  Sounds interesting.

  • Akim Zimnitsky
    Akim Zimnitsky
     I connect to Bricscad COM API using comtypes library. I run the script from the outside.
  • Kevin Simmons
    Kevin Simmons

    I get this error when trying to access Bricscad from the Python Shell.  I have imported comtypes.client and I have Bricscad running.

    >>> acad=comtypes.client.GetActiveObject("BricscadApp.AcadApplication")
    Traceback (most recent call last):
      File "", line 1, in
        acad=comtypes.client.GetActiveObject("BricscadApp.AcadApplication")
      File "C:\Python34\lib\site-packages\comtypes\client\__init__.py", line 180, in GetActiveObject
        obj = comtypes.GetActiveObject(clsid, interface=interface)
      File "C:\Python34\lib\site-packages\comtypes\__init__.py", line 1238, in GetActiveObject
        oledll.oleaut32.GetActiveObject(byref(clsid), None, byref(p))
      File "_ctypes/callproc.c", line 920, in GetResult
    OSError: [WinError -2147221021] Operation unavailable
    >>>

    Any ideas on what will cause this error?

    Thanks,

    Kevin

  • Akim Zimnitsky
    Akim Zimnitsky

    I get this error when trying to access Bricscad from the Python Shell.  I have imported comtypes.client and I have Bricscad running.

    >>> acad=comtypes.client.GetActiveObject("BricscadApp.AcadApplication")
    Traceback (most recent call last):
      File " ", line 1, in
        acad=comtypes.client.GetActiveObject("BricscadApp.AcadApplication")
      File "C:\Python34\lib\site-packages\comtypes\client\__init__.py", line 180, in GetActiveObject
        obj = comtypes.GetActiveObject(clsid, interface=interface)
      File "C:\Python34\lib\site-packages\comtypes\__init__.py", line 1238, in GetActiveObject
        oledll.oleaut32.GetActiveObject(byref(clsid), None, byref(p))
      File "_ctypes/callproc.c", line 920, in GetResult
    OSError: [WinError -2147221021] Operation unavailable
    >>>

    Any ideas on what will cause this error?

    Thanks,

    Kevin


    Perhaps you're trying to connect to a 64 bit version of Bricscad. For this you need a 64 bit version comtypes and python
  • Kevin Simmons
    Kevin Simmons
    Thanks Akim,  I was running a 32 bit version of Bricscad.  Re-installed it as 64 bit and it works.  Thanks for the advise.
This discussion has been closed.