[求助]：关于透明命令的问题

leemanzhuo

欲要做一个窗口缩放和动态缩放的透明命令，可以使用户在其他命令执行的过程中能执行这些命令。
(defun zw(/ pt1 pt2)
   (command "zoom" "w")
  (princ)
)

(vlax-add-cmd "zw" 'zw "zw" 1)

(defun zd(/)
  (command "zoom" "d")
  (princ)
)

(vlax-add-cmd "zd 'zd"zd 1)

为何加载上面代码后在使用其他命令的过程中使用这些命令会出错？

cy956

你试试这个

leemanzhuo

我对vla系列函数不熟悉.

XDSoft

最初由 leemanzhuo 发布
[B]我对vla系列函数不熟悉. [/B]

看下帮助就可以了，这个函数是用LISP把LISP定义的命令加到ACAD的命令堆栈中，这样就和标准的内部命令一样了。也就是说可以：(command "yourcmd".....)了。

添加的方式可以有“透明命令”参数等

2. 
   
3. [FONT=courier new]
   
4. Adds commands to the AutoCAD built-in command set
   
5. 
   
6. (vlax-add-cmd global-name func-sym [local-name cmd-flags])
   
7. 
   
8. With vlax-add-cmd you can define a function as an AutoCAD command, without using the c: prefix in the function name. You can also define a transparent AutoLISP command, which is not possible with a c: function.
   
9. 
   
10. Warning! You cannot use the command function call in a transparently-defined vlax-add-cmd function. Doing so can cause AutoCAD to close unexpectedly.
    
11. 
    
12. The vlax-add-cmd function makes an AutoLISP function visible as an ObjectARX-style command at the AutoCAD Command prompt during the current AutoCAD session. The function provides access to the ObjectARX acedRegCmds macro, which provides a pointer to the ObjectARX system AcEdCommandStack object.
    
13. 
    
14. The vlax-add-cmd function automatically assigns commands to command groups. When issued from a document namespace, vlax-add-cmd adds the command to a group named doc-ID; doc-ID is a hexadecimal value identifying the document. If issued from a separate-namespace VLX, vlax-add-cmd adds the command to a group named VLC-Ddoc-ID:VLX-name, where VLX-name is the name of the application that issued vlax-add-cmd.
    
15. 
    
16. It is recommended that you use the vlax-add-cmd function from a separate-namespace VLX. You should then explicitly load the VLX using theAPPLOAD command, rather than by placing it in one of the startup LISP files.
    
17. 
    
18. Note: You cannot use vlax-add-cmd to expose functions that create reactor objects or serve as reactor callbacks.
    
19. 
    
20. Arguments
    
21. 
    
22. global-name
    
23. 
    
24. A string.
    
25. 
    
26. func-sym
    
27. 
    
28. A symbol naming an AutoLISP function with zero arguments.
    
29. 
    
30. local-name
    
31. 
    
32. A string (defaults to global-name).
    
33. 
    
34. cmd-flags
    
35. 
    
36. An integer (defaults to ACRX_CMD_MODAL + ACRX_CMD_REDRAW)
    
37. 
    
38. The primary flags are:
    
39. 
    
40. ACRX_CMD_MODAL (0) Command cannot be invoked while another command is active.
    
41. 
    
42. ACRX_CMD_TRANSPARENT (1) Command can be invoked while another command is active.
    
43. 
    
44. The secondary flags are:
    
45. 
    
46. ACRX_CMD_USEPICKSET (2) When the pickfirst set is retrieved it is cleared within AutoCAD. Command will be able to retrieve the pickfirst set. Command cannot retrieve or set grips.
    
47. 
    
48. ACRX_CMD_REDRAW (4) When the pickfirst set or grip set is retrieved, neither will be cleared within AutoCAD. Command can retrieve the pickfirst set and the grip set.
    
49. 
    
50. If both ACRX_CMD_USEPICKSET and ACRX_CMD_REDRAW are set, the effect is the same as if just ACRX_CMD_REDRAW is set. For more information on the flags, refer to the Command Stack topic in the ObjectARX Reference manual.
    
51. 
    
52. Return Values
    
53. 
    
54. The global-name argument, if successful. The function returns nil, if acedRegCmds->addCommand(...) returns an error condition.
    
55. 
    
56. Examples
    
57. 
    
58. The hello-autocad function in the following example has no c: prefix, but vlax-add-cmd makes it visible as an ObjectARX-style command at the AutoCAD Command prompt:
    
59. 
    
60. _$ (defun hello-autocad () (princ "hello Visual LISP"))
    
61. 
    
62. HELLO-AUTOCAD
    
63. _$ (vlax-add-cmd "hello-autocad" 'hello-autocad)
    
64. 
    
65. "hello-autocad"
    
66. See Also
    
67. 
    
68. [/FONT]

<br /> [FONT=courier new]<br /> Adds commands to the AutoCAD built-in command set<br /> <br /> (vlax-add-cmd global-name func-sym [local-name cmd-flags]) <br /> <br /> With vlax-add-cmd you can define a function as an AutoCAD command, without using the c: prefix in the function name. You can also define a transparent AutoLISP command, which is not possible with a c: function. <br /> <br /> Warning! You cannot use the command function call in a transparently-defined vlax-add-cmd function. Doing so can cause AutoCAD to close unexpectedly. <br /> <br /> The vlax-add-cmd function makes an AutoLISP function visible as an ObjectARX-style command at the AutoCAD Command prompt during the current AutoCAD session. The function provides access to the ObjectARX acedRegCmds macro, which provides a pointer to the ObjectARX system AcEdCommandStack object. <br /> <br /> The vlax-add-cmd function automatically assigns commands to command groups. When issued from a document namespace, vlax-add-cmd adds the command to a group named doc-ID; doc-ID is a hexadecimal value identifying the document. If issued from a separate-namespace VLX, vlax-add-cmd adds the command to a group named VLC-Ddoc-ID:VLX-name, where VLX-name is the name of the application that issued vlax-add-cmd. <br /> <br /> It is recommended that you use the vlax-add-cmd function from a separate-namespace VLX. You should then explicitly load the VLX using theAPPLOAD command, rather than by placing it in one of the startup LISP files. <br /> <br /> Note: You cannot use vlax-add-cmd to expose functions that create reactor objects or serve as reactor callbacks. <br /> <br /> Arguments <br /> <br /> global-name <br /> <br /> A string. <br /> <br /> func-sym <br /> <br /> A symbol naming an AutoLISP function with zero arguments. <br /> <br /> local-name <br /> <br /> A string (defaults to global-name). <br /> <br /> cmd-flags <br /> <br /> An integer (defaults to ACRX_CMD_MODAL + ACRX_CMD_REDRAW) <br /> <br /> The primary flags are: <br /> <br /> ACRX_CMD_MODAL (0) Command cannot be invoked while another command is active. <br /> <br /> ACRX_CMD_TRANSPARENT (1) Command can be invoked while another command is active. <br /> <br /> The secondary flags are: <br /> <br /> ACRX_CMD_USEPICKSET (2) When the pickfirst set is retrieved it is cleared within AutoCAD. Command will be able to retrieve the pickfirst set. Command cannot retrieve or set grips. <br /> <br /> ACRX_CMD_REDRAW (4) When the pickfirst set or grip set is retrieved, neither will be cleared within AutoCAD. Command can retrieve the pickfirst set and the grip set. <br /> <br /> If both ACRX_CMD_USEPICKSET and ACRX_CMD_REDRAW are set, the effect is the same as if just ACRX_CMD_REDRAW is set. For more information on the flags, refer to the Command Stack topic in the ObjectARX Reference manual. <br /> <br /> Return Values <br /> <br /> The global-name argument, if successful. The function returns nil, if acedRegCmds->addCommand(...) returns an error condition. <br /> <br /> Examples <br /> <br /> The hello-autocad function in the following example has no c: prefix, but vlax-add-cmd makes it visible as an ObjectARX-style command at the AutoCAD Command prompt: <br /> <br /> _$ (defun hello-autocad () (princ "hello Visual LISP"))<br /> <br /> HELLO-AUTOCAD<br /> _$ (vlax-add-cmd "hello-autocad" 'hello-autocad)<br /> <br /> "hello-autocad"<br /> See Also <br /> <br /> [/FONT]