[ARX程序]：命令的屏蔽

fming

xd，你好，我做一模块要对用户进行CAD命令权限控制，那么怎样能对命令的禁止呢？

masterhe

这么黑?
方法很多，但这么作有必要吗？你屏蔽别人，所以这个问题好多人不愿意回答。

ammycute

用反应器可以吗？？

XDSoft

给你贴篇ADN资料，替换ACAD的内部命令的方法

2. 
   
3. Replacing Acad's Internal Commands  
   
4. ID    1957  
   
5. Applies to:    AutoCAD
   
6. AutoCAD 2000I
   
7. AutoCAD R14
   
8. 
   
9. Date    12/24/2001  
   
10. 
    
11. This document is part of    AcEd     
    
12. 
    
13. 
    
14. Question
    
15. How do I define my own commands that replace AutoCAD's ?
    
16. Answer
    
17. The ObjectARX API doesn't provide an ARX method to override an AutoCAD internal
    
18. command. This can only be achieved by using the "UNDEFINE" command. In the following
    
19. sample, undocumented function acedPostCommand() is used to post a lisp expression
    
20. that uses the UNDEFINE command to undefine the "OPEN" and "SAVEAS" command.
    
21. Also, ObjectARX does provide two functions to undefine certain type of commands,
    
22. they are:
    
23. 
    
24. 1)  acedUndef()
    
25. Undefines a function (an AutoLISP external function) that was previously defined
    
26. by a call to acedDefun().
    
27. 
    
28. 2) acedCmdUndefine().
    
29. acedCmdUndefine only works with ARX registered commands.
    
30. 
    
31. For example, if you want to override OPEN and SAVEAS commands, you need to do
    
32. the following:
    
33. 
    
34. 
    
35. // declare the following function
    
36. int acedPostCommand(const char*);
    
37. 
    
38. 
    
39. // place the following lines in acrxEntryPoint()'s case AcRx::kInitAppMsg:
    
40.   case AcRx::kInitAppMsg:
    
41.   acedPostCommand("(command "_undefine" "_open") ");   
    
42.   acedPostCommand("(command "_undefine" "_saveas") ");   
    
43. 
    
44. 
    
45. // ** do this always **
    
46.   acedRegCmds->addCommand("MYCOMMAND_GRP", "OPEN", "_OPEN", ACRX_CMD_MODAL, rx_open);
    
47.   acedRegCmds->addCommand("MYCOMMAND_GRP", "SAVE", "_SAVE",  ACRX_CMD_MODAL, rx_saveAs);
    
48.   acedRegCmds->addCommand("MYCOMMAND_GRP", "SAVEAS", "_SAVEAS", ACRX_CMD_MODAL, rx_saveAs);
    
49. 
    
50. 
    
51. 
    
52. 
    
53. 
    
54. #include <afxdlgs.h>
    
55. void rx_open()
    
56. {
    
57.   CFileDialog FDialog (TRUE, "dwg", "",OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, _T("AutoCAD Drawing Files (*.dwg)|*.dwg||"));
    
58.   
    
59.   if (FDialog.DoModal() == IDOK)
    
60.   {
    
61.    char* pFile = new char[512];
    
62.    strcpy(pFile, FDialog.GetPathName());
    
63.    if(acedSyncFileOpen(pFile) != Acad::eOk)
    
64.     acutPrintf("\nError open drawing file.");
    
65.    delete [] pFile;
    
66.   }
    
67. }
    
68. 
    
69. 
    
70. void rx_saveAs()
    
71. {
    
72.   CFileDialog FDialog (FALSE, "dwg", "",  
    
73.    OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
    
74.    _T("Save AutoCAD Drawing File As (*.dwg)|*.dwg||"));
    
75.   
    
76.   if (FDialog.DoModal() == IDOK)
    
77.   {
    
78.    char* pFile = new char[512];
    
79.    strcpy(pFile, FDialog.GetPathName());
    
80.    // user can obtain the database object through readDwgFile()
    
81.    // for an external database
    
82.    AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();
    
83.    if(pDb->saveAs(pFile) != Acad::eOk)
    
84.     acutPrintf("\nError saving drawing file.");
    
85. 
    
86.    //clean up
    
87.    delete [] pFile;
    
88.   }
    
89. 
    
90. 
    
91. }
    
92. 
    
93. 
    
94. Note:
    
95. 
    
96. 1) You can always use the original native ACAD command by prefixing the command
    
97. name with a "." even if it is already undefined.
    
98. 2) The above code runs only in SDI mode due to the use of acedSyncFileOpen() method.
    
99. 
    

<br /> Replacing Acad's Internal Commands  <br /> ID    1957  <br /> Applies to:    AutoCAD <br /> AutoCAD 2000I<br /> AutoCAD R14<br /> <br /> Date    12/24/2001  <br /> <br /> This document is part of    AcEd     <br /> <br /> <br /> Question <br /> How do I define my own commands that replace AutoCAD's ?<br /> Answer <br /> The ObjectARX API doesn't provide an ARX method to override an AutoCAD internal <br /> command. This can only be achieved by using the "UNDEFINE" command. In the following <br /> sample, undocumented function acedPostCommand() is used to post a lisp expression <br /> that uses the UNDEFINE command to undefine the "OPEN" and "SAVEAS" command. <br /> Also, ObjectARX does provide two functions to undefine certain type of commands, <br /> they are:<br /> <br /> 1)  acedUndef()<br /> Undefines a function (an AutoLISP external function) that was previously defined <br /> by a call to acedDefun().<br /> <br /> 2) acedCmdUndefine().<br /> acedCmdUndefine only works with ARX registered commands.<br /> <br /> For example, if you want to override OPEN and SAVEAS commands, you need to do <br /> the following:<br /> <br /> <br /> // declare the following function<br /> int acedPostCommand(const char*); <br /> <br /> <br /> // place the following lines in acrxEntryPoint()'s case AcRx::kInitAppMsg:<br />   case AcRx::kInitAppMsg: <br />   acedPostCommand("(command "_undefine" "_open") ");   <br />   acedPostCommand("(command "_undefine" "_saveas") ");   <br /> <br /> <br /> // ** do this always **<br />   acedRegCmds->addCommand("MYCOMMAND_GRP", "OPEN", "_OPEN", ACRX_CMD_MODAL, rx_open);<br />   acedRegCmds->addCommand("MYCOMMAND_GRP", "SAVE", "_SAVE",  ACRX_CMD_MODAL, rx_saveAs);<br />   acedRegCmds->addCommand("MYCOMMAND_GRP", "SAVEAS", "_SAVEAS", ACRX_CMD_MODAL, rx_saveAs);<br /> <br /> <br /> <br /> <br /> <br /> #include <afxdlgs.h> <br /> void rx_open() <br /> { <br />   CFileDialog FDialog (TRUE, "dwg", "",OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, _T("AutoCAD Drawing Files (*.dwg)|*.dwg||")); <br />   <br />   if (FDialog.DoModal() == IDOK) <br />   { <br />    char* pFile = new char[512]; <br />    strcpy(pFile, FDialog.GetPathName()); <br />    if(acedSyncFileOpen(pFile) != Acad::eOk) <br />     acutPrintf("\nError open drawing file."); <br />    delete [] pFile; <br />   } <br /> } <br /> <br /> <br /> void rx_saveAs() <br /> { <br />   CFileDialog FDialog (FALSE, "dwg", "",  <br />    OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, <br />    _T("Save AutoCAD Drawing File As (*.dwg)|*.dwg||")); <br />   <br />   if (FDialog.DoModal() == IDOK) <br />   { <br />    char* pFile = new char[512]; <br />    strcpy(pFile, FDialog.GetPathName()); <br />    // user can obtain the database object through readDwgFile()<br />    // for an external database<br />    AcDbDatabase* pDb = acdbHostApplicationServices()->workingDatabase();<br />    if(pDb->saveAs(pFile) != Acad::eOk) <br />     acutPrintf("\nError saving drawing file."); <br /> <br />    //clean up<br />    delete [] pFile; <br />   } <br /> <br /> <br /> }<br /> <br /> <br /> Note:<br /> <br /> 1) You can always use the original native ACAD command by prefixing the command <br /> name with a "." even if it is already undefined.<br /> 2) The above code runs only in SDI mode due to the use of acedSyncFileOpen() method.<br /> <br />

fming

我做的这个项目用Oracle作为数据后台的，所以设置了用户权限，系统管理员可以根据登录用户也设置他的命令集呀，所以要进行CAD命令权限控制，这并没有和黑有关呀。

fming

undefine命令，这样对于一般的用户是可以这样做的，但是对于CAD很熟练的人来说那很不安全的，再说我要求的是对登录用户的某些CAD命令的禁止，我也到ADN网站看了，那里说了有三种方法，一就是undefine/二就是用钩子函数，三就是在编辑反应器的veto();
我最初是就是用反应器的，但veto()在AcEditorReactor：：commandWillStart(const char * cmdStr)内不能被调用。不知为什么？还请指教