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Accessing And Changing The AutoCAD Preferences

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发表于 2021-1-11 20:31:51 | 显示全部楼层 |阅读模式

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问题:

How to access and change the AutoCAD preferences?

解答:

This could be done by manipulating the AutoCAD registry directly, or by using
the AutoCAD Preferences ActiveX object. Note that if you make a change in the
registry directly, those changes will not affect the current running AutoCAD
session. However, the ActiveX Preferences object exports all the AutoCAD
preferences properties through an interface that you can use in VBA / VB or
C++ / MFC applications. Attached below is a sample code snippet (in VB and C++)
which appends a new path to the existing AutoCAD support path.

Sample code for VB

Public acadApp As Object
Public acadPref As Object

  1. Sub f_preferences()
  2. On Error Resume Next
  3. Set acadApp = GetObject(, "AutoCAD.Application")
  4. If Err Then
  5.    Err.Clear
  6.    Set acadApp = CreateObject("AutoCAD.Application")
  7.    If Err Then
  8. MsgBox Err.Description & "  " & Err.Number
  9. Exit Sub
  10.    End If
  11. End If
  12. acadApp.Visible = True
  13. Set acadPref = acadApp.Preferences


  14. Dim strCurrentSuppPath As String
  15. strCurrentSuppPath = acadPref.SupportPath   'set the current path to temporary
  16. variable
  17. 'example: You want to add this "c:\test" path to the support path
  18. acadPref.SupportPath = strCurrentSuppPath & ";" & "c:\test"
  19. End Sub



Sample code for VC

  1. #import "acad.tlb" no_namespace


  2. void fSetSupportPath()
  3. {
  4. try
  5. {
  6.   IAcadApplicationPtr pApp = NULL;
  7.   IAcadPreferencesPtr pPref = NULL;
  8.   IAcadPreferencesFilesPtr pPrefFiles = NULL;


  9.   pApp = acedGetAcadWinApp()->GetIDispatch(TRUE);
  10.   pPref = pApp->Preferences;


  11.   pPrefFiles = pPref->Files;


  12.   _bstr_t strOldPath;
  13.   strOldPath = pPrefFiles->GetSupportPath();


  14.   //print old support path
  15.   acutPrintf("\nOld Support path: %s",(char *)(_bstr_t)pPrefFiles->GetSupportPath());


  16.   //set the new support path
  17.   pPrefFiles->PutSupportPath(strOldPath + _bstr_t(";c:\\test"));
  18. }
  19. catch(_com_error &es)
  20. {

  21. }
  22. }


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