[ARX程序]：编译成功，运行时一直不能打开MODEL SPACE？请问哪里出错？

frankzht

编译成功，运行时一直不能打开MODEL SPACE？请问哪里出错？
Failed to open MODEL SPACE for a write operation。
  
void drawWin()
{
        AcDbBlockTableRecord *pBlkTableRecord;
   
        RectWindow *pRectWindow;        // RectWindow class

        RectWindow *pGenericWind;
                acedInitGet(NULL, "Arch apeX Rect");

                         pRectWindow = new RectWindow;
                        pGenericWind = pRectWindow;
                        /*
                        AcDbBlockTableRecord *pBlkTableRecord;
                        if(!getModelSpaceRecord(pBlkTableRecord))
                        {
                                return;
                        }
                        pRectWindow->drawWindow(pBlkTableRecord);

                pGenericWind->setWindowLength(windInfo.m_dWindWt);
                pGenericWind->setWindowHeight(windInfo.m_dWindHt);
                pGenericWind->setWindowCols(windInfo.m_nCols);
                pGenericWind->setWindowRows(windInfo.m_nRows);
                pGenericWind->setWindowStartPoint(windInfo.m_startPt);

                if(!getModelSpaceRecord(pBlkTableRecord))
                {
                        return;
                }

                pGenericWind->drawWindow(pBlkTableRecord);

                if(pGenericWind != NULL)
                {
                        delete pGenericWind;
                }

                pBlkTableRecord->close();

                // variables.
//                g_bProceed = Adesk::kFalse;

}// if g_bProceed;
/*        else
        {
                acutPrintf("\nUser cancelled. ");
        }*/


Adesk::Boolean getModelSpaceRecord(AcDbBlockTableRecord*& pBlkTableRecord)
{
        AcDbDatabase *pCurDb;
        AcDbBlockTable *pBlkTable;
        Acad::ErrorStatus es;

        pCurDb = acdbHostApplicationServices()->workingDatabase();

        es = pCurDb->getBlockTable(pBlkTable, AcDb::kForRead);
        if(es != Acad::eOk)
        {
                acutPrintf("\nFailed to open Block Table for a read operation.");
                return Adesk::kFalse;
        }

        es = pBlkTable->getAt(ACDB_MODEL_SPACE, pBlkTableRecord, AcDb::kForWrite);
        if(es != Acad::eOk)
        {
                acutPrintf("\nFailed to open MODEL SPACE for a write operation.");
                pBlkTable->close();
                return Adesk::kFalse;
        }

        pBlkTable->close();

        return Adesk::kTrue;
}

ishou

You open  pBlkTableRecord  under AcDb::kForWrite  for many times and
not to  use  ->close()  before the next  open,  when you call
GetModelSpaceRecord(pBlkTableRecord) for many times.

-------------------------------------------------

1. 
   
2. void drawWin()
   
3. {
   
4. AcDbBlockTableRecord *pBlkTableRecord;
   
5. 
   
6. RectWindow *pRectWindow; // RectWindow class
   
7. 
   
8. RectWindow *pGenericWind;
   
9. acedInitGet(NULL, "Arch apeX Rect");
   
10. 
    
11. pRectWindow = new RectWindow;
    
12. pGenericWind = pRectWindow;
    
13. [COLOR=Blue]/*   [/COLOR][COLOR=Red]    <<---------why? where is the match */  ?   [/COLOR]
    
14. AcDbBlockTableRecord *pBlkTableRecord;
    
15. if(!getModelSpaceRecord(pBlkTableRecord))
    
16. {
    
17. return;
    
18. }
    
19. pRectWindow->drawWindow(pBlkTableRecord);
    
20. 
    
21. pGenericWind->setWindowLength(windInfo.m_dWindWt);
    
22. pGenericWind->setWindowHeight(windInfo.m_dWindHt);
    
23. pGenericWind->setWindowCols(windInfo.m_nCols);
    
24. pGenericWind->setWindowRows(windInfo.m_nRows);
    
25. pGenericWind->setWindowStartPoint(windInfo.m_startPt);
    
26. 
    
27. if(!getModelSpaceRecord(pBlkTableRecord))
    
28. {
    
29. return;
    
30. }
    
31. 
    
32. pGenericWind->drawWindow(pBlkTableRecord);
    
33. 
    
34. if(pGenericWind != NULL)
    
35. {
    
36. delete pGenericWind;
    
37. }
    
38. 
    
39. pBlkTableRecord->close();
    
40. 
    
41. // variables.
    
42. // g_bProceed = Adesk::kFalse;
    
43. 
    
44. }// if g_bProceed;
    
45. /* else
    
46. {
    
47. acutPrintf("\nUser cancelled. ");
    
48. }*/
    
49. 
    
50. 
    
51. Adesk::Boolean getModelSpaceRecord(AcDbBlockTableRecord*& pBlkTableRecord)
    
52. {
    
53. AcDbDatabase *pCurDb;
    
54. AcDbBlockTable *pBlkTable;
    
55. Acad::ErrorStatus es;
    
56. 
    
57. pCurDb = acdbHostApplicationServices()->workingDatabase();
    
58. 
    
59. es = pCurDb->getBlockTable(pBlkTable, AcDb::kForRead);
    
60. if(es != Acad::eOk)
    
61. {
    
62. acutPrintf("\nFailed to open Block Table for a read operation.");
    
63. return Adesk::kFalse;
    
64. }
    
65. 
    
66. es = pBlkTable->getAt(ACDB_MODEL_SPACE, pBlkTableRecord, AcDb::kForWrite);
    
67. if(es != Acad::eOk)
    
68. {
    
69. acutPrintf("\nFailed to open MODEL SPACE for a write operation.");
    
70. pBlkTable->close();
    
71. return Adesk::kFalse;
    
72. }
    
73. 
    
74. pBlkTable->close();
    
75. 
    
76. return Adesk::kTrue;
    
77. }
    
78. 
    

复制代码

frankzht

/*不小心打上去的 ，请问具体怎么改？

ishou

You have to do  pBlkTableRecord->close()  at several places.
It is easy!
You try by yourself!
Wish you success!

frankzht

我重新又改了几次 ，还是不能 open MODEL SPACE
有谁碰倒过 这种问题？？
帮解释一下。