[每日一码] Using acedSSSetKwordCallbackPtr on selections

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1. void MyCustomCommand()
2. {
3.   // save the old callback function
4.   resbuf* (*oldFunc) (const ACHAR*);
5.   acedSSGetKwordCallbackPtr(&oldFunc);
7.   // set own callback function
8.   acedSSSetKwordCallbackPtr(ssCallback);
9.   // let the user make a selection
10.   ads采用name ss;
11.   // this is the keyword list
12.   // to use local and global keywords:
13.   ACHAR kwordlist[] = { 采用T("LInes CIRcles 采用 LInes CIRcles") };
15.   if (RTNORM != acedSSGet(采用T("采用:K"), NULL, kwordlist, NULL, ss)) {
16.     // cancel
17.   } else {
18.     acutPrintf(采用T("\nDone."));
19.     acedSSFree(ss);
20.   }
21.   // restore old callback function
22.   acedSSSetKwordCallbackPtr(*oldFunc);
23. }
25. [/it618postdisplay]
27. Now the callback that is executed when the keyword is selected:
29. 普通浏览复制代码
30. // Callback function for acedSSGet()
31. resbuf* ssCallback(const TCHAR* kword)
32. {
33.   // kword contains the global keyword
34.   acutPrintf(采用T("\nCallback: '%s'"), kword);
36.   // result to return
37.   // NULL: no changes on selection set
38.   resbuf *result = NULL;
40.   if (!wcscmp(kword, 采用T("LInes"))) {
41.     // select all lines (just for testing)
42.     AcDbObjectIdArray objIds;
43.     getLines(objIds);
44.     // create resbuf containing single
45.     // enames from object id array
46.     result = getResbuf(objIds);
47.   } else if (!wcscmp(kword, 采用T("CIRcles"))) {
48.     // select all circles (just for testing)
49.     AcDbObjectIdArray objIds;
50.     getCircles(objIds);
51.     // create resbuf containing a selection set
52.     ads采用name ss;
53.     acedSSGet(采用T("X"), NULL, NULL,
54.       acutBuildList(RTDXF0, 采用T("CIRCLE"), RTNONE),
55.       ss);
56.     result = acutBuildList(RTPICKS, ss, RTNONE);
57.   } else {
58.     // return an error message
59.     result = acutBuildList(RTSTR, 采用T("\nUnknown error"), RTNONE);
60.   }
61.   return result;
62. }
65. And finally some additional methods for this specific sample:
67. 普通浏览复制代码
68. resbuf* getResbuf(AcDbObjectIdArray ids)
69. {
70.   resbuf *result = NULL, *temp1, *temp2;
71.   ads采用name ename;
72.   int length = ids.length();
74.   for (int i = 0; i < length; ++i) {
75.     acdbGetAdsName(ename, ids<i>);
76.     temp2 = acutBuildList(RTENAME, ename, RTNONE);
77.     if (result == NULL) {
78.       result = temp2;
79.     } else {
80.       temp1->rbnext = temp2;
81.     }
82.     temp1 = temp2;
83.   }
85.   return result;
86. }
88. void getLines(AcDbObjectIdArray& ids)
89. {
90.   // select all lines from model space
91.   // (without any error checking)
92.   AcDbBlockTable *pTable;
93.   AcDbBlockTableRecord *pModelSpace;
94.   AcDbBlockTableRecordIterator *pIter;
95.   AcDbEntity* pEnt;
97.   acdbHostApplicationServices()->workingDatabase()->
98.     getBlockTable(pTable, AcDb::kForRead);
99.   pTable->getAt(ACDB采用MODEL采用SPACE, pModelSpace, AcDb::kForRead);
100.   pTable->close();
101.   pModelSpace->newIterator(pIter);
102.   pModelSpace->close();
104.   for (; !pIter->done(); pIter->step()) {
105.     pIter->getEntity(pEnt, AcDb::kForRead);
106.     if (pEnt->isKindOf(AcDbLine::desc()))
107.       ids.append(pEnt->objectId());
108.     pEnt->close();
109.   }
111.   delete pIter;
112. }
114. void getCircles(AcDbObjectIdArray& ids)
115. {
116.   // select all circles from model space
117.   // (without any error checking)
118.   AcDbBlockTable *pTable;
119.   AcDbBlockTableRecord *pModelSpace;
120.   AcDbBlockTableRecordIterator *pIter;
121.   AcDbEntity* pEnt;
123.   acdbHostApplicationServices()->workingDatabase()->
124.     getBlockTable(pTable, AcDb::kForRead);
125.   pTable->getAt(ACDB采用MODEL采用SPACE, pModelSpace, AcDb::kForRead);
126.   pTable->close();
127.   pModelSpace->newIterator(pIter);
128.   pModelSpace->close();
130.   for (; !pIter->done(); pIter->step()) {
131.     pIter->getEntity(pEnt, AcDb::kForRead);
132.     if (pEnt->isKindOf(AcDbCircle::desc()))
133.       ids.append(pEnt->objectId());
134.     pEnt->close();
135.   }
137.   delete pIter;
138. }

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