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admin 发表于 2024-3-14 20:59:37

[每日一码] Using acedSSSetKwordCallbackPtr on selections

void MyCustomCommand()
{
// save the old callback function
resbuf* (*oldFunc) (const ACHAR*);
acedSSGetKwordCallbackPtr(&oldFunc);

// set own callback function
acedSSSetKwordCallbackPtr(ssCallback);
// let the user make a selection
ads采用name ss;
// this is the keyword list
// to use local and global keywords:
ACHAR kwordlist[] = { 采用T("LInes CIRcles 采用 LInes CIRcles") };

if (RTNORM != acedSSGet(采用T("采用:K"), NULL, kwordlist, NULL, ss)) {
    // cancel
} else {
    acutPrintf(采用T("\nDone."));
    acedSSFree(ss);
}
// restore old callback function
acedSSSetKwordCallbackPtr(*oldFunc);
}



Now the callback that is executed when the keyword is selected:

普通浏览复制代码
// Callback function for acedSSGet()
resbuf* ssCallback(const TCHAR* kword)
{
// kword contains the global keyword
acutPrintf(采用T("\nCallback: '%s'"), kword);

// result to return
// NULL: no changes on selection set
resbuf *result = NULL;

if (!wcscmp(kword, 采用T("LInes"))) {
    // select all lines (just for testing)
    AcDbObjectIdArray objIds;
    getLines(objIds);
    // create resbuf containing single
    // enames from object id array
    result = getResbuf(objIds);
} else if (!wcscmp(kword, 采用T("CIRcles"))) {
    // select all circles (just for testing)
    AcDbObjectIdArray objIds;
    getCircles(objIds);
    // create resbuf containing a selection set
    ads采用name ss;
    acedSSGet(采用T("X"), NULL, NULL,
      acutBuildList(RTDXF0, 采用T("CIRCLE"), RTNONE),
      ss);
    result = acutBuildList(RTPICKS, ss, RTNONE);
} else {
    // return an error message
    result = acutBuildList(RTSTR, 采用T("\nUnknown error"), RTNONE);
}
return result;
}


And finally some additional methods for this specific sample:

普通浏览复制代码
resbuf* getResbuf(AcDbObjectIdArray ids)
{
resbuf *result = NULL, *temp1, *temp2;
ads采用name ename;
int length = ids.length();

for (int i = 0; i < length; ++i) {
    acdbGetAdsName(ename, ids<i>);
    temp2 = acutBuildList(RTENAME, ename, RTNONE);
    if (result == NULL) {
      result = temp2;
    } else {
      temp1->rbnext = temp2;
    }
    temp1 = temp2;
}

return result;
}

void getLines(AcDbObjectIdArray& ids)
{
// select all lines from model space
// (without any error checking)
AcDbBlockTable *pTable;
AcDbBlockTableRecord *pModelSpace;
AcDbBlockTableRecordIterator *pIter;
AcDbEntity* pEnt;

acdbHostApplicationServices()->workingDatabase()->
    getBlockTable(pTable, AcDb::kForRead);
pTable->getAt(ACDB采用MODEL采用SPACE, pModelSpace, AcDb::kForRead);
pTable->close();
pModelSpace->newIterator(pIter);
pModelSpace->close();

for (; !pIter->done(); pIter->step()) {
    pIter->getEntity(pEnt, AcDb::kForRead);
    if (pEnt->isKindOf(AcDbLine::desc()))
      ids.append(pEnt->objectId());
    pEnt->close();
}

delete pIter;
}

void getCircles(AcDbObjectIdArray& ids)
{
// select all circles from model space
// (without any error checking)
AcDbBlockTable *pTable;
AcDbBlockTableRecord *pModelSpace;
AcDbBlockTableRecordIterator *pIter;
AcDbEntity* pEnt;

acdbHostApplicationServices()->workingDatabase()->
    getBlockTable(pTable, AcDb::kForRead);
pTable->getAt(ACDB采用MODEL采用SPACE, pModelSpace, AcDb::kForRead);
pTable->close();
pModelSpace->newIterator(pIter);
pModelSpace->close();

for (; !pIter->done(); pIter->step()) {
    pIter->getEntity(pEnt, AcDb::kForRead);
    if (pEnt->isKindOf(AcDbCircle::desc()))
      ids.append(pEnt->objectId());
    pEnt->close();
}

delete pIter;
}

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