C++ AcDbObject::setXData方法代码示例

void addXData()
{
	// Get an Entity.
	ads_name mnEnt;
    ads_point ptSel;
    int nRet = acedEntSel(_T("\nSelect an Entity: "), mnEnt, ptSel);
	if (nRet != RTNORM)
		return;
	AcDbObjectId oid;
	
    Acad::ErrorStatus retStat;
    retStat = acdbGetObjectId(oid, mnEnt);
    if (retStat != Acad::eOk)
		return;

    AcDbObject* pObj = NULL;

    if ((retStat = acdbOpenObject(pObj, oid, AcDb::kForRead)) != Acad::eOk)
    {
        return;
    }
	// Get new XData.
	TCHAR appName[132] = {0};
	TCHAR resString[200] = {0};

    acedGetString(NULL, _T("\nEnter application name: "), appName);
    acedGetString(NULL, _T("\nEnter string to be added: "), resString);

    // XData
    resbuf *pRb = NULL;
	resbuf *pTemp = NULL;
    
    pRb = pObj->xData(appName);

    if (pRb != NULL)
	{
        for (pTemp = pRb; pTemp->rbnext != NULL; pTemp = pTemp->rbnext);
    }
	else
	{
        acdbRegApp(appName);
        pRb = acutNewRb(AcDb::kDxfRegAppName);
        pTemp = pRb;
        pTemp->resval.rstring = (TCHAR*)malloc((_tcslen(appName) + 1) * sizeof(TCHAR));
        _tcscpy(pTemp->resval.rstring, appName);
    }

    pTemp->rbnext = acutNewRb(AcDb::kDxfXdAsciiString);
    pTemp = pTemp->rbnext;
    pTemp->resval.rstring = (TCHAR*)malloc((_tcslen(resString) + 1) * sizeof(TCHAR));
    _tcscpy(pTemp->resval.rstring, resString);

	// Set XData.
    pObj->upgradeOpen();
    pObj->setXData(pRb);
    
    pObj->close();
    acutRelRb(pRb);
}

void 
addXdata() 
{
    AcDbObject* pObj = selectObject(AcDb::kForRead);
    if (!pObj) {
        acutPrintf(_T("Error selecting object\n"));
        return;
    }

    
    // Get the application name and string to be added to
    // xdata.
    //
    TCHAR appName[132], resString[200];
    appName[0] = resString[0] = _T('\0');

    acedGetString(NULL, _T("Enter application name: "),
        appName);
    acedGetString(NULL, _T("Enter string to be added: "),
        resString);

    
    struct  resbuf  *pRb, *pTemp;
    
    pRb = pObj->xData(appName);

    if (pRb != NULL) {

        // If xdata is present, then walk to the
        // end of the list.
        //
        for (pTemp = pRb; pTemp->rbnext != NULL;
                pTemp = pTemp->rbnext)
                { ; }
    } else {
        // If xdata is not present, register the application
        // and add appName to the first resbuf in the list.
        // Notice that there is no -3 group as there is in
        // AutoLISP. This is ONLY the xdata so
        // the -3 xdata-start marker isn't needed.
        // 
        acdbRegApp(appName);

        pRb = acutNewRb(AcDb::kDxfRegAppName);
        pTemp = pRb;
        const size_t nSize = _tcslen(appName) + 1;
        pTemp->resval.rstring
            = (TCHAR*) malloc(nSize * sizeof(TCHAR));
        errno_t err = _tcscpy_s(pTemp->resval.rstring, nSize, appName);
        assert(err == 0);
    }

    // Add user-specified string to the xdata.
    //
    pTemp->rbnext = acutNewRb(AcDb::kDxfXdAsciiString);
    pTemp = pTemp->rbnext;
    const size_t nSize = _tcslen(resString) + 1;
    pTemp->resval.rstring
        = (TCHAR*) malloc(nSize * sizeof(TCHAR));
    errno_t err = _tcscpy_s(pTemp->resval.rstring, nSize, resString);
    assert(err == 0);

    // The following code shows the use of upgradeOpen()
    // to change the entity from read to write.
    //
    pObj->upgradeOpen();
    pObj->setXData(pRb);
    
    pObj->close();
    acutRelRb(pRb);
}

bool addXData()
{
	Acad::ErrorStatus es, esTmp;
	CLogger::Print(_T("*Call: addXData()"));

	//------------
	// Require to select an entity.
	AcDbObject* pObj = selectObject(AcDb::kForRead);
	if (!pObj) {
		CLogger::Print(_T("*Exit: addXData() - Khong chon duoc object!"));
		return false;
	}

	//------------
	// Require to enter the application name, then require to enter its string value.
	ACHAR appName[133], resString[133];
	appName[0] = resString[0] = L'\0';
	acedGetString(NULL, ACRX_T("\nEnter application name: "), appName);
	acedGetString(NULL, ACRX_T("\nEnter string to be added: "), resString);

	CLogger::Print(_T("Inform: Found out application name '%s'!"), appName);
	struct resbuf * pRb;
	struct resbuf * pTemp;
	pRb = pObj->xData(appName);

	if (pRb) {
		// If the appname is existing! Seek to the tail of resbuf link list.
		CLogger::Print(_T("Inform: Found out application name '%s' - Seek to the end of resbuf link list."), appName);
		for (pTemp = pRb; pTemp->rbnext; pTemp = pTemp->rbnext) {}
	} else {
		// If the appname is not existing! Register a new application name.
		CLogger::Print(_T("Inform: The application name %s is not existing, register this application name!"), appName);
		acdbRegApp(appName);

		// Then create new resbuf to copy the application name into it.
		pRb = acutNewRb(AcDb::kDxfRegAppName);
		pTemp = pRb;
		pTemp->resval.rstring = (ACHAR*) malloc((lstrlen(appName) + 1) * sizeof(ACHAR));
		lstrcpy(pTemp->resval.rstring, appName);
	}

	//------------
	// Create new resbuf at the tail of the link list, then copy the value string into it.
	pTemp->rbnext = acutNewRb(AcDb::kDxfXdAsciiString);
	pTemp = pTemp->rbnext;
	pTemp->resval.rstring = (ACHAR*) malloc((lstrlen(resString) + 1) * sizeof(ACHAR));
	lstrcpy(pTemp->resval.rstring, resString);

	CLogger::Print(_T("Inform: Upgrade object opening!"));
	if (Acad::eOk != (es = pObj->upgradeOpen())) {
		CLogger::Print(_T("*Exit: addXData() - Fail to upgrade opening object!"));
		pObj->close();
		acutRelRb(pRb);
		return false;
	}

	//------------
	// Set object's xData.
	pObj->setXData(pRb);
	pObj->close();
	acutRelRb(pRb); // remember to release resbuf after using
	CLogger::Print(_T("*Exit: addXData()!"));
	return true;
}