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pckite

关于添加扩展数据时，遇到一个大问题，运行addXData() 时打印出：ERROR: could not set Data ：eRegappIdNotFound ,没能把数据添加，怎么办呢？ （If any of the regappNames in xdata are not in the APPID table, then Acad::eRegappIdNotFound is returned
说明我们注册appName不成功 ？acdbRegApp(appName);可能不成功，它返回的是一个数字，-5001 ） //－－－－－－－－－－－－－－
void addXData()
{
Acad::ErrorStatus es;
struct resbuf *pRb, *pTemp;
AcDbSymbolTable * appTable; char * appName="Test"; char * resString="abcdefgffff"; AcDbDatabase *pDb=acdbHostApplicationServices()->workingDatabase(); pDb->getRegAppTable(appTable,AcDb::kForWrite); pRb = appTable->xData(appName); if (pRb == NULL)
{
acdbRegApp(appName);
pRb = acutNewRb(AcDb::kDxfRegAppName); pTemp = pRb;
pTemp->resval.rstring = (char*) malloc(strlen(appName) + 1);
strcpy(pTemp->resval.rstring, appName);

}
else
{
for (pTemp = pRb; pTemp->rbnext != NULL;
pTemp = pTemp->rbnext)
{ ; }

acutPrintf("pRb != NULL\n");
}

pTemp->rbnext = acutNewRb(AcDb::kDxfXdAsciiString);
pTemp = pTemp->rbnext;
pTemp->resval.rstring
= (char*) malloc(strlen(resString) + 1);
strcpy(pTemp->resval.rstring, resString); appTable->upgradeOpen();
es=appTable->setXData(pRb);
acutPrintf(_T("\n ERROR: could not set Data (%s)\n"),acadErrorStatusText(es));

appTable->close(); 　　acutRelRb(pRb); 　　acutPrintf("add data is ok\n");

} //-------------------------------------------------

warmrain

添加扩展数据要有一个目标对象，你这里没有啊给你个例子 void

addXdata() 

{

    AcDbObject* pObj = selectObject(AcDb::kForRead);//选择一个对象，如一个圆什么的

    if (!pObj) {

        acutPrintf("Error selecting object\n");

        return;

    }

     //让用户输入application name 和要添加到xdata中的字符串

    char appName[132], resString[200];

    appName[0] = resString[0] = '\0';

    acedGetString(NULL, "Enter application name: ",

        appName);

    acedGetString(NULL, "Enter string to be added: ",

        resString);

    struct  resbuf  *pRb, *pTemp;

    pRb = pObj->xData(appName);

    if (pRb != NULL) {

        // 如果 xdata 存在,就找到扩展数据的尾部

        for (pTemp = pRb; pTemp->rbnext != NULL;

                pTemp = pTemp->rbnext)

                { ; }

    } else {

        // xdata 不存在，就注册 appName 

       acdbRegApp(appName);

        pRb = acutNewRb(AcDb::kDxfRegAppName);

        pTemp = pRb;

        pTemp->resval.rstring

            = (char*) malloc(strlen(appName) + 1);

        strcpy(pTemp->resval.rstring, appName);

    }

    // 添加用户输入的字符串到xdata.

    pTemp->rbnext = acutNewRb(AcDb::kDxfXdAsciiString);

    pTemp = pTemp->rbnext;

    pTemp->resval.rstring

        = (char*) malloc(strlen(resString) + 1);

    strcpy(pTemp->resval.rstring, resString);

    pObj->upgradeOpen();

    pObj->setXData(pRb);

    pObj->close();

    acutRelRb(pRb);

}

pckite

谢谢warmrain！添加扩展数据要有一个目标对象，我的目标是appTable啊， appTable->xData是存在的函数啊。