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pckite · 发表于 2004-7-21 14:06:00

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 · 发表于 2004-7-21 14:45:00

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 · 发表于 2004-7-21 15:13:00

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。

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