[求助]版主救命啊！为什么不能这样？

pckite

我想把数据存到Table里，不知这样为什么不行？
struct resbuf *pRb, *pTemp;
AcDbSymbolTable * appTable;
char * appName="smartTest";
char * resString="abcdefgffff"; AcDbDatabase *pDb=acdbHostApplicationServices()->workingDatabase();
pDb->getRegAppTable(appTable,AcDb::kForWrite);
pRb = appTable->xData(appName);//（能这样吗？）
。。。。
。。。。
读出来是怎么样读的？我找了相关资料都没有，救救我啊，版主！！！！
这dispbbs.asp?BoardID=14&ID=19010&replyID=10168&skin=1有个例子，但是它是对某一具体的对象进行操作的，而我们操作的是当前的图形。

spaceh

可以参考一下这个例子： void addXdata()
{
struct resbuf* prbX;
char appname[] = {"SPACEH"};
char windotype[] = {"Rect"};
ads_name ename;
AcDbObjectId entId;
AcDbObject* pObj; AcGePoint2d sp(getWindowStartPoint()); ads_point lwrleft;
lwrleft[X] = sp.x;
lwrleft[Y] = sp.y;
lwrleft[Z] = 0.0; acdbRegApp("SPACEH"); prbX = acutBuildList(AcDb::kDxfRegAppName, appname,
AcDb::kDxfXdAsciiString, windotype,
AcDb::kDxfXdInteger32, getWindowRows(),
AcDb::kDxfXdInteger32, getWindowCols(),
AcDb::kDxfXdReal, getWindowLength(),
AcDb::kDxfXdReal, getWindowHeight(),
AcDb::kDxfXdWorldXCoord, lwrleft,
RTNONE);
// Get the last entity
acdbEntLast(ename);
// Get the entity object ID
acdbGetObjectId(entId, ename); // Open the enity for a write operation
acdbOpenObject(pObj, entId, AcDb::kForWrite); // Add the extended entity data to the entity
pObj->setXData(prbX); pObj->close(); acutRelRb(prbX);
} void printXdata()
{
struct resbuf* prbX;
struct resbuf* pTemp;
char appname[] = {"SPACEH"};
ads_name ename;
AcDbObjectId entId;
AcDbObject* pObj; // Get the last entity
acdbEntLast(ename);
// Get the entity object ID
acdbGetObjectId(entId, ename); // Open the enity for a write operation
acdbOpenObject(pObj, entId, AcDb::kForRead); // Add the extended entity data to the entity
prbX = pObj->xData(appname); pObj->close(); // Print out the extended entity data
// Here I know the order of the extended entity data
pTemp = prbX; // Bypass the application name
pTemp = pTemp->rbnext;
acutPrintf("\nWindow Type = %s", pTemp->resval.rstring); pTemp = pTemp->rbnext;
acutPrintf("\nRows = %d", pTemp->resval.rint); pTemp = pTemp->rbnext;
acutPrintf("\nCols = %d", pTemp->resval.rint); pTemp = pTemp->rbnext;
acutPrintf("\nLength = %.2lf", pTemp->resval.rreal); pTemp = pTemp->rbnext;
acutPrintf("\nHeight = %.2lf", pTemp->resval.rreal); pTemp = pTemp->rbnext;
acutPrintf("\nStart Point = (%.2lf, %.2lf)", pTemp->resval.rpoint[X], pTemp->resval.rpoint[Y]);
acutRelRb(prbX);
}

pckite

非常感谢spaceh！ prbX = pObj->xData(appname);能不能换成pRb = appTable->xData(appname);能这样吗？这样又怎么办呢？