[求助]关于acdbEntGetX函数
改函数取出的缓冲区列表(指定了APPNAME)是不是包括了不是扩展数据的数据? 我该怎么去里面找我的扩展数据；如果只是取出扩展数据，我的代码有错误吗？（取出了全部数据，我也不知道包含扩展数据没有）如下：struct resbuf appname = {NULL, RTSTR}, *we;
int status;
// APPNAME已经使用acdbRegApp注册成功
//
appname.resval.rstring = (char*) malloc(strlen(APPNAME) + 1);
strcpy(appname.resval.rstring, APPNAME);
ads_name wea;
AcDbObjectId ObjID;
AcDbObject *pObj = selectObject(ObjID, AcDb::kForRead);
if (!pObj)
{
acutPrintf("打开对象失败！");
}
status = acdbGetAdsName(wea, ObjID);
if (status == Acad::eError)
{
pObj->close();
acutPrintf("取得实体名称时发生错误！");
return;
}
pObj->close();
we = acdbEntGetX(wea, &appname);
if (we == NULL)
{
acutPrintf("取不到数据");
}
struct resbuf *pTmp;
pTmp = we->rbnext;
if (pTmp != NULL)
acutPrintf(pTmp->resval.rstring);
// pTmp = acutBuildList(RTSTR, "just a test", 0);
//
// we->rbnext = pTmp;
//
// status = acdbEntMod(we);
// if (status == RTNORM)
// {
// acutPrintf("OK");
// }
// else
// {
// acutPrintf("Fail");
// }
acutRelRb(we);
}
// 我主要是想用acdbEntMod修改扩展数据的内容，下面是ARX开发指南的一段
// 各位高手出招了，谢谢！
As the sample code shows, extended data retrieved by the acdbEntGetX() function can be modified by a subsequent call to acdbEntMod(), just as acdbEntMod() is used to modify normal definition data. (Extended data can also be created by defining it in the entity list passed to acdbEntMake().)
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