【转帖】[求助]如何正确调用数据库类的insert()函数？
 

[求助]如何正确调用数据库类的insert()函数？
[求助]如何正确调用数据库类的insert()函数？
我想用一个dwg文件保存所有的预定义图块（图块较小），并且随时接受用户的定义，并插入到该文件中。我的思路如下：用户在当前文档中定义完形成图块的所有图形元素后，程序提示用户输入图块名，然后将其用acdbdatabase::insert(&acdbobjectid,char*,acdbdatabase*)函数以图块的形式插入到预定义图形文件中，然而该函数的返回代码是16，即benullobjectid，结果预定义图形文件中没有该图块，不知道这是什么原因。
我将代码贴在下面（实际的实现情况稍有出入，请大家指正）：
cstring prompt;
prompt.format("\n%s","请选择组成块的图形：");
acutprintf("%s",prompt);
ads_name ssname;
acedssget(null,null,null,null,ssname);
prompt.format(_t("\n%s"),"请输入所要创建块的名称：");
char input[20];
int rc;
rc=acedgetstring(0,prompt,input);
if (rc!=rtnorm) {
return;
}
acdbdatabase* pcurdbdatabase;
pcurdbdatabase=acdbhostapplicationservices()->workingdatabase();
acdbblocktable *pdbblocktable;
pcurdbdatabase->getsymboltable(pdbblocktable,acdb::kforwrite);
acdbblocktablerecord *pdbblocktablerecord;
pdbblocktablerecord=new acdbblocktablerecord;
pdbblocktablerecord->setname(input);
acdbobjectid blocktableid;
pdbblocktable->add(blocktableid,pdbblocktablerecord);
pdbblocktable->close();
long length_sel;
acedsslength(ssname,&length_sel);
ads_name entres;
acdbobjectid oid;
acarray entitiestomove;
entitiestomove.append(oid);
for(long i=0;i {
acedssname(ssname,i,entres);
acdbgetobjectid(oid,entres);
entitiestomove[0]=oid;
pdbblocktablerecord->assumeownershipof(entitiestomove);
}
pdbblocktablerecord->close();
acedssfree(ssname);
acdbblockreference * pblockreference;
pblockreference=new acdbblockreference;
pblockreference->setblocktablerecord(blocktableid);
pcurdbdatabase->getsymboltable(pdbblocktable,acdb::kforread);
pdbblocktable->getat(acdb_model_space,pdbblocktablerecord,acdb::kforwrite);
pdbblocktable->close();
acdbobjectid blocktablerecordid;
pdbblocktablerecord->appendacdbentity(blocktablerecordid,pblockreference);
pdbblocktablerecord->close();
pblockreference->close();／／这里是为调试编写的，实际运行时，发现该图块的引用不能进行拖动操作
acdbdatabase * newdb;
newdb=new acdbdatabase(adesk::kfalse);
cstring strpath = appfullpath;//appfullpath 为预定义的应用程序路径
strpath = strpath.left(strpath.reversefind('\')) + "\\support\\temp.dwg";
pcurdbdatabase->wblock(newdb,blocktableid);
newdb->saveas(strpath);
strpath = strpath.left(strpath.reversefind('\')) + "\\support\\test.dwg";
acdbdatabase* pdbdatabase_block;
pdbdatabase_block=new acdbdatabase(adesk::kfalse);
pdbdatabase_block->readdwgfile(strpath,_sh_denyrw);
acdbobjectid blockid;
acad::errorstatus es;
es=pdbdatabase_block->insert(blockid,input,newdb);
if (es!=acad::eok) {
acutprintf("\n%s,%d","有错误！",es);
}
delete newdb;
pdbdatabase_block->save();
delete pdbdatabase_block;
真诚希望大家能指出问题所在