【转帖】反应器实例
 

反应器实例
反应器实例
exam10a.cpp代码：
#include "rxobject.h"
#include "rxregsvc.h"
#include "rxdlinkr.h"
#include "rxditer.h"
#include "aced.h"
#include "dbmain.h"
#include "dbdict.h"
#include "dbidmap.h"
#include "dbapserv.h"
#include "adslib.h"
void printdbevent(const acdbobject *,const char * eventstr);
void printobj(const acdbobject * pobj);
void watchdb();
void clearreactors();
extern "c"
acrx::appretcode acrxentrypoint(acrx::appmsgcode ,void *);
class mydbreactor;
long gentacc =0;
mydbreactor *gpdbr=null;
class mydbreactor :public acdbdatabasereactor
{
public:
virtual void objectappended(const acdbdatabase * dwg,
const acdbobject *dbobj);
virtual void objectmodifier(const acdbdatabase * dwg,
const acdbobject *dbobj);
virtual void objecterased(const acdbdatabase * dwg,
const acdbobject * dbobj,adesk::boolean perased);
};
void mydbreactor::objectappended(const acdbdatabase * db,
const acdbobject *pobj)
{
printdbevent(pobj,"objectappended");
acutprintf("db==%lx\n",(long)db);
gentacc++;
acutprintf("entity count=%d\n",gentacc);
}
void mydbreactor::objectmodifier(const acdbdatabase *db,
const acdbobject *pobj)
{
printdbevent(pobj,"objectmodified");
acutprintf("db==%=%lx\n",(long)db);
}
void mydbreactor::objecterased(const acdbdatabase * db,
const acdbobject *pobj,
adesk::boolean perased)
{
if(perased)
{
printdbevent(pobj,"objecterased");
gentacc--;
}
else
{
printdbevent(pobj,"object (un)erased");
gentacc++;
}
acutprintf("db=%lx\n",(long)db);
acutprintf("entity count=%d\n",gentacc);
}
void printdbevent(const acdbobject * pobj,
const char * pevent)
{
acutprintf("event::acdbdatabasereactor::%s",pevent);
printobj(pobj);
}
void printobj(const acdbobject *pobj)
{
if(pobj==null)
{
acutprintf("(null)");
return;
}
acdbhandle objhand;
char handbuf[17];
pobj->getacdbhandle(objhand);
objhand.getintoasciibuffer(handbuf);
acutprintf("\n (class==%s,handle==%s,id==%lx,db==%lx)",
pobj->isa()->name(),handbuf,
pobj->objectid().asoldid(),pobj->database());
}
void watchdb()
{
if(gpdbr==null)
{
gpdbr=new mydbreactor();
}
acdbhostapplicationservices()->workingdatabase()
->addreactor(gpdbr);
acutprintf("added database reactor to"
"acdbhostapplicationservices()->workingdatabase().\n");
}
void clearreactors()
{
if(acdbhostapplicationservices()->workingdatabase()!=null)
{
acdbhostapplicationservices()->workingdatabase()
->removereactor(gpdbr);
delete gpdbr;
gpdbr=null;
}
}
acrx::appretcode
acrxentrypoint(acrx::appmsgcode msg,void * appid)
{
switch(msg)
{
case acrx::kinitappmsg:
acrxdynamiclinker->unlockapplication(appid);
acrxdynamiclinker->registerappnotmdiaware(appid);
acedregcmds->addcommand("exam10a",
"watch",
"watch",
acrx_cmd_transparent,
watchdb);
acedregcmds->addcommand("exam10a",
"clear",
"clear",
acrx_cmd_transparent,
clearreactors);
break;
case acrx::kunloadappmsg:
clearreactors();
acedregcmds->removegroup("exam10a");
break;
}
return acrx::kretok;
}
exam10a.def代码：
library exam10a
description "exam10a application"
exports
acrxentrypoint private
acrxgetapiversion private

开发环境：vc++6.0
使用环境：autocad2
调试和使用通过。与大家共免。
vc++ 中的环境要设置一下。