exam10a.cpp

ARX/CAD二次开发

#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 objectModified(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::objectModified(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;
}