《ObjectARX实用指南——AutoCAD二次开发》第14章协议扩展问题
class AdskEntTemperature : public AcRxObject{
public:
ACRX_DECLARE_MEMBERS( AsdkEntTemperature );
virtual double reflectedEnergy( AcDbEntity * ) const = 0;
};
ACRX_NO_DEFINE_MEMBERS( AsdkEntTemperature, AcRxObject);
//////////////////////////////////////
class AdskDefaultTemperature : public AdskEntTemperature
{
public:
virtual double reflectedEnergy(AcDbEntity * pEnt) const;
}
double AdskDefaultTemperature::reflectedEnergy(AcDbEntity * pEnt) const
{
acutPrintf("\nThis entity has no aarea, and no reflection.\n");
return -1.0;
}
//////////////////////////////////////
class AdskRegionTemperature : public AdskEntTemperature
{
public:
virtual double reflectedEnergy(AcDbEntity * pEnt) const;
}
double AdskRegionTemperature::reflectedEnergy(AcDbEntity * pEnt) const
{
AcDbRegion * pRegion = AcDbRegion::cast( pTnt );
if ( pRegion == NULL )
acutPrintf("\nThis impossible has happened!\n");
double retVal;
if (pRegion->getArea( retVal ) != Acad::eOK )
return -1.0;
return retVal*42.0;
}
//////////////////////////////////////
class AdskCircleTemperature : public AdskEntTemperature
{
public:
virtual double reflectedEnergy(AcDbEntity * pEnt) const;
}
double AdskCircleTemperature::reflectedEnergy(AcDbEntity * pEnt) const
{
AcDbCircle * pCircle = AcDbCircle::cast( pTnt );
if ( pCircle == NULL )
acutPrintf("\nThis impossible has happened!\n");
return pCircle->radius()*6.21*42.0;
}
void energy()
{
AcDbEntity *pEnt;
AcDbObjectId pEntId;
ads_name en;
ads_point pt;
if ( acedEntSel("\nSelect an Entity:", en, pt) != RTNORM )
{
acutPrintf("Nothing Selected\n");
return;
}
acdbGetObjectId( pEntId, en );
acdbOpenObject( pEnt, pEntId, Acdb::kForRead );
double eTemp = ACRX_X_CALL( pEnt, AsdkEntTemperature ) ->reflectedEnergy( pEnt );
acutPrintf("\nEnergy == %f \n", eTemp );
pEnt->close();
}
为什么我在入口函数文件头中一定义上述头文件，就会出错：
d:\二次开发\cascoacds\adskenttemperature.h(8) : error C2143: syntax error : missing ';' before '*'
d:\autocad二次开发\cascoacds\adskenttemperature.h(8) : error C2501: 'cast' : missing storage-class or type specifiers
d:\autocad二次开发\cascoacds\adskenttemperature.h(8) : warning C4183: 'cast': member function definition looks like a ctor, but name does not match enclosing class
d:\autocad二次开发\cascoacds\adskenttemperature.h(13) : error C2065: 'AsdkEntTemperature' : undeclared identifier
d:\autocad二次开发\cascoacds\adskenttemperature.h(13) : error C2275: 'AcRxObject' : illegal use of this type as an expression
c:\objectarx2002\inc\rxobject.h(33) : see declaration of 'AcRxObject'
d:\autocad二次开发\cascoacds\adskenttemperature.h(13) : error C2501: 'ACRX_NO_DEFINE_MEMBERS' : missing storage-class or type specifiers
d:\autocad二次开发\cascoacds\adskenttemperature.h(13) : error C2078: too many initializers
应该是什么地方的设置不对，请做过的各位前辈指点。先谢谢你们了。
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