【转帖】《objectarx实用指南——autocad二次开发》第14章协议扩展问题
 

《objectarx实用指南——autocad二次开发》第14章协议扩展问题
《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:\autocad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:\objectarx2\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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