how to set Multi-Parms attribute list menu

[Arthur~Chiu]

i want to set  Multi-Parms attribute list menu,

single  attribute list menu i have been set right

below is code 

 

define funsion:

 

static void

buildAttrMenu(void *data, PRM_Name *theMenu, int theMaxSize, const PRM_SpareData *, PRM_Parm *)

{

SOP_Node *sop = CAST_SOPNODE((OP_Node *)data);

if( sop )

{

OP_Context context(0);

const GU_Detail *gdp =sop->getCookedGeo(context);

 

GA_AttributeFilter   attrib_filter(GA_AttributeFilter::selectAll());

GA_AttributeFilter   except_filter(GA_ATTRIB_FILTER_OR,GA_AttributeFilter::selectByName("filename"),GA_AttributeFilter::selectByName("P"));

except_filter = except_filter.selectOr(except_filter,GA_AttributeFilter::selectByName("maxbounds"),0);

except_filter = except_filter.selectOr(except_filter,GA_AttributeFilter::selectByName("pmatrix"),0);

except_filter = except_filter.selectOr(except_filter,GA_AttributeFilter::selectByName("minbounds"),0);

attrib_filter = attrib_filter.selectNot(except_filter,0);

 

unsigned int i =0 ;

for (GA_AttributeDict::iterator it =gdp->getAttributeDict(GA_ATTRIB_POINT).begin(GA_SCOPE_PUBLIC); !it.atEnd() && i<theMaxSize;++it)

      {

 

const GA_Attribute *attrib = it.attrib();

if (attrib_filter.match(attrib))

{

theMenu.setToken( attrib->getName() );

theMenu.setLabel( attrib->getName() );

i++;

}

}

 

theMenu.setToken(0);

theMenu.setLabel(0);

 

}

else

{

theMenu[0].setToken(0);

theMenu[0].setLabel(0);

}

}

 

 

define parms:

 

 

static PRM_Name        names[] = {

PRM_Name("attrib","Attribute Name"),

    PRM_Name()

};

 

 

static PRM_ChoiceList theFloatAttribMenu((PRM_ChoiceListType)( PRM_CHOICELIST_TOGGLE|PRM_CHOICELIST_WILD|PRM_CHOICELIST_REPLACE),(PRM_ChoiceGenFunc)buildAttrMenu);

 

static PRM_Template     theAttribTemplates[] = {

  

PRM_Template(PRM_STRING,1,&names[0],&attributeDefault,&theFloatAttribMenu),

 

 

    PRM_Template()

};

 

 

it work well

 

but when i change the parm to Multi-Parms,

code is :

 

static PRM_Name        names[] = {

PRM_Name("attrib#","Attribute Name"),

    PRM_Name()

};

 

it will popup error when create node in houdini,why and how to set Multi-Parms versions