Category Description
Price, size, time and exchange of last trade reports that occur at the prevailing bid or ask price.
Category Identification
| pNxCoreMessage->coreData.Category.pnxStringCategory->Atom | 27 | 
| pNxCoreMessage->coreData.Category.pnxStringCategory->String | NxLastTrade | 
Update Time and Frequency
| Approximate Time | Info | 
|---|---|
| 00:00 AM | Information from previous session | 
| 05:15 AM | Current session information | 
Category Fields | 8
| Index | FieldName | FieldType | C Code | Info | 
|---|---|---|---|---|
| 0 | AtBidTradePrice | NxCFT_PRICE | pnxFields[0].data.nxPrice | Price of last trade occurring at the Bid Price | 
| 1 | AtAskTradePrice | NxCFT_PRICE | pnxFields[1].data.nxPrice | Price of last trade occurring at the Ask Price | 
| 2 | AtBidTradeSize | NxCFT_32BIT | pnxFields[2].data.i32Bit | Size of trade | 
| 3 | AtAskTradeSize | NxCFT_32BIT | pnxFields[3].data.i32Bit | Size of trade | 
| 4 | AtBidTradeTime | NxCFT_TIME | pnxFields[4].data.nxTime | Exchange timestamp of trade | 
| 5 | AtAskTradeTime | NxCFT_TIME | pnxFields[5].data.nxTime | Exchange timestamp of trade | 
| 6 | AtBidTradeExg | NxCFT_STRING_IDX | pnxFields[6].data.stringTableItem | Exchange where trade executed, from table table_NxST_EXCHANGE.html | 
| 7 | AtAskTradeExg | NxCFT_STRING_IDX | pnxFields[7].data.stringTableItem | Exchange where trade executed, from table table_NxST_EXCHANGE.html | 
Code Sample from CategoryDumper project:
void onNxCoreCategory_27(const NxCoreMessage *pNxCoreMsg)
{
     NxCategoryField *pField;
			 
     // Print the category num and the Symbol
     PrintSymbol(pNxCoreMsg); 			 
 			 
     pField=&pNxCoreMsg->coreData.Category.pnxFields[0];
     if (pField->Set)
         printf("AtBidTradePrice: %0.4f \n",
                pfNxCorePriceToDouble(pField->data.nxPrice.Price,
                                      pField->data.nxPrice.PriceType)); 			 
 			 
     pField=&pNxCoreMsg->coreData.Category.pnxFields[1];
     if (pField->Set)
         printf("AtAskTradePrice: %0.4f \n",
                pfNxCorePriceToDouble(pField->data.nxPrice.Price,
                                      pField->data.nxPrice.PriceType)); 			 
 			 
     pField=&pNxCoreMsg->coreData.Category.pnxFields[2];
     if (pField->Set)			 
         printf("AtBidTradeSize: %d \n",pField->data.i32Bit); 			 
 			 
     pField=&pNxCoreMsg->coreData.Category.pnxFields[3];
     if (pField->Set)			 
         printf("AtAskTradeSize: %d \n",pField->data.i32Bit); 			 
 			 
     pField=&pNxCoreMsg->coreData.Category.pnxFields[4];		 
     if (pField->Set)
         printf("AtBidTradeTime: %02d:%02d:%02d \n",
                pField->data.nxTime.Hour,
                pField->data.nxTime.Minute,
                pField->data.nxTime.Second); 			 
 			 
     pField=&pNxCoreMsg->coreData.Category.pnxFields[5];		 
     if (pField->Set)
         printf("AtAskTradeTime: %02d:%02d:%02d \n",
                pField->data.nxTime.Hour,
                pField->data.nxTime.Minute,
                pField->data.nxTime.Second); 			 
 			 
     // See table_NxST_EXCHANGE.html for exchange codes
     pField=&pNxCoreMsg->coreData.Category.pnxFields[6];		 
     if (pField->Set)
         printf("AtBidTradeExg:  Table - %d  Exchange - %d\n",
                pField->data.stringTableItem.ixTable,
                pField->data.stringTableItem.idString); 			 
 			 
     // See table_NxST_EXCHANGE.html for exchange codes
     pField=&pNxCoreMsg->coreData.Category.pnxFields[7];		 
     if (pField->Set)
         printf("AtAskTradeExg:  Table - %d  Exchange - %d\n",
                pField->data.stringTableItem.ixTable,
                pField->data.stringTableItem.idString);     
}