the qmessagebox is in the below void that will loop every 5 sec. and so the messagebox will popup every 5 sec as well, is there a way to let the message box just pop up once? but at the same time, the void is still looping every 5 sec??

Qt Code: 
  1. void Node::updateData(int index)
  2. {
  3. 	//setNodeData(index);
  4.  
  5. 	DB_OPEN
  6.     NodeDb::DATA *pData;
  7.     pNodeDb->getData(index, &pData);
  8.  
  9.     nodeData.temp= pData->temp;
  10.     nodeData.voltage = pData->voltage;
  11.     nodeData.type = pData->type;
  12.     nodeData.strength = pData->strength;
  13. 	nodeData.re = pData->re;
  14. 	nodeData.t_time_on = pData->t_time_on;
  15.  
  16. 	nodeData.fadeNumber=pData->fadeNumber; 
  17. 	nodeData.fadeTime =pData->fadeTime ;
  18. 	nodeData.newNode=pData->newNode;
  19. 	nodeData.deletedNode=pData->deletedNode;
  20.  
  21.     setColor(nodeData.type);
  22.  
  23.     if (pData->status == NodeDb::DS_MOVE)
  24.     {
  25.         newPos.setX(pData->xpos);
  26.         newPos.setY(pData->ypos);
  27.         advance();
  28.     }
  29.  
  30. 	if (nodeData.addr==0){
  31. 		nodeData.fadeNumber = 255;//pData->fadeNumber;
  32. 		//ap_counter=apcount;
  33. 		updated = true;
  34. 		update();
  35. 		if (!updateTimerId) 
  36. 		{
  37. 			updateTimerId = startTimer(200);
  38. 		}
  39. 	}
  40.  
  41. 	timeStamp.restart();
  42.  
  43. 	if (nodeData.addr!=0)
  44. 	{
  45. 		updated = true;
  46. 		update();
  47. 		if(nodeData.temp > ((alertTemp*9)/5+32.0)||(edStrength > alertDistance))
  48. 		{	
  49. 		QSound::play("sound/alert.wav");
  50. 		QMessageBox::critical(NULL, tr("Alert"), tr("High temperature is being detected!!!")); 
  51. 		}
  52. 	}
  53. }
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