Hi,

I have some code which creates a thread which basically just emits a signal back to the worker thread which puts a string into a QListWidget. Problem is, the items in the list widget are not shown until the worker thread has finished what it was doing?

This is some of the code :

Qt Code: 
  1. void CInitialiseThread::run()
  2. {
  3. 	while( !m_bStopped )
  4. 	{
  5. 		emit AddInfo();
  6. 		msleep( 10 );
  7. 	}
  8. }
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Thread is created in the following function :

Qt Code: 
  1. void CanView::LoadupDetails()
  2. {
  3. 	if( theApp->m_pWorkspace )
  4. 	{
  5.  
  6. 		m_pCanInitialiseThread = new CInitialiseThread();
  7.  
  8. 		connect( m_pCanInitialiseThread, SIGNAL(AddInfo()), this,
  9. 								   SLOT(AddInfo()) );
  10.  
  11. 		if( !m_pCanInitialiseThread->isRunning() )
  12. 		{
  13. 			m_pCanInitialiseThread->start();
  14. 		}
  15.  
  16. 		QList<CCanChannel*>*pcanFilterObj = &theApp->m_pWorkspace->m_oCanChannels;
  17. 		if( pcanFilterObj )
  18. 		{
  19. 			for( int i = 0; i < pcanFilterObj->count(); i++ )
  20. 			{
  21. 				CCanChannel* pCanChannel = (CCanChannel*)pcanFilterObj->at( i );
  22. 				if( pCanChannel )
  23. 				{
  24. 					int nChannel = ui.canBox->currentIndex() + 1;
  25. 					QString strId;
  26. 					strId.sprintf( "%i", nChannel );
  27. 					if( pCanChannel->m_strCanChannel == strId )
  28. 					{
  29. 						// found channel we want
  30. 						int nBaud = ui.baudBox->findText( pCanChannel->m_strBaud );
  31. 						ui.baudBox->setCurrentIndex( nBaud );
  32. 						if( pCanChannel->m_pCanFilter )
  33. 						{
  34. 							// set extended flag and can id flag
  35. 							//ui.Extended->setChecked( pCanChannel->m_pCanFilter->m_bExtended );
  36. 							//ui.canIdCheck->setChecked( pCanChannel->m_pCanFilter->m_bFilterOnId );
  37.  
  38. 							//ui.canIdList->clear();
  39.  
  40. 							QString strId = "";
  41. 							// any filtering on canid's?
  42. 							for( int j = 0; j < pCanChannel->m_oFilterIdList.count(); j++ )
  43. 							{
  44. //								ui.canIdList->addItem( pCanChannel->m_oFilterIdList.at(j) );
  45. 								int nHex = pCanChannel->m_oFilterIdList.at(j).toInt( 0, 16 );
  46. 								strId.sprintf( "%x", nHex );
  47. 								theApp->AddFilterByCanId( strId, theApp->GetChannelID()+1 );//1 );
  48. 							}
  49.  
  50.  
  51. 							CCanFilterDetails* pCanDetails;
  52. 							for( int jj = 0; jj < pCanChannel->m_pCanFilter->m_oCanFilterDetails.count(); jj++ )
  53. 							{
  54. 								pCanDetails = (CCanFilterDetails*)pCanChannel->m_pCanFilter->m_oCanFilterDetails.at(jj);
  55.  
  56. 								// Configure can - does passthruconnect for each filter
  57. 								long lFlags = 0;
  58. 								bool ok;
  59. 								int iMask = pCanDetails->m_strMask.toLong( &ok, 16 );
  60. 								int iPattern = pCanDetails->m_strAccept.toLong( &ok, 16 );
  61.  
  62. 								if( pCanChannel->m_pCanFilter->m_bExtended )
  63. 									lFlags = 0x100;
  64.  
  65. 								QString strFilterType = pCanDetails->m_strType;
  66. 								if( pCanChannel->m_pCanFilter->m_bExtended )
  67. 									lFlags = 0x100;
  68.  
  69. 								QString strCanChannel = pCanChannel->m_strCanChannel;// ui.canChannels->currentText();
  70. 								int nBaud = pCanChannel->m_strBaud.toInt();//ui.baudRate->currentText().toInt();
  71. 								int iReply = theApp->ConfigureCan( nBaud, nBaud, strCanChannel );  // configre can first
  72.  
  73. 								unsigned long iFilterId = SetFilter( pCanDetails->m_strMask, pCanDetails->m_strAccept, lFlags, 1, TRUE );
  74.  
  75.  
  76. 							}					
  77. 						}
  78.  
  79. 						break;
  80. 					}
  81. 				}
  82.  
  83. 			}
  84. 		}
  85. 	}
  86. 	if( m_pCanInitialiseThread->isRunning() )
  87. 	{
  88. 		m_pCanInitialiseThread->stop();
  89. 		m_pCanInitialiseThread->wait();
  90. 	}
  91. }
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The Addinfo basically just adds a QString to a QListWidget. I don't know why the QListWidget isn't being updated every 10ms?

Guess I'm doing something wrong or there is no CPU time?

Regards,
Steve