How to capture qDebug() messages on the phone?

[qlencjusz]

Where is the log file from qDebug(), or how can I enable it on s60?


Pawel

[isalento]

Hi,

You can control qDebug messages by installing a Qt message handler

http://doc.trolltech.com/4.5/qtgloba...tallMsgHandler

void debugOutput(QtMsgType type, const char *msg)
 {
     switch (type) 
     {
         case QtDebugMsg:
			
	 QFile file("C:\\Data\\debug.txt");
		    
	 if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
	      return;
		    
	 QTextStream out(&file);
	 out << "Debug: ";
	 out << msg;
	 break;
	 ....
	 //the rest of the message types
     }
 }


int main(int argc, char *argv[])
{
	qInstallMsgHandler(debugOutput);
        .....
}

[axeljaeger]

You can also forward them to be shown in message boxes on the phone by adding QErrorMessage::qtHandler() to your main.cpp. Only do this if you use some qDebug-statements and not have qdebug in every second line of code because you will end up dissmissing a lot of popups.