[solved] Problem with console

[abich]

Hi i have a problem with my console
I cannot display it, i had only the first message "please choose an xml....." in the application output.
This is my code, And in my project.pro i had of course add QT += gui
@
#include<QApplication>
....
int main(int argc, char *argv[])
{
QApplication a(argc, argv);

MIRSpecLoad load;
MIRSystem system;

string fn;
QString sfn;
QFile f;

do
{
std::cout<<"please choose an xml file name"<<std::endl;
cin>>fn;
sfn=sfn.fromUtf8(fn.c_str(),-1);
QFile f(sfn);
if (!(f.exists())) {cout<<"The file does not exist"<<endl; }
}while (!(f.exists()));


  if (!load.openFile&#40;sfn&#41;)
  {
      std::cerr << "Failed to open the given file." << std::endl;
      return 0;
  }
  if(!load.parseSystem&#40;&system&#41;&#41;
  {
      std::cerr << "Unable to parse system." << std::endl;
      return 0;
  }

return a.exec();

}@

Please can any one help me??

[Xander84]

Hi, I don't think you can use std::cout or any other std console output in combination with the QApplication. As far as I know it will block the output until you exit the application and only after that you'll see the output from std::cout.

I looked at some Qt example apps and I think they are using this to print to the console:
@
std::fputs("test", stdout);
std::printf("test %d", 123);
@
i don't know if that makes any difference, but you could still use QDebug to print to the console, but that is only supposed for debug out usually :D