I want run one application with GUI or Console based on commandline

[pencilren]

if "Config += console" is added in the ".pro" file, the GUI application will show a console in background, how I remove this console window?
or how can I start a console in code without using "Config += console".

My Sample code is as following.

main(int argc, char *argv[])
{
    if(argc<=1)
      runGUI();
    else
      runConsole();
}

main(int argc, char *argv[])
{
    if(argc<=1)
      runGUI();
    else
      runConsole();
}

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any suggestion?