Console output in a Qt GUI app?

Question

I have a Qt GUI application running on Windows that allows command-line options to be passed and under some circumstances I want to output a message to the console and then

Answer 1

Something you may want to investigate, at least for windows, is the AllocConsole() function in the windows api. It calls GetStdHandle a few times to redirect stdout, stderr, etc. (A quick test shows this doesn't entirely do what we want it to do. You do get a console window opened alongside your other Qt stuff, but you can't output to it. Presumably, because the console window is open, there is some way to access it, get a handle to it, or access and manipulate it somehow. Here's the MSDN documentation for those interested in figuring this out:

AllocConsole(): http://msdn.microsoft.com/en-us/library/windows/desktop/ms681944%28v=vs.85%29.aspx

GetStdHandle(...): http://msdn.microsoft.com/en-us/library/windows/desktop/ms683231%28v=vs.85%29.aspx

(I'd add this as a comment, but the rules prevent me from doing so...)