Qt -“\n”不起作用，但是std::endl起作用吗?

I have a rather strange problem that I've never encountered before and I have no idea what is causing it. I'm working in Qt 4.7, and I have a lot of things in my project that print to the terminal. These prints are all triggered by one button press. However, when I press the button, they don't all print. Instead, all the print statements that end with I have a rather strange problem that I've never