Vertical bar in arguments

In many OpenGL functions, it allows you to specify multiple options for a single parameter. How would I go about doing this in regular C++?


QGLFormat(QGL::SampleBuffer | QGL::DepthBuffer)
Exactly the same way. That's standard C++. It's the bitwise OR operator.

QGL::SampleBuffer will have a single bit set to one, and all the rest zero. Likewise QGL::DepthBuffer. When you bitwise OR them, you get a new number with both those bits set to one, and all the rest zero. Each bit represents something being turned on or off.
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