Using Magick++ to convert multiple images

[boveah]

I'm using a vector to store multiple images, but I can't quite figure out how to convert an entire folder of separate images.
In the command line you can just do "*.jpg" to convert them all but how to I read and store all those images.
Is there a simple way to do this without knowing all the image names in C++? Or do I need to know the image names first?