What definitions do I need to add a vertical slider? I've looked through a couple of missions and tried to add a few listed
here. but I can't seem to get it right.
I solved it. My w and h were reversed giving me a funny looking slider.
For the record these are the values for the definitions .
// Slider styles
#define SL_DIR 0x400
#define SL_VERT 0
#define SL_HORZ 0x400