This function makes a frame visible.
- Makes a frame visible. Note that if a frame's parent is hidden, the frame displayed will not appear until its parent is shown as well.
- Performance note
- If a lot of frames are shown for the first time at once (like in action bar mods), then the interface may hang for a few seconds, I found no way to fix this.
- Protected function
- I found that Frames of type Button can't call this method if the player is in combat. ¿Any one else seen the same behaviour?