Button identifier. Defaults to wxID_CONTEXT_HELP.
@param pos
Button position.
+ If ::wxDefaultPosition is specified then a default position is chosen.
@param size
- Button size. If wxDefaultSize is specified then the button is sized
- appropriately for the question mark bitmap.
+ Button size.
+ If ::wxDefaultSize is specified then the button is sized appropriately
+ for the question mark bitmap.
@param style
Window style.