iPhone keyboard

Hello everyone,

I’m trying to create a simple iPhone application for launching the iPhone system keyboard.

I found these functions in the documentation but I guess I’m missing something because the keyboard doesn’t appear…
int SDL_iPhoneKeyboardShow(SDL_Window * window)
– reveals the onscreen keyboard. Returns 0 on success and -1 on error.
int SDL_iPhoneKeyboardHide(SDL_Window * window)
– hides the onscreen keyboard. Returns 0 on success and -1 on error.
SDL_bool SDL_iPhoneKeyboardIsShown(SDL_Window * window)
– returns whether or not the onscreen keyboard is currently visible.
int SDL_iPhoneKeyboardToggle(SDL_Window * window)
– toggles the visibility of the onscreen keyboard. Returns 0 on success and -1 on error.

Could anyone please show me a simple example?
I’ve tried the keyboard.app that comes with the SDL1.3 source code, i the Demos Xcode Project, but doesn’t work for me.

Thank you very much for your help,

Anna