Joystick Functions working?

SDL Development
1

Hi all, I have lot of problems with all joystick functions, this is a small code I use to make tests

Code:
int main(int argc, char* argv[])
{
if ( SDL_InitSubSystem ( SDL_INIT_VIDEO | SDL_INIT_JOYSTICK ) < 0 )
{
fprintf ( stderr, “Unable to initialize Joystick: %s\n”, SDL_GetError() );
return -1;
}

printf ( "%i joysticks found\n", SDL_NumJoysticks () );

// TODO add check
SDL_Joystick* joy1 = SDL_JoystickOpen ( 0 );

if ( joy1 == NULL )
	printf ( "could not open joystick\n" );

printf ( "%s nom\n", SDL_JoystickName( 0 ) );
printf ( "%i axes\n", SDL_JoystickNumAxes ( joy1 ) );
printf ( "%i trackball\n", SDL_JoystickNumBalls ( joy1 ) );
printf ( "%i heads\n", SDL_JoystickNumHats ( joy1 ) );
printf ( "%i booton\n", SDL_JoystickNumButtons ( joy1 ) );

SDL_JoystickEventState (SDL_ENABLE);
// this will alter the behaviour of the event queue of the sdl system
//SDL_JoystickEventState ( SDL_QUERY );
SDL_Event event;

Ans here 2 codes to make test

Code:
while ( 1 ) {
SDL_JoystickEventState (SDL_ENABLE);
SDL_JoystickUpdate();
while(SDL_PollEvent(&event))
{
switch(event.type) {
case SDL_JOYBUTTONUP:
printf(“Oh! Key press\n”);
break;

				case SDL_JOYBUTTONDOWN:
				  printf("Oh! Key up\n");
				  break;


				default:
				  printf("I don't know what this event is!\n");
			}
	    }
		Sleep(100);
}

and

Code:
while ( 1 )
{
// This is needed in the even queue
SDL_JoystickUpdate ();

	// now we query for some input
	for ( int i=0; i < SDL_JoystickNumButtons ( joy1 ); ++i )
	{
		unsigned int n = SDL_JoystickGetButton ( joy1, i );
		if ( n != 0 )
			printf ( "found you pressed button %i\n", i );
	}

	for ( int i=0; i < SDL_JoystickNumAxes ( joy1 ); ++i )
	{
		signed short a = SDL_JoystickGetAxis ( joy1, i );
		if (( a > 10 ) || (a < -10))
		{
			printf ( "axis %i is %d\n", i,a );
		}
	}
}

The fisrt one detect only SDL_JOYBUTTONUP and never SDL_JOYBUTTONDOWN.
The second never detect button with sdl 2.0 but work with sdl 1.2 (axes are working with both sdl).

Im using VC2010 on Windows, someone tell me the first is working on linux, but I can’t try it.

There is someone who are using joystick with sdl on Windows, and how ???

2

For information, I have find how to make this function working.
Just add
SDL_SetHint(“SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS”, “1”);

Even if the application have the focus only SDL_JOYBUTTONUP work never SDL_JOYBUTTONDOWN.
And for the second part it s still a mystery.

3

An one more bug, it s fantastic, and like usual lot of people have the same problem on forum, but still no answer.

m_stick->SetCapture(this, 10);
bool b = m_stick->ReleaseCapture();
bool b2 = m_stick->SetCapture(this, 10);

Not work, b is true but not b2, SDL_GetError return nothing.