Mouse wheel up/down issue

SDL Development
1

Hello all,

I’m having some trouble reading mouse wheel up/down inputs…
I was wondering if there’s a known issue, or if I’m doing something wrong…

Here’s how I test for it:

int *x;
int *y;
Uint8 state = SDL_GetMouseState(x, y);

bool wheelUp = state & SDL_BUTTON(SDL_BUTTON_WHEELUP);

It turns out, wheelUp is always false…
(This is on FC5 in case it’s of any relevance).

Any ideas? Does anything look wrong with the code above?

Cheers,
K.

2

Hello Kostas,

Monday, May 15, 2006, 9:49:49 AM, you wrote:

KK> Hello all,

KK> I’m having some trouble reading mouse wheel up/down inputs…
KK> I was wondering if there’s a known issue, or if I’m doing something wrong…

KK> Here’s how I test for it:

KK> int *x;
KK> int *y;
KK> Uint8 state = SDL_GetMouseState(x, y);

KK> bool wheelUp = state & SDL_BUTTON(SDL_BUTTON_WHEELUP);

KK> It turns out, wheelUp is always false…
KK> (This is on FC5 in case it’s of any relevance).

KK> Any ideas? Does anything look wrong with the code above?

You cant guarantee that you’ll catch the wheel-up event as it’s
momentary. Really, you need to do this with the event system.–
Best regards,
Peter mailto:@Peter_Mulholland

3

Kostas Kostiadis wrote:

Hello all,

I’m having some trouble reading mouse wheel up/down inputs…
I was wondering if there’s a known issue, or if I’m doing something wrong…

Here’s how I test for it:

int *x;
int *y;
Uint8 state = SDL_GetMouseState(x, y);

bool wheelUp = state & SDL_BUTTON(SDL_BUTTON_WHEELUP);

From your code fragment it’s not clear. I think you should test
this from inside an event handler (SDL_MouseButtonEvent).

 .bill