[SDL] Double Click

[Peter Ketting]

>          Do you know if there is an easy way to detect double click,
> instead of just down or up?

Check events, etc...

if (event == MOUSE_BUTTONDOWN)
{
    if (IsDoubleClick == TRUE)
    {
        ...
        /* Double click detected. */
    }
}

Check Double Click;

BOOL IsDoubleClick (void)
{
    static ULONG LastClickTicks;
             ULONG CurrentClickTicks;

    /* First time this function is called, LastClickTicks
        has not been initialised yet. */

    if (! LastClickTicks)
    {
        LastClickTicks = SDL_GetTicks ();
        return (FALSE);
    }

    else
    {
        CurrentClickTicks = SDL_GetTicks ();

        /* If the period between the two clicks is smaller
            or equal to a pre-defined number, we report a
            DoubleClick event. */

        if (CurrentClickTicks - LastClickTicks <= MAX_TICKS)
        {
            /* Update LastClickTicks and signal a DoubleClick. */

            LastClickTicks = CurrentClickTicks;
            return (TRUE);
        }

        /* Update LastClickTicks and signal a SingleClick. */

        LastClickTicks - CurrentClickTicks;
        return (FALSE);
    }
}

Not tested, but this is how I would do it.

Cheers,
Peter