/*--------------------------------------------------------------------------
* Function: DispatchLoopNT()
*
* Description:
* This function contains the main message loop which constantly checks for
* SpaceBall Events and handles them apropriately.
*
* Args: None
*
*
* Return Value:
* int msg.wparam // event passed to window
*
*--------------------------------------------------------------------------*/
int
DispatchLoopNT()
{
int num; /* number of button pressed */
MSG msg; /* incoming message to be evaluated */
BOOL handled; /* is message handled yet */
SiSpwEvent Event; /* SpaceWare Event */
SiGetEventData EData; /* SpaceWare Event Data */
handled = SPW_FALSE; /* init handled */
/* start message loop */
while ( GetMessage( &msg, NULL, 0, 0 ) )
{
handled = SPW_FALSE;
/* init Window platform specific data for a call to SiGetEvent */
SiGetEventWinInit(&EData, msg.message, msg.wParam, msg.lParam);
/* check whether msg was a Spaceball event and process it */
if (SiGetEvent (devHdl, 0, &EData, &Event) == SI_IS_EVENT)
{
if (Event.type == SI_MOTION_EVENT)
{
SbMotionEvent(&Event); /* process Spaceball motion event */
}
if (Event.type == SI_ZERO_EVENT)
{
SbZeroEvent(); /* process Spaceball zero event */
}
if (Event.type == SI_BUTTON_EVENT)
{
if ((num = SiButtonPressed (&Event)) != SI_NO_BUTTON)
{
SbButtonPressEvent(num); /* process Spaceball button event */
}
if ((num = SiButtonReleased (&Event)) != SI_NO_BUTTON)
{
SbButtonReleaseEvent(num); /* process Spaceball button event */
}
}
handled = SPW_TRUE; /* spaceball event handled */
}
/* not a Spaceball event, let windows handle it */
if (handled == SPW_FALSE)
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
}
return( msg.wParam );
}
int
SbButtonEvent(SiOpenData *pOData, SiGetEventData *pEData,
SiSpwEvent *pEvent, void *pUData)
{
int button;
if ((button = SiButtonReleased (pEvent)) != SI_NO_BUTTON)
SbButtonReleaseEvent(button, pUData);
if ((button = SiButtonPressed (pEvent)) != SI_NO_BUTTON)
SbButtonPressEvent(button, pUData);
return (0);
}
