Unitech PA500 Manual de usuario descargar pdf (Pagina 26)

6.2.5. Check Trigger key is pressing

Function Description:

This function is used to check if left or right trigger key is pressed or not.

Function call:

BOOL TriggerKeyStatus( int key);

Parameter(Input)

key: int: LEFT_TRIGGER_KEY : left trigger key

RIGHT_TRIGGER_KEY : right trigger key.

Return code:

TRUE = trigger is pressed.

FALSE = trigger is released.

Example:

#define kKeybdTriggerEventName TEXT("KeybdTriggerChangeEvent")

#define kKeybdAlphaKeyEventName TEXT("KBDAlphaKeyChangeEvent")

#define LEFT_TRIGGER_KEY 1

#define RIGHT_TRIGGER_KEY 2

gKeyEvents[0] = CreateEvent(NULL, TRUE, FALSE, kKeybdTriggerEventName);

gKeyEvents[1] = CreateEvent(NULL, TRUE, FALSE, kKeybdAlphaKeyEventName);

while (1)

{

WaitForMultipleObjects(2, gKeyEvents, FALSE, INFINITE);

TriggerKeyStatus(LEFT_TRIGGER_KEY);

TriggerKeyStatus(RIGHT_TRIGGER_KEY);

}

6.3. LED related function

Function Description:

There are two LEDs above the screen of PA500, red and green LEDs. Only

the green LED can be controlled by programmer.

Function call:

void GoodReadLEDOn(BOOL fON)

Parameter(Input)

fON: BOOL: TRUE = turn on LED.

FALSE = turn off green LED.

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Unitech PA500 Manual de usuario Pagina 26