Mouse event handling (Carbon)

External Since: Sep 16, 2006 Posts: 11

I am trying to catch mouse events in a control. I can catch control
events but no mouse events. Attached is a simple sample:

// a list of all catchable events:
static EventTypeSpec const eventList[] =
{
{kEventClassControl, kEventControlDraw},
{kEventClassControl, kEventControlHit},
};

static EventTypeSpec const mouseEventList[] =
{
{kEventClassMouse, kEventMouseDown}
};

static pascal OSStatus EventHandler(EventHandlerCallRef handler,
EventRef EventReference, void* Data);
static pascal OSStatus MouseEventHandler(EventHandlerCallRef handler,
EventRef EventReference, void* Data);

DEFINE_ONE_SHOT_HANDLER_GETTER(EventHandler)
DEFINE_ONE_SHOT_HANDLER_GETTER(MouseEventHandler)

During control initialization I install the handlers:

InstallControlEventHandler(MouseControlRef,GetMouseEventHandlerUPP(),GetE
ventTypeCount(mouseEventList),mouseEventList,NULL,NULL);

InstallControlEventHandler(ControlRef,GetEventHandlerUPP(),GetEventTypeCo
unt(eventList),eventList,NULL,NULL);

By doing so I get all control events but no mouse event. What do I have
to do to get the mouse events?

Hartwig

External Since: Jun 20, 2005 Posts: 30

In article , H wrote:

> I am trying to catch mouse events in a control.

Use kEventClassControl, kEventControlClick. kEventClassMouse events are not sent
to the control because the window receives the mouse event, traverses the
control hierarchy, finds the control affected by the click, and sends it a
kEventControlClick event.

hth

Ben

--
If this message helped you, consider buying an item
from my wish list: <http://artins.org/ben/wishlist>