PtBalloonCallback_t

Balloon callback structure

Synopsis:

typedef struct Pt_balloon_callback {
    PtWidget_t *widget;
    void (*event_f)( PtWidget_t *wgt, 
                     void *data, 
                     PtCallbackInfo_t *cbinfo);
    } PtBalloonCallback_t;

Description:

The PtBalloonCallback_t structure lets you attach a balloon callback to a widget's container. The container invokes the specified function whenever a balloon action is warranted.

This structure contains at least the following members:

widget

Pointer to the widget the callback is being attached to.

event_f

Pointer to an inflate/deflate function that's called whenever a balloon action is required for widget. The arguments passed to this function are:

wgt

Pointer to the widget whose balloon is being affected.

data

A value of NULL.

cbinfo

In the cbinfo structure, the reason member is Pt_CB_BALLOONS, and the reason_subtype member is one of the following:

• Pt_INFLATE_BALLOON-the balloon should be made visible
• Pt_POP_BALLOON-the balloon should be removed.

Classification:

Photon

See also:

PtCallbackInfo_t, PtContainer