ImageGear Professional > API Reference Guide > ART Component API Reference > ART Component Callback Functions Reference > LPFNIG_ART_SELECTNOTIFYFUNC |
This function is called by the library when the selection state of a mark is changed.
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typedef BOOL (ACCUAPI *LPFNIG_ART_SELECTNOTIFYFUNC)( HIGEAR hIGear, LPVOID lpPrivate, ART_MARK_INDEX hMarkIndex, BOOL fSelect ); |
Name | Type | Description |
hIGear | HIGEAR | HIGEAR handle of an image. |
lpPrivate | LPVOID | A far pointer to the private callback data. |
hMarkIndex | ART_MARK_INDEX | The index for the selected mark. |
fSelect | BOOL | A flag of type BOOL indicating the new selection state (selected/unselected). |
Returns FALSE for the mark's selection state to remain unchanged; returns TRUE to allow the mark's selection state to change.
All pixel formats supported by ImageGear Professional.
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BOOL ACCUAPI ARTSelectNotify( HIGEAR hIGear, LPVOID lpPrivate, ART_MARK_INDEX hMarkIndex, BOOL fSelect) { ART_MARK_ATTRIBUTES ma; ART_mark_query(hIGear, hMarkIndex, &ma); if (ma.dwType == ART_MARK_BUTTON && fSelect == TRUE) { /* prevent button marks from being selected */ return FALSE; } return TRUE; } |
If the callback function returns FALSE, the mark's selection state is not changed. It returns TRUE to allow the selection state to be changed.
In order to use this callback, it must be registered with ART using the function ART_callback_register(). |