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Add data to the widget data chain
int PtAddWidgetData( PtWidget_t *widget,
PtWidgetClassRef_t *type,
long subtype,
void *data );
- widget
- A pointer to the widget whose chain the data should be added to.
- type
- The class of the widget adding the data.
- subtype
- A subtype that's used to discriminate between multiple blocks
of data added by the same widget class.
The subtype shouldn't be -1, as this value has special meaning
when searching for a specific block within the widget data chain.
- data
- A pointer to the data to be added to the widget data chain.
This function adds a piece of data to the widget data chain.
The data provided must be in a block of memory allocated by
malloc()
(see the QNX Neutrino Library Reference).
You can retrieve this data by calling
PtFindWidgetData()
or
PtFindNextWidgetData().
0 on success; -1 if an error occurred (e.g. out of memory).
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PtFindWidgetData(),
PtFindNextWidgetData(),
PtRemoveWidgetData()
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