RegisterOutputCallbackInteractionContext function (interactioncontext.h)
Registers a callback to receive interaction events from an Interaction Context object.
Note
See RegisterOutputCallbackInteractionContext2 function for enhanced gesture recognition support.
Syntax
HRESULT RegisterOutputCallbackInteractionContext(
[in] HINTERACTIONCONTEXT interactionContext,
[in] INTERACTION_CONTEXT_OUTPUT_CALLBACK outputCallback,
[in, optional] void *clientData
);
Parameters
[in] interactionContext
Handle to the Interaction Context.
[in] outputCallback
The INTERACTION_CONTEXT_OUTPUT_CALLBACK callback function.
[in, optional] clientData
A pointer to an object that contains information about the client. The value typically points to the object for which the member function is called (this).
Return value
If this function succeeds, it returns S_OK.
Otherwise, it returns an HRESULT error code.
Remarks
Each instance of an Interaction Context is limited to one output callback. Registering a callback function overwrites any existing callback registration for the Interaction Context.
This function is typically called after the creation of an Interaction Context or when the Interaction Context is reassigned to another UI element.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 [desktop apps only] |
| Minimum supported server | None supported |
| Target Platform | Windows |
| Header | interactioncontext.h |
| Library | Ninput.lib |
| DLL | Ninput.dll |
See also
INTERACTION_CONTEXT_OUTPUT structure
INTERACTION_CONTEXT_OUTPUT2 structure