PackTouchHitTestingProximityEvaluation function (winuser.h)

Article
02/22/2024

Returns the proximity evaluation score and the adjusted touch-point coordinates as a packed value for the WM_TOUCHHITTESTING callback.

Syntax

LRESULT PackTouchHitTestingProximityEvaluation(
  [in] const TOUCH_HIT_TESTING_INPUT                *pHitTestingInput,
  [in] const TOUCH_HIT_TESTING_PROXIMITY_EVALUATION *pProximityEval
);

Parameters

[in] pHitTestingInput

The TOUCH_HIT_TESTING_INPUT structure that holds the data for the touch contact area.

[in] pProximityEval

The TOUCH_HIT_TESTING_PROXIMITY_EVALUATION structure that holds the score and adjusted touch-point data that the EvaluateProximityToPolygon or EvaluateProximityToRect function returns.

Return value

If this function succeeds, it returns the score and adjustedPoint values from TOUCH_HIT_TESTING_PROXIMITY_EVALUATION as an LRESULT. To retrieve extended error information, call the GetLastError function.

Remarks

Usually, this is the last function that's called in a WM_TOUCHHITTESTING handler.

Requirements

Requirement	Value
Minimum supported client	Windows 8 [desktop apps only]
Minimum supported server	None supported
Target Platform	Windows
Header	winuser.h
Library	User32.lib
DLL	User32.dll