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The topics in this section provide the reference specifications for Touch Hit Testing functions.
In this section
| Topic | Description |
|---|---|
| EvaluateProximityToPolygon |
Returns the score of a polygon as the probable touch target (compared to all other polygons that intersect the touch contact area) and an adjusted touch point within the polygon. |
| EvaluateProximityToRect |
Returns the score of a rectangle as the probable touch target, compared to all other rectangles that intersect the touch contact area, and an adjusted touch point within the rectangle. |
| PackTouchHitTestingProximityEvaluation |
Returns the proximity evaluation score and the adjusted touch-point coordinates as a packed value for the WM_TOUCHHITTESTING callback. |
| RegisterTouchHitTestingWindow |
Registers a window to process the WM_TOUCHHITTESTING notification |