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Gesture Messages (Compact 2013)

3/28/2014

When the user touches the screen, the touch screen driver recognizes a touch event and passes an array of touch points to the gesture engine. The gesture engine then passes the aray of touch points to each registered gesture recognizer. When a recognizer identifies a gesture, it adds the gesture event into the same message queue that receives the touch events.

The gesture engine always delivers gesture events before any final finger-up event so that the window procedure can process the gesture by calling the GetGestureInfo function and by canceling any action planned for the finger-up touch event.

The following table shows the messages that support direct manipulation and gestures.

WM_GESTURE

The gesture engine sends this message to a window when a touch gesture occurs or is in progress.

WM_GESTUREANIMATIONSTATUS

This message is sent to the window procedure of the affected control when a window is about to start or end an animation in response to a particular touch gesture.

Header

winuser.h

sysgen

SYSGEN_TOUCHGESTURE

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