MULTITOUCH APP WINDOWS

These interfaces enable advanced support for touch input so that application developers can easily create natural user interfaces.

MULTITOUCH APP WINDOWS

In addition to gesture messages, specialized interfaces have been added to the Windows SDK. This is done because the information associated with the message can change in the future without breaking applications that already consume this message. Dedicated API functions encapsulate the details for creation and consumption of this message. Messaging support for gestures is enabled by a single new window message ( WM_GESTURE) that is sent or posted to appropriate application windows when user input is recognized as a gesture. In addition to the new touch input message, gesture messages have been added to the existing list of window messages. Windows Touch messages are generated by Windows and are delivered to windows that register for Windows Touch input. The new message, WM_TOUCH, reports the action (up, down, move), position, and an identifier for touch points. Functionality for this feature in WindowsВ 7 is provided by a new message that reports and tracks touches. This gives such applications the ability to detect and respond to multiple simultaneous touch points on the application's visible surface. New hardware and API elements in the WindowsВ 7 operating system provide applications the ability to receive input from multiple contacts. This topic gives a brief overview of Windows Touch.

Multitouch app