- Multi-touch: Specific WLanguage functions
A "multi-touch" feature is a technique allowing the user to interact with a device via several contact points (the fingers are used in most cases).
One of the most common applications of the multi-touch feature is used to handle images. The display size on a phone being reduced, it is often necessary to perform a zoom and/or to move in an image.
This technology allows you to zoom images with a pinch gesture.
WINDEV Mobile allows you to manage the multi-touch in the Android and iPhone/iPad applications via:
Multi-touch: Specific WLanguage functions
Several WLanguage functions can be used to manage the multi-touch in the following processes of controls:
- Pressed/Left button down (optional process)
- Released/Left button up (optional process)
- Double tap/Double click with left button (optional process)
- Move (optional process).
These functions are:
|GestureCurrentPointer||Returns the pointer index (finger or stylus) that triggered the call to a process specific to the multi-touch feature in an Image control.|
|GestureNbPointer||Returns the number of pointers in contact with the screen.|
|GesturePosX||Returns the horizontal position of the pointer (finger or stylus).|
|GesturePosY||Returns the vertical position of the pointer (finger or stylus).|
Cross-platform examples (WINDEV Mobile): WM System
This page is also available for…