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  • Managing several pointers
  • Limitations
  • Various
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Stored procedures
GestureNbPointer (Function)
In french: GesteNbPointeur
Returns the number of pointers in contact with the screen.
The returned value depends on how the function is used:
  • Used in an event linked to the movement of the pointer (click, move, pressed, released, etc.), returns the number of pointers (finger or stylus) currently in contact with the screen
  • Used in another event or process, returns the last known number of contact points.
Versions 18 and later
iPhone/iPad This function is now available for iPhone/iPad applications.
New in version 18
iPhone/iPad This function is now available for iPhone/iPad applications.
iPhone/iPad This function is now available for iPhone/iPad applications.
Example
// -- Code de clic sur un champ Image
nbPointsContact is int
nbPointsContact = GestureNbPointer()
 
ToastDisplay("Vous utilisez actuellement " + nbPointsContact + " doigt(s) sur l'écran")
Syntax
<Result> = GestureNbPointer()
<Result>: Integer
Number of pointers (fingers or styluses) that touch the screen.
Android Remark: In the Android simulator or emulator, this number is always equal to 1.
Remarks
Android

Managing several pointers

To manage several pointers on the screen, the device must be equipped with a multi-touch display.
Caution: On some devices, GestureNbPointer can return a values less than the number of pointers actually in contact with the screen. Indeed, the number of simultaneous contact points supported by the system is limited (this limit changes according to the device).

Limitations

  • Android This function is only available on devices with Android version 2.2 or higher (API level 8).
    A fatal error occurs if the function is used with an earlier system version.
    To determine the version of Android the application is running on, use SysAndroidVersion.
  • iPhone/iPad Up to 2 pointers can be supported.

Various

  • To find out the vertical position (Y) of a pointer, use GesturePosY.
  • To find out the horizontal position (X) of a pointer, use GesturePosX.
  • To get the pointer index that triggered the execution of an event linked to a movement on the screen, use GestureCurrentPointer.
Component: WDJS.DLL
Minimum version required
  • Version 17
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