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AVEVA™ Operations Management Interface

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Runtime touch interaction limitations

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  • Last UpdatedJul 17, 2024
  • 2 minute read

Some touch limitations are apparent during runtime.

  • A double tap gesture to select text in an Edit Box is difficult to achieve.

  • Using mouse and touch simultaneously is not supported. Either interaction type may cancel the other, but no serious errors occur that prevents the ViewApp from continuing to run.

  • Touch gestures are not supported when an app has been placed in a multi-content layout pane and hierarchy or content navigation is enabled.

  • Pan and zoom gestures are not supported by apps.

  • Content Tooltip animations do not appear when using touch because there is no concept of hovering directly over a screen item with touch.

  • A layout supports only one long press or double tap gesture at a time. You cannot perform a double tap or long press simultaneously on a layout.

    Note: A layout can support multiple simultaneous touch down or touch up gestures.

  • Multi-touch gestures do not work on WCC controls.

  • WinForm controls have severe touch limitations:

    • A WinForm does not respond to a Touch Lock interaction. When Touch Lock is used with WinForm controls, touch gestures become inoperable.

    • Pan and Zoom gestures do not work on layout panes if a pane contains a WinForm control.

    • Hierarchy Navigation does not work on layout panes if a pane contains a WinForm control.

    • A scrunch gesture does not work if a finger touches any WinForm control.

    • Three finger gestures do not work when one of the fingers touches a WinForm control

  • WPF control specific limitations

    • Touch Lock cannot be used to control message box dialogs thrown from a WPF application such as those created from System.The user's finger must be removed from the Touch Lock when working in Command Lock or Two Handed Operation mode to interact with these dialogs.

    • WPF touch events are not supported. Any touch interaction with a user control will be promoted to equivalent mouse events. To support touch, the control must implement the ISupportTouch interface. Refer to AVEVA OMI SDK documentation for details.

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