ILayout.startLayout method

This API is no longer supported. Starting with the Windows Library for JavaScript 2.0 Preview, use the ILayout2 interface. Begins a layout pass.

Syntax

iLayout.startLayout(beginScrollPosition, endScrollPosition, count).done( /* Your success and error handlers */ );

Parameters

• beginScrollPosition
  Type: Integer

  The starting pixel of the area to which the items are rendered.

• endScrollPosition
  Type: Integer

  The last pixel of the area to which the items are rendered.

• count
  Type: Integer

  The upper bound of the number of items to render.

Return value

Type: Promise**

A Promise that returns an object that has these properties:

• beginIndex: The data source index of the first item to be realized/rendered.
• endIndex: The data source index of the last item to be realized/rendered + 1.

Remarks

The ListView uses this method to determine, given the current size of the viewport, which items it should show.

Requirements

See also

ILayout