Pass data from C++ to QML on the run time

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  Wanqi

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  < mx: Model id = source = "example3.xml" / "xmldata" >
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  < TABLE >
  example < 1 >
  < Difficulty > 0,5 < / difficulty >
  < discrimination > 0.7 < / discrimination >
  < item 3 > < / point >
  < / example1 >
  < /table >

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  <? XML version = "1.0" encoding = "utf-8"? >
  " < = xmlns:mx mx:Label ' http://www.Adobe.com/2006/MXML ">
  
  <!--
  This element converter simply extends label and overrides the updateDisplayList function
  draw a filled rectangle of gradient. The colors of the gradient are determined from the
  data.
  ->
  < mx:Script >
  <! [CDATA]
  
  to import flash.geom.Matrix;
  import flash.display.GradientType;
  import flash.display.Graphics;
  
  override the updateDisplayList(unscaledWidth:Number,_unscaledHeight:Number):void function
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  super.updateDisplayList (unscaledWidth, unscaledHeight);
  
  var m:Matrix new matrix());
  m.createGradientBox (unscaledWidth, unscaledHeight);
  
  var Graphics = g:Graphics;
  trace("Data.COL3="+Data.col3)
  var colors: Array = (data.col3 < 2000? ([0x0000CC, 0x0000FF]: [0x00CC00, 0x00FF00]);
  
  g.Clear ();
  g.beginGradientFill (GradientType.LINEAR, colors, [0.2,0.6], [0,255], m);
  
  the rectangle is drawn a little high and a bit large to compensate for the gap
  the DataGrid control is introduced between the rows.
  g.drawRect (0, -2, unscaledWidth, unscaledHeight + 4);
  g.endFill ();
  }
  []] >
  < / mx:Script >
  < / mx:Label >

  This code example should answer your question of how to import data in the renderer automatically. It is through the dataProvider of the DataGrid and then refer to it in the renderer in the form of data. XYZ, where XYZ is the field in the XML file with the data. See FB 3 help sys on the e4x syntax.

  -mainapp.mxml-

  -MyLabel.mxml-

  -data2.xml-

  
  
         0.5 
         0.7 
         3