Flex4中垂直渐变填充矩形

			var g:Graphics = this.graphics;
			
			g.clear();
			g.lineStyle(1,0x000000);
			g.drawRect( 0,unscaledWidth-1,unscaledHeight-1 );
			
			var fillType:String = GradientType.LINEAR;
			var colors:Array = [0x717171,0xC0C0C0,0x717171];
			var alphas:Array = [1,1,1];
			var ratios:Array = [0x32,0x89,0xFF];
			var matr:Matrix = new Matrix();
			
			matr.createGradientBox(unscaledWidth-3,unscaledHeight-3,Math.PI / 2,0);
			
			var spreadMethod:String = SpreadMethod.PAD;
			this.graphics.beginGradientFill(fillType,colors,alphas,ratios,matr,spreadMethod);  
			g.drawRect( 1,unscaledWidth-3,unscaledHeight-3 );
			g.endFill();

渐变效果: