Silverlight入门教程(16)

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Position(null).x; beginY = mouseEventArgs.getPosition(null).y; isMouseDown = true; //使当前控件获取鼠标焦点, 即使光标不在该元素上 sender.captureMouse(); } function onMouseMove(sender, mouseEventArgs) { if (isMouseDown == true) { var currX = mouseEventArgs.getPosition(null).x; var currY = mouseEventArgs.getPosition(null).y; sender["Canvas.Left"] += currX - beginX; sender["Canvas.Top"] += currY - beginY; beginX = currX; beginY = currY; } } function onMouseMove(sender, mouseEventArgs) { if (isMouseDown == true) { var currX = mouseEventArgs.getPosition(null).x; var currY = mouseEventArgs.getPosition(null).y; sender["Canvas.Left"] += currX - beginX; sender["Canvas.Top"] += currY - beginY; beginX = currX; beginY = currY; } } function onMouseUp(sender, mouseEventArgs) { isMouseDown = false; sender.releaseMouseCapture();
}
4. SilverLight 元素的键盘事件 I. 页面代码(Default.aspx)
II.Xaml 文件代码
<Canvas Name="parentCanvas" xmlns="/client/2007" xmlns:x="/winfx/2006/xaml" KeyDown="onKeyDown" > <TextBlock Name="helloBlock" Foreground="Black" Cursor="Hand" Text="King" /> </Canvas>
III.页面对应的 JS 文件代码(Default.aspx.js)
function createSilverlight() { Silverlight.createObjectEx({
source: "Page.xaml", parentElement: document.getElementById("SilverlightControlHost"), id: "SilverlightControl", properties: { width: "350", height: "350", version: "1.0", background: "white", isWindowless: "true", enableHtmlAccess: "true" }, events: {} }); } function onKeyDown(sender, keyEventArgs) { var msg; msg = " msg += " msg += " msg += " msg += " Press Shift = " + keyEventArgs.shift; Press Ctrl = " + keyEventArgs.ctrl; Key = " + keyEventArgs.key; PlatformKeyCode = " + keyEventArgs.PlatformKeyCode; The Platform is windows = " + (erAgent.indexOf("Windows") != -1);
alert(msg); }
5. 方法 createFromXaml 使用示例 I. 页面代码(Default.aspx)
II.Xaml 文件代码
<Canvas Name="parentCanvas" xmlns="/client/2007" xmlns:x="/winfx/2006/xaml" MouseLeftButtonDown="onMouseLeftButtonDown" Width="100" Height="100" Background="LightBlue" > </Canvas>
III.页面对应的 JS 文件代码(Default.aspx.js)
function createSilverlight() { Silverlight.createObjectEx({ source: "Page.xaml", parentElement: document.getElementById("SilverlightControlHost"), id: "SilverlightControl", properties: { width: "350", height: "350", version: "1.0", background: "white", isWindowless: "true", enableHtmlAccess: "true" }, events: {} }); } function onMouseLeftButtonDown(sender, eventArgs) { var plugin = sender.getHost(); var xamlFragment = '<TextBlock Canvas.Top="0" Text="I was created by createFromXaml method!" />'; textBlock = plugin.content.createFromXaml(xamlFragment); var xam
lFragment2 = '<Ellipse Canvas.ZIndex="1" Canvas.Left="95" Canvas.Top="95"
Height="200" Width="2