如何在Windows 10应用程序上共享文本？

Question

我正在通过Project Westminster构建Windows 10 Web App。我想创建一个按钮来调用本机共享功能，共享我的一些文本。我有以下代码。单击我的按钮将调用share（）函数。

function share() {
    Windows.ApplicationModel.DataTransfer.DataTransferManager.showShareUI();
}

function shareTextHandler(e) {
        var request = e.request;
        request.data.properties.title = "Share Text Example";
        request.data.properties.description = "Demonstrates how to share.";
        request.data.setText("Hello World!");
 }

app.onactivated = function (args) {
    if (args.detail.kind === activation.ActivationKind.launch) {
        if (args.detail.previousExecutionState !== activation.ApplicationExecutionState.terminated) {
            // This app is newly launched. Register the app as share source.
        var dataTransferManager = Windows.ApplicationModel.DataTransfer.DataTransferManager.getForCurrentView();
            dataTransferManager.addEventListener("datarequested", shareTextHandler);
        } else {
                // TODO: This app was reactivated from suspension.
                // Restore the app state here.
        }
        args.setPromise(WinJS.UI.processAll());
    }
 };

但是现在当我点击按钮时，它将共享我应用程序上捕获的屏幕，而不是我打算分享的文本。我该如何纠正这种行为？谢谢！