• <ins id="pjuwb"></ins>
    <blockquote id="pjuwb"><pre id="pjuwb"></pre></blockquote>
    <noscript id="pjuwb"></noscript>
          <sup id="pjuwb"><pre id="pjuwb"></pre></sup>
            <dd id="pjuwb"></dd>
            <abbr id="pjuwb"></abbr>
            穩定盈利的期貨交易方法-量化趨勢交易

            alantop -專業量化投資者

            愛好:量化投資,逆向工程,滲透
            隨筆 - 595, 文章 - 0, 評論 - 921, 引用 - 0
            數據加載中……

            Demonstrates Downloading Data Asynchronously(用ATL異步下載數據的演示)

            程序代碼: http://www.shnenglu.com/Files/alantop/async.rar

            This sample creates a control that downloads data asynchronously from a URL. The control implements the IBindStatusCallback interface. Typically, you asynchronously download large binary objects or properties. This allows the control's user interface to remain unblocked during potentially lengthy network operations. The use of asynchronous downloading also gives the user a chance to abort the download. ATL uses WinInet functions internally to implement asynchronous downloading.

            這個例子建立了一個控件從一個URL里異步下載數據。這個控件實現了IBindStatusCallback接口。有代表性的,你異步下載大的數據和道具。這將保持在整個網絡長時間的網絡操作中,用戶的接口保持不被封鎖。異步下載可以給用戶提供中斷的機會。ATL用內建的WinInet函數實現異步下載。

            ASYNC creates a subclassed edit control with one property called URL. The URL property is a BSTR that represents a URL that points to data. The ASYNC sample uses the ATL CBindStatusCallback class to implement asynchronous downloading. When the control user sets the URL property, ASYNC creates a CBindStatusCallback object. The CBindStatusCallback::StartAsyncDownload method is then called and passed both the URL and a pointer to a callback function. This function, CAtlAsync::OnData, is called by the CBindStatusCallback object and is passed the binary data from the URL as it is received. CAtlAsync::OnData simply sends the received data to the subclassed edit control, where it is displayed.

            ASYNC建立一個子類化的edit控件,其有一個屬性關聯URL.URL屬性用BSTR代表。演示程序用CBindStatusCallback類實現異步下載。當控件用戶設置URL屬性,ASYNC建立一個CBindStatusCallback屬性。然后,CBindStatusCallback::StartAsyncDownload被調用,URL和一個指向回調函數的指針被傳遞給函數。CAtlAsync::OnDataCBindStatusCallback對象調用,并傳遞url接收到的二進制數據。CAtlAsync::OnData發送接收到的數據到被顯示的子類化控件中。

            Running the Sample

            Load the AtlAsync.htm file into your web browser. Type a URL into the edit control and press the Go button. This sets the ASYNC control's URL property to the URL you typed and starts the download. As data is downloaded, you will see it displayed in the ASYNC control.

            在瀏覽器中打開atlasync.htm文件。在edit控件鍵入網址,并選擇go.這將設置ASYNC控件的URL屬性并開始下載。當數據下載的時候,你可以看到它在async控件中顯示。

            For an example of how to subclass Windows controls using ATL, see the ATL SubEdit sample.

            怎樣用 ATL 子類化窗口控件,看 ATL subedit 例子。

            ?

            posted on 2006-05-30 23:42 AlanTop 閱讀(625) 評論(0)  編輯 收藏 引用 所屬分類: C++

            亚洲国产成人久久综合野外| 国内精品久久久久久久97牛牛| 99久久精品国产一区二区蜜芽| Xx性欧美肥妇精品久久久久久| 久久亚洲电影| 久久婷婷国产综合精品| 久久不射电影网| 2021国内久久精品| 99久久99这里只有免费的精品| 久久久久久国产a免费观看不卡| 久久久久免费精品国产| 久久亚洲国产欧洲精品一| 久久福利资源国产精品999| 久久99精品综合国产首页| 久久精品国产亚洲AV久| 久久精品免费大片国产大片| 97久久精品无码一区二区| 久久午夜福利无码1000合集| 中文字幕一区二区三区久久网站 | …久久精品99久久香蕉国产| 国产69精品久久久久99| 乱亲女H秽乱长久久久| 欧美亚洲另类久久综合婷婷| 国产精品久久永久免费| 无码专区久久综合久中文字幕| 欧美久久亚洲精品| 久久青青草原精品国产不卡| 国产成人精品久久免费动漫| 久久精品国产免费观看| 精品久久久久久久国产潘金莲| 日韩精品无码久久一区二区三| 狠狠综合久久综合中文88| 久久亚洲精品视频| 精品久久香蕉国产线看观看亚洲| 少妇高潮惨叫久久久久久| 久久精品国产99久久久古代| 久久只这里是精品66| 欧美国产成人久久精品| 狠狠综合久久综合88亚洲| 尹人香蕉久久99天天拍| 日批日出水久久亚洲精品tv|