我的环境是Windows 10 64位上的Visual Studio 2013。
在我的Windows Store App(Windows8.1)中,我像这样附加了键盘事件(这是一个c++/cx程序,因为我使用的是C++工具包):
auto amv = Windows::ApplicationModel::Core::CoreApplication::MainView;
if (amv){
auto cw = amv->CoreWindow;
if (cw){
cw->KeyDown += ref new TypedEventHandler<C
我有一张桌子:
Month_Year MV MI
----------------------------------------------------------
August 2016 3 100
October 2016 2 150
September 2016 1 100
January 2017 4
我找到了,然后我意识到C#代码不起作用,我不知道如何实现这个代码:
amvMenu.setOnMenuItemClickListener(new ActionMenuView.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem menuItem) {
return onOptionsItemSelected(menuItem);
}
});
它会导致错误:
Cannot create an instance of the abstract class or interfa
我需要把视频解码成帧。我可以在mime类型的视频中这样做,但是它不适用于
for (int i = 0; i < extractor.getTrackCount(); i++) {
MediaFormat format = extractor.getTrackFormat(i);
String mime = format.getString(MediaFormat.KEY_MIME);
System.out.println(mime);
if (mime.sta
如何缩短以下select语句?
create or replace view V_AMV_PLG_QUOTES_50_MS as
select
sum(NVL(ASK_SIZE,0)) as ASK_VOLUME,
CASE WHEN
sum(CASE WHEN NVL(ASK_SIZE,0)=0 THEN CASE WHEN BASE_CURR_ASK_PRICE=0 THEN 0 ELSE 1 END ELSE ASK_SIZE END)=0 THEN 1
ELSE sum(CASE WHEN NVL(ASK_SIZE,0)=0 TH
嗨,我想在我的应用程序上播放远程视频。网址为:
我使用的AVKit与此代码,但屏幕和音频不工作。我只看到前进的进度条。
let player = AVPlayer(url: url)
// Create a new AVPlayerViewController and pass it a reference to the player.
let controller = AVPlayerViewController()
controller.player = player
controller.player?.