I'm using a COM Wrapper to interact with Windows Media Player.
The it is using an AxHost to somehow wrap the player, for me it's all just magic under the hood^^
The AxHost.AttachInterfaces looks like this
protected override void AttachInterfaces()
{
try
{
//Get the IOleObject for Windows Media Player.
IOleObject oleObject = this.GetOcx() as IOleObject;
//Set the Client Site for the WMP control.
oleObject.SetClientSite(this as IOleClientSite);
Player = this.GetOcx() as WMPLib.WindowsMediaPlayer;
...
Everything is working find as long as I host this AxHost in a Windows Forms control. But I can't hook up the events in a constructor.
This for example doesn't work:
public WMPMediaRating()
{
var remote = new WMPRemote.RemotedWindowsMediaPlayer();
_WMP = remote.Player;
_WMP.MediaChange += new _WMPOCXEvents_MediaChangeEventHandler(_WMP_MediaChange);
}
remote.Player is always null and the program crashes with a NullReferencesException.
The code in AttachInterfaces() is somehow only executed after the Form has been drawn, or after everything else is done.
I tried calling AttachInterfaces() by hand, but that didn't work either because GetOcx() returns nothing.
So how can I instantiate my AxHost-inherited control without Windows Forms, to use it for example in a console application?
FYI: nobody stops you from using a hidden window in your console application.
You'll not be able to host the media player in a non-windows application - it requires hosting. If you want to play some music you can use the Media Graphs to create a graph that renders (plays) your music file - it'll not require any extra hosting.
Related
I have an Ionic / Cordova application hosted in the Windows UWP application, and which I am looking into swapping to host within a WPF application (latest .net, eg 6.0), and using WebView2.
Note, the Ionic/Cordova part is not really relevant to this question, this is purely related to WPF.
When running on a Tablet (eg Microsoft surface), I need to resize the app when the soft keyboard is shown, and hidden.
When in UWP, I could hook into the following events in my TypeScript file...
let w = <any>window;
const inputPane = w.Windows.UI.ViewManagement.InputPane.getForCurrentView();
if (!inputPane) {
this.logger.error('WindowsKeyboardService.hookupKeyboardHandlers: could not get inputPane');
return;
}
inputPane.addEventListener('showing', _ => this.onWindowsKeyboardUp);
inputPane.addEventListener('hiding', _ => this.onWindowsKeyboardClose);
So I won't have the WinJS any longer in the WPF, so I will do all the native in the WPF and then call into the JS myself using the appropriate API on the webview.
If I was in UWP, I could do something like the following:
System.Windows.UI.ViewManagement.InputPane.GetForCurrentView().Showing += (s, args) =>
{
GeneralTransform gt = loginButton.TransformToVisual(this);
Point buttonPoint = gt.TransformPoint(new Point(0, loginButton.RenderSize.Height - 1));
var trans = new TranslateTransform { Y = -(buttonPoint.Y - args.OccludedRect.Top) };
loginButton.RenderTransform = trans;
args.EnsuredFocusedElementInView = true;
};
But in WPF, I do not seem to have the `System.Windows.UI namespace:
Is there an equivalent way of doing this within a WPF application?
Update 1
I found this sample code
The whole solution will build in .net framework (4.7), but not in .net 6, as still missing the namespace Windows.UI. Perhaps this is renamed to something?
Update 2
I create a new WinUI project. Calling
var pane = Windows.UI.ViewManagement.InputPane.GetForCurrentView();
gives the same Element Not found error. I call this in a button click event, to give the main app/Window plenty of time to be fully initialized.
Note I am trying this out running from Visual Studio (i.e. Desktop Windows 10), and not on an actual tablet at this stage.
I this similar post where there is a comment
#LeftTwixWand ApplicationView.GetForCurrentView and CoreApplication.GetCurrentView() are only for UWP apps. For WinUI 3 desktop apps, use the Window class for some of the functionality. I'm not completely sure but some of them also now a GetForWindowId method.
It mentions using the Window class, but there is nothing on how to do what I am after here (monitoring the soft keyboard show/hide events).
Update 3
Following #Victor below, I added the code and it asks me to install
#Victor is this correct?
For WPF you just need to use net6.0-windows10.0.17763.0 target framework or newer. APIs will be available for you via existing Interop classes. Do not use System.Runtime.InteropServices.WindowsRuntime, it is .net framework approach.
IntPtr handle = new WindowInteropHelper(window).Handle;
InputPane inputPane = InputPaneInterop.GetForWindow(handle);
Edit
I found out, that the requirements for showing a notification consist of setting a content-title, a context-text and a small icon. The last of which I do not do. Unfortunately, I don't know, how to provide a small icon especially in unity.
Original Question
I'm currently trying to show a notification from a unity-instance via android. I want to show the notification, when the user enters a specific gps-area. Thus, the script should run, when the app is paused. That's why I want to use the android-functionality.
With this code, I currently try to show the notification manually:
public void createNotification(){
NotificationManagerCompat nManager = NotificationManagerCompat.from(curContext);
NotificationCompat.Builder builder = new NotificationCompat.Builder(curContext, CHANNEL_ID)
.setContentTitle("Stuff")
.setContentText("MoreStuff")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
nManager.notify(1551, builder.build());
}
The context is stored in a static variable and is set, when calling the method.
The function is called in C# with:
PluginInstance.Call("createNotification");
The PluginInstance works, the function can be called, but I get the error:
AndroidJavaException: java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/core/app/NotificationManagerCompat
I found the solution for my problem: I used the Unity Android Jar-Resolver in which I provided the *Dependencies.xml (Where the * presents the Name of my project). In the *Dependenices.xml I specified: <androidPackage spec="androidx.appcompat:appcompat:1.1.0"> and run through the steps, provided in the Tutorial of the Resolver.
Afterwards, multiple dependencies appeared in my /Assets/Plugin/Android-Folder, which were successfully transferred to the app, when building it.
I have a windows form application written in C# that allows me to point to a folder of images and parse those images into a easily view able format for a user. This is a stand alone application and it works fine. I want to extend this application so that instead of it parsing a folder of images, I can hand it a prebuilt data set, with all of the images and meta data preset by an external application via an API.
I have been able to compile the application into a class library and access the classes and structs to actually build the data set without issue, the problem I am having now is launching the application externally with the data set I have built.
For context, I am writing a tool that will allow the user to call this windows form application from Spotfire. Inside of spotfire I am parsing a DataTable object and building the data set from the information I have. Once this data set is built I need to be able to launch the application as a stand-alone process instead of calling the forms explicitly inside of Spotfire. (This is due to a limitation of GUI threads in Spotfire and we can't call a multi threaded process in a single threaded application as well as we want to keep the Spotfire GUI responsive which can't be done if we call the forms directly)
I know I can launch the exe standalone using Process.Start(), however this doesn't let me pass my information to teh application. How can I build this application to allow me to pass information to it? I've been trying to google examples of how to do this and keep coming up empty handed as people will reference ASP.net or things that are over my head.
Thank you in advance!
EDIT: An example of an application that handles this really well is below. We use DPlot Jr to create graphs externally. The dplot.dll exposes the following function:
[System.Runtime.InteropServices.DllImport("dplotlib64.dll")]
public static extern int DPlot_Plot8(
ref DPLOT d, double[] x, double[] y, string cmds);
which I can then use in my code
docNum = dplot.DPlot_Plot8(ref dPlot, X, Y, cmds);
docNums.Add(docNum);
calling this function in this way actually launches the dplot application and passes the object I've built "dPlot" along with the X and Y data in order to plot the information. I would like to build something like this in my windows form application in order to be able to launch it easily from an external application. Unfortunately I don't know how this function works inside the .dll
EDIT2: I have been able to modify the runtime via the commandline as suggested by Aybe. In my desktop application I have created a conditonal in the main program like so.
if (args.Length == 0 && false)
{
Application.Run(new frmWaveFormViewer());
}
else
{
DataSet dataSet = new DataSet();
//dataSet.LoadMetaData(args[0]);
dataSet.LoadMetaData(#"C:\Users\a0273881\AppData\Local\Temp\tmp1141.tmp");
Application.Run(new frmWaveFormViewer(dataSet));
}
the user can then call the forms externally by using the following...
DataSet dataSet = new DataSet(dpList);
dataSet.PrintDatasetMetadataToFile(String.Format(#"C:\Spotfire\DataSetTesting_{0}.csv", DateTime.Now.ToString("yyyyMMdd_HHmmss")));
string args = dataSet.GetMetaData();
ProcessStartInfo starter = new ProcessStartInfo();
starter.FileName = #"C:\Users\a0273881\Desktop\WaveFormViewer.exe";
starter.Arguments = args;
Process.Start(starter);
However, this is not easy to use for other developers.
I am starting to look into WCF, can anyone provide good resources on WCF for dummies? I'm currently reading through: http://www.codemag.com/article/0705041
I have been able to spawn a NamedPipeServer on the application when it is launched. The named pipeserver names itself tagged with the name of the application + the process id that it spawns with. The process number is logged to a ini file in the users appdata folder. The process can be started with an optional command line argument to effect the value of the "callingApplication" which is the INI Header. This way, we can create multiple instances of the application from different callers without interfering and ensuring connection to the correct named pipe.
static void Main(string[] args)
{
string callingApplication = "None";
if (args.Length != 0)
{
callingApplication = args[0];
}
int pId = Process.GetCurrentProcess().Id;
PipeServer.StartPipeServer(pId, callingApplication);
// do things
PipeServer.StopPipeServer();
}
The PipeClient side is accessed through public functions available in a API static class. Functions that connect through the pipe are all housed in a seperate PipeClient class. These functions require a spawned process id in order to connect to the correct pipe. These are api functions to either launch or return the needed pipe from an api
public static class API
{
public static int SendCommand(int aKey, ...)
{
try
{
PipeClient.StartCommandSendClient(input, aKey);
}
catch (TimeoutException)
{
// returns error codes based on exceptions
}
return 0;
}
}
So with this I've managed to create a link between two applications. All that is really required past this is custom implementation of methods exposed through the API class which have custom client methods to call as well. All of this together is pretty simple to call from my calling app...
int aKey = API.GetKey("callingAppName");
API.SendCommand(aKey, "[Reset()][AddPoint(arg1, arg2, arg3)]");
I'm using a MediaPlayerLauncher to show movietrailers in my WP7 application, like this:
MediaPlayerLauncher mpl = new MediaPlayerLauncher();
mpl.Media = new Uri(trailerUrl, UriKind.Absolute);
mpl.Controls = MediaPlaybackControls.All;
mpl.Show();
This works just fine, except one thing: if the user is already listening to music in the background, and launch a trailer, the music is not resumed after the trailer is done playing (or if the user closes the video).
Does anyone know how i can resume the previously playing music/media, if even possible?
Local media playing through XNA or a 'background audio agent'?
When you play media in WP7 / WP8, the OS audio context is taken, and the original context is lost. If the audio was launched from an external application, then you cannot resume at all. If the previous media was launched from within your application, then you could store the meta-data and re-play once your trailer is finished. The media would, of course, then begin playing from the start, rather than where the user left off. Unfortunately XNA does not allow you to seek within a given piece of media; however you can seek within an 'audio agent' instance of 'BackgroundAudioPlayer' by setting player.Position. It's also worth looking at the MediaHistory API:
var nowPlaying = Microsoft.Devices.MediaHistory.Instance.NowPlaying;
Figured it out. Calling MediaPlayer.Resume() right after show() solves the issue:
mpl.Media = new Uri(trailerurl, UriKind.Absolute);
mpl.Controls = MediaPlaybackControls.All;
mpl.Show();
MediaPlayer.Resume();
However, i would still like to know how to resume radio and spotify!
What am I doing:
My main intent is to enable user friendly text to speech for personal use on Win 7. Approach should work in Google Chrome, VS and Eclipse.
Code example:
Following code creates global keyboard hook for ctrl + alt + space, called hookEvent. If event fires, it starts/stops speaking clipboard contents ( that can be updated with ctrl + c ).
/// <summary>
/// KeyboardHook from: http://www.liensberger.it/web/blog/?p=207
/// </summary>
private readonly KeyboardHook hook = new KeyboardHook();
private readonly SpeechSynthesizer speaker = //
new SpeechSynthesizer { Rate = 3, Volume = 100 };
private void doSpeaking(string text)
{
// starts / stops speaking, while not blocking UI
if (speaker.State != SynthesizerState.Speaking)
speaker.SpeakAsync(text);
else
speaker.SpeakAsyncCancelAll();
}
private void hookEvent(object sender, KeyPressedEventArgs e)
{
this.doSpeaking(Convert.ToString(Clipboard.GetText()));
}
public Form1()
{
InitializeComponent();
hook.KeyPressed += new EventHandler<KeyPressedEventArgs>(hookEvent);
hook.RegisterHotKey(ModifierKeysx.Control|ModifierKeysx.Alt, Keys.Space);
}
Question:
I would prefer not using the clipboard. Or at least, restoring the value after, something like:
[MethodImpl(MethodImplOptions.Synchronized)]
private string getSelectedTextHACK()
{
object restorePoint = Clipboard.GetData(DataFormats.UnicodeText);
SendKeys.SendWait("^c");
string result = Convert.ToString(Clipboard.GetText());
Clipboard.SetData(DataFormats.UnicodeText, restorePoint);
return result;
}
What are my options?
Edit:
To my surprise, I found that my clipboard reader is the best way to go. I created a notification area app, that responds to left click (speaking clipboard) and right click (menu opens up). In menu the user can chance speed, speak or create a audio file.
MS provide accessibility tools that do cover what you're trying to do. If you take a look at documents about screen scraping. In short, every component is accessible in some manner, if you use some of the windows debugging tools you can get to see the component names/structures within. You can then use that, however, its complicated as most times you would need to be very specific for each application you intend to scrape from.
If you manage to scrape you dont need to use the clipboard, as you can access the text property of the apps direct. Its not something I've had to do, hence, Ive no code to offer off the top of my head, but the term "screen scraping" should point you in the right direction.
If to expand a little on what Bugfinder said, Microsoft provider a UI Automation Framework to solve problems like the one you mentioned:
In particular you can use the TextSelectionChangedEvent of TextPattern:
The problem with this solution is that it only works on supported operating systems and applications - and not all support this.
Your clipboard solution is acceptable for applications that do not provide a good automation interface.
But for many applications the UI Automation Framework will work well and will provide you with a far better solution.