communication

问题 We are developing an application which prints RFID labels using Zebra RZ400 RFID printer. Until now, we were sending ZPL commands by RawPrinterHelper class which makes call to winspool.drv. However, we soon realized that not all tags are printed successfully so we looked for a way to get feedback about the success of the last print operation. There is a command "^RV" that is said to return a string upon a print operation that reflects operation success result. Now, the problem is we don't

问题 I'm looking for complete example of how to transfer collections between 2 machines by using protobuf-net serialization and sockets connection. All I succeed to find is separate parts of code and no one of them can't explain to the noob like me how to combine all this stuff. Following the .proto file: using System; using ProtoBuf; namespace Proto.Transaction { [Serializable] [ProtoContract] public class Transaction { [ProtoMember(1)] public int Type { get; set; } [ProtoMember(2)] public int

问题 I'm trying to call a function from a AS3 container which should call old AS2 SWF that cannot be edited bacause we are talking about 1000 swf files, does exist some way to call a function inside the AS2 SWF from the AS3 container ? I know a possible way by adding a LocalConnection as written here but as I said I can't edit all the swf files, so I just wonder to know if does exist some alternative. 回答1: If your container absolutely has to be written in AS3, then you could create another

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 4 years ago . I'm a one man developer PHP/MySQL developer. The contents of our database come an excel file produced by a group on non programmers. They are smart people, but often don't see how small changes in excel file can totally make the logic in my PHP codes meaningless. Does anyone

问题 Communication between two custom (angular) elements Let's say there are two custom elements. - login-button `<login-button id="loginbutton"></login-button>;` - and status-login `<status-login></status-login>` When the login button is pressed element login-button will emit the output event loginbuttonpressed . Angular elements will transform this output event to a custom-event. Then in the status-login you can then do like: constructor( @Inject(DOCUMENT) document) { document.getElementById(

问题 I have a widget that shows various images with text below, and the same UI set up in the app itself. I want the widget to not only be able to open the app, but to open the app based on which picture is showing in the widget and then show that same image in the app. However, I am having a tough time getting this to work. Thanks. 回答1: Let's say there are several images in the ui, you can set different Intent for each image, and these intents each will target a different activity. This post:

问题 Am working on a Single Page Application using Angular 8 on the frontend and Laravel on the backend. After capturing the data from a login form then submitting to the backend via JWT which works fine. Later I get a response on the logic file of the form (login.component.ts) from the backend. Now am trying to pass the response from the login component to another component via a shared service called AuthCheck.Finally I pass the data to the Navbar Component file and finally display it on the

问题 I have a Java program that connects to a local server via sockets and I would like to not have to start the server manually if Java detects that it isn't running. So if Java is not connected to the server then I use a ProcessBuilder to start it: new ProcessBuilder(new String[]{"/bin/bash", "-c", "./start_server"}).start(); Which starts the server, and runs for about 4 minutes, until the server process doesn't respond. It's interesting that if I send more commands it takes less time for this

问题 I have huawei GSM modem and I wish to read and send SMS from my c++ application. Does anybody know how to establish communication from code (what are communication protocols, I know how to connect to serial port and read and write data there). I have read something about AT commands but don't know how to apply it. 回答1: You just sent the AT commands as strings via the serial port 来源： https://stackoverflow.com/questions/22662436/how-to-communicate-with-gsm-modem-from-c-code

问题 Activity myActivity = AssumeSomeActivityExists(); Intent openActivity = new Intent(); openActivity.setAction(Intent.ACTION_VIEW); openActivity.setClass(myActivity,B.class); myActivity.startActivity(openActivity); When we do something like above how to make B instance know that it is been called and created by Activity myActivity ? 回答1: Use extras with your Intent. Smth like openActivity.putExtra("calledFromA", true) Then in B: protected void onCreate(Bundle savedInstanceState) { { super