How can I make console program disappear and work in the background?
I mean, I don't want to see the program, but I want to see it running in the task manager.
Thanks.
Assuming Windows and .NET:
You could set its output type to "Windows Application", and it will not open the console window....
Or you could create a Windows Service...
You could alternatively make one that goes to the system tray. This would also allow you to add a Kill Process directly from the system tray instead of going to the task manager. In .NET I have used the following:
http://www.developer.com/net/csharp/article.php/3336751
This may offer a few advantages.
Assuming a MS Windows XP environment:
My suggestion would be to consider making a Windows Service to do what you are asking, though another possibility would be to set something up within msconfig to run the program at startup or in the startup group within the "Start->All Programs->StartUp" section.
If you are on a Mac, Linux or some other O/S, there may exist a similar function to act as a place to run programs within the background.
If you are using Windows try
start command.exe
If you are using *nix
nohup command
Assuming you cannot modify the console application and make it a windowless application you could create a windowless application that launches the console program and redirects all the standard input and output streams to "dummy" streams.
On Windows use ShowWindow(FindWindowA("ConsoleWindowClass", NULL), false) to hide the console window. It will still be running in the background and is not visible on the taskbar.
However you will have to run a task manager like Taskmgr.exe to find it and shut it down.
#include <windows.h>
#include <iostream>
using namespace std;
int main () {
ShowWindow(FindWindowA("ConsoleWindowClass", NULL), false);
while(true) {
// Do your hidden stuff here
}
return 0;
}
Related
i am currently running robot tests using sikuli library(for a desktop application) on a virtual machine in azure.
I have problems with mouse not clicking intended image. and i get the error below.
[error] RobotDesktop: checkMousePosition: should be L(209,150)#S(0)[0,0 2049x1152]
but after move is `L(210,150)#S(0)[0,0 2049x1152]`
Possible cause in case you did not touch the mouse while script was running:
Mouse actions are blocked generally or by the frontmost application.
You might try to run the SikuliX stuff as admin.
[log] CLICK on L(209,150)#S(0)[0,0 2049x1152] (562 msec)
Could someone help me how to solve this issue. i tried running the script as an admin and also checked resolution but still doesnt work.
Any help would be appreciated. thanks.
That message is thrown usually because lack of privileges. If you tried running the program vía command line, try to create a new user with Administrative privileges. Later, execute the program with Shift + Left Click --> Run as ... and enter the new credentials. That should work.
I have a project uses Qt GUI which works on raspberry-pi2; however I don't want users to interact with the operating system. I just want that the only application appears on the screen (from boot to shutdown) to be is my application. Actually the retropie project has done what I actually want. So I want to prepare an minimal SD Card image like that. Is there any tool or way to do that?
You can use openembedded http://www.openembedded.org/wiki/Main_Page for this.
Creat file that describe packages for your image, at your case base system + qt,
plus create description of package of your program, that include .service file for run you program at start with systemd. The command MACHINE=raspberry-something bitbake your-image
I'd just use the init scripts to run your application as soon as possible and make it handle all user inputs (keyboard and mouse) properly, without giving any way to the user to close it.
i am working on sample applications using QT on Mac and i found out problem with one of its API. I want to run process so i am using following function
QProcess::startDetached();
And i am passing program(location of exe )and argument list as parameter now problem is that if the application is allready running then the this will create another process and runs it where as when i cross cheked with Windows its behavior is different in the sense that it does not start application which is allready running. can anyone help me how to fix the issue??
I think, it depends on the application properties. On window you can open multiple Doc files but cannot open Window Media player in two different (new) window.
So, First try opening a new application while its running. If its success, then it should work with QProcess .
I'm using Ubuntu and Qt Creator 4
I have a .cpp program in the executable form (say abc.out) that I wish to run when I press a button. It contains a number of cin and cout, so I want it to run on a "terminal" (on Ubuntu) so that I am able to input and output values to it. How can I do that?
I've tried system() and
also,
QProcess p1;
p1.start(./abc.out);
Using QProcess, my executable runs but stops at the first cout. It runs on the application output screen in Qt Creator and not on terminal.
For example:
I see on application output:
enter name:
When I type the value and press enter here, it doesn't accept the value, but moves to the next line and allows me to type further.
I want to run this abc.out file on the terminal. Any ideas would be really helpful.
Do you mean Qt Creator 2.4? In any case, on the Projects tab, you should find the Run settings section and from there you can find a "Run in terminal" checkbox. You could also use a Custom Executable option and type there: gnome-terminal --command ./abc.out The exact details can vary a bit as I'm using Qt Creator 2.5.
This should work when launching from Qt Creator, but when you use your app outside the IDE, you need to launch it from terminal and not by double clicking the executable. To fix this, I can think of two ways:
Launch a terminal window from QtGui (something like QProcess::execute("gnome-terminal --command ./abc.out"); ), though the problem is different systems have different terminal names.
Provide a Qt input/text box yourself as part of your GUI which then forwards the user input to the executable (something like myqprocess.write(input_asked_from_user_by_QtGui); ). Here you probably need to know what information to ask the user beforehand. If you want to display the cout output of the started process, you can use the read method and friends of the QProcess.
From your question I assume that you are writing an application that launches other applications using QProcess. Thats fine, but if your subprocess is waiting for data from the standard input it will wait forever since you did not provide any data. The stdin of your parent application cannot be automatically guided to the subprocess. Imagine you are starting two processes from your main app. To which child process should the input go?
If you want to communicate with child processes, you must use the QIODevice methods of QProcess and send/read data from/to that application.
The only sensible solution is to launch the target application in a terminal. Whether your own code provides the terminal window or you reuse an existing terminal application is up to you.
Well i have an adobe air which runs vlc-player at background as service. i check that in Windows Task Manager , the service runs when air application launches.
here is the code
processArgs.push("--extraintf");
processArgs.push("rc"); //Remote control
processArgs.push("--rc-fake-tty"); //Use terminal as output
processArgs.push("screen://");
processArgs.push(":screen-fps=15");
processArgs.push(":screen-caching=100");
processArgs.push(":sout=#transcode{venc=x264{bframes=0,nocabac,ref=1,nf,level=13,crf=24,partitions=none},vcodec=h264,fps=15,vb=3000,width=800,height=600,acodec=none}:duplicate{dst=std{mux=mp4,access=file,dst='"+targetFile.nativePath+"'}}");
startupInfo.arguments = processArgs;
p = new NativeProcess();
p.addEventListener(ProgressEvent.STANDARD_OUTPUT_DATA, onOutputData);
p.addEventListener(ProgressEvent.STANDARD_ERROR_DATA, onErrorData);
p.addEventListener(NativeProcessExitEvent.EXIT, onExit);
now i want to close vlc-player on the button click event and i have searched the vlc- documents and found quit command and its syntax, it does not work as i have tried that syntax from windows command prompt also..
Which are the vlc-player commands that can pause,stop and close vlc-player??
Any useful link will be much helpful to me..
I've had quite a look around and looks like this (--rc-fake-tty) can't be done from Windows command line. Which means your current approach is out.
I don't no anything about Adobe but I have done some searching around and this guy has something written in C using the libVLC. Not sure if that will help or point you in the right direction.
The other thing I found was this post Adobe Air and VLC player which mentions that you should be able to use javascript and ActiveX controls on Windows. A guy in this forum has a javascript script which uses an ActiveX control to start, stop, pause etc.
There is a VLC command that you can send to override or set certain hotkeys. Search for next, prev, stop, quit, vol-up, etc in this document.
That's the best of my Googling abilities, hope it helps.
I dont want to agree that your code runs well on windows, becasue --rc-fake-tty will not run on windows, to hide the entire vlc window (it will be listed among the processes in Windows Task Manager) use --rc-quiet but to see command window use --no-rc-quiet.
To stop and quit using p.standardInput.writeUTFBytes("stop" + "\n"); is not working for me as well.