I have a small warp server project on Windows that listen to a particular port and do something whenever I send a command to it by REST (for example: POST http://10.10.10.1:5000/print). It's a small client for printing PDF / receipt directly from another computer.
It works. But my problem is when I had to package the whole project, the Rust compiler give me an executable file (.exe). The application displays a terminal window when I run it. I want this terminal to be hidden somehow.
I try to run the program as a windows service (by using NSSM). It doesn't work for me since I had to access the printer. Windows doesn't allow my app to access any devices or any other executable as a windows service. (The reasons are explained here: How can I run an EXE program from a Windows Service using C#?)
So I plan to run my app as a tray-icon application so user can control or close the app. (https://github.com/olback/tray-item-rs)
Unfortunately, I still cannot hide the app's terminal window.
Another solution that I found is hstart (https://www.ntwind.com/software/hstart.html). But I would like to use this as "the last resort" solution since many antivirus/windows defender mark it as a malware.
Do anyone know how to hide or get rid of it ?
After lot of searching, It turns out to be easier than I thought. Just add
#![windows_subsystem = "windows"]
on top of your main.rs file. (for rust > 1.18) and the terminal is gone.
These control the /SUBSYSTEM flag in the linker. For now, only
"console" and "windows" are supported.
When is this useful? In the simplest terms, if you're developing a
graphical application, and do not specify "windows", a console window
would flash up upon your application's start. With this flag, it
won't.
https://doc.rust-lang.org/reference/runtime.html#the-windows_subsystem-attribute
https://blog.rust-lang.org/2017/06/08/Rust-1.18.html
https://learn.microsoft.com/en-us/cpp/build/reference/subsystem-specify-subsystem?view=msvc-170
Related
I try to run an windows 10 application inside a windows servercore container.
The app can run without user input via COM-Interface (and without visible GUI), but it seems that it needs to load a hidden window in the background. When I start it on docker, the application log file indicates that it's stuck on starting this window.
Is there a way to make the app assume it successfully loaded the window?
All information I found so far was about users who want to see the GUI or about Linux/Windows combinations. None of that helped me.
I understand that desktop/GUI apps are not supported in Windows containers. They do run but there's no built-in way to interact with them. I had the following idea - maybe I could use the Desktop Sharing API (https://learn.microsoft.com/en-us/windows/win32/api/_rdp/) for this purpose, the idea is to run a desktop app, then run a sharing program that uses the Desktop Sharing API, and connect to it using a Desktop Sharing API viewing program from the host.
I had to do some recap about window stations and desktops, and I noticed that when starting the container with cmd in interactive mode, I'm logged with ContainerAdministrator as a service (logon type 5). I tried running some WinAPI functions that deal with desktops and winstation and got some access denied results, so I switched to running cmd as system.
The window station of the cmd process (and other child processes) is not the interactive WinSta0, but instead some other service window station, which makes sense since I'm logged on as a service, and I figured that I can't use this window station, so I used a little program I wrote to run notepad in Winsta0 in the Default desktop. Afterwards I ran another program that enumerates the windows on WinSta0\Default, and the notepad window does get enumerated and I also get it's title, so it's running somewhere.
So now I tried running the desktop sharing API program (also on WinSta0\Default). It runs and I can connect from the host, but I only get a black screen without anything on it. I also tried running a program that takes a screenshot of the windows but I get an empty bitmap.
So I thought maybe the Default desktop is not the active desktop, and by using the OpenInputDesktop function I could confirm it - the current desktop was the Winlogon desktop, so I used the SwitchDesktop function to switch to the Default desktop (I used OpenInputDesktop again to verify that it actually worked).
Unfortunately, this didn't change anything, I still get an empty screen and empty bitmaps.
I know that containers are built for micro services and are not supposed to run GUI apps and so, but still - is there a way to make this work? Or any ideas of what else I can check? Alternatively, if you know that it can't work - I would also be happy to hear a good technical explanation of why it doesn't work.
I compiled a Windows GUI application with haskell-gi. Everything seems to be working fine. However, every time I double click on the executable in Windows Explorer to execute the program, Windows also creates a console window (i.e. a terminal) along with the main window of my application. Is it possible to ask Windows to not create the console window, which is how typical Windows GUI apps behave?
As per the ghc user guide, you can build a GUI-only application by adding the -optl-mwindows flag to your build.
Notice the warning in the link that says that in this mode using standard IO functions (putStrLn, getLine, or anything that reads from stdin or writes to stdout/stderr) will fail with an IOException on Windows.
Many applications start at startup, however, some of them do not appear on the task manager startup tab. What is that due to?
Is there any way to do this with a program, for example, spotify?
What do I need to do in order for a program to start at startup, but not showing in the startup applications tab?
Setting it in HKCU/Microsoft/Windows/CurrentVersion/Run doesn't seem to work, as it starts, but still shows on the mentioned tab.
Thank you in advance.
Its mostly a factor of how the program itself is written. If its written to run as a service, or as a System Tray application, or otherwise.
I know there are wrappers for running any exe as a service NSSM being the main one I have experience with (but this is mostly for when there is going to be NO user interaction)
I do not know if there is anything that can allow an application to run in the system tray only, not in the taskbar, if it doesn't support it.
But since Spotify does support running minimized to the tray, it does seem like there are some ways to "start spotify minimized", Spotify or other applications might have command line options or other settings to tell them to start "hidden"
We have a java application that uses Launch4j to create a windows .exe. We achieve this using the org.bluestemsoftware.open.maven.plugin, which works great. I have one inquiry however. Recently I added cmd line functionality, and found that using the GUI header didn't pass arguments when run from the .exe. OK, that makes sense.
Using the Console Header works as intended (arguments are passed). However, now when we run it in GUI mode, I get the command window in the background, no pretty splash screen, and my window name is lost. Again, this makes sense, its a CONSOLE header now. But i need both functionalities.
Is there a way to support BOTH headers in one .exe?