如何在不闪烁命令提示符框的情况下运行Windows任务，但是在需要时仍显示对话框？

Question

I creating a scheduled task in windows using windows command prompt:

schtasks /create /sc minute /mo 30 /tn "javadobe" /tr "\Program Files (x86)\BuildingIntelligence\javadobe\node.exe '\Program Files (x86)\BuildingIntelligence\javadobe\index.js'" /RL HIGHEST

Which is telling the command line to run "node index.js" every 30 minutes with the highest running privileges.

In my index.js file, I am checking a remote server for a version number I compare against a local version number. Now when they are the same, a node prompt window flashes briefly on the screen, which is obnoxious, and I would like to stop. However, when the host server uploads a new version of the software, I show a dialog box asking the user if they want to install the update now or later. I want to keep this functionality.

How can I keep the dialog box popping up but not show the node.js command prompt flashing all the time?

Things I have tried:

1. I have tried running my script as a service instead of a scheduled task, which keeps the windows command prompt from appearing, but doesn't allow the dialog box to appear to the user (because services run in a different desktop session).

2. In normal windows command prompt, you can start a program minimized, using

   START /MIN [application name]

   and so I tried changing my /tr argument to "start node index.js /MIN" but that didn't work.

Thanks a bunch in advance for any help!

Answer 1

Whether or not Windows creates a console window for an application is controlled by the Windows Subsystem specified in the binary image (exe file) — something specified at compile time.

If this is CONSOLE (as node.js is), Windows creates the console window before the application begins executing. In other words, it is impossible to control at runtime whether or not a window appears. If WINDOWS , Windows does not create a console window, as it expects the application to create UI.

You will have to create a custom build of the node.js executable with subsystem WINDOWS .