How to use LPRun8.exe in background?

rovingwind

I try to use windows Task Scheduler to trigger LPRun8.exe to run winform while log on.

Code

void Main() {  
  System.Windows.Forms.Application.Run(new MyForm());
}

public class MyForm : System.Windows.Forms.Form {
  public MyForm() {

    this.Text = "WinForms in LINQPad";
    this.Size = new System.Drawing.Size(400, 300);

    var label = new System.Windows.Forms.Label() { Text = "This is a label", Location = new System.Drawing.Point(10, 10) };
    this.Controls.Add(label);
  }
}

Windows Task Scheduler

Result Photo

But it will keep showing a LPRun8.exe window untill I close the Winforms.

Any way to make the LPRun8 window run in background?

i2van

You can create standalone WinForms application and run it.

cmd

Alternatively, you can call the Win32 API FreeConsole() to unallocate the console assigned to the process. LPRun8-x64.exe will show the console while it's starting up, but as soon as it gets to and runs your code, you can call FreeConsole to have the system unallocate it and close it. The process (and form) will continue running like you expect. If you're okay with that brief flicker, then you're just a P/Invoke call away.

[DllImport("Kernel32.dll", CallingConvention = CallingConvention.StdCall)]
static extern bool FreeConsole();