Functions/GenXdev.Windows/Get-ForegroundWindow.cs
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using System.Runtime.InteropServices; using System.Management.Automation; namespace GenXdev.Windows { [System.ComponentModel.Description(@" .SYNOPSIS Gets the handle of the currently active foreground window. .DESCRIPTION * This cmdlet retrieves the window handle (HWND) of the window that is currently in the foreground and has keyboard focus. * It uses Windows API functions through P/Invoke to interact with the User32.dll library. .LICENSE Copyright (C) 2026 René Vaessen / GenXdev This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. .EXAMPLE ```powershell Get-ForegroundWindow ``` Retrieves and returns the IntPtr handle of the currently active window. .EXAMPLE ```powershell $windowHandle = Get-ForegroundWindow Write-Host ""Active window handle: $windowHandle"" ``` Stores the foreground window handle in a variable and displays it. ")] [Cmdlet(VerbsCommon.Get, "ForegroundWindow")] [OutputType(typeof(IntPtr))] public class GetForegroundWindowCommand : PSGenXdevCmdlet { /// <summary> /// P/Invoke declaration for GetForegroundWindow from user32.dll /// </summary> [DllImport("user32.dll")] private static extern IntPtr GetForegroundWindow(); /// <summary> /// Begin processing - initialization logic /// </summary> protected override void BeginProcessing() { } /// <summary> /// Process record - main cmdlet logic /// </summary> protected override void ProcessRecord() { // Output verbose information about the operation being performed WriteVerbose("Attempting to get foreground window handle"); // Call the Windows API to get the handle of the currently active window WriteObject(GetForegroundWindow()); } /// <summary> /// End processing - cleanup logic /// </summary> protected override void EndProcessing() { } } } |