src/modules/powerdisplay/PowerDisplay/Helpers/WindowHelper.cs - main - githubmirror/PowerToys

src/modules/powerdisplay/PowerDisplay/Helpers/WindowHelper.cs
88 строк3 KB
Niels Laute
Refactor transparent overlay into TransparentWindow + TransientSurface (#48915)
27 июн 2026, 00:25
27 июн 2026, 00:25fb6843b
// Copyright (c) Microsoft Corporation
// The Microsoft Corporation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Runtime.InteropServices;

namespace PowerDisplay.Helpers
{
    /// <summary>
    /// PowerDisplay-local window helpers. Flyout positioning/sizing now lives in
    /// <c>Microsoft.PowerToys.Common.UI.Controls.Window.FlyoutWindowHelper</c> (Common.UI.Controls).
    /// </summary>
    internal static partial class WindowHelper
    {
        // Window Styles
        private const int GwlStyle = -16;
        private const int WsCaption = 0x00C00000;
        private const int WsThickframe = 0x00040000;
        private const int WsMinimizebox = 0x00020000;
        private const int WsMaximizebox = 0x00010000;
        private const int WsSysmenu = 0x00080000;

        // Extended Window Styles
        private const int GwlExstyle = -20;
        private const int WsExDlgmodalframe = 0x00000001;
        private const int WsExWindowedge = 0x00000100;
        private const int WsExClientedge = 0x00000200;
        private const int WsExStaticedge = 0x00020000;
        private const uint SwpNosize = 0x0001;
        private const uint SwpNomove = 0x0002;
        private const uint SwpFramechanged = 0x0020;

        // P/Invoke declarations (64-bit only - PowerToys only builds for x64/ARM64)
        [LibraryImport("user32.dll", EntryPoint = "GetWindowLongPtrW")]
        private static partial nint GetWindowLongPtr(nint hWnd, int nIndex);

        [LibraryImport("user32.dll", EntryPoint = "SetWindowLongPtrW")]
        private static partial nint SetWindowLong(nint hWnd, int nIndex, nint dwNewLong);

        [LibraryImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static partial bool SetWindowPos(
            nint hWnd,
            nint hWndInsertAfter,
            int x,
            int y,
            int cx,
            int cy,
            uint uFlags);

        /// <summary>
        /// Disable window moving and resizing functionality.
        /// </summary>
        public static void DisableWindowMovingAndResizing(nint hWnd)
        {
            // Get current window style
            nint style = GetWindowLongPtr(hWnd, GwlStyle);

            // Remove resizable borders, title bar, and system menu
            style &= ~WsThickframe;
            style &= ~WsMaximizebox;
            style &= ~WsMinimizebox;
            style &= ~WsCaption;  // Remove entire title bar
            style &= ~WsSysmenu;  // Remove system menu

            // Set new window style
            _ = SetWindowLong(hWnd, GwlStyle, style);

            // Get extended style and remove related borders
            nint exStyle = GetWindowLongPtr(hWnd, GwlExstyle);
            exStyle &= ~WsExDlgmodalframe;
            exStyle &= ~WsExWindowedge;
            exStyle &= ~WsExClientedge;
            exStyle &= ~WsExStaticedge;
            _ = SetWindowLong(hWnd, GwlExstyle, exStyle);

            // Refresh window frame
            SetWindowPos(
                hWnd,
                0,
                0,
                0,
                0,
                0,
                SwpNomove | SwpNosize | SwpFramechanged);
        }
    }
}