mirror of
https://github.com/greenshot/greenshot.git
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111 lines
4.3 KiB
C#
111 lines
4.3 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using GreenshotPlugin.Core;
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using GreenshotPlugin.Core.Enums;
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using GreenshotPlugin.UnmanagedHelpers.Enums;
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using GreenshotPlugin.UnmanagedHelpers.Structs;
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using Microsoft.Win32;
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namespace GreenshotPlugin.UnmanagedHelpers {
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/// <summary>
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/// Desktop Window Manager helper code
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/// </summary>
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public static class DWM {
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// DWM
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[DllImport("dwmapi", SetLastError = true)]
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public static extern int DwmRegisterThumbnail(IntPtr dest, IntPtr src, out IntPtr thumb);
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[DllImport("dwmapi", SetLastError = true)]
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public static extern int DwmUnregisterThumbnail(IntPtr thumb);
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[DllImport("dwmapi", SetLastError = true)]
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public static extern HResult DwmQueryThumbnailSourceSize(IntPtr thumb, out SIZE size);
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[DllImport("dwmapi", SetLastError = true)]
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public static extern HResult DwmUpdateThumbnailProperties(IntPtr hThumb, ref DWM_THUMBNAIL_PROPERTIES props);
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// Deprecated as of Windows 8 Release Preview
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[DllImport("dwmapi", SetLastError = true)]
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public static extern int DwmIsCompositionEnabled(out bool enabled);
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[DllImport("dwmapi", SetLastError = true)]
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public static extern int DwmGetWindowAttribute(IntPtr hWnd, DWMWINDOWATTRIBUTE dwAttribute, out RECT lpRect, int size);
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[DllImport("dwmapi", SetLastError = true)]
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public static extern int DwmGetWindowAttribute(IntPtr hWnd, DWMWINDOWATTRIBUTE dwAttribute, out bool pvAttribute, int cbAttribute);
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// Key to ColorizationColor for DWM
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private const string COLORIZATION_COLOR_KEY = @"SOFTWARE\Microsoft\Windows\DWM";
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/// <summary>
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/// Checks if the window is cloaked, this should solve some issues with the window selection code
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/// </summary>
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/// <param name="hWnd">IntPtr as hWmd</param>
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/// <returns>bool</returns>
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public static bool IsWindowCloaked(IntPtr hWnd)
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{
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if (!WindowsVersion.IsWindows8OrLater)
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{
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return false;
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}
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DwmGetWindowAttribute(hWnd, DWMWINDOWATTRIBUTE.DWMWA_CLOAKED, out bool isCloaked, Marshal.SizeOf(typeof(bool)));
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return isCloaked;
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}
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/// <summary>
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/// Helper method for an easy DWM check
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/// </summary>
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/// <returns>bool true if DWM is available AND active</returns>
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public static bool IsDwmEnabled {
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get
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{
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// According to: http://technet.microsoft.com/en-us/subscriptions/aa969538%28v=vs.85%29.aspx
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// And: http://msdn.microsoft.com/en-us/library/windows/desktop/aa969510%28v=vs.85%29.aspx
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// DMW is always enabled on Windows 8! So return true and save a check! ;-)
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if (WindowsVersion.IsWindows8OrLater)
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{
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return true;
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}
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if (WindowsVersion.IsWindowsVistaOrLater)
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{
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DwmIsCompositionEnabled(out var dwmEnabled);
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return dwmEnabled;
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}
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return false;
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}
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}
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public static Color ColorizationColor {
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get {
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using (RegistryKey key = Registry.CurrentUser.OpenSubKey(COLORIZATION_COLOR_KEY, false)) {
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object dwordValue = key?.GetValue("ColorizationColor");
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if (dwordValue != null) {
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return Color.FromArgb((int)dwordValue);
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}
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}
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return Color.White;
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}
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}
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}
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}
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