63 lines
1.7 KiB
C#
63 lines
1.7 KiB
C#
/*
|
|
* Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
using System;
|
|
using System.Runtime.InteropServices;
|
|
|
|
namespace SafeExamBrowser.UserInterface.Shared.Utilities
|
|
{
|
|
/// <remarks>
|
|
/// See https://docs.microsoft.com/en-us/windows/win32/dwm/thumbnail-ovw.
|
|
/// </remarks>
|
|
public static class Thumbnail
|
|
{
|
|
public const int DWM_TNP_VISIBLE = 0x8;
|
|
public const int DWM_TNP_OPACITY = 0x4;
|
|
public const int DWM_TNP_RECTDESTINATION = 0x1;
|
|
public const int S_OK = 0;
|
|
|
|
[DllImport("dwmapi.dll")]
|
|
public static extern int DwmQueryThumbnailSourceSize(IntPtr thumbnail, out Size size);
|
|
|
|
[DllImport("dwmapi.dll")]
|
|
public static extern int DwmRegisterThumbnail(IntPtr destinationWindow, IntPtr sourceWindow, out IntPtr thumbnail);
|
|
|
|
[DllImport("dwmapi.dll")]
|
|
public static extern int DwmUnregisterThumbnail(IntPtr thumbnail);
|
|
|
|
[DllImport("dwmapi.dll")]
|
|
public static extern int DwmUpdateThumbnailProperties(IntPtr thumbnail, ref Properties properties);
|
|
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct Properties
|
|
{
|
|
public int Flags;
|
|
public Rectangle Destination;
|
|
public Rectangle Source;
|
|
public byte Opacity;
|
|
public bool Visible;
|
|
public bool SourceClientAreaOnly;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct Size
|
|
{
|
|
public int X;
|
|
public int Y;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct Rectangle
|
|
{
|
|
public int Left;
|
|
public int Top;
|
|
public int Right;
|
|
public int Bottom;
|
|
}
|
|
}
|
|
}
|