mirror of
https://github.com/greenshot/greenshot.git
synced 2025-01-09 15:23:03 -08:00
278 lines
13 KiB
C#
278 lines
13 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.ComponentModel;
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using System.Diagnostics;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Windows.Forms;
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using log4net;
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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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namespace GreenshotPlugin.UnmanagedHelpers {
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/// <summary>
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/// User32 Wrappers
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/// </summary>
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public static class User32 {
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private static readonly ILog LOG = LogManager.GetLogger(typeof(User32));
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private static bool _CanCallGetPhysicalCursorPos = true;
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public const int SC_RESTORE = 0xF120;
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public const int SC_MAXIMIZE = 0xF030;
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public const int SC_MINIMIZE = 0xF020;
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// For MonitorFromWindow
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public const int MONITOR_DEFAULTTONULL = 0;
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public const int MONITOR_DEFAULTTONEAREST = 2;
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public const int CURSOR_SHOWING = 0x00000001;
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/// <summary>
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/// Determines whether the specified window handle identifies an existing window.
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/// </summary>
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/// <param name="hWnd">A handle to the window to be tested.</param>
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/// <returns>
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/// If the window handle identifies an existing window, the return value is true.
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/// If the window handle does not identify an existing window, the return value is false.
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/// </returns>
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool IsWindow(IntPtr hWnd);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool IsWindowVisible(IntPtr hWnd);
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[DllImport("user32", SetLastError = true)]
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public static extern int GetWindowThreadProcessId(IntPtr hWnd, out int processId);
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[DllImport("user32", SetLastError = true)]
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public static extern int GetWindowThreadProcessId(IntPtr hWnd, IntPtr processId);
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[DllImport("user32")]
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public static extern IntPtr AttachThreadInput(int idAttach, int idAttachTo, int fAttach);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr GetParent(IntPtr hWnd);
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[DllImport("user32", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int cch);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool BringWindowToTop(IntPtr hWnd);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr GetForegroundWindow();
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr GetDesktopWindow();
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool SetForegroundWindow(IntPtr hWnd);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool GetWindowPlacement(IntPtr hWnd, ref WindowPlacement lpwndpl);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool SetWindowPlacement(IntPtr hWnd, [In] ref WindowPlacement lpwndpl);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool IsIconic(IntPtr hWnd);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool IsZoomed(IntPtr hWnd);
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[DllImport("user32", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int GetClassName (IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);
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[DllImport("user32", SetLastError = true)]
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public static extern uint GetClassLong(IntPtr hWnd, int nIndex);
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[DllImport("user32", SetLastError = true, EntryPoint = "GetClassLongPtr")]
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public static extern IntPtr GetClassLongPtr(IntPtr hWnd, int nIndex);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool PrintWindow(IntPtr hWnd, IntPtr hDc, uint nFlags);
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[DllImport("user32", CharSet=CharSet.Unicode, SetLastError=true)]
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public static extern IntPtr SendMessage(IntPtr hWnd, uint wMsg, IntPtr wParam, IntPtr lParam);
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[DllImport("user32", SetLastError = true, EntryPoint = "GetWindowLong")]
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public static extern int GetWindowLong(IntPtr hWnd, int index);
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[DllImport("user32", SetLastError = true, EntryPoint = "GetWindowLongPtr")]
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public static extern IntPtr GetWindowLongPtr(IntPtr hWnd, int nIndex);
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[DllImport("user32", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int SetWindowLong(IntPtr hWnd, int index, int styleFlags);
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[DllImport("user32", SetLastError = true, EntryPoint = "SetWindowLongPtr")]
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public static extern IntPtr SetWindowLongPtr(IntPtr hWnd, int index, IntPtr styleFlags);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr MonitorFromWindow(IntPtr hWnd, MonitorFrom dwFlags);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr MonitorFromRect([In] ref RECT lprc, uint dwFlags);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool GetWindowInfo(IntPtr hWnd, ref WindowInfo pwi);
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[DllImport("user32", SetLastError = true)]
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public static extern int EnumChildWindows(IntPtr hWndParent, EnumWindowsProc lpEnumFunc, IntPtr lParam);
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[DllImport("user32", SetLastError = true)]
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public static extern RegionResult GetWindowRgn(IntPtr hWnd, SafeHandle hRgn);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, WindowPos uFlags);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr GetClipboardOwner();
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// Added for finding Metro apps, Greenshot 1.1
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[DllImport("user32", SetLastError = true, CharSet = CharSet.Unicode)]
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public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
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[DllImport("user32", SetLastError = true, CharSet = CharSet.Unicode)]
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public static extern IntPtr FindWindowEx(IntPtr hWndParent, IntPtr hWndChildAfter, string lpszClass, string lpszWindow);
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/// uiFlags: 0 - Count of GDI objects
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/// uiFlags: 1 - Count of USER objects
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/// - Win32 GDI objects (pens, brushes, fonts, palettes, regions, device contexts, bitmap headers)
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/// - Win32 USER objects:
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/// - WIN32 resources (accelerator tables, bitmap resources, dialog box templates, font resources, menu resources, raw data resources, string table entries, message table entries, cursors/icons)
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/// - Other USER objects (windows, menus)
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///
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[DllImport("user32", SetLastError = true)]
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public static extern uint GetGuiResources(IntPtr hProcess, uint uiFlags);
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[DllImport("user32", SetLastError = true, CharSet = CharSet.Unicode)]
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public static extern uint RegisterWindowMessage(string lpString);
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[DllImport("user32", SetLastError = true, CharSet = CharSet.Unicode)]
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public static extern IntPtr SendMessageTimeout(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam, SendMessageTimeoutFlags fuFlags, uint uTimeout, out UIntPtr lpdwResult);
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[DllImport("user32", SetLastError = true)]
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private static extern bool GetPhysicalCursorPos(out POINT cursorLocation);
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/// <summary>
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/// The following is used for Icon handling
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/// </summary>
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/// <param name="hIcon"></param>
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/// <returns></returns>
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[DllImport("user32", SetLastError = true)]
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public static extern SafeIconHandle CopyIcon(IntPtr hIcon);
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[DllImport("user32", SetLastError = true)]
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public static extern bool DestroyIcon(IntPtr hIcon);
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[DllImport("user32", SetLastError = true)]
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public static extern bool GetCursorInfo(out CursorInfo cursorInfo);
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[DllImport("user32", SetLastError = true)]
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public static extern bool GetIconInfo(SafeIconHandle iconHandle, out IconInfo iconInfo);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr SetCapture(IntPtr hWnd);
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[DllImport("user32", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern bool ReleaseCapture();
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr CreateIconIndirect(ref IconInfo icon);
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[DllImport("user32", SetLastError = true)]
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public static extern IntPtr OpenInputDesktop(uint dwFlags, bool fInherit, DesktopAccessRight dwDesiredAccess);
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[DllImport("user32", SetLastError = true)]
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public static extern bool SetThreadDesktop(IntPtr hDesktop);
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[DllImport("user32", SetLastError = true)]
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public static extern bool CloseDesktop(IntPtr hDesktop);
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/// <summary>
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/// Retrieves the cursor location safely, accounting for DPI settings in Vista/Windows 7.
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/// </summary>
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/// <returns>Point with cursor location, relative to the origin of the monitor setup
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/// (i.e. negative coordinates arepossible in multiscreen setups)</returns>
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public static Point GetCursorLocation() {
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if (Environment.OSVersion.Version.Major >= 6 && _CanCallGetPhysicalCursorPos) {
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try {
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if (GetPhysicalCursorPos(out var cursorLocation)) {
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return new Point(cursorLocation.X, cursorLocation.Y);
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}
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Win32Error error = Win32.GetLastErrorCode();
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LOG.ErrorFormat("Error retrieving PhysicalCursorPos : {0}", Win32.GetMessage(error));
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} catch (Exception ex) {
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LOG.Error("Exception retrieving PhysicalCursorPos, no longer calling this. Cause :", ex);
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_CanCallGetPhysicalCursorPos = false;
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}
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}
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return new Point(Cursor.Position.X, Cursor.Position.Y);
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}
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/// <summary>
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/// Wrapper for the GetClassLong which decides if the system is 64-bit or not and calls the right one.
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/// </summary>
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/// <param name="hWnd">IntPtr</param>
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/// <param name="nIndex">int</param>
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/// <returns>IntPtr</returns>
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public static IntPtr GetClassLongWrapper(IntPtr hWnd, int nIndex) {
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if (IntPtr.Size > 4) {
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return GetClassLongPtr(hWnd, nIndex);
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} else {
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return new IntPtr(GetClassLong(hWnd, nIndex));
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}
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}
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/// <summary>
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/// Wrapper for the GetWindowLong which decides if the system is 64-bit or not and calls the right one.
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/// </summary>
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/// <param name="hWnd"></param>
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/// <param name="nIndex"></param>
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/// <returns></returns>
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public static long GetWindowLongWrapper(IntPtr hWnd, int nIndex) {
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if (IntPtr.Size == 8) {
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return GetWindowLongPtr(hWnd, nIndex).ToInt64();
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} else {
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return GetWindowLong(hWnd, nIndex);
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}
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}
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/// <summary>
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/// Wrapper for the SetWindowLong which decides if the system is 64-bit or not and calls the right one.
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/// </summary>
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/// <param name="hWnd"></param>
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/// <param name="nIndex"></param>
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/// <param name="styleFlags"></param>
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public static void SetWindowLongWrapper(IntPtr hWnd, int nIndex, IntPtr styleFlags) {
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if (IntPtr.Size == 8) {
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SetWindowLongPtr(hWnd, nIndex, styleFlags);
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} else {
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SetWindowLong(hWnd, nIndex, styleFlags.ToInt32());
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}
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}
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public static uint GetGuiResourcesGDICount()
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{
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using var currentProcess = Process.GetCurrentProcess();
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return GetGuiResources(currentProcess.Handle, 0);
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}
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public static uint GetGuiResourcesUserCount()
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{
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using var currentProcess = Process.GetCurrentProcess();
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return GetGuiResources(currentProcess.Handle, 1);
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}
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/// <summary>
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/// Helper method to create a Win32 exception with the windows message in it
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/// </summary>
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/// <param name="method">string with current method</param>
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/// <returns>Exception</returns>
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public static Exception CreateWin32Exception(string method) {
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var exceptionToThrow = new Win32Exception();
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exceptionToThrow.Data.Add("Method", method);
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return exceptionToThrow;
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}
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}
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}
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