SafeNativeMethodsCLR.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Shared / MS / Win32 / SafeNativeMethodsCLR.cs / 1 / SafeNativeMethodsCLR.cs

                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace MS.Win32 
{ 
    using System.Runtime.InteropServices;
    using System.Runtime.InteropServices.ComTypes; 
    using System;
    using System.Security;
    using System.Security.Permissions;
    using System.Collections; 
    using System.IO;
    using System.Text; 
    using System.ComponentModel; 

 
// The SecurityHelper class differs between assemblies and could not actually be
//  shared, so it is duplicated across namespaces to prevent name collision.
#if WINDOWS_BASE
    using MS.Internal.WindowsBase; 
#elif PRESENTATION_CORE
    using MS.Internal.PresentationCore; 
#elif PRESENTATIONFRAMEWORK 
    using MS.Internal.PresentationFramework;
#elif DRT 
    using MS.Internal.Drt;
#else
#error Attempt to use a class (duplicated across multiple namespaces) from an unknown assembly.
#endif 

    using IComDataObject = System.Runtime.InteropServices.ComTypes.IDataObject; 
 
    ///
    /// Critical - This entire class is critical as it has SuppressUnmanagedCodeSecurity. 
    /// TreatAsSafe - These Native methods have been reviewed as safe to call.
    ///
    internal static partial class SafeNativeMethods
    { 

        ///  
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static int GetMessagePos()
        {
            return SafeNativeMethodsPrivate.GetMessagePos(); 
        }
 
        ///  
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static  IntPtr GetKeyboardLayout(int dwLayout)
        { 
            return SafeNativeMethodsPrivate.GetKeyboardLayout(dwLayout);
        } 
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static  IntPtr ActivateKeyboardLayout(HandleRef hkl, int uFlags) 
        {
            return SafeNativeMethodsPrivate.ActivateKeyboardLayout(hkl, uFlags); 
        } 

#if BASE_NATIVEMETHODS 
        /// 
        /// Critical - access unmanaged code via SetLastError() and IntGetKeyboardLayoutList().
        /// TreatAsSafe - no returns from SetLastError().  Calling IntGetKeyboardLayoutList() is safe.
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static int GetKeyboardLayoutList(int size, [Out, MarshalAs(UnmanagedType.LPArray)] IntPtr[] hkls) 
        { 

            UnsafeNativeMethods.SetLastError(0); 
            int result = SafeNativeMethodsPrivate.GetKeyboardLayoutList(size, hkls);
            if(result == 0)
            {
                int win32Err = Marshal.GetLastWin32Error(); 
                if (win32Err != 0)
                { 
                    throw new Win32Exception(win32Err); 
                }
            } 

            return result;
        }
#endif 

 
        ///  
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        internal static void GetMonitorInfo(HandleRef hmonitor, [In, Out]NativeMethods.MONITORINFOEX info)
        { 
            if (SafeNativeMethodsPrivate.IntGetMonitorInfo(hmonitor, info) == false)
            { 
                throw new Win32Exception(); 
            }
        } 


        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        public static  IntPtr MonitorFromPoint(NativeMethods.POINTSTRUCT pt, int flags)
        { 
            return SafeNativeMethodsPrivate.MonitorFromPoint(pt,flags);
        }

 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static  IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags)
        {
            return  SafeNativeMethodsPrivate.MonitorFromRect(ref rect,flags);
        } 

 
        ///  
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static  IntPtr MonitorFromWindow(HandleRef handle, int flags)
       { 
        return SafeNativeMethodsPrivate.MonitorFromWindow(handle, flags);
        } 
 
#if BASE_NATIVEMETHODS
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static NativeMethods.CursorHandle LoadCursor(HandleRef hInst, IntPtr iconId) 
        { 
            NativeMethods.CursorHandle cursorHandle = SafeNativeMethodsPrivate.LoadCursor(hInst, iconId);
            if(cursorHandle == null || cursorHandle.IsInvalid) 
            {
                throw new Win32Exception();
            }
 
            return cursorHandle;
        } 
 
#endif
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static IntPtr GetCursor() 
        { 
            return SafeNativeMethodsPrivate.GetCursor();
        } 

        /// 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Hiding cursor is ok 
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        public static int ShowCursor(bool show) 
        {
            return SafeNativeMethodsPrivate.ShowCursor(show); 
        }

        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical, SecurityTreatAsSafe] 
        internal static bool AdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle)
        { 
            bool returnValue = SafeNativeMethodsPrivate.IntAdjustWindowRectEx(ref lpRect, dwStyle, bMenu, dwExStyle);
            if (returnValue == false)
            {
                throw new Win32Exception(); 
            }
            return returnValue; 
        } 

 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        internal static void GetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect) 
        { 
            if(!SafeNativeMethodsPrivate.IntGetClientRect(hWnd, ref rect))
            { 
                throw new Win32Exception();
            }
        }
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        internal static void GetWindowRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect)
        {
            if(!SafeNativeMethodsPrivate.IntGetWindowRect(hWnd, ref rect))
            { 
                throw new Win32Exception();
            } 
        } 

        ///  
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static int GetDoubleClickTime()
        { 
            return SafeNativeMethodsPrivate.GetDoubleClickTime(); 
        }
 
        /// 
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static bool IsWindowEnabled(HandleRef hWnd) 
        { 
            return SafeNativeMethodsPrivate.IsWindowEnabled(hWnd);
        } 

        /// 
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call 
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        public static bool IsWindowVisible(HandleRef hWnd) 
        {
            return SafeNativeMethodsPrivate.IsWindowVisible(hWnd); 
        }

        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        internal static bool ReleaseCapture()
        { 
            bool returnValue = SafeNativeMethodsPrivate.IntReleaseCapture();

            if (returnValue == false)
            { 
                throw new Win32Exception();
            } 
            return returnValue; 
        }
 

#if BASE_NATIVEMETHODS
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        public static bool TrackMouseEvent(NativeMethods.TRACKMOUSEEVENT tme)
        { 
            bool retVal = SafeNativeMethodsPrivate.TrackMouseEvent(tme);
            int win32Err = Marshal.GetLastWin32Error(); // Dance around FxCop
            if(!retVal && win32Err != 0)
            { 
                throw new System.ComponentModel.Win32Exception(win32Err);
            } 
            return retVal; 
        }
 

        // Note: this overload has no return value.  If we need an overload that
        // returns the timer ID, then we'll need to add one.
        ///  
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call 
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static void SetTimer(HandleRef hWnd, int nIDEvent, int uElapse) 
        {
            if(SafeNativeMethodsPrivate.SetTimer(hWnd, nIDEvent, uElapse, null) == IntPtr.Zero)
            {
                throw new Win32Exception(); 
            }
        } 
 
        // Note: this returns true or false for success.  We still don't have an overload
        // that returns the timer ID. 
        /// 
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static bool TrySetTimer(HandleRef hWnd, int nIDEvent, int uElapse) 
        { 
            if(SafeNativeMethodsPrivate.TrySetTimer(hWnd, nIDEvent, uElapse, null) == IntPtr.Zero)
            { 
                return false;
            }

            return true; 
        }
#endif 
 
        /// 
        ///     Critical: This code elevates to unmanaged code permission 
        ///     TreatAsafe: This function is safe to call as in the worst case it destroys the dispatcher timer.
        ///     it destroys a timer
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static bool KillTimer(HandleRef hwnd, int idEvent)
        { 
            return (SafeNativeMethodsPrivate.KillTimer(hwnd,idEvent)); 
        }
 

#if FRAMEWORK_NATIVEMETHODS || CORE_NATIVEMETHODS || BASE_NATIVEMETHODS
        /// 
        ///     Critical: This code elevates to unmanaged code permission 
        ///     TreatAsafe: This function is safe to call
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        public static int GetTickCount()
        { 
            return SafeNativeMethodsPrivate.GetTickCount();
        }
#endif
 
        /// 
        ///     Critical: This code elevates to unmanaged code permission 
        ///     TreatAsafe: This function is safe to call 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static bool IsWindowUnicode(HandleRef hWnd)
        {
        return (SafeNativeMethodsPrivate.IsWindowUnicode(hWnd));
        } 

 
#if BASE_NATIVEMETHODS 
        /// 
        /// Critical: This code elevates to unmanaged code permission 
        /// TreatAsSafe: Setting Cursor is ok
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static IntPtr SetCursor(HandleRef hcursor) 
        {
            return SafeNativeMethodsPrivate.SetCursor(hcursor); 
        } 

        ///  
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Setting Cursor is ok
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static IntPtr SetCursor(SafeHandle hcursor)
        { 
            return SafeNativeMethodsPrivate.SetCursor(hcursor); 
        }
#endif 

        // not used by compiler - don't include.

        ///  
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Screen to Clien is ok to give out 
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static void ScreenToClient(HandleRef hWnd, [In, Out] NativeMethods.POINT pt) 
        {
            if(SafeNativeMethodsPrivate.IntScreenToClient(hWnd, pt) == 0)
            {
                throw new Win32Exception(); 
            }
        } 
 
        /// 
        /// Critical: This code elevates to unmanaged code permission 
        /// TreatAsSafe: Process Id is ok to give out
        /// 
        [SecurityCritical, SecurityTreatAsSafe]
        public static int GetCurrentProcessId() 
        {
            return SafeNativeMethodsPrivate.GetCurrentProcessId(); 
        } 

 
        /// 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Thread ID is ok to give out
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static int GetCurrentThreadId() 
        { 
            return SafeNativeMethodsPrivate.GetCurrentThreadId();
        } 

        /// 
        /// This will return a valid handle only if a window on the current thread has capture
        /// else it will return NULL. (Refer to Platform SDK) 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Getting mouse capture is ok 
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static IntPtr GetCapture() 
        {
            return SafeNativeMethodsPrivate.GetCapture();

        } 
#if BASE_NATIVEMETHODS
        ///  
        /// This function cannot be used to capture mouse input for another process. 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Setting Capture is ok 
        /// 
        [SecurityCritical, SecurityTreatAsSafe]
        public static IntPtr SetCapture(HandleRef hwnd)
        { 
            return SafeNativeMethodsPrivate.SetCapture(hwnd);
        } 
 
        /// 
        /// This can be guessed anyways and does not relay any risky information 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Getting virtual key mapping is ok
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        internal static int MapVirtualKey(int nVirtKey, int nMapType)
        { 
            return SafeNativeMethodsPrivate.MapVirtualKey(nVirtKey,nMapType); 
        }
#endif 
        [SuppressUnmanagedCodeSecurity,SecurityCritical(SecurityCriticalScope.Everything)]
        private partial class SafeNativeMethodsPrivate
        {
 
            [DllImport(ExternDll.Kernel32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int GetCurrentProcessId(); 
 
            [DllImport(ExternDll.Kernel32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int GetCurrentThreadId(); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)]
            public static extern IntPtr GetCapture();
 
            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool IsWindowVisible(HandleRef hWnd); 
 
            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int GetMessagePos(); 

            [DllImport(ExternDll.User32, EntryPoint = "ReleaseCapture", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            public static extern bool IntReleaseCapture();
 
            [DllImport(ExternDll.User32, EntryPoint = "GetWindowRect", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)]
            public static extern bool IntGetWindowRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect); 
 
            [DllImport(ExternDll.User32, EntryPoint = "GetClientRect", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)]
            public static extern bool IntGetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect); 

            [DllImport(ExternDll.User32, EntryPoint = "AdjustWindowRectEx", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            public static extern bool IntAdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle);
 
            [DllImport(ExternDll.User32, ExactSpelling=true)]
            public static extern IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags); 
 
            [DllImport(ExternDll.User32, ExactSpelling = true)]
            public static extern IntPtr MonitorFromPoint(NativeMethods.POINTSTRUCT pt, int flags); 

            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern IntPtr ActivateKeyboardLayout(HandleRef hkl, int uFlags);
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern IntPtr GetKeyboardLayout(int dwLayout); 
 
            [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern IntPtr SetTimer(HandleRef hWnd, int nIDEvent, int uElapse, NativeMethods.TimerProc lpTimerFunc); 

            [DllImport(ExternDll.User32, EntryPoint="SetTimer", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern IntPtr TrySetTimer(HandleRef hWnd, int nIDEvent, int uElapse, NativeMethods.TimerProc lpTimerFunc);
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool KillTimer(HandleRef hwnd, int idEvent); 
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool IsWindowUnicode(HandleRef hWnd); 

            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern int GetDoubleClickTime();
 
            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool IsWindowEnabled(HandleRef hWnd); 
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern IntPtr GetCursor(); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int ShowCursor(bool show);
 
            [DllImport(ExternDll.User32, EntryPoint = "GetMonitorInfo", CharSet = CharSet.Auto, SetLastError = true)]
            public static extern bool IntGetMonitorInfo(HandleRef hmonitor, [In, Out]NativeMethods.MONITORINFOEX info); 
 
            [DllImport(ExternDll.User32, ExactSpelling=true)]
            public static extern IntPtr MonitorFromWindow(HandleRef handle, int flags); 

#if BASE_NATIVEMETHODS
            [DllImport(ExternDll.User32, CharSet = CharSet.Auto)]
            internal static extern int MapVirtualKey(int nVirtKey, int nMapType); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] 
            public static extern IntPtr SetCapture(HandleRef hwnd); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] 
            public static extern IntPtr SetCursor(HandleRef hcursor);

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)]
            public static extern IntPtr SetCursor(SafeHandle hcursor); 

            [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling=true, CharSet=CharSet.Auto)] 
            public static extern int GetKeyboardLayoutList(int size, [Out, MarshalAs(UnmanagedType.LPArray)] IntPtr[] hkls); 

            [DllImport(ExternDll.User32, ExactSpelling=true, SetLastError=true)] 
            public static extern bool TrackMouseEvent(NativeMethods.TRACKMOUSEEVENT tme);

            [DllImport(ExternDll.User32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            public static extern NativeMethods.CursorHandle LoadCursor(HandleRef hInst, IntPtr iconId); 

#endif 
 
#if BASE_NATIVEMETHODS || CORE_NATIVEMETHODS || FRAMEWORK_NATIVEMETHODS
            [DllImport(ExternDll.Kernel32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] 
            public static extern int GetTickCount();

#endif
 
            [DllImport(ExternDll.User32, EntryPoint="ScreenToClient", SetLastError=true, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern int IntScreenToClient(HandleRef hWnd, [In, Out] NativeMethods.POINT pt); 
        } 
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace MS.Win32 
{ 
    using System.Runtime.InteropServices;
    using System.Runtime.InteropServices.ComTypes; 
    using System;
    using System.Security;
    using System.Security.Permissions;
    using System.Collections; 
    using System.IO;
    using System.Text; 
    using System.ComponentModel; 

 
// The SecurityHelper class differs between assemblies and could not actually be
//  shared, so it is duplicated across namespaces to prevent name collision.
#if WINDOWS_BASE
    using MS.Internal.WindowsBase; 
#elif PRESENTATION_CORE
    using MS.Internal.PresentationCore; 
#elif PRESENTATIONFRAMEWORK 
    using MS.Internal.PresentationFramework;
#elif DRT 
    using MS.Internal.Drt;
#else
#error Attempt to use a class (duplicated across multiple namespaces) from an unknown assembly.
#endif 

    using IComDataObject = System.Runtime.InteropServices.ComTypes.IDataObject; 
 
    ///
    /// Critical - This entire class is critical as it has SuppressUnmanagedCodeSecurity. 
    /// TreatAsSafe - These Native methods have been reviewed as safe to call.
    ///
    internal static partial class SafeNativeMethods
    { 

        ///  
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static int GetMessagePos()
        {
            return SafeNativeMethodsPrivate.GetMessagePos(); 
        }
 
        ///  
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static  IntPtr GetKeyboardLayout(int dwLayout)
        { 
            return SafeNativeMethodsPrivate.GetKeyboardLayout(dwLayout);
        } 
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static  IntPtr ActivateKeyboardLayout(HandleRef hkl, int uFlags) 
        {
            return SafeNativeMethodsPrivate.ActivateKeyboardLayout(hkl, uFlags); 
        } 

#if BASE_NATIVEMETHODS 
        /// 
        /// Critical - access unmanaged code via SetLastError() and IntGetKeyboardLayoutList().
        /// TreatAsSafe - no returns from SetLastError().  Calling IntGetKeyboardLayoutList() is safe.
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static int GetKeyboardLayoutList(int size, [Out, MarshalAs(UnmanagedType.LPArray)] IntPtr[] hkls) 
        { 

            UnsafeNativeMethods.SetLastError(0); 
            int result = SafeNativeMethodsPrivate.GetKeyboardLayoutList(size, hkls);
            if(result == 0)
            {
                int win32Err = Marshal.GetLastWin32Error(); 
                if (win32Err != 0)
                { 
                    throw new Win32Exception(win32Err); 
                }
            } 

            return result;
        }
#endif 

 
        ///  
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        internal static void GetMonitorInfo(HandleRef hmonitor, [In, Out]NativeMethods.MONITORINFOEX info)
        { 
            if (SafeNativeMethodsPrivate.IntGetMonitorInfo(hmonitor, info) == false)
            { 
                throw new Win32Exception(); 
            }
        } 


        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        public static  IntPtr MonitorFromPoint(NativeMethods.POINTSTRUCT pt, int flags)
        { 
            return SafeNativeMethodsPrivate.MonitorFromPoint(pt,flags);
        }

 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static  IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags)
        {
            return  SafeNativeMethodsPrivate.MonitorFromRect(ref rect,flags);
        } 

 
        ///  
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static  IntPtr MonitorFromWindow(HandleRef handle, int flags)
       { 
        return SafeNativeMethodsPrivate.MonitorFromWindow(handle, flags);
        } 
 
#if BASE_NATIVEMETHODS
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static NativeMethods.CursorHandle LoadCursor(HandleRef hInst, IntPtr iconId) 
        { 
            NativeMethods.CursorHandle cursorHandle = SafeNativeMethodsPrivate.LoadCursor(hInst, iconId);
            if(cursorHandle == null || cursorHandle.IsInvalid) 
            {
                throw new Win32Exception();
            }
 
            return cursorHandle;
        } 
 
#endif
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static IntPtr GetCursor() 
        { 
            return SafeNativeMethodsPrivate.GetCursor();
        } 

        /// 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Hiding cursor is ok 
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        public static int ShowCursor(bool show) 
        {
            return SafeNativeMethodsPrivate.ShowCursor(show); 
        }

        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical, SecurityTreatAsSafe] 
        internal static bool AdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle)
        { 
            bool returnValue = SafeNativeMethodsPrivate.IntAdjustWindowRectEx(ref lpRect, dwStyle, bMenu, dwExStyle);
            if (returnValue == false)
            {
                throw new Win32Exception(); 
            }
            return returnValue; 
        } 

 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        internal static void GetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect) 
        { 
            if(!SafeNativeMethodsPrivate.IntGetClientRect(hWnd, ref rect))
            { 
                throw new Win32Exception();
            }
        }
 
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        internal static void GetWindowRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect)
        {
            if(!SafeNativeMethodsPrivate.IntGetWindowRect(hWnd, ref rect))
            { 
                throw new Win32Exception();
            } 
        } 

        ///  
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static int GetDoubleClickTime()
        { 
            return SafeNativeMethodsPrivate.GetDoubleClickTime(); 
        }
 
        /// 
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static bool IsWindowEnabled(HandleRef hWnd) 
        { 
            return SafeNativeMethodsPrivate.IsWindowEnabled(hWnd);
        } 

        /// 
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call 
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        public static bool IsWindowVisible(HandleRef hWnd) 
        {
            return SafeNativeMethodsPrivate.IsWindowVisible(hWnd); 
        }

        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        internal static bool ReleaseCapture()
        { 
            bool returnValue = SafeNativeMethodsPrivate.IntReleaseCapture();

            if (returnValue == false)
            { 
                throw new Win32Exception();
            } 
            return returnValue; 
        }
 

#if BASE_NATIVEMETHODS
        /// 
        ///    Critical: This code calls into unmanaged code which elevates 
        ///    TreatAsSafe: This method is ok to give out
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        public static bool TrackMouseEvent(NativeMethods.TRACKMOUSEEVENT tme)
        { 
            bool retVal = SafeNativeMethodsPrivate.TrackMouseEvent(tme);
            int win32Err = Marshal.GetLastWin32Error(); // Dance around FxCop
            if(!retVal && win32Err != 0)
            { 
                throw new System.ComponentModel.Win32Exception(win32Err);
            } 
            return retVal; 
        }
 

        // Note: this overload has no return value.  If we need an overload that
        // returns the timer ID, then we'll need to add one.
        ///  
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call 
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static void SetTimer(HandleRef hWnd, int nIDEvent, int uElapse) 
        {
            if(SafeNativeMethodsPrivate.SetTimer(hWnd, nIDEvent, uElapse, null) == IntPtr.Zero)
            {
                throw new Win32Exception(); 
            }
        } 
 
        // Note: this returns true or false for success.  We still don't have an overload
        // that returns the timer ID. 
        /// 
        ///     Critical: This code elevates to unmanaged code permission
        ///     TreatAsafe: This function is safe to call
        ///  
        [SecurityCritical,SecurityTreatAsSafe]
        public static bool TrySetTimer(HandleRef hWnd, int nIDEvent, int uElapse) 
        { 
            if(SafeNativeMethodsPrivate.TrySetTimer(hWnd, nIDEvent, uElapse, null) == IntPtr.Zero)
            { 
                return false;
            }

            return true; 
        }
#endif 
 
        /// 
        ///     Critical: This code elevates to unmanaged code permission 
        ///     TreatAsafe: This function is safe to call as in the worst case it destroys the dispatcher timer.
        ///     it destroys a timer
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static bool KillTimer(HandleRef hwnd, int idEvent)
        { 
            return (SafeNativeMethodsPrivate.KillTimer(hwnd,idEvent)); 
        }
 

#if FRAMEWORK_NATIVEMETHODS || CORE_NATIVEMETHODS || BASE_NATIVEMETHODS
        /// 
        ///     Critical: This code elevates to unmanaged code permission 
        ///     TreatAsafe: This function is safe to call
        ///  
        [SecurityCritical,SecurityTreatAsSafe] 
        public static int GetTickCount()
        { 
            return SafeNativeMethodsPrivate.GetTickCount();
        }
#endif
 
        /// 
        ///     Critical: This code elevates to unmanaged code permission 
        ///     TreatAsafe: This function is safe to call 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static bool IsWindowUnicode(HandleRef hWnd)
        {
        return (SafeNativeMethodsPrivate.IsWindowUnicode(hWnd));
        } 

 
#if BASE_NATIVEMETHODS 
        /// 
        /// Critical: This code elevates to unmanaged code permission 
        /// TreatAsSafe: Setting Cursor is ok
        /// 
        [SecurityCritical,SecurityTreatAsSafe]
        public static IntPtr SetCursor(HandleRef hcursor) 
        {
            return SafeNativeMethodsPrivate.SetCursor(hcursor); 
        } 

        ///  
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Setting Cursor is ok
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        public static IntPtr SetCursor(SafeHandle hcursor)
        { 
            return SafeNativeMethodsPrivate.SetCursor(hcursor); 
        }
#endif 

        // not used by compiler - don't include.

        ///  
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Screen to Clien is ok to give out 
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static void ScreenToClient(HandleRef hWnd, [In, Out] NativeMethods.POINT pt) 
        {
            if(SafeNativeMethodsPrivate.IntScreenToClient(hWnd, pt) == 0)
            {
                throw new Win32Exception(); 
            }
        } 
 
        /// 
        /// Critical: This code elevates to unmanaged code permission 
        /// TreatAsSafe: Process Id is ok to give out
        /// 
        [SecurityCritical, SecurityTreatAsSafe]
        public static int GetCurrentProcessId() 
        {
            return SafeNativeMethodsPrivate.GetCurrentProcessId(); 
        } 

 
        /// 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Thread ID is ok to give out
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static int GetCurrentThreadId() 
        { 
            return SafeNativeMethodsPrivate.GetCurrentThreadId();
        } 

        /// 
        /// This will return a valid handle only if a window on the current thread has capture
        /// else it will return NULL. (Refer to Platform SDK) 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Getting mouse capture is ok 
        ///  
        [SecurityCritical, SecurityTreatAsSafe]
        public static IntPtr GetCapture() 
        {
            return SafeNativeMethodsPrivate.GetCapture();

        } 
#if BASE_NATIVEMETHODS
        ///  
        /// This function cannot be used to capture mouse input for another process. 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Setting Capture is ok 
        /// 
        [SecurityCritical, SecurityTreatAsSafe]
        public static IntPtr SetCapture(HandleRef hwnd)
        { 
            return SafeNativeMethodsPrivate.SetCapture(hwnd);
        } 
 
        /// 
        /// This can be guessed anyways and does not relay any risky information 
        /// Critical: This code elevates to unmanaged code permission
        /// TreatAsSafe: Getting virtual key mapping is ok
        /// 
        [SecurityCritical, SecurityTreatAsSafe] 
        internal static int MapVirtualKey(int nVirtKey, int nMapType)
        { 
            return SafeNativeMethodsPrivate.MapVirtualKey(nVirtKey,nMapType); 
        }
#endif 
        [SuppressUnmanagedCodeSecurity,SecurityCritical(SecurityCriticalScope.Everything)]
        private partial class SafeNativeMethodsPrivate
        {
 
            [DllImport(ExternDll.Kernel32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int GetCurrentProcessId(); 
 
            [DllImport(ExternDll.Kernel32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int GetCurrentThreadId(); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)]
            public static extern IntPtr GetCapture();
 
            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool IsWindowVisible(HandleRef hWnd); 
 
            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int GetMessagePos(); 

            [DllImport(ExternDll.User32, EntryPoint = "ReleaseCapture", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            public static extern bool IntReleaseCapture();
 
            [DllImport(ExternDll.User32, EntryPoint = "GetWindowRect", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)]
            public static extern bool IntGetWindowRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect); 
 
            [DllImport(ExternDll.User32, EntryPoint = "GetClientRect", ExactSpelling = true, CharSet = CharSet.Auto, SetLastError = true)]
            public static extern bool IntGetClientRect(HandleRef hWnd, [In, Out] ref NativeMethods.RECT rect); 

            [DllImport(ExternDll.User32, EntryPoint = "AdjustWindowRectEx", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            public static extern bool IntAdjustWindowRectEx(ref NativeMethods.RECT lpRect, int dwStyle, bool bMenu, int dwExStyle);
 
            [DllImport(ExternDll.User32, ExactSpelling=true)]
            public static extern IntPtr MonitorFromRect(ref NativeMethods.RECT rect, int flags); 
 
            [DllImport(ExternDll.User32, ExactSpelling = true)]
            public static extern IntPtr MonitorFromPoint(NativeMethods.POINTSTRUCT pt, int flags); 

            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern IntPtr ActivateKeyboardLayout(HandleRef hkl, int uFlags);
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern IntPtr GetKeyboardLayout(int dwLayout); 
 
            [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern IntPtr SetTimer(HandleRef hWnd, int nIDEvent, int uElapse, NativeMethods.TimerProc lpTimerFunc); 

            [DllImport(ExternDll.User32, EntryPoint="SetTimer", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern IntPtr TrySetTimer(HandleRef hWnd, int nIDEvent, int uElapse, NativeMethods.TimerProc lpTimerFunc);
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool KillTimer(HandleRef hwnd, int idEvent); 
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool IsWindowUnicode(HandleRef hWnd); 

            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern int GetDoubleClickTime();
 
            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern bool IsWindowEnabled(HandleRef hWnd); 
 
            [DllImport(ExternDll.User32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)]
            public static extern IntPtr GetCursor(); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Auto)]
            public static extern int ShowCursor(bool show);
 
            [DllImport(ExternDll.User32, EntryPoint = "GetMonitorInfo", CharSet = CharSet.Auto, SetLastError = true)]
            public static extern bool IntGetMonitorInfo(HandleRef hmonitor, [In, Out]NativeMethods.MONITORINFOEX info); 
 
            [DllImport(ExternDll.User32, ExactSpelling=true)]
            public static extern IntPtr MonitorFromWindow(HandleRef handle, int flags); 

#if BASE_NATIVEMETHODS
            [DllImport(ExternDll.User32, CharSet = CharSet.Auto)]
            internal static extern int MapVirtualKey(int nVirtKey, int nMapType); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] 
            public static extern IntPtr SetCapture(HandleRef hwnd); 

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)] 
            public static extern IntPtr SetCursor(HandleRef hcursor);

            [DllImport(ExternDll.User32, ExactSpelling = true, CharSet = CharSet.Auto)]
            public static extern IntPtr SetCursor(SafeHandle hcursor); 

            [DllImport(ExternDll.User32, SetLastError = true, ExactSpelling=true, CharSet=CharSet.Auto)] 
            public static extern int GetKeyboardLayoutList(int size, [Out, MarshalAs(UnmanagedType.LPArray)] IntPtr[] hkls); 

            [DllImport(ExternDll.User32, ExactSpelling=true, SetLastError=true)] 
            public static extern bool TrackMouseEvent(NativeMethods.TRACKMOUSEEVENT tme);

            [DllImport(ExternDll.User32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
            public static extern NativeMethods.CursorHandle LoadCursor(HandleRef hInst, IntPtr iconId); 

#endif 
 
#if BASE_NATIVEMETHODS || CORE_NATIVEMETHODS || FRAMEWORK_NATIVEMETHODS
            [DllImport(ExternDll.Kernel32, ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Auto)] 
            public static extern int GetTickCount();

#endif
 
            [DllImport(ExternDll.User32, EntryPoint="ScreenToClient", SetLastError=true, ExactSpelling=true, CharSet=CharSet.Auto)]
            public static extern int IntScreenToClient(HandleRef hWnd, [In, Out] NativeMethods.POINT pt); 
        } 
    }
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK