public static HRESULT ChangeWindowMessageFilterEx(IntPtr hwnd, WM message, MSGFLT action, out MSGFLTINFO filterInfo)
{
filterInfo = MSGFLTINFO.NONE;
if (!Utility.IsOSVistaOrNewer)
{
return(HRESULT.S_FALSE);
}
if (!Utility.IsOSWindows7OrNewer)
{
if (!NativeMethods._ChangeWindowMessageFilter(message, action))
{
return((HRESULT)Win32Error.GetLastError());
}
return(HRESULT.S_OK);
}
else
{
CHANGEFILTERSTRUCT changefilterstruct = new CHANGEFILTERSTRUCT
{
cbSize = (uint)Marshal.SizeOf(typeof(CHANGEFILTERSTRUCT))
};
if (!NativeMethods._ChangeWindowMessageFilterEx(hwnd, message, action, ref changefilterstruct))
{
return((HRESULT)Win32Error.GetLastError());
}
filterInfo = changefilterstruct.ExtStatus;
return(HRESULT.S_OK);
}
}
public Form1()
{
InitializeComponent();
CHANGEFILTERSTRUCT filterStatus = new CHANGEFILTERSTRUCT();
filterStatus.size = (uint)Marshal.SizeOf(filterStatus);
filterStatus.info = 0;
ChangeWindowMessageFilterEx(Handle, 0x4A, ChangeWindowMessageFilterExAction.Allow, ref filterStatus);
}
private void RunWindowInNewAppcontext(bool AllowAccessFromNonElevatedProcess)
{
IntPtr hwnd;
lock (lockObject) {
// Create window
hwnd = CreateWindowExW(
0, // dwExStyle
className, // lpClassName
className, // lpWindowName
0, // dwStyle
0, // x
0, // y
0, // nWidth
0, // nHeight
IntPtr.Zero, // hWndParent
IntPtr.Zero, // hMenu
IntPtr.Zero, // hInstance
IntPtr.Zero // lpParam
);
if (AllowAccessFromNonElevatedProcess)
{
CHANGEFILTERSTRUCT filterStatus = new CHANGEFILTERSTRUCT();
filterStatus.size = (uint)Marshal.SizeOf(filterStatus);
bool b = ChangeWindowMessageFilterEx(hwnd, WM_COPYDATA, ChangeWindowMessageFilterExAction.Allow, ref filterStatus);
}
appContext = new ApplicationContext();
Monitor.Pulse(lockObject);
}
// Pageant window is run in its own application context so that it does
// not block the UI thread of applications that use it.
Application.Run(appContext);
// make sure socket files are cleaned up when we stop.
StopCygwinSocket();
StopMsysSocket();
StopWindowsOpenSshPipe();
if (hwnd != IntPtr.Zero)
{
if (DestroyWindow(hwnd))
{
hwnd = IntPtr.Zero;
disposed = true;
}
}
}
public Form1()
{
InitializeComponent();
try
{
CHANGEFILTERSTRUCT filterStatus = new CHANGEFILTERSTRUCT();
filterStatus.size = (uint)Marshal.SizeOf(filterStatus);
filterStatus.info = 0;
ChangeWindowMessageFilterEx(Handle, 0x4A, ChangeWindowMessageFilterExAction.Allow, ref filterStatus);
}
catch (Exception)
{
Close();
}
}
public static Win32ErrorCode EnableWM_CopyData(IntPtr windowHandle)
{
CHANGEFILTERSTRUCT changeFilter = new CHANGEFILTERSTRUCT();
changeFilter.size = (uint)Marshal.SizeOf(changeFilter);
changeFilter.info = 0;
if (!MyUser32.ChangeWindowMessageFilterEx(windowHandle, User32.WindowMessage.WM_COPYDATA, ChangeWindowMessageFilterExAction.Allow, ref changeFilter))
{
return(Kernel32.GetLastError());
}
else
{
return(Win32ErrorCode.ERROR_SUCCESS);
}
}
RegisteredWindowInfo CreateWindowRegister(HookType type, String messageName)
{
RegisteredWindowInfo winRegTemp = new RegisteredWindowInfo();
CHANGEFILTERSTRUCT filterStatus = new CHANGEFILTERSTRUCT();
filterStatus.size = (uint)Marshal.SizeOf(filterStatus);
filterStatus.info = 0;
//Register the window with api call
winRegTemp.windowRegisterID = RegisterWindowMessage(messageName);
//Allow messages to be received form lower privileged processes
ChangeWindowMessageFilterEx(hWnd, winRegTemp.windowRegisterID, ChangeWindowMessageFilterExAction.Allow, ref filterStatus);
winRegTemp.type = type;
return(winRegTemp);
}
public void EnableDragDrop(IntPtr hWnd)
{
if (Is7OrHigher)
{
CHANGEFILTERSTRUCT changeStruct = new CHANGEFILTERSTRUCT();
changeStruct.cbSize = Convert.ToUInt32(Marshal.SizeOf(typeof(CHANGEFILTERSTRUCT)));
ChangeWindowMessageFilterEx(hWnd, WM_DROPFILES, ChangeWindowMessageFilterExAction.Allow, ref changeStruct);
ChangeWindowMessageFilterEx(hWnd, WM_COPYDATA, ChangeWindowMessageFilterExAction.Allow, ref changeStruct);
ChangeWindowMessageFilterEx(hWnd, WM_COPYGLOBALDATA, ChangeWindowMessageFilterExAction.Allow, ref changeStruct);
}
else if (IsVistaOrHigher)
{
ChangeWindowMessageFilter(WM_DROPFILES, ChangeWindowMessageFilterFlags.Add);
ChangeWindowMessageFilter(WM_COPYDATA, ChangeWindowMessageFilterFlags.Add);
ChangeWindowMessageFilter(WM_COPYGLOBALDATA, ChangeWindowMessageFilterFlags.Add);
}
DragAcceptFiles(hWnd, true);
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
var handle = new WindowInteropHelper(GetWindow(this)).Handle;
var eh = new CHANGEFILTERSTRUCT();
eh.size = (uint)Marshal.SizeOf(eh);
for (uint i = 1; i <= WM_DROPFILES; i++)
{
ChangeWindowMessageFilterEx(handle, i, ChangeWindowMessageFilterExAction.Allow, ref eh);
}
var b1 = ChangeWindowMessageFilterEx(handle, 0x0049, ChangeWindowMessageFilterExAction.Allow, ref eh);
var b2 = ChangeWindowMessageFilterEx(handle, WM_DROPFILES, ChangeWindowMessageFilterExAction.Allow, ref eh);
var b3 = ChangeWindowMessageFilterEx(handle, WM_COPYDATA, ChangeWindowMessageFilterExAction.Allow, ref eh);
//ChangeWindowMessageFilter(WM_DROPFILES, MSGFLT_ADD);
//ChangeWindowMessageFilter(WM_COPYDATA, MSGFLT_ADD);
//ChangeWindowMessageFilter(0x0049, MSGFLT_ADD);
}
public static extern bool ChangeWindowMessageFilterEx(IntPtr hWnd, uint msg, ChangeWindowMessageFilterExAction action, ref CHANGEFILTERSTRUCT changeInfo);
public static extern bool ChangeWindowMessageFilterEx(IntPtr hWnd, uint msg, ChangeWindowMessageFilterExAction action, ref CHANGEFILTERSTRUCT changeInfo);
private static extern bool _ChangeWindowMessageFilterEx(IntPtr hwnd, WM message, MSGFLT action, [In][Out] ref CHANGEFILTERSTRUCT pChangeFilterStruct);
public void EnableDragDrop(IntPtr hWnd)
{
if (Is7OrHigher)
{
CHANGEFILTERSTRUCT changeStruct = new CHANGEFILTERSTRUCT();
changeStruct.cbSize = Convert.ToUInt32(Marshal.SizeOf(typeof(CHANGEFILTERSTRUCT)));
ChangeWindowMessageFilterEx(hWnd, WM_DROPFILES, ChangeWindowMessageFilterExAction.Allow, ref changeStruct);
ChangeWindowMessageFilterEx(hWnd, WM_COPYDATA, ChangeWindowMessageFilterExAction.Allow, ref changeStruct);
ChangeWindowMessageFilterEx(hWnd, WM_COPYGLOBALDATA, ChangeWindowMessageFilterExAction.Allow, ref changeStruct);
}
else if (IsVistaOrHigher)
{
ChangeWindowMessageFilter(WM_DROPFILES, ChangeWindowMessageFilterFlags.Add);
ChangeWindowMessageFilter(WM_COPYDATA, ChangeWindowMessageFilterFlags.Add);
ChangeWindowMessageFilter(WM_COPYGLOBALDATA, ChangeWindowMessageFilterFlags.Add);
}
DragAcceptFiles(hWnd, true);
}
private static extern bool ChangeWindowMessageFilterEx(IntPtr hWnd, uint message, ChangeWindowMessageFilterExAction action, [In, Out, Optional] ref CHANGEFILTERSTRUCT changeInfo);
