/// <summary>
/// ウィンドウ選択開始
/// </summary>
/// <exception cref="WindowSelectionStartException"></exception>
public void StartWindowSelection()
{
try
{
if (Handle == System.IntPtr.Zero)
{
SelectedHwnd = System.IntPtr.Zero;
FrameWindow = new FrameWindow
{
BackColor = ColorFrameWindow,
Visible = false
};
FrameWindow.Show();
HookCallback = MouseHookProcedure;
Handle = NativeMethods.SetWindowsHookEx(14, HookCallback, System.Runtime.InteropServices.Marshal.GetHINSTANCE(System.Reflection.Assembly.GetEntryAssembly().GetModules()[0]), 0); // 14 = WH_MOUSE_LL
if (Handle == System.IntPtr.Zero)
{
throw new System.ComponentModel.Win32Exception();
}
}
}
catch
{
Dispose();
throw new WindowSelectionStartException();
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
// do not run unless we are actually selecting a window.
if (!Focusable)
{
return;
}
var pos = new POINT();
if (!GetCursorPos(ref pos))
{
return;
}
var hwnd = WindowFromPoint(pos);
if (_currentFrameWindow != null && hwnd == _currentFrameWindow.Hwnd)
{
return;
}
// select the main window.
while (true)
{
var parentHwnd = GetParent(hwnd);
if (parentHwnd == IntPtr.Zero)
{
break;
}
hwnd = parentHwnd;
}
if (hwnd == _currentWindowHwnd)
{
return;
}
int processId;
var threadId = GetWindowThreadProcessId(hwnd, out processId);
var process = Process.GetProcessById(processId);
_currentWindow = new Window
{
Hwnd = hwnd,
Process = process,
};
_currentWindowHwnd = hwnd;
_canSelectCurrentWindow = _selfProcessId != processId;
if (_canSelectCurrentWindow)
{
try
{
var path = _currentWindow.Process.MainModule.FileName;
_canSelectCurrentWindow = Path.GetFileName(path) != "explorer.exe";
}
catch (Win32Exception)
{
// NB when this application is not running in 64-bit we'll get a:
// System.ComponentModel.Win32Exception
// A 32 bit processes cannot access modules of a 64 bit process.
_canSelectCurrentWindow = false;
}
}
if (_canSelectCurrentWindow)
{
RECT rect;
if (GetWindowRect(hwnd, out rect))
{
if (_currentFrameWindow == null)
{
_currentFrameWindow = new FrameWindow();
}
_currentFrameWindow.Hide();
_currentFrameWindow.Resize(rect);
}
else
{
_canSelectCurrentWindow = false;
}
}
if (_currentFrameWindow != null)
{
if (_canSelectCurrentWindow)
{
_currentFrameWindow.Show();
}
else
{
_currentFrameWindow.Hide();
}
}
OnSelectWindow(new RoutedWindowEventArgs(SelectWindowEvent, _canSelectCurrentWindow ? _currentWindow : null));
}