public WindowManager(
[Import] Lazy <IDispatchManager> dispatchManager
)
{
_lpClassName = (WCHAR *)(Marshal.StringToHGlobalUni($"TerraFX.Interop.Provider.Win32.UI.Window.{EntryModuleHandle}"));
_lpWindowName = (WCHAR *)(Marshal.StringToHGlobalUni($"TerraFX Win32 Window"));
_dispatchManager = dispatchManager;
var wndClassEx = new WNDCLASSEX()
{
cbSize = unchecked ((uint)(Marshal.SizeOf <WNDCLASSEX>())),
style = CS.VREDRAW | CS.HREDRAW,
lpfnWndProc = WndProc,
cbClsExtra = 0,
cbWndExtra = 0,
hInstance = EntryModuleHandle,
hIcon = HICON.NULL,
hCursor = HCURSOR.NULL,
hbrBackground = (IntPtr)(COLOR.WINDOW + 1),
lpszMenuName = LPWSTR.NULL,
lpszClassName = _lpClassName,
hIconSm = HICON.NULL
};
var classAtom = RegisterClassEx(ref wndClassEx);
if (classAtom == 0)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(RegisterClassEx));
}
_classAtom = classAtom;
}
/// <summary>Closes the instance.</summary>
public void Close()
{
var succeeded = CloseWindow(_hWnd);
if (!succeeded)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(CloseWindow));
}
}
/// <summary>Activates the instance.</summary>
public void Activate()
{
var previousActiveWindow = SetActiveWindow(_hWnd);
if (previousActiveWindow == HWND.NULL)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(SetActiveWindow));
}
}
public static void ThrowExternalExceptionForLastErrorStringTest(
[Values(null, "", "methodName")] string methodName
)
{
var errorCode = Marshal.GetLastWin32Error();
Assert.That(() => ExceptionUtilities.ThrowExternalExceptionForLastError(methodName),
Throws.InstanceOf <ExternalException>()
.With.Property("ErrorCode").EqualTo(errorCode)
);
}
/// <summary>Shows the instance.</summary>
public void Show()
{
if (!_isVisible)
{
var succeeded = ShowWindow(_hWnd, SW.SHOW);
if (!succeeded)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(ShowWindow));
}
}
}
private void Dispose(bool isDisposing)
{
if (_hWnd != HWND.NULL)
{
var succeeded = DestroyWindow(_hWnd);
if (!succeeded)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(DestroyWindow));
}
_hWnd = null;
}
}
/// <summary>Initializes a new instance of the <see cref="DispatchManager" /> class.</summary>
public DispatchManager()
{
var succeeded = QueryPerformanceFrequency(out var lpFrequency);
if (!succeeded)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(QueryPerformanceFrequency));
}
const double ticksPerSecond = Timestamp.TicksPerSecond;
_tickFrequency = (ticksPerSecond / unchecked ((ulong)(lpFrequency)));
_dispatchers = new ConcurrentDictionary <Thread, Dispatcher>();
}
/// <summary>Initializes a new instance of the <see cref="Window" /> class.</summary>
internal Window(IDispatchManager dispatchManager, LPWSTR lpClassName, LPWSTR lpWindowName, HINSTANCE hInstance)
{
var hWnd = CreateWindowEx(
WS_EX.OVERLAPPEDWINDOW,
lpClassName,
lpWindowName,
WS.OVERLAPPEDWINDOW,
unchecked ((int)(CW.USEDEFAULT)),
unchecked ((int)(CW.USEDEFAULT)),
unchecked ((int)(CW.USEDEFAULT)),
unchecked ((int)(CW.USEDEFAULT)),
HWND.NULL,
HMENU.NULL,
hInstance,
null
);
if (hWnd == HWND.NULL)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(CreateWindowEx));
}
_hWnd = hWnd;
_dispatcher = dispatchManager.DispatcherForCurrentThread;
_properties = new PropertySet();
var succeeded = GetWindowRect(_hWnd, out var lpRect);
if (!succeeded)
{
ExceptionUtilities.ThrowExternalExceptionForLastError(nameof(GetWindowRect));
}
_bounds = new Rectangle(lpRect.left, lpRect.top, (lpRect.right - lpRect.left), (lpRect.bottom - lpRect.top));
var activeWindow = GetActiveWindow();
_isActive = (activeWindow == _hWnd);
_isVisible = IsWindowVisible(hWnd);
}