private void RegisterWindowClass()
{
_wndProcDelegate = WndProc;
var wc = new WindowClassEx
{
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW | WindowClassStyles.CS_OWNDC,
WindowProc = _wndProcDelegate,
InstanceHandle = Kernel32.GetModuleHandle(null),
CursorHandle = User32.LoadCursor(IntPtr.Zero, (IntPtr)SystemCursor.IDC_ARROW),
ClassName = CLASS_NAME
};
wc.Size = (uint)Marshal.SizeOf(wc);
// Load user icon - if any.
wc.IconHandle = User32.LoadImage(Kernel32.GetModuleHandle(null), "#32512", ResourceImageType.IMAGE_ICON, 0, 0, LoadResourceFlags.LR_DEFAULTSIZE | LoadResourceFlags.LR_SHARED);
if (wc.IconHandle == IntPtr.Zero)
{
Kernel32.SetLastError(0);
// None loaded - load default.
wc.IconHandle = User32.LoadImage(IntPtr.Zero, (IntPtr)SystemIcon.IDI_APPLICATION, ResourceImageType.IMAGE_ICON, 0, 0, LoadResourceFlags.LR_DEFAULTSIZE | LoadResourceFlags.LR_SHARED);
}
ushort windowClass = User32.RegisterClassEx(ref wc);
if (windowClass == 0)
{
CheckError("Win32: Failed to register window class.", true);
}
CheckError("Win32: Could not register class.");
}
private static ushort CreateWindowClass(WndProc wndProc, string menuName, string className)
{
var wnd = new WindowClassEx()
{
cbSize = WindowClassEx.GetSize(),
style = 0,
lpfnWndProc = Marshal.GetFunctionPointerForDelegate(wndProc),
cbClsExtra = 0,
cbWndExtra = 0,
hInstance = IntPtr.Zero,
hIcon = IntPtr.Zero,
hCursor = IntPtr.Zero,
hbrBackground = IntPtr.Zero,
lpszMenuName = menuName,
lpszClassName = className,
hIconSm = IntPtr.Zero
};
var regResult = User32.RegisterClassEx(ref wnd);
if (regResult == 0)
{
ExceptionHelper.ThrowLastWin32Exception();
}
return(regResult);
}
/// <summary>
/// The create window.
/// </summary>
private void CreateWindow()
{
var instanceHandle = Kernel32Methods.GetModuleHandle(IntPtr.Zero);
_windowProc = WindowProc;
var wc = new WindowClassEx
{
Size = (uint)Marshal.SizeOf <WindowClassEx>(),
ClassName = "chromelywindow",
CursorHandle = User32Helpers.LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
IconHandle = GetIconHandle(),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW,
BackgroundBrushHandle = new IntPtr((int)StockObject.WHITE_BRUSH),
WindowProc = _windowProc,
InstanceHandle = instanceHandle
};
var resReg = User32Methods.RegisterClassEx(ref wc);
if (resReg == 0)
{
Log.Error("chromelywindow registration failed");
return;
}
var styles = GetWindowStyles(_hostConfig.HostPlacement.State);
var placement = _hostConfig.HostPlacement;
NativeMethods.RECT rect;
rect.Left = placement.Left;
rect.Top = placement.Top;
rect.Right = placement.Left + placement.Width;
rect.Bottom = placement.Top + placement.Height;
NativeMethods.AdjustWindowRectEx(ref rect, styles.Item1, false, styles.Item2);
var hwnd = User32Methods.CreateWindowEx(
styles.Item2,
wc.ClassName,
_hostConfig.HostPlacement.Frameless ? string.Empty : _hostConfig.HostTitle,
styles.Item1,
rect.Left,
rect.Top,
rect.Right - rect.Left,
rect.Bottom - rect.Top,
IntPtr.Zero,
IntPtr.Zero,
instanceHandle,
IntPtr.Zero);
if (hwnd == IntPtr.Zero)
{
Log.Error("chromelywindow creation failed");
return;
}
User32Methods.ShowWindow(Handle, styles.Item3);
User32Methods.UpdateWindow(Handle);
}
public WindowFactory(string name, WindowClassStyles styles, IntPtr hInstance, IntPtr hIcon, IntPtr hCursor,
IntPtr hBgBrush, WindowProc wndProc)
{
var cache = Cache.Instance;
var className = name ?? Guid.NewGuid().ToString();
this.ClassName = className;
this.InstanceHandle = hInstance;
this.m_windowProc = wndProc ?? DefWindowProc;
this.m_classInitializerProcRef = this.ClassInitializerProc;
var classInfo = new WindowClassEx
{
Size = cache.WindowClassExSize,
ClassName = className,
CursorHandle = hCursor,
IconHandle = hIcon,
Styles = styles,
BackgroundBrushHandle = hBgBrush,
WindowProc = this.m_classInitializerProcRef,
InstanceHandle = hInstance
};
this.RegisterClass(ref classInfo);
}
public void Init(string title, int width, int height, bool vsync, bool fullscreen)
{
if (m_Info != null)
{
throw new InvalidOperationException("application already initialized");
}
m_Info = new ApplicationInfo
{
Title = title,
Width = width,
Height = height,
VSync = vsync,
FullScreen = fullscreen
};
IntPtr hInstance = Kernel32Methods.GetModuleHandle(IntPtr.Zero);
m_WindowProc = WindowProc;
var wc = new WindowClassEx
{
Size = (uint)Marshal.SizeOf <WindowClassEx>(),
ClassName = "MainWindow",
CursorHandle = User32Helpers.LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
IconHandle = User32Helpers.LoadIcon(IntPtr.Zero, SystemIcon.IDI_APPLICATION),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW | WindowClassStyles.CS_OWNDC,
BackgroundBrushHandle = new IntPtr((int)StockObject.WHITE_BRUSH),
WindowProc = m_WindowProc,
InstanceHandle = hInstance
};
if (User32Methods.RegisterClassEx(ref wc) == 0)
{
throw new ExternalException("window registration failed");
}
NetCoreEx.Geometry.Rectangle size = new NetCoreEx.Geometry.Rectangle(0, 0, width, height);
User32Methods.AdjustWindowRectEx(ref size, WindowStyles.WS_OVERLAPPEDWINDOW | WindowStyles.WS_CLIPCHILDREN | WindowStyles.WS_CLIPSIBLINGS,
false, WindowExStyles.WS_EX_APPWINDOW | WindowExStyles.WS_EX_WINDOWEDGE);
m_hWnd = User32Methods.CreateWindowEx(WindowExStyles.WS_EX_APPWINDOW | WindowExStyles.WS_EX_WINDOWEDGE, wc.ClassName,
title, WindowStyles.WS_OVERLAPPEDWINDOW | WindowStyles.WS_CLIPCHILDREN | WindowStyles.WS_CLIPSIBLINGS,
(int)CreateWindowFlags.CW_USEDEFAULT, (int)CreateWindowFlags.CW_USEDEFAULT,
size.Right + (-size.Left), size.Bottom + (-size.Top), IntPtr.Zero, IntPtr.Zero, hInstance, IntPtr.Zero);
if (m_hWnd == IntPtr.Zero)
{
throw new ExternalException("window creation failed");
}
User32Methods.ShowWindow(m_hWnd, ShowWindowCommands.SW_SHOWNORMAL);
User32Methods.UpdateWindow(m_hWnd);
Context.Instance.Init(m_hWnd, m_Info);
Renderer.Instance.Init();
Script.LuaEngine.Instance.Init();
}
private static void RegisterWindowClass() {
WindowClassEx classEx = new WindowClassEx();
classEx.ClassName = MessageWindowClassName;
classEx.WndProc = wndProc;
classEx.Size = (uint)Marshal.SizeOf(typeof(WindowClassEx));
var atom = ShellObjectWatcherNativeMethods.RegisterClassEx(ref classEx);
if (atom == 0) {
throw new ShellException(LocalizedMessages.MessageListenerClassNotRegistered,
Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error()));
}
_atom = atom;
}
static int Main(string[] args)
{
var instanceHandle = Kernel32Methods.GetModuleHandle(IntPtr.Zero);
var wc = new WindowClassEx
{
Size = (uint)Marshal.SizeOf <WindowClassEx>(),
ClassName = "MainWindow",
CursorHandle = User32Helpers.LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
IconHandle = User32Helpers.LoadIcon(IntPtr.Zero, SystemIcon.IDI_APPLICATION),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW,
BackgroundBrushHandle = new IntPtr((int)StockObject.WHITE_BRUSH),
WindowProc = WindowProc,
InstanceHandle = instanceHandle
};
var resReg = User32Methods.RegisterClassEx(ref wc);
if (resReg == 0)
{
Console.Error.WriteLine("registration failed");
return(-1);
}
var hwnd = User32Methods.CreateWindowEx(WindowExStyles.WS_EX_APPWINDOW,
wc.ClassName, "Hello", WindowStyles.WS_OVERLAPPEDWINDOW,
(int)CreateWindowFlags.CW_USEDEFAULT, (int)CreateWindowFlags.CW_USEDEFAULT,
(int)CreateWindowFlags.CW_USEDEFAULT, (int)CreateWindowFlags.CW_USEDEFAULT,
IntPtr.Zero, IntPtr.Zero, instanceHandle, IntPtr.Zero);
if (hwnd == IntPtr.Zero)
{
Console.Error.WriteLine("window creation failed");
return(-1);
}
User32Methods.ShowWindow(hwnd, ShowWindowCommands.SW_SHOWNORMAL);
User32Methods.UpdateWindow(hwnd);
Message msg;
int res;
while ((res = User32Methods.GetMessage(out msg, IntPtr.Zero, 0, 0)) != 0)
{
User32Methods.TranslateMessage(ref msg);
User32Methods.DispatchMessage(ref msg);
}
return(res);
}
public WindowFactory(ref WindowClassEx classEx)
{
this.ClassName = classEx.ClassName;
this.InstanceHandle = classEx.InstanceHandle;
this.m_windowProc = classEx.WindowProc ?? DefWindowProc;
this.m_classInitializerProcRef = this.ClassInitializerProc;
// Leave the reference untouched. So, use a copy for the modified registration.
var classExClone = classEx;
classExClone.WindowProc = this.m_classInitializerProcRef;
this.RegisterClass(ref classExClone);
}
/// <summary>
/// The create window.
/// </summary>
private void CreateWindow()
{
var instanceHandle = Kernel32Methods.GetModuleHandle(IntPtr.Zero);
var wc = new WindowClassEx
{
Size = (uint)Marshal.SizeOf <WindowClassEx>(),
ClassName = "chromelywindow",
CursorHandle = User32Helpers.LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
IconHandle = GetIconHandle(),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW,
BackgroundBrushHandle = new IntPtr((int)StockObject.WHITE_BRUSH),
WindowProc = WindowProc,
InstanceHandle = instanceHandle
};
var resReg = User32Methods.RegisterClassEx(ref wc);
if (resReg == 0)
{
Log.Error("chromelywindow registration failed");
return;
}
var styles = GetWindowStyles(mHostConfig.HostState);
var hwnd = User32Methods.CreateWindowEx(
styles.Item2,
wc.ClassName,
mHostConfig.HostTitle,
styles.Item1,
0,
0,
mHostConfig.HostWidth,
mHostConfig.HostHeight,
IntPtr.Zero,
IntPtr.Zero,
instanceHandle,
IntPtr.Zero);
if (hwnd == IntPtr.Zero)
{
Log.Error("chromelywindow creation failed");
return;
}
User32Methods.ShowWindow(Handle, styles.Item3);
User32Methods.UpdateWindow(Handle);
}
private void RegisterClass(ref WindowClassEx classEx)
{
if (User32Methods.RegisterClassEx(ref classEx) == 0)
{
var errString = string.Empty;
var err = Kernel32Methods.GetLastError();
// It may not always be the correct code. Since we aren't using
// Marshal's last error. If the CLR runtime calls into the
// system meanwhile that may be returned instead, at times.
if (err != 0)
{
errString = "Possible error code: " + err;
}
throw new Exception("Failed to register class. " + errString);
}
}
public static int CreateWindow(string title)
{
// Window class
WindowClassEx windowClass = new WindowClassEx
{
Size = (uint)Marshal.SizeOf <WindowClassEx>(),
WindowProc = _wndProc,
InstanceHandle = GetModuleHandle(null),
CursorHandle = LoadCursor(IntPtr.Zero, new IntPtr(IDC_ARROW)),
ClassName = ClassName
};
RegisterClassEx(ref windowClass);
// Window
Rectangle rect = new Rectangle {
Left = 0, Top = 0, Right = _width, Bottom = _height
};
AdjustWindowRect(ref rect, WS_OVERLAPPEDWINDOW, false);
_hWnd = CreateWindowEx(0, ClassName, title, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, rect.Right - rect.Left, rect.Bottom - rect.Top,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
// GL Context
PixelFormatDescriptor pfd = new PixelFormatDescriptor
{
Size = (short)Marshal.SizeOf <PixelFormatDescriptor>(),
Version = 1,
Flags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PixelType = PFD_TYPE_RGBA,
ColorBits = 24,
StencilBits = 8
};
_hDC = GetDC(_hWnd);
int pixelFormat = ChoosePixelFormat(_hDC, ref pfd);
SetPixelFormat(_hDC, pixelFormat, ref pfd);
IntPtr hRC = wglCreateContext(_hDC);
wglMakeCurrent(_hDC, hRC);
return(0);
}
private static void RegisterWindowClass()
{
WindowClassEx classEx = new WindowClassEx();
classEx.ClassName = MessageWindowClassName;
classEx.WndProc = wndProc;
classEx.Size = (uint)Marshal.SizeOf(typeof(WindowClassEx));
var atom = ShellObjectWatcherNativeMethods.RegisterClassEx(ref classEx);
if (atom == 0)
{
throw new ShellException(LocalizedMessages.MessageListenerClassNotRegistered,
Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error()));
}
_atom = atom;
}
/// <summary> Register the class with the winapi </summary>
private protected virtual void RegisterClass()
{
WindowClassEx wcex = new WindowClassEx()
{
Style = DoubleClicks | VRedraw | HRedraw,
WindowsProc = proc,
ClsExtra = 0,
WndExtra = 0,
Icon = LoadIcon(IntPtr.Zero, (IntPtr)ApplicationIcon),
Cursor = LoadCursorA(IntPtr.Zero, (IntPtr)ArrowCursor),
IconSm = IntPtr.Zero,
Background = (IntPtr)(ColorWindow + 1),
MenuName = null,
ClassName = ClassName
};
wcex.Size = (uint)Marshal.SizeOf(wcex);
RegisterClassEx(ref wcex);
}
public static extern int RegisterClassEx(ref WindowClassEx wcex);
/// <summary>
/// Setups the instance.
/// </summary>
/// <param name="x">The x.</param>
/// <param name="y">The y.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
private void SetupInstance(int x = 0, int y = 0, int width = 800, int height = 600)
{
IsVisible = true;
Topmost = !BypassTopmost;
X = x;
Y = y;
Width = width;
Height = height;
WindowClassName = HelperMethods.GenerateRandomString(5, 11);
string randomMenuName = HelperMethods.GenerateRandomString(5, 11);
if (WindowTitle == null)
{
WindowTitle = HelperMethods.GenerateRandomString(5, 11);
}
// prepare method
_windowProc = WindowProcedure;
RuntimeHelpers.PrepareDelegate(_windowProc);
_windowProcPtr = Marshal.GetFunctionPointerForDelegate(_windowProc);
var wndClassEx = new WindowClassEx
{
cbSize = WindowClassEx.Size(),
style = 0,
lpfnWndProc = _windowProcPtr,
cbClsExtra = 0,
cbWndExtra = 0,
hInstance = IntPtr.Zero,
hIcon = IntPtr.Zero,
hCursor = IntPtr.Zero,
hbrBackground = IntPtr.Zero,
lpszMenuName = randomMenuName,
lpszClassName = WindowClassName,
hIconSm = IntPtr.Zero
};
if (User32.RegisterClassEx(ref wndClassEx) == 0)
{
WinApi.ThrowWin32Exception("Failed to register window class!");
}
uint exStyle;
if (BypassTopmost)
{
exStyle = (uint)(ExtendedWindowStyles.Transparent | ExtendedWindowStyles.Layered |
ExtendedWindowStyles.NoActivate);
}
else
{
exStyle = (uint)(ExtendedWindowStyles.TopMost | ExtendedWindowStyles.Transparent |
ExtendedWindowStyles.Layered | ExtendedWindowStyles.NoActivate);
}
WindowHandle = User32.CreateWindowEx(
exStyle,
WindowClassName,
WindowTitle,
(uint)(WindowStyles.Popup | WindowStyles.Visible),
X, Y,
Width, Height,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero
);
if (WindowHandle == IntPtr.Zero)
{
WinApi.ThrowWin32Exception("Failed to create window!");
}
User32.SetLayeredWindowAttributes(WindowHandle, 0, 255, (uint)LayeredWindowAttribute.Alpha);
User32.UpdateWindow(WindowHandle);
IsInitialized = true;
// If window is incompatible on some platforms use SetWindowLong to set the style again
// and UpdateWindow If you have changed certain window data using SetWindowLong, you must
// call SetWindowPos for the changes to take effect. Use the following combination for
// uFlags: SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED.
ExtendFrameIntoClientArea();
}
public static IntPtr CreateWindow(Func <Message, IntPtr> processMessage, string className, string title = null)
{
if (HandleWindow != IntPtr.Zero)
{
return(HandleWindow);
}
WindowProc = new WindowProc((handleWindow, wm, wParam, lParam) =>
{
IntPtr result = IntPtr.Zero;
if (processMessage != null)
{
var message = new Message
{
handle = handleWindow,
message = wm,
wParam = wParam,
lParam = lParam,
};;
result = processMessage(message);
}
if (result == IntPtr.Zero)
{
return(Win32.DefWindowProc(handleWindow, wm, wParam, lParam));
}
else
{
return(result);
}
});
WindowClassEx = new WindowClassEx()
{
size = Marshal.SizeOf(typeof(WindowClassEx)),
style = CS.HREDRAW | CS.VREDRAW,
windowProc = Marshal.GetFunctionPointerForDelegate(WindowProc),
classExtra = 0,
windowExtra = 0,
handleInstance = IntPtr.Zero,
handleIcon = IntPtr.Zero,
handleCursor = IntPtr.Zero,
handlebrBackground = IntPtr.Zero,
menuName = null,
className = className,
handleIconSm = IntPtr.Zero,
};
Tracable.LogLine("windowClassEx {0}", WindowClassEx.ToString());
var registeredClassEx = Win32.RegisterClassEx(ref WindowClassEx);
Tracable.LogLine("registeredClassEx {0}", registeredClassEx.ToString());
if (registeredClassEx == 0)
{
var error = Win32.GetLastError();
Tracable.LogLine("error {0}", error.ToRepr());
Win32.UnregisterClass(className, IntPtr.Zero);
return(IntPtr.Zero);
}
HandleWindow = Win32.CreateWindowEx
(
WS_EX.NONE,
registeredClassEx,
title ?? WindowClassEx.className,
WS.NONE,
0,
0,
0,
0,
IntPtr.Zero,
IntPtr.Zero,
WindowClassEx.handleInstance,
IntPtr.Zero
);
Tracable.LogLine("handle {0}", HandleWindow.ToRepr());
if (HandleWindow == null)
{
var error = Win32.GetLastError();
Tracable.LogLine("error {0}", error.ToRepr());
}
return(HandleWindow);
}
/// <summary>
/// The create window.
/// </summary>
private void CreateWindow()
{
var instanceHandle = Kernel32Methods.GetModuleHandle(IntPtr.Zero);
_windowProc = WindowProc;
var wc = new WindowClassEx
{
Size = (uint)Marshal.SizeOf <WindowClassEx>(),
ClassName = "chromelywindow",
CursorHandle = User32Helpers.LoadCursor(IntPtr.Zero, SystemCursor.IDC_ARROW),
IconHandle = GetIconHandle(),
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW,
BackgroundBrushHandle = new IntPtr((int)StockObject.WHITE_BRUSH),
WindowProc = _windowProc,
InstanceHandle = instanceHandle
};
var resReg = User32Methods.RegisterClassEx(ref wc);
if (resReg == 0)
{
Log.Error("chromelywindow registration failed");
return;
}
var styles = GetWindowStyles(_hostConfig.HostPlacement.State);
var placement = _hostConfig.HostPlacement;
NativeMethods.RECT rect;
rect.Left = placement.Left;
rect.Top = placement.Top;
rect.Right = placement.Left + placement.Width;
rect.Bottom = placement.Top + placement.Height;
NativeMethods.AdjustWindowRectEx(ref rect, styles.Item1, false, styles.Item2);
var hwnd = User32Methods.CreateWindowEx(
styles.Item2,
wc.ClassName,
_hostConfig.HostPlacement.Frameless ? string.Empty : _hostConfig.HostTitle,
styles.Item1,
rect.Left,
rect.Top,
rect.Right - rect.Left,
rect.Bottom - rect.Top,
IntPtr.Zero,
IntPtr.Zero,
instanceHandle,
IntPtr.Zero);
if (hwnd == IntPtr.Zero)
{
Log.Error("chromelywindow creation failed");
return;
}
if (_hostConfig.HostPlacement.KioskMode)
{
//// Set new window style and size.
var windowHDC = User32Methods.GetDC(Handle);
var fullscreenWidth = Gdi32Methods.GetDeviceCaps(windowHDC, (int)DeviceCapsParams.HORZRES);
var fullscreenHeight = Gdi32Methods.GetDeviceCaps(windowHDC, (int)DeviceCapsParams.VERTRES);
User32Methods.ReleaseDC(Handle, windowHDC);
User32Methods.SetWindowLongPtr(Handle, (int)WindowLongFlags.GWL_STYLE, (IntPtr)styles.Item1);
User32Methods.SetWindowLongPtr(Handle, (int)WindowLongFlags.GWL_EXSTYLE, (IntPtr)styles.Item2);
User32Methods.SetWindowPos(Handle, (IntPtr)HwndZOrder.HWND_TOP, 0, 0, fullscreenWidth, fullscreenHeight,
WindowPositionFlags.SWP_NOZORDER | WindowPositionFlags.SWP_FRAMECHANGED);
User32Methods.ShowWindow(Handle, ShowWindowCommands.SW_MAXIMIZE);
try
{
this._hookID = NativeMethods.SetHook(_hookCallback);
}
catch
{
DetachKeyboardHook();
}
}
else
{
User32Methods.ShowWindow(Handle, styles.Item3);
}
User32Methods.UpdateWindow(Handle);
User32Methods.RegisterHotKey(IntPtr.Zero, 1, KeyModifierFlags.MOD_CONTROL, VirtualKey.L);
}
private static extern ushort RegisterClassEx([In] ref WindowClassEx lpwcx);
private void SetupWindow()
{
// generate a random title if it's null (invalid)
if (_title == null)
{
_title = WindowHelper.GenerateRandomTitle();
}
if (string.IsNullOrEmpty(MenuName))
{
MenuName = WindowHelper.GenerateRandomTitle();
}
// if no class name is given then generate a "unique" one
if (string.IsNullOrEmpty(_className))
{
_className = WindowHelper.GenerateRandomClass();
}
// prepare window procedure
_windowProc = WindowProcedure;
_windowProcAddress = Marshal.GetFunctionPointerForDelegate(_windowProc);
// try to register our class
while (true)
{
var wndClassEx = new WindowClassEx
{
Size = WindowClassEx.NativeSize(),
Style = 0,
WindowProc = _windowProcAddress,
ClsExtra = 0,
WindowExtra = 0,
Instance = IntPtr.Zero,
Icon = IntPtr.Zero,
Curser = IntPtr.Zero,
Background = IntPtr.Zero,
MenuName = MenuName,
ClassName = _className,
IconSm = IntPtr.Zero
};
if (User32.RegisterClassEx(ref wndClassEx) != 0)
{
break;
}
else
{
// already taken name?
_className = WindowHelper.GenerateRandomClass();
}
}
var extendedWindowStyle = ExtendedWindowStyle.Transparent | ExtendedWindowStyle.Layered | ExtendedWindowStyle.NoActivate;
if (_isTopmost)
{
extendedWindowStyle |= ExtendedWindowStyle.Topmost;
}
var windowStyle = WindowStyle.Popup;
if (_isVisible)
{
windowStyle |= WindowStyle.Visible;
}
_handle = User32.CreateWindowEx(
extendedWindowStyle,
_className,
_title,
windowStyle,
_x, _y,
_width, _height,
IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
User32.SetLayeredWindowAttributes(_handle, 0, 255, LayeredWindowAttributes.Alpha);
User32.UpdateWindow(_handle);
// if the window is incompatible on some platforms then use
// SetWindowLong and UpdateWindow to set the style again and
// call SetWindowPos with SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED
if (_isVisible)
{
WindowHelper.ExtendFrameIntoClientArea(_handle);
}
}
public static extern ushort RegisterClassEx([In] ref WindowClassEx windowClassEx);
//Documentation: https://msdn.microsoft.com/en-us/library/windows/desktop/ms633587(v=vs.85).aspx private static extern ushort RegisterClassEx(ref WindowClassEx windowClass);