internal Win32Window(string title, int width, int height)
{
Width = width;
Height = height;
_wndProc = WndProc;
var wndClass = new User32.WndClass
{
lpfnWndProc = _wndProc,
style = 0x20,
hbrBackground = new IntPtr(1),
lpszClassName = "coreloader"
};
User32.RegisterClassA(ref wndClass);
const int offset = 50;
var rect = new User32.Rect
{
top = offset,
left = offset,
bottom = offset + height,
right = offset + width
};
var style = WindowStyles.WS_OVERLAPPEDWINDOW;
User32.AdjustWindowRect(ref rect, style, false);
NativeHandle = User32.CreateWindowExA(0, wndClass.lpszClassName, title, style, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
const int sizeofMsg = 48;
_msg = Marshal.AllocHGlobal(sizeofMsg);
}
public IWindow CreateWindow(CreateWindowArguments arguments)
{
var nativeWindow = new NativeWindow(arguments.Width, arguments.Height, _eventManager);
var wndClassExA = new WNDCLASSEXA
{
CbClsExtra = 0,
CbSize = Marshal.SizeOf <WNDCLASSEXA>(),
HCursor = IntPtr.Zero,
HIcon = IntPtr.Zero,
LpFnWndProc = nativeWindow.WindowProcedureFunctionPointer,
CbWndExtra = 0,
HIconSm = IntPtr.Zero,
HInstance = Marshal.GetHINSTANCE(GetType().Module),
HbrBackground = IntPtr.Zero,
LpszClassName = arguments.Title + "class",
Style = 0
};
if (User32.RegisterClassExA(ref wndClassExA) == 0)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "RegisterClassExA failed");
}
const WindowStyles wsStyle = WindowStyles.WS_OVERLAPPEDWINDOW | WindowStyles.WS_VISIBLE;
RECT windowRect = default;
windowRect.Left = 100;
windowRect.Right = arguments.Width + windowRect.Left;
windowRect.Top = 100;
windowRect.Bottom = arguments.Height + windowRect.Top;
User32.AdjustWindowRect(ref windowRect, wsStyle, false);
nativeWindow.Handle = User32.CreateWindowExA(
0,
wndClassExA.LpszClassName,
arguments.Title,
wsStyle,
arguments.X,
arguments.Y,
windowRect.Right - windowRect.Left,
windowRect.Bottom - windowRect.Top,
IntPtr.Zero,
IntPtr.Zero,
wndClassExA.HInstance,
IntPtr.Zero
);
if (nativeWindow.Handle == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error(), "CreateWindowExA failed");
}
nativeWindow.ShowWindow();
return(nativeWindow);
}