static Gdip()
{
ulong token = 0;
var input = GdiplusStartupInput.MakeGdiplusStartupInput();
var output = GdiplusStartupOutput.MakeGdiplusStartupOutput();
GdiplusStartup(ref token, ref input, ref output);
}
internal static GdiplusStartupInput MakeGdiplusStartupInput()
{
GdiplusStartupInput result = new GdiplusStartupInput();
result.GdiplusVersion = 1;
result.DebugEventCallback = IntPtr.Zero;
result.SuppressBackgroundThread = 0;
result.SuppressExternalCodecs = 0;
return(result);
}
internal static extern int GdiplusStartup(ref ulong handle, ref GdiplusStartupInput startup, IntPtr zero);
public static extern Status GdiplusStartup(ref ulong token, ref GdiplusStartupInput input, ref GdiplusStartupOutput output);
public static void Main(string[] args)
{
try
{
var hInstance = Process.GetCurrentProcess().Handle;
using var marshal = new StringToIntPtrMarshaler(WindowClass);
var wndclass = new WNDCLASSEX
{
cbSize = (uint)Marshal.SizeOf(typeof(WNDCLASSEX)),
style = ClassStyles.CS_DBLCLKS,
lpfnWndProc = WindowProc,
cbClsExtra = 0,
cbWndExtra = 0,
hInstance = hInstance,
hIcon = LoadIcon(hInstance, SystemIcons.IDI_APPLICATION),
hCursor = LoadCursor(IntPtr.Zero, SystemCursors.IDC_ARROW),
hbrBackground = (IntPtr)BackgroundColors.COLOR_WINDOW,
lpszMenuName = IntPtr.Zero,
lpszClassName = marshal.GetPtr(),
};
if (RegisterClassEx(ref wndclass) != 0)
{
_window = CreateWindowEx(WindowStylesEx.WS_EX_LAYERED, WindowClass, WindowName, WindowStyles.WS_OVERLAPPED, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, IntPtr.Zero, IntPtr.Zero, hInstance, IntPtr.Zero);
if (_window != IntPtr.Zero)
{
_windowDC = GetDC(_window);
SetPositionAndSize();
ShowWindow(_window, ShowWindowCommands.SW_SHOWNORMAL);
var startupInput = new GdiplusStartupInput
{
GdiplusVersion = 1,
DebugEventCallback = IntPtr.Zero,
SuppressBackgroundThread = false,
SuppressExternalCodecs = false,
};
if (GdiplusStartup(out _gdipToken, ref startupInput, out _) == GpStatus.Ok && GdipLoadImageFromFile(SplashFile, out _splashImage) == GpStatus.Ok)
{
DrawImage();
while (GetMessage(out var msg, IntPtr.Zero, 0, 0) != 0)
{
try
{
TranslateMessage(ref msg);
DispatchMessage(ref msg);
}
catch (Exception)
{
throw;
}
}
}
else
{
//TODO: throw GDI+ Error
}
}
else
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
else
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
finally
{
ReleaseAllResource();
}
}