private bool RegisterWindowClass(string windowClassName)
{
Console.WriteLine("RegisterWindowClass with className : " + windowClassName);
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms633577(v=vs.85).aspx
WNDCLASSEX wind_class = new WNDCLASSEX
{
cbSize = Marshal.SizeOf(typeof(WNDCLASSEX)),
style = (int)(ClassStyles.CS_HREDRAW | ClassStyles.CS_VREDRAW),
lpfnWndProc = Marshal.GetFunctionPointerForDelegate(delegWndProc),
cbClsExtra = 0,
cbWndExtra = 0,
hInstance = Marshal.GetHINSTANCE(GetType().Module),
hIcon = NativeMethods.LoadIcon(IntPtr.Zero, (int)SystemIcons.IDI_WARNING),
hCursor = NativeMethods.LoadCursor(IntPtr.Zero, (int)IDC_STANDARD_CURSORS.IDC_ARROW),
// (IntPtr)COLOR.ACTIVECAPTION; Zero pointer will cause background to be 'null' that will help to avoid blinks. IntPtr.Zero
hbrBackground = (IntPtr)COLOR.BACKGROUND + 2,
lpszMenuName = windowClassName,
lpszClassName = windowClassName,
hIconSm = IntPtr.Zero
};
ushort regResult = NativeMethods.RegisterClassEx(ref wind_class);
Console.WriteLine("RegisterWindowClass: " + regResult);
if (regResult == 0)
{
uint error = NativeMethods.GetLastError();
Console.WriteLine("RegisterWindowClass: error : " + error);
return(false);
}
return(true);
}
internal static extern ushort RegisterClassEx(ref WNDCLASSEX lpWndClass);
