/// <summary>
/// 取消窗口类的注册，删除内存
/// </summary>
protected virtual void DestroyWindowClassCore()
{
if (_wndClassAtom != 0)
{
var moduleHandle = ApiKernel32.GetModuleHandle(null);
ApiUser32.UnregisterClass(new IntPtr(_wndClassAtom), moduleHandle);
_wndClassAtom = 0;
}
}
/// <summary>
/// 注册窗口类。默认的。
/// </summary>
/// <param name="className"></param>
/// <returns></returns>
/// <remarks>
/// 抽象的记录提供的默认的窗口注册方法。在我们的项目中，我们需要注册的是窗口是分层窗口，用来实现边框的
/// </remarks>
protected ushort RegisterClass(string className)
{
var wndClassEx = default(WNDCLASSEX);
wndClassEx.cbSize = (uint)Marshal.SizeOf(typeof(WNDCLASSEX));
wndClassEx.style = (uint)WndClassStyle.CS_DEFAULT; // 原来是 0u
wndClassEx.cbClsExtra = 0; // 默认0就行
wndClassEx.cbWndExtra = 0; // 同上
wndClassEx.hInstance = ApiKernel32.GetModuleHandle(null); // 程序的句柄
wndClassEx.hIcon = IntPtr.Zero; // 默认 0 就行
wndClassEx.hCursor = IntPtr.Zero; // 默认 0 就行
wndClassEx.hbrBackground = IntPtr.Zero; // 默认 0 就行
wndClassEx.lpfnWndProc = Marshal.GetFunctionPointerForDelegate(_wndProc = new WndProc(WndProc));
wndClassEx.lpszClassName = className;
wndClassEx.lpszMenuName = null;
return(ApiUser32.RegisterClassEx(ref wndClassEx));
}
