protected SystemWindow (IntPtr handle, EmbeddingOptions options) {
Handle = handle;
_handleRef = new HandleRef(this, Handle);
_originalStyle = WinAPI.GetWindowLongPtr(Handle, WinAPI.GWL.STYLE);
_originalExStyle = WinAPI.GetWindowLongPtr(Handle, WinAPI.GWL.EXSTYLE);
WinAPI.RECT rect;
WinAPI.GetWindowRect(_handleRef, out rect);
_originalPosition = new WinAPI.Position(rect);
_embeddingOptions = options;
}
void SetOriginalStyle () {
WinAPI.RECT rect;
WinAPI.GetWindowRect(_handleRef, out rect);
WinAPI.Position pos = new WinAPI.Position(rect);
Visible = false;
WinAPI.SetWindowLongPtr(new HandleRef(this, Handle),
WinAPI.GWL.STYLE, new UIntPtr(_originalStyle));
WinAPI.SetWindowLongPtr(new HandleRef(this, Handle),
WinAPI.GWL.EXSTYLE, new UIntPtr(_originalExStyle));
_embeddable = false;
Visible = true;
WinAPI.SetWindowPos(Handle, WinAPI.HWND.TOP, pos.X, pos.Y,
pos.Width, pos.Height, WinAPI.SWP.NOZORDER);
}