private void SetChildStyle(bool isChild)
{
long styles = (long)NativeMethods.GetWindowLongPtr(new HandleRef(_childWnd, _source.Handle), GWL.GWL_STYLE);
if (isChild)
{
if (IntPtr.Size == 4)
{
styles |= System.Convert.ToInt64(NativeMethods.WindowStyles.WS_CHILD);
}
else
{
styles |= (long)NativeMethods.WindowStyles.WS_CHILD;
}
}
else
{
NativeMethods.WindowStyles nonChild = (NativeMethods.WindowStyles) 0xffffffff ^ NativeMethods.WindowStyles.WS_CHILD;
if (IntPtr.Size == 4)
{
styles &= System.Convert.ToInt64(nonChild);
}
else
{
styles &= (long)nonChild;
}
}
NativeMethods.CriticalSetWindowLong(new HandleRef(this, _source.Handle), (int)GWL.GWL_STYLE, new IntPtr(styles));
}
public static extern IntPtr CreateWindowEx(NativeMethods.WindowStylesEx dwExStyle, [MarshalAs(UnmanagedType.LPStr)] string lpClassName, [MarshalAs(UnmanagedType.LPStr)] string lpWindowName, NativeMethods.WindowStyles dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance, IntPtr lpParam);
