/// <summary>
///
/// </summary>
/// <remarks>
/// Move operations have to be done as a single operation to reduce flickering
/// </remarks>
private void PositionShadowForms(bool move)
{
if (!_allowDrawing)
{
// Probably called before shown is complete
return;
}
void Mi()
{
bool shadowFormVisible = AllowDrawing;
foreach (VisualShadowBase shadowForm in _shadowForms)
{
shadowForm.Visible = shadowFormVisible;
}
if (!shadowFormVisible)
{
return;
}
Point desktopLocation = _parentForm.DesktopLocation;
IntPtr hWinPosInfo = PI.BeginDeferWindowPos(_shadowForms.Length);
foreach (VisualShadowBase shadowForm in _shadowForms)
{
shadowForm.CalcPositionShadowForm(desktopLocation,
CommonHelper.RealClientRectangle(_parentForm.Handle));
Rectangle targetRect = shadowForm.TargetRect;
hWinPosInfo = PI.DeferWindowPos(hWinPosInfo, shadowForm.Handle, /*PI.HWND_TOPMOST, //*/ _parentForm.Handle,
targetRect.X, targetRect.Y, targetRect.Width, targetRect.Height,
(move ? PI.SWP_.NOSIZE : 0) |
PI.SWP_.NOACTIVATE
| PI.SWP_.NOREDRAW
| PI.SWP_.SHOWWINDOW
| PI.SWP_.NOCOPYBITS
| PI.SWP_.NOOWNERZORDER
);
}
PI.EndDeferWindowPos(hWinPosInfo);
}
if (_parentForm.InvokeRequired)
{
_parentForm.Invoke((MethodInvoker)Mi);
}
else
{
Mi();
}
}