/// <summary>
/// Moves a window to a screen.
/// </summary>
/// <param name="hWnd"> The window to move. </param>
/// <param name="screen"> The screen or null to move to the primary screen. </param>
/// <remarks>
/// <para>
/// Nothing happens if <paramref name="hWnd" /> is <see cref="IntPtr.Zero" />.
/// </para>
/// </remarks>
public static void MoveWindowToScreen(IntPtr hWnd, Screen screen)
{
if (hWnd == IntPtr.Zero)
{
return;
}
screen = screen ?? Screen.PrimaryScreen;
WINDOWINFO info = new WINDOWINFO();
info.cbSize = (uint)Marshal.SizeOf(info);
WindowsWindow.GetWindowInfo(hWnd, ref info);
WINDOWPLACEMENT placement = new WINDOWPLACEMENT();
placement.Length = (uint)Marshal.SizeOf(placement);
WindowsWindow.GetWindowPlacement(hWnd, ref placement);
bool isMaximized = placement.ShowCmd == WindowsWindow.SwShowmaximized;
bool isMinimized = placement.ShowCmd == WindowsWindow.SwShowminimized;
bool isNormal = placement.ShowCmd == WindowsWindow.SwShownormal;
int width = info.rcWindow.Right - info.rcWindow.Left;
int height = info.rcWindow.Bottom - info.rcWindow.Top;
if (isMaximized || isMinimized)
{
WindowsWindow.ShowWindow(hWnd, (int)WindowsWindow.SwShownormal);
}
WindowsWindow.SetWindowPos(hWnd, IntPtr.Zero, screen.WorkingArea.Left, screen.WorkingArea.Top, 0, 0,
WindowsWindow.SwpNozorder | WindowsWindow.SwpNosize);
if (isNormal)
{
WindowsWindow.SetWindowPos(hWnd, IntPtr.Zero,
screen.WorkingArea.Left + ((screen.WorkingArea.Width - width) / 2),
screen.WorkingArea.Top + ((screen.WorkingArea.Height - height) / 2), 0, 0,
WindowsWindow.SwpNozorder | WindowsWindow.SwpNosize);
}
else if (isMaximized)
{
WindowsWindow.ShowWindow(hWnd, (int)WindowsWindow.SwShowmaximized);
}
else if (isMinimized)
{
WindowsWindow.ShowWindow(hWnd, (int)WindowsWindow.SwShowminimized);
}
}
