public static extern IntPtr SHAppBarMessage(int dwMessage, ref APPBARDATA pData);
/// <summary>
/// This method handles the window size if the taskbar is set to auto-hide.
/// </summary>
private static MINMAXINFO AdjustWorkingAreaForAutoHide(IntPtr monitorContainingApplication, MINMAXINFO mmi)
{
var hwnd = UnsafeNativeMethods.FindWindow("Shell_TrayWnd", null);
var monitorWithTaskbarOnIt = UnsafeNativeMethods.MonitorFromWindow(hwnd, Constants.MONITOR_DEFAULTTONEAREST);
if (monitorContainingApplication.Equals(monitorWithTaskbarOnIt) == false)
{
return mmi;
}
var abd = new APPBARDATA();
abd.cbSize = Marshal.SizeOf(abd);
abd.hWnd = hwnd;
UnsafeNativeMethods.SHAppBarMessage((int)ABMsg.ABM_GETTASKBARPOS, ref abd);
var uEdge = GetEdge(abd.rc);
var autoHide = UnsafeNativeMethods.SHAppBarMessage((int)ABMsg.ABM_GETSTATE, ref abd) == new IntPtr(1);
if (!autoHide)
{
return mmi;
}
switch (uEdge)
{
case (int)ABEdge.ABE_LEFT:
mmi.ptMaxPosition.X += 2;
mmi.ptMaxTrackSize.X -= 2;
mmi.ptMaxSize.X -= 2;
break;
case (int)ABEdge.ABE_RIGHT:
mmi.ptMaxSize.X -= 2;
mmi.ptMaxTrackSize.X -= 2;
break;
case (int)ABEdge.ABE_TOP:
mmi.ptMaxPosition.Y += 2;
mmi.ptMaxTrackSize.Y -= 2;
mmi.ptMaxSize.Y -= 2;
break;
case (int)ABEdge.ABE_BOTTOM:
mmi.ptMaxSize.Y -= 2;
mmi.ptMaxTrackSize.Y -= 2;
break;
default:
return mmi;
}
return mmi;
}