private void WmGetMinMaxInfo(System.IntPtr hwnd, System.IntPtr lParam)
{
_MinMaxInfo mmi = (_MinMaxInfo)Marshal.PtrToStructure(lParam, typeof(_MinMaxInfo));
// Adjust the maximized size and position to fit the work area of the correct monitor
int MONITOR_DEFAULTTONEAREST = 0x00000002;
System.IntPtr monitor = UnsafeNativeMethods.MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
if (monitor != System.IntPtr.Zero)
{
_MonitorInfo monitorInfo = new _MonitorInfo();
UnsafeNativeMethods.GetMonitorInfo(monitor, monitorInfo);
_Rect rcWorkArea = monitorInfo.rcWork;
_Rect rcMonitorArea = monitorInfo.rcMonitor;
mmi.ptMaxPosition.X = Math.Abs(rcWorkArea.left - rcMonitorArea.left);
mmi.ptMaxPosition.Y = Math.Abs(rcWorkArea.top - rcMonitorArea.top);
var metroWindow = AssociatedObject as MetroWindow;
var ignoreTaskBar = metroWindow != null && (metroWindow.IgnoreTaskbarOnMaximize);
var x = ignoreTaskBar ? monitorInfo.rcMonitor.left : monitorInfo.rcWork.left;
var y = ignoreTaskBar ? monitorInfo.rcMonitor.top : monitorInfo.rcWork.top;
mmi.ptMaxSize.X = ignoreTaskBar ? Math.Abs(monitorInfo.rcMonitor.right - x) : Math.Abs(monitorInfo.rcWork.right - x);
mmi.ptMaxSize.Y = ignoreTaskBar ? Math.Abs(monitorInfo.rcMonitor.bottom - y) : Math.Abs(monitorInfo.rcWork.bottom - y);
// only do this on maximize
if (!ignoreTaskBar && AssociatedObject.WindowState == WindowState.Maximized)
{
mmi.ptMaxTrackSize.X = mmi.ptMaxSize.X;
mmi.ptMaxTrackSize.Y = mmi.ptMaxSize.Y;
mmi = AdjustWorkingAreaForAutoHide(monitor, mmi);
}
}
Marshal.StructureToPtr(mmi, lParam, true);
}
/// <summary>
/// This method handles the window size if the taskbar is set to auto-hide.
/// </summary>
private static _MinMaxInfo AdjustWorkingAreaForAutoHide(IntPtr monitorContainingApplication, _MinMaxInfo mmi)
{
IntPtr hwnd = UnsafeNativeMethods.FindWindow("Shell_TrayWnd", null);
IntPtr monitorWithTaskbarOnIt = UnsafeNativeMethods.MonitorFromWindow(hwnd, Constants.MONITOR_DEFAULTTONEAREST);
if (!monitorContainingApplication.Equals(monitorWithTaskbarOnIt))
{
return(mmi);
}
var abd = new _AppBarData();
abd.cbSize = Marshal.SizeOf(abd);
abd.hWnd = hwnd;
UnsafeNativeMethods.SHAppBarMessage((int)_ABMsg.ABM_GETTASKBARPOS, ref abd);
int uEdge = GetEdge(abd.rc);
bool autoHide = Convert.ToBoolean(UnsafeNativeMethods.SHAppBarMessage((int)_ABMsg.ABM_GETSTATE, ref abd));
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);
}