/// <summary>
/// Attempts to get the information on primary taskbar.
/// </summary>
/// <param name="taskbarRect">Primary taskbar rectange</param>
/// <param name="taskbarAlignment">Primary taskbar alignment</param>
/// <param name="isShown">Whether primary taskbar is shown or hidden</param>
/// <returns>True if successfully gets</returns>
internal static bool TryGetTaskbar(out Rect taskbarRect, out TaskbarAlignment taskbarAlignment, out bool isShown)
{
var data = new APPBARDATA {
cbSize = (uint)Marshal.SizeOf <APPBARDATA>()
};
var result = SHAppBarMessage(
ABM_GETTASKBARPOS,
ref data);
if (Convert.ToBoolean(result))
{
taskbarRect = data.rc;
taskbarAlignment = ConvertToTaskbarAlignment(data.uEdge);
if (TryGetWindow(PrimaryTaskbarWindowClassName, out _, out Rect rect))
{
// SHAppBarMessage function returns primary taskbar rectangle as if the taskbar
// is fully shown even when it is actually hidden. In contrast, GetWindowRect
// function returns actual, current primary taskbar rectangle. Thus, if those
// rectangles do not match, the taskbar is hidden in full or part.
isShown = (taskbarRect == rect);
return(true);
}
}
taskbarRect = Rect.Empty;
taskbarAlignment = default;
isShown = default;
return(false);
void checkSides(float distance1, TaskbarAlignment alignment1, float distance2, TaskbarAlignment alignment2, float distance3, TaskbarAlignment alignment3)
{
if (distance1 < distance2)
{
if (distance3 < distance1)
{
Alignment = alignment3;
}
else
{
Alignment = alignment1;
}
}
else
{
if (distance3 < distance2)
{
Alignment = alignment3;
}
else
{
Alignment = alignment2;
}
}
}
public static bool TryGetTaskbar(out Rect taskbarRect, out TaskbarAlignment taskbarAlignment)
{
var data = new APPBARDATA {
cbSize = (uint)Marshal.SizeOf <APPBARDATA>()
};
if (SHAppBarMessage(
ABM_GETTASKBARPOS,
ref data))
{
taskbarRect = data.rc;
taskbarAlignment = ConvertToTaskbarAlignment(data.uEdge);
return(true);
}
taskbarRect = Rect.Empty;
taskbarAlignment = default;
return(false);
public static bool TryGetTaskbar(out Rect taskbarRect, out TaskbarAlignment taskbarAlignment)
{
var data = new APPBARDATA {
cbSize = (uint)Marshal.SizeOf <APPBARDATA>()
};
if (SHAppBarMessage(
ABM.ABM_GETTASKBARPOS,
ref data) == IntPtr.Zero)
{
taskbarRect = Rect.Empty;
taskbarAlignment = TaskbarAlignment.None;
return(false);
}
taskbarRect = new Rect(data.rc.left, data.rc.top, data.rc.right - data.rc.left, data.rc.bottom - data.rc.top);
taskbarAlignment = ConvertToTaskbarAlignment(data.uEdge);
return(true);
}
public NotifyWindow(Window ownerWindow, Point pivotLocation)
{
InitializeComponent();
this.Topmost = true;
this.ShowInTaskbar = false;
// Assigning ownerWindow to this.Owner will bring the owner window at the top (not the topmost)
// when this window is activated. Such behavior is not desirable.
this._ownerWindow = ownerWindow;
if (this._ownerWindow != null)
this._ownerWindow.Closing += OnOwnerWindowClosing;
this._pivotLocation = pivotLocation;
this._taskbarAlignment = WindowPosition.GetTaskbarAlignment();
this.DataContext = new NotifyWindowViewModel(ownerWindow);
}
public NotifyWindow(Window ownerWindow, Point pivotLocation)
{
InitializeComponent();
this.Topmost = true;
this.ShowInTaskbar = false;
// Assigning ownerWindow to this.Owner will bring the owner window at the top (not the topmost)
// when this window is activated. Such behavior is not desirable.
this._ownerWindow = ownerWindow;
if (this._ownerWindow != null)
{
this._ownerWindow.Closing += OnOwnerWindowClosing;
}
this._pivotLocation = pivotLocation;
this._taskbarAlignment = WindowPosition.GetTaskbarAlignment();
this.DataContext = new NotifyWindowViewModel(ownerWindow);
}
