Use the below code on form load event.
private void Form2_Load(object sender, EventArgs e)
{
double left, right;
TaskBarLocationProvider.CalculateWindowPositionByTaskbar(this.Width, this.Height, out left, out right);
this.Left = Convert.ToInt16(left);
this.Top
= Convert.ToInt16(right);
}
This is the class used to calculate the left and right
coordinate for the windows application.
using System;
using System.ComponentModel;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace TaskManager
{
public static class TaskBarLocationProvider
{
//
P/Invoke goo:
private const int ABM_GETTASKBARPOS =
5;
[DllImport("shell32.dll")]
private static extern IntPtr SHAppBarMessage(int msg, ref AppBarData data);
/// <summary>
/// Where is task bar
located (at top of the screen, at bottom (default), or at the one of sides)
/// </summary>
private enum Dock
{
Left = 0,
Top = 1,
Right = 2,
Bottom = 3
}
private struct Rect
{
public int Left, Top, Right, Bottom;
}
private struct AppBarData
{
public int cbSize;
public IntPtr hWnd;
public int uCallbackMessage;
public Dock Dock;
public Rect rc;
public IntPtr lParam;
}
private static Rectangle
GetTaskBarCoordinates(Rect rc)
{
return new Rectangle(rc.Left, rc.Top,
rc.Right - rc.Left, rc.Bottom -
rc.Top);
}
private static AppBarData GetTaskBarLocation()
{
var data = new AppBarData();
data.cbSize = Marshal.SizeOf(data);
IntPtr retval = SHAppBarMessage(ABM_GETTASKBARPOS, ref data);
if (retval == IntPtr.Zero)
{
throw new Win32Exception("WinAPi Error:
does'nt work api method SHAppBarMessage");
}
return data;
}
private static Screen
FindScreenWithTaskBar(Rectangle taskBarCoordinates)
{
foreach (var screen in Screen.AllScreens)
{
if (screen.Bounds.Contains(taskBarCoordinates))
{
return screen;
}
}
return Screen.PrimaryScreen;
}
/// <summary>
/// Calculate wpf window
position for place it near to taskbar area
/// </summary>
/// <param name="windowWidth">target window height</param>
/// <param name="windowHeight">target window width</param>
/// <param name="left">Result left coordinate
<see
cref="System.Windows.Window.Left"/></param>
/// <param name="top">Result top coordinate <see cref="System.Windows.Window.Top"/></param>
public static void
CalculateWindowPositionByTaskbar(double windowWidth, double windowHeight, out double left, out double top)
{
var taskBarLocation = GetTaskBarLocation();
var taskBarRectangle =
GetTaskBarCoordinates(taskBarLocation.rc);
var screen =
FindScreenWithTaskBar(taskBarRectangle);
left = taskBarLocation.Dock == Dock.Left
? screen.Bounds.X +
taskBarRectangle.Width
: screen.Bounds.X +
screen.WorkingArea.Width - windowWidth;
top = taskBarLocation.Dock == Dock.Top
? screen.Bounds.Y +
taskBarRectangle.Height
: screen.Bounds.Y +
screen.WorkingArea.Height - windowHeight;
}
}
}