Hide TaskBar in WinForms Application [duplicate]

7
votes

How can I hide the Windows taskbar when I run my C# WinForms application?

I tried some code, but it opens in maximized view with the taskbar.

Do you have any sample code or suggestions?

3
c#winformsfullscreen
ShowInTaskbar = false; – Altivo
Why on earth do you want to hide the taskbar? If you want to take your app fullscreen, just resize it to fill the screen and the taskbar will get out of your way. See devblogs.microsoft.com/oldnewthing/20050505-04/?p=35703. – Joe White

3 Answers

19
votes

Just add this class into your project .it works as you expected.

using System;
using System.Runtime.InteropServices;

public class Taskbar
{
    [DllImport("user32.dll")]
    private static extern int FindWindow(string className, string windowText);

    [DllImport("user32.dll")]
    private static extern int ShowWindow(int hwnd, int command);

    [DllImport("user32.dll")]
    public static extern int FindWindowEx(int parentHandle, int childAfter, string className, int windowTitle);

    [DllImport("user32.dll")]
    private static extern int GetDesktopWindow();

    private const int SW_HIDE = 0;
    private const int SW_SHOW = 1;

    protected static int Handle
    {
        get
        {
            return FindWindow("Shell_TrayWnd", "");
        }
    }

    protected static int HandleOfStartButton
    {
        get
        {
            int handleOfDesktop = GetDesktopWindow();
            int handleOfStartButton = FindWindowEx(handleOfDesktop, 0, "button", 0);
            return handleOfStartButton;
        }
    }

    private Taskbar()
    {
        // hide ctor
    }

    public static void Show()
    {
        ShowWindow(Handle, SW_SHOW);
        ShowWindow(HandleOfStartButton, SW_SHOW);
    }

    public static void Hide()
    {
        ShowWindow(Handle, SW_HIDE);
        ShowWindow(HandleOfStartButton, SW_HIDE);
    }
}

USAGE:

Taskbar.Hide();
4
votes

You need to set WinForms application from property like below

private void Form1_Load(object sender, EventArgs e)
    {
        this.TopMost = true;
        this.FormBorderStyle = FormBorderStyle.None;
        this.WindowState = FormWindowState.Maximized;
    }
3
votes

You need to use P/INVOKE

[DllImport("user32.dll")]
private static extern int FindWindow(string className, string windowText);
[DllImport("user32.dll")]
private static extern int ShowWindow(int hwnd, int command);

private const int SW_HIDE = 0;
private const int SW_SHOW = 1;

int hwnd = FindWindow("Shell_TrayWnd","");
ShowWindow(hwnd,SW_HIDE);

I hope that helps