如何使一个窗体全屏化，覆盖任务栏？
如题

[解决办法]
main中这么写：

Hwnd = FindWindow( "HHTaskBar ", null);
if (Hwnd != 0)
{
//hide taskbar
ShowWindow(Hwnd, SW_HIDE);
Application.Run(new MainFrorm());
ShowWindow(Hwnd, SW_SHOW);
}

声明这样写：
[DllImport( "coredll ", EntryPoint = "FindWindow ")]
public static extern int FindWindow(
string lpWindowName,
string lpClassName
);

public const int SW_SHOW = 5;
public const int SW_HIDE = 0;
[DllImport( "coredll ", EntryPoint = "ShowWindow ")]
public static extern int ShowWindow(
int hwnd,
int nCmdShow
);

[解决办法]
声明api:
public const int SPI_SETWORKAREA = 47;
[DllImport( "coredll ", EntryPoint = "SystemParametersInfo ")]
public static extern int SystemParametersInfo(
int uAction,
int uParam,
ref Rectangle lpvParam,
int fuWinIni
);


添加引用：
using System.Runtime.InteropServices;


使用如下：
SystemParametersInfo(SPI_SETWORKAREA, 0, ref Screen.PrimaryScreen.Bounds,
SPIF_UPDATEINIFILE);
[解决办法]
<DllImport( "coredll ", EntryPoint := "SystemParametersInfo ")>
[解决办法]
翻译 成 vb.net
声明api:
Public Const SPI_SETWORKAREA As Integer = 47
<DllImport( "coredll ", EntryPoint := "SystemParametersInfo ")> _
Public Shared Function SystemParametersInfo(ByVal uAction As Integer, ByVal uParam As Integer, ByRef lpvParam As Rectangle, ByVal fuWinIni As Integer) As Integer
End Function

添加引用：

Imports System.Runtime.InteropServices

使用如下：

SystemParametersInfo(SPI_SETWORKAREA, 0, Screen.PrimaryScreen.Bounds, SPIF_UPDATEINIFILE)
[解决办法]
或这样：

this.StartPosition = FormStartPosition.Manual;
this.TopMost = true;
this.Location = new Point(0, 0);
this.Size = Screen.FromHandle(this.Handle).Bounds.Size;