全屏窗体的完整方法：
1.隐藏任务栏
2.设置工作区域
3.窗体最大化
此方法通用wince/mobile/ppc，但api声明要修改为coredll.dll的引用。
view plain
bool fullscreen = false;
Rectangle rect = new Rectangle();
private void button4_Click(object sender, EventArgs e)
{
fullscreen = !fullscreen;//循环。点一次全屏，再点还原。
SetFullScreen(fullscreen, ref rect);
if (fullscreen)
{
this.WindowState = FormWindowState.Maximized;//全屏
}
else
{
this.WindowState = FormWindowState.Normal;//还原
}
}
/// <summary>
/// 设置全屏或这取消全屏
/// </summary>
/// <param name="fullscreen">true:全屏 false:恢复</param>
/// <param name="rectOld">设置的时候，此参数返回原始尺寸，恢复时用此参数设置恢复</param>
/// <returns>设置结果</returns>
public static bool SetFullScreen(bool fullscreen, ref Rectangle rectOld)
{
int Hwnd = 0;
Hwnd = FindWindow("Shell_TrayWnd", null);
if (Hwnd == 0) return false;
if (fullscreen)
{
ShowWindow(Hwnd, SW_HIDE);
Rectangle rectFull = Screen.PrimaryScreen.Bounds;
SystemParametersInfo(SPI_GETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//get
SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectFull, SPIF_UPDATEINIFILE);//set
}
else
{
ShowWindow(Hwnd, SW_SHOW);
SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);
}
return true;
}
[DllImport("user32.dll", EntryPoint = "ShowWindow")]
public static extern int ShowWindow(int hwnd, int nCmdShow);
public const int SW_SHOW = 5; public const int SW_HIDE = 0;
[DllImport("user32.dll", EntryPoint = "SystemParametersInfo")]
private static extern int SystemParametersInfo(int uAction, int uParam, ref Rectangle lpvParam, int fuWinIni);
public const int SPIF_UPDATEINIFILE = 0x1;
public const int SPI_SETWORKAREA = 47;
public const int SPI_GETWORKAREA = 48;
[DllImport("user32.dll", EntryPoint = "FindWindow")]
private static extern int FindWindow(string lpClassName, string lpWindowName);
http://blog.csdn.net/wuyazhe/article/details/5728286
