c#控制系統工作列的自動隱藏與顯示

public struct RECT
    {
        public int Left;
        public int
Top;
        public int Right;
        public int Bottom;
    }
   
public struct APPBARDATA
    {
        public int cbSize;
       
public int hwnd;
        public int uCallbackMessage;
        public int
uEdge;
        public RECT rc;
        public int lParam;
    }

        public const int ABS_ALWAYSONTOP = 0x002;
        public const int
ABS_AUTOHIDE = 0x001;
        public const int ABS_BOTH = 0x003;
       
public const int ABM_ACTIVATE = 0x006;
        public const int ABM_GETSTATE
= 0x004;
        public const int ABM_GETTASKBARPOS = 0x005;
       
public const int ABM_NEW = 0x000;
        public const int ABM_QUERYPOS =
0x002;
        public const int ABM_SETAUTOHIDEBAR = 0x008;
        public
const int ABM_SETSTATE = 0x00A;

        ///
        /// 向系統工作列發送訊息
        ///

        [DllImport("shell32.dll")]
        public static extern
int SHAppBarMessage(int dwmsg, ref APPBARDATA app);

        [DllImport("user32.dll", EntryPoint = "FindWindow")]
       
public static extern int FindWindow(string lpClassName, string
lpWindowName);

        ///
        /// 設定系統工作列是否自動隱藏
        ///

        ///

True 設定為自動隱藏，False
取消自動隱藏
        public static void SetAppBarAutoDisplay(bool
IsAuto)
        {
            APPBARDATA abd = new
APPBARDATA();
            abd.hwnd = FindWindow("Shell_TrayWnd",
"");
            //abd.lParam = ABS_ALWAYSONTOP Or ABS_AUTOHIDE  
'自動隱藏,且位於視窗前
            //abd.lParam = ABS_ALWAYSONTOP                  
'不自動隱藏,且位於視窗前
            //abd.lParam = ABS_AUTOHIDE                      
'自動隱藏,且不位於視窗前
            if (IsAuto)
            {
               
abd.lParam = ABS_AUTOHIDE;
                SHAppBarMessage(ABM_SETSTATE, ref
abd);
            }
            else
            {
               
abd.lParam = ABS_ALWAYSONTOP;
                SHAppBarMessage(ABM_SETSTATE,
ref abd);
            }
        }

 

在XP與2003系統下測試通過！