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;
///
/// 向系统任务栏发送消息
///
[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);
///
/// 设置系统任务栏是否自动隐藏
///
///
public static void SetAppBarAutoDisplay(bool IsAuto)
{
APPBARDATA abd = new APPBARDATA();
abd.hwnd = FindWindow(“Shell_TrayWnd”, “”);
//abd.lParam = ABS_ALWAYSONTOP Or ABS_AUTOHIDE ‘自动隐藏,且位于窗口前
//abd.lParam = ABS_ALWAYSONTOP ‘不自动隐藏,且位于窗口前
//abd.lParam = ABS_AUTOHIDE ‘自动隐藏,且不位于窗口前
if (IsAuto)
{
abd.lParam = ABS_AUTOHIDE;
SHAppBarMessage(ABM_SETSTATE, ref abd);
}
else
{
abd.lParam = ABS_ALWAYSONTOP;
SHAppBarMessage(ABM_SETSTATE, ref abd);
}
}
在XP与2003系统下测试通过！