做winform开发的时候,常常为了美化界面,把窗体的FormBorderStyle属性设置为None,即所谓的无标题窗体,这个时候,在任务栏鼠标右击是没有菜单的,那么如何吧默认的系统菜单还原回来呢?
第一步,引用命名空间
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices;
第二步,把以下代码添加到Form的类中
#region 右击菜单 [DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)] public static extern int GetWindowLong(HandleRef hWnd, int nIndex); [DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)] public static extern IntPtr SetWindowLong(HandleRef hWnd, int nIndex, int dwNewLong); const int WS_CLIPCHILDREN = 0x2000000; const int WS_MINIMIZEBOX = 0x20000; const int WS_MAXIMIZEBOX = 0x10000; const int WS_SYSMENU = 0x80000; const int CS_DBLCLKS = 0x8; protected override CreateParams CreateParams { get { CreateParams cp = base.CreateParams; cp.Style = WS_CLIPCHILDREN | WS_MINIMIZEBOX | WS_SYSMENU; cp.ClassStyle = CS_DBLCLKS; return cp; } } #endregion
OK。