c#缩小成托盘的一个问题

Question

本帖最后由 edfdfg 于 2014-09-04 17:47:33 编辑

Answer 1

/托盘那个退出的菜单
privatevoid exitMenuItem_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("你确定要退出终端服务程序吗？", "确认", MessageBoxButtons.OKCancel,
                MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) == DialogResult.OK)
            {
               
                Application.Exit();
            }        
        }

Answer 2

看了下.net源代码：
        public bool Visible {
            get {
                return visible;
            }
            set {
                if (visible != value) {
                    UpdateIcon(value);
                    visible = value;
                }
            }
        }
关键代码在UpdateIcon里面
        private void UpdateIcon(bool showIconInTray) {
            lock(syncObj) {
 
                // Bail if in design mode...
                //
                if (DesignMode) {
                    return;
                }
 
                IntSecurity.UnrestrictedWindows.Demand();
 
                window.LockReference(showIconInTray);
 
                NativeMethods.NOTIFYICONDATA data = new NativeMethods.NOTIFYICONDATA();
                data.uCallbackMessage = WM_TRAYMOUSEMESSAGE;
                data.uFlags = NativeMethods.NIF_MESSAGE;
                if (showIconInTray) {
                    if (window.Handle == IntPtr.Zero) {
                        window.CreateHandle(new CreateParams());
                    }
                }
                data.hWnd = window.Handle;
                data.uID = id;
                data.hIcon = IntPtr.Zero;
                data.szTip = null;
                if (icon != null) {
                    data.uFlags |= NativeMethods.NIF_ICON;
                    data.hIcon = icon.Handle;
                }
                data.uFlags |= NativeMethods.NIF_TIP;
                data.szTip = text;
 
                if (showIconInTray && icon != null) {
                    if (!added) {
                        UnsafeNativeMethods.Shell_NotifyIcon(NativeMethods.NIM_ADD, data);
                        added = true;
                    }
                    else {
                        UnsafeNativeMethods.Shell_NotifyIcon(NativeMethods.NIM_MODIFY, data);
                    }
                }
                else if (added) {
                    UnsafeNativeMethods.Shell_NotifyIcon(NativeMethods.NIM_DELETE, data);
                    added = false;
                }
            }
        }
UnsafeNativeMethods.Shell_NotifyIcon(NativeMethods.NIM_DELETE, data);
说明其实隐藏就是删除了图标。

Answer 3

源代码在线查看：
http://referencesource.microsoft.com/#System.Windows.Forms/ndp/fx/src/winforms/Managed/System/WinForms/NotifyIcon.cs以后类似问题自己看看就知道了，无须提问。

Answer 4

我一般喜欢自己加变量控制
if(!NeedExit)
{
            e.Cancel = true;
            this.Hide();
}
想真正退出,close前把变量设置true就行了