在VB6中,有ToolTip这个属性,可以设置鼠标悬浮在控件上的时候显示的图像. 而,在VB.NET中,实现这个功能需要使用一个类,ToolTip类. 代码如下(为了立即起效,建议将这些代码放在Form_Load代码中): Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim k As ToolTip k = New ToolTip() k.AutoPopDe…
这里,以添加启动项为例: Imports Microsoft.Win32 Imports System.Reflection.Assembly Private Sub SetAuto_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SetAuto.Click 'ok at 13-08-13 设置开机自动启动 Dim kReg As RegistryKey MsgBox("如果弹出添加启动项的警…
1.参数化类型的构造函数比较啰嗦 new HashMap<String, List<String>>() 如果你调用参数化类的构造函数,那么很不幸,你必须要指定类型参数,即便上下文中已明确了类型参数.这通常要求你连续两次提供类型参数: Map<String, List<String>> m = new HashMap<String, List<String>>(); 而 假设HashMap提供了如下静态工厂: public stati…
|| || || || || || demo.items Group All Group gGF (All) Group gFF (All) Group gC (All) Group Outdoor (All) Group Shutters (All) Group Weather (All) Group Status (All) Group GF_Living "Living Room" <video> (gGF) Group GF_Kitchen "Kitche…
openHAB 术语 Item : 对硬件设备属性的抽象 ( Items are objects that can be read from or written to in order to interact with them. Items can be bound to bindings i.e. for reading the status from e.g. KNX or for updating them.) Item UI Provider : Item UI providers…
元组(tuples) tuples是将多个单一的值组合为一个复合的值.它可以包含任何类型的值,而不需要都是相同类型. 一.元组的创建 1. let http404error = (,"NOT FOUND!") let (statusCode, statusMessage) = http404error print("The status code is \(statusCode),the status message is \(statusMessage)") 2.…
调用WindowsAPI使窗体始终保持置顶效果,不被其他窗体遮盖: [DllImport("user32.dll", CharSet = CharSet.Auto)] private static extern int SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int y, int Width, int Height, int flags); /// <summary> /// 得到当前活动的窗口 /// &…