cursor

How to get the focused element with jQuery?

由 给你一囗甜甜゛ 提交于 2019-12-17 02:52:17
问题 Using jQuery, how can I get the input element that has the caret's (cursor's) focus? Or in other words, how to determine if an input has the caret's focus? 回答1: // Get the focused element: var $focused = $(':focus'); // No jQuery: var focused = document.activeElement; // Does the element have focus: var hasFocus = $('foo').is(':focus'); // No jQuery: elem === elem.ownerDocument.activeElement; Which one should you use? quoting the jQuery docs: As with other pseudo-class selectors (those that

Custom cursor in WPF?

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-17 02:44:05
问题 I want to use an image or icon as a custom cursor in WPF app. What's the best way to do it? 回答1: You have two basic options: When the mouse cursor is over your control, hide the system cursor by setting this.Cursor = Cursors.None; and draw your own cursor using whatever technique you like. Then, update the position and appearance of your cursor by responding to mouse events. Here are two examples: http://www.xamlog.com/2006/07/17/creating-a-custom-cursor/ http://www.hanselman.com/blog

Using external images for CSS custom cursors

由 我是研究僧i 提交于 2019-12-17 02:29:35
问题 Is it possible to use external image URLs for CSS custom cursors? The following example doesn't work: HTML: <div class="test">TEST</div> CSS: .test { background:gray; width:200px; height:200px; cursor:url('http://upload.wikimedia.org/wikipedia/commons/d/de/POL_apple.jpg'); } Fiddle: http://jsfiddle.net/wNKcU/4/ 回答1: It wasn't working because your image was too big - there are restrictions on the image dimensions. In Firefox, for example, the size limit is 128x128px. See this page for more

Python之pymysql的使用

由 故事扮演 提交于 2019-12-16 18:00:25
在python3.x中，可以使用pymysql来MySQL数据库的连接，并实现数据库的各种操作，本次博客主要介绍了pymysql的安装和使用方法。 PyMySQL的安装 一、.windows上的安装方法： 在python3.6中，自带pip3，所以在python3中可以直接使用pip3去安装所需的模块： pip3 install pymysql -i https://pypi.douban.com/simple 二、.linux下安装方法： 1.tar包下载及解压 下载tar包 wget https://pypi.python.org/packages/29/f8/919a28976bf0557b7819fd6935bfd839118aff913407ca58346e14fa6c86/PyMySQL-0.7.11.tar.gz#md5=167f28514f4c20cbc6b1ddf831ade772 解压并展开tar包 tar xf PyMySQL-0.7.11.tar.gz 2.安装 [root@localhost PyMySQL-0.7.11]# python36 setup.py install 数据库的连接 本次测试创建的数据及表： #创建数据库及表，然后插入数据 mysql> create database dbforpymysql; mysql> create

Android开发指南-框架主题-内容提供器

由 蓝咒 提交于 2019-12-15 16:29:58
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 内容提供器Content Providers 内容提供器用来存放和获取数据并使这些数据可以被所有的应用程序访问。它们是应用程序之间共享数据的唯一方法；不存在所有Android软件包都能访问的公共储存区域。 Android为常见数据类型（音频，视频，图像，个人联系人信息，等等）装载了很多内容提供器。你可以看到在android.provider包里列举了一些。你还能查询这些提供器包含了什么数据（尽管，对某些提供器，你必须获取合适的权限来读取数据）。 如果你想公开你自己的数据，你有两个选择：你可以创建你自己的内容提供器（一个ContentProvider子类）或者你可以给已有的提供器添加数据-如果存在一个控制同样类型数据的内容提供器且你拥有写的权限。 这篇文档是一篇关于如何使用内容提供器的简介。先是一个简短的基础知识讨论，然后探究如何查询一个内容提供器，如何修改内容提供器控制的数据，以及如何创建你自己的内容提供器。 内容提供器的基础知识Content Provider Basics 内容提供器究竟如何在表层下保存它的数据依赖于它的设计者。但是所有的内容提供器实现了一个公共的接口来查询这个提供器和返回结果-增加，替换，和删除数据也是一样。 这是一个客户端直接使用的接口，一般是通过ContentResolver对象

JDBC CallableStatement and Oracle SYS_REFCURSOR IN parameters?

由 大城市里の小女人 提交于 2019-12-14 03:55:53
问题 Pretty much what it says in the title, how the hell is this supposed to be done? Basically i need to pass a null (empty?) ref cursor as an IN parameter to a stored procedure. /** spring's PreparedStatementSetter#setValues(...) */ public void setValues(PreparedStatement ps) throws SQLException { CallableStatement cs = (CallableStatement) ps; cs.setString(1,"constant"); //this is the IN param cs.setNull(2, OracleTypes.CURSOR); //this is the OUT param cs.registerOutParameter(3, OracleTypes

SVG - polygon hover does not work correclty [duplicate]

由 梦想的初衷 提交于 2019-12-14 01:26:31
问题 This question already has answers here : Css hover sometimes doesn't work on svg paths (3 answers) Closed 3 years ago . As you can see on gif below, :hover state does not work properly when I move the mouse cursor from bottom polygon to upper polygon: [jsfiddle] Tested in Chrome and Firefox - the result is the same. How can I achieve SVG polygon turn :hover state on right after mouse cursor enters its borders? 回答1: There is no fill to catch the pointer event so it fails. A simple transparent

oracle execute immediate not executing without any error

由 空扰寡人 提交于 2019-12-13 23:07:11
问题 I have a cursor to return record to be used in EXECUTE IMMEDIATE CURSOR c1 IS SELECT crs_cust.CUSTOMER_ID AS CUSTOMER_ID, subset.NEW_CUSTOMER_REFERENCE_ID AS CUSTOMER_REF_ID FROM CRS_CUSTOMERS crs_cust INNER JOIN DAY0_SUBSET subset ON crs_cust.CUSTOMER_ID=subset.CURRENT_CUSTOMER_ID; The EXECUTE IMMEDIATE queries in below block are not executing. OPEN c1; LOOP EXIT WHEN c1%NOTFOUND; EXIT WHEN (c1%ROWCOUNT <> p_SCBCount); FOR i in c1 LOOP EXECUTE IMMEDIATE 'UPDATE CRS_CUSTOMERS SET REF_ID = ' |

Android; SQLiteConnection object for database was leaked even closed

由 雨燕双飞 提交于 2019-12-13 20:14:09
问题 In my database helper I have both closed the cursor and database connection, but still the logcat says there's a leak! I have this code in my SQLiteOpenHelper // Getting all entries from database table wp_posts public ArrayList<String> getAllPosts() { // Open the database String path_to_db = context.getDatabasePath(db_name).getPath(); db = SQLiteDatabase.openDatabase(path_to_db, null, SQLiteDatabase.OPEN_READONLY); // Prepare the container array ArrayList<String> postsArrayList = new

Using For loop to retrieve multiple rows in Oracle procedure

由 自作多情 提交于 2019-12-13 18:19:18
问题 Im working on stored procedure where I need to retrieve a set of results and process each element individually and then return the entire result.(using 3 different tables) Im not too familiar with databases, but heres what I was able to come up with.. create or replace procedure GET_EMP_RSLT IS CURSOR ecursor IS select emp_id from temp_employee where 'some condition'; BEGIN FOR empidset in ecursor LOOP Select * from (select * from payroll_info where emp_id = empidset.emp_id) a left join
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