cursor

This question already has an answer here: How do I get the (x, y) pixel coordinates of the caret in text boxes? 3 answers I'd like to display a dropdown list in a <textarea> to assist the user in typing certain things. You know this from current IDEs as code completion. As you start typing something, a popup will appear right a the current cursor/caret location and you can navigate it using arrow keys to complete your text input. I know how to get the cursor position in the text string (i.e. the character index of the cursor position) but I do not know how to get the X/Y coordinates (something

I have always heard people saying bad about using cursors and this is especially in Microsoft SQL Server as they are very slow. Is this the case with Cursors on MySQL as well? Does cursors in MySQL reduce performance as well? Can someone please advice on the usage of cursors in MySQL? Most modern databases (including MySQL) are designed to perform set based operations. The problem with cursors is that they perform row based (or procedural) operations. Because of this you will almost always see a performance hits when you are using cursors to do a job that can be done without cursors on a

I believe I need a cursor for loop to go through the street1 column from table test_data. I have a program which needs to test each row from the table. This is what I have so far: cursor c1 is street1 from test_data Begin If Instr(street1, ‘Cnr’, 1) >= 1; Then Newstreetname := Substr(street1, Instr(street1, ‘Cnr’, 1)+3); Else if Instr(street1, ‘PO Box’, 1) >= 1; Then Newstreetname:= Substr(street1, Instr(street1, ‘PO Box’, 1)); Else if REGEXP_ Instr (street1, [\d], 1) = 0; Then Newstreetname:= street1; Else if REGEXP_ Instr (street1, [\d], 1) >= 1; Then Newstreetnumber:= regexp_substr(street1,

I know this may sound to be a duplicate question but trust me it's not. I have referred this question , but was not of much help as I am trying with a console application and the answerer himself tells he does not know the reason why ShowCursor(FALSE) does not work for console applications. This thread did not help me either. Here are the things I tried: Using ShowCursor(): while(ShowCursor(false)>=0); //did not work I first suspected that it was because of this statement in the msdn : When Windows starts up, it checks if you have a mouse. If so, then the cursor show count is initialized to

 之前整理过一篇有关绑定变量的文章，不太详细，重新补充一下。 Oracle 绑定变量 http://www.cndba.cn/Dave/article/1275 一．绑定变量 bind variable ： A variable in a SQL statement that must be replaced with a valid value, or the address of a value, in order for the statement to successfully execute. 变量绑定是 OLTP 系统中一个非常值得关注的技术。良好的变量绑定会使 OLTP 系统数据库中的 SQL 执行速度飞快，内存效率极高；不使用绑定变量可能会使 OLTP 数据库不堪重负，资源被 SQL 解析严重耗尽，系统运行缓慢。 当一个用户与数据库建立连接后，会向数据库发出操作请求，即向数据库送过去 SQL 语句。 Oracle 在接收到这些 SQL 后，会先对这个 SQL 做一个 hash 函数运算，得到一个 Hash 值，然后到共享池中寻找是否有和这个 hash 值匹配的 SQL 存在。 如果找到了， Oracle 将直接使用已经存在的 SQL 的执行计划去执行当前的 SQL ，然后将结果返回给用户。 如果在共享池中没有找到相同 Hash 值的 SQL ， oracle

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Assuming there is a mousestop event attached to the entire document, what is the best way to figure out the exact word under the cursor (if there is any text), when the mouse stops moving? I can get the underlying (jQuery) element from the event handler - $(document.elementFromPoint(e.clientX, e.clientY)) - but then what is next? So far my idea is to replace all text nodes within hit element with their copy where each word is wrapped in a DOM element (don't know which one yet) and then call $(document.elementFromPoint(e.clientX, e.clientY))

I need to be able to set the mouse location to the middle of the screen/window. How can I do that? The documentation seems to indicate that CGDisplayMoveCursorToPoint or CGWarpMouseCursorPosition will do what you're after. EDIT: To match your latest comment, I would further recommend CGWarpMouseCursorPosition , about which the docs state: For example, this function is often used to move the cursor position back to the center of the screen by games that do not want the cursor pinned by display edges. I was working on something like that last week. CGEventSourceRef source = CGEventSourceCreate

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have strange problem with android database and cursors. Time to time (very rarely) happens, that I got crash report from customers. It's hard to find out why it crashes, as I have ~ 150 000 active users and maybe 1 report per week or so, so it's really some minor bug. Here is exception: STACK_TRACE=java.lang.IllegalStateException: Cannot perform this operation because the connection pool has been closed. at android.database.sqlite.SQLiteConnectionPool.throwIfClosedLocked(SQLiteConnectionPool.java:962) at android.database.sqlite