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  • Getting empty update rectangle in OnPaint after calling InvalidateRect on a layered window

    - by Shawn
    I'm trying to figure out why I've been getting an empty update rectangle when I call InvalidateRect on a transparent window. The idea is that I've drawn something on the window (it gets temporarily switched to have an alpha of 1/255 for the drawing), and then I switch it to full transparent mode (i.e. alpha of 0) in order to interact with the desktop & to be able to move the drawing around the screen on top of the desktop. When I try to move the drawing, I get its bounding rectangle & use it to call InvalidateRect, as such: InvalidateRect(m_hTarget, &winRect, FALSE); I've confirmed that the winRect is indeed correct, and that m_hTarget is the correct window & that its rectangle fully encompasses winRect. I get into the OnPaint handler in the class corresponding to m_hTarget, which is derived from a CWnd. In there, I create a CPaintDC, but when I try to access the update rectangle (dcPaint.m_ps.rcPaint) it's always empty. This rectangle gets passed to a function that determines if we need to update the screen (by using UpdateLayeredWindow in the case of a transparent window). If I hard-code a non-empty rectangle in here, the remaining code works correctly & I am able to move the drawing around the screen. I tried changing the 'FALSE' parameter to 'TRUE' in InvalidateRect, with no effect. I also tried using a standard CDC, and then using BeginPaint/EndPaint method in my OnPaint handler, just to ensure that CPaintDC wasn't doing something odd ... but I got the same results. The code that I'm using was originally designed for opaque windows. If m_hTarget corresponds to an opaque window, the same set of function calls results in the correct (i.e. non-empty) rectangle being passed to OnPaint. Once the window is layered, though, it doesn't seem to work right.

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  • To share a table or not share?

    - by acidzombie24
    Right now on my (beta) site i have a table called user data which stores name, hash(password), ipaddr, sessionkey, email and message number. Now i would like the user to have a profile description, signature, location (optional) and maybe other things. Should i have this in a separate mysql table? or should i share the table? and why?

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  • PHP Check slave status without mysql_connect timeout issues

    - by Jonathon
    I have a web-app that has a master mysql db and four slave dbs. I want to handle all (or almost all) read-only (SELECT) queries from the slaves. Our load-balancer sends the user to one of the slave machines automatically, since they are also running Apache/PHP and serving webpages. I am using an include file to setup the connection to the databases, such as: //for master server (i.e. - UPDATE/INSERT/DELETE statements) $Host = "10.0.0.x"; $User = "xx"; $Password = "xx"; $Link = mysql_connect( $Host, $User, $Password ); if( !$Link ) ) { die( "Master database is currently unavailable. Please try again later." ); } //this connection can be used for READ-ONLY (i.e. - SELECT statements) on the localhost $Host_Local = "localhost"; $User_Local = "xx"; $Password_Local = "xx"; $Link_Local = mysql_connect( $Host_Local, $User_Local, $Password_Local ); //fail back to master if slave db is down if( !$Link_Local ) ) { $Link_Local = mysql_connect( $Host, $User, $Password ); } I then use $Link for all update queries and $Link_Local as the connection for SELECT statements. Everything works fine until the slave server database goes down. If the local db is down, the $Link_Local = mysql_connect() call takes at least 30 seconds before it gives up on trying to connect to the localhost and returns back to the script. This causes a huge backlog of page serves and basically shuts down the system (due to the extremely slow response time). Does anyone know of a better way to handle connections to slave servers via PHP? Or, is there some kind of timeout function that could be used to stop the mysql_connect call after 2-3 seconds? Thanks for the help. I searched the other mysql_connect threads, but didn't see any that addressed this issue.

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  • How to delete from table if count is greater than 20

    - by joseph
    Hi, I have a mysql table that I need to only contain 20 newest records before adding additional records. New rows are added daily so I would like it first delete any records that are greater than the 20 allowed starting with the earliest. The table contains an auto increment "id" column so I can easily determine which is the earliest records. Thanks for any help.

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  • Free java or flash file browser for photogallery

    - by Christian
    Hi. I'm about to develop a small web gallery, where it's supposed to be possible to upload several pictures at a time and then add some info abut the pictures.So I need a free java or flash local file browser that can pass me some info of the pictures that gets uploaded so that I can create some SQL entries for each picture. The platform for the project will be PHP and MySQL. Any good recommendations?

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  • Max value amongst 4 columns in a row.

    - by KandadaBoggu
    I have test_scores table with following fields: Table schema: id (number) score1 (number) score2 (number) score3 (number) score4 (number) Sample data: id score1 score2 score3 score4 1 10 05 30 50 2 05 15 10 00 3 25 10 05 15 Expected result set: id col_name col_value 1 score4 50 2 score2 15 3 score1 25 What is a good SQL for this?(I am using MySQL.)

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  • Effective way to calculate a similarity percentage between data sets

    - by UltraVi01
    I am currently working with User objects -- each of which have many Goal objects. The Goal objects are not User specific, that is, Users can share the same Goal. I am attempting to fashion a way to calculate a "similarity percentage" between two Users... (i.e., taking into account how many Goals they share as well as how many Goals they do not share) Does anyone have experience with this type of situation? I am using Grails with Mysql if that is helpful. Thanks

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  • SQL time issue - need it 6 hours forward!

    - by Luke
    My server is currently based on us eastern time, and as I am in the UK, i need to move this forward 6 hours. When using now() in mysql, i am getting the wrong time, is there anything i can add to now() to bring it forward 6 hours? Thanks

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  • Generate table schema inspecting Excel(CSV) and import data

    - by Frank Malina
    How would I go around creating a MYSQL table schema inspecting an Excel(or CSV) file. Are there any ready Python libraries for the task? Column headers would be sanitized to column names. Datatype would be estimated based on the contents of the spreadsheet column. When done, data would be loaded to the table. I have an Excel file of ~200 columns that I want to start normalizing.

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  • Transmogrify into date from multiple columns

    - by Dave Jarvis
    What is a better way to program the following SQL: str_to_date( concat(convert(D.DAY, CHAR(2)), '-', convert(M.MONTH, CHAR(2)), '-', convert(M.YEAR, CHAR(4))), '%e-%m-%Y' ) as AMOUNT_DATE I want to convert the columns D.DAY, M.MONTH, and M.YEAR to a date field using MySQL. The above works, but seems much more complicated than it needs to be. (If there's an ANSI SQL way to do it, that would be even better.) Thank you!

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  • WHERE vs HAVING

    - by baloo
    Why is it that you need to place columns you create yourself (for example "select 1 as number") after HAVING and not WHERE in MySQL? And are there any downsides instead of doing "WHERE 1" (writing the whole definition instead of a column name)

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  • Regex in javascript for enum datatype of mysql

    - by himadri
    Hello, I am working with php and mysql. I have one dropdown box where I am asking datatype of mysql field. Now, I want to put javascript validation for it. I am confused with the enum datatype. I am using regular expression /^[']{1}[^',^\\]+[']{1}$/. This is for one single value of enum values. It is working fine but issue is when I put single quote or backslash with backslash, it is valid but this regular expression shows it as invalid. For eg, 'a'b' is invalid but 'a\'b' is valid.

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  • What should every PHP programmer know ?

    - by Waseem
    I would to be a PHP/Mysql Programmer what is the technologies that i must know ? Like :- Frameworks IDEs Template Engines Ajax and Css Frameworks please tell me the minimum requirements that i must know , and tell me your favourite things in the previous list ? thanks

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  • How to create a database binding using Windows Builder Pro?

    - by Tiago
    For the first time, I'm creating a Java Swing application. I'm using Windows Builder Pro in Eclipse, and a MySQL database (already setup up). Let's say I have a combo box, and I want (for instance) all 'name' fields from a 'certain' table appear. How can I setup that binding? I know how to programatically handle the connection and query code, what I would like to know is how to make that binding in Eclipse.

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  • How much does an InnoDB table benefit from having fixed-length rows?

    - by Philip Eve
    I know that dependent on the database storage engine in use, a performance benefit can be found if all of the rows in the table can be guaranteed to be the same length (by avoiding nullable columns and not using any VARCHAR, TEXT or BLOB columns). I'm not clear on how far this applies to InnoDB, with its funny table arrangements. Let's give an example: I have the following table CREATE TABLE `PlayerGameRcd` ( `User` SMALLINT UNSIGNED NOT NULL, `Game` MEDIUMINT UNSIGNED NOT NULL, `GameResult` ENUM('Quit', 'Kicked by Vote', 'Kicked by Admin', 'Kicked by System', 'Finished 5th', 'Finished 4th', 'Finished 3rd', 'Finished 2nd', 'Finished 1st', 'Game Aborted', 'Playing', 'Hide' ) NOT NULL DEFAULT 'Playing', `Inherited` TINYINT NOT NULL, `GameCounts` TINYINT NOT NULL, `Colour` TINYINT UNSIGNED NOT NULL, `Score` SMALLINT UNSIGNED NOT NULL DEFAULT 0, `NumLongTurns` TINYINT UNSIGNED NOT NULL DEFAULT 0, `Notes` MEDIUMTEXT, `CurrentOccupant` TINYINT UNSIGNED NOT NULL DEFAULT 0, PRIMARY KEY (`Game`, `User`), UNIQUE KEY `PGR_multi_uk` (`Game`, `CurrentOccupant`, `Colour`), INDEX `Stats_ind_PGR` (`GameCounts`, `GameResult`, `Score`, `User`), INDEX `GameList_ind_PGR` (`User`, `CurrentOccupant`, `Game`, `Colour`), CONSTRAINT `Constr_PlayerGameRcd_User_fk` FOREIGN KEY `User_fk` (`User`) REFERENCES `User` (`UserID`) ON DELETE CASCADE ON UPDATE CASCADE, CONSTRAINT `Constr_PlayerGameRcd_Game_fk` FOREIGN KEY `Game_fk` (`Game`) REFERENCES `Game` (`GameID`) ON DELETE CASCADE ON UPDATE CASCADE ) ENGINE=INNODB CHARACTER SET utf8 COLLATE utf8_general_ci The only column that is nullable is Notes, which is MEDIUMTEXT. This table presently has 33097 rows (which I appreciate is small as yet). Of these rows, only 61 have values in Notes. How much of an improvement might I see from, say, adding a new table to store the Notes column in and performing LEFT JOINs when necessary?

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  • case insensitive for sql LIKE wildcard statement

    - by David Morrow
    sorry if this is a repeat, i looked around some and didnt find what i was after so here goes SELECT * FROM trees WHERE trees.`title` LIKE '%elm%' this works fine, but not if the tree is named Elm or ELM ect... how do i make sql case insensitive for this wild-card search? again apologies if this is repeated. oh, using MySql 5 on apache

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  • fetch fourth maximum record from the table field

    - by chetan
    Following is the command to fetch maximum salary form empsalary table in mysql select max(salary) from empsalary; but I want to fetch employee who got fourth highest from the list of employee. I don't want to use trigger or function because I know there is direct command to fetch.

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  • ADO.NET connection string and password with "=" in it

    - by Philippe Leybaert
    How do I build a connection string which includes a passsword having a "=" in it? (I'm connecting to MySql 5.1) For example, let's say the password is "Ge5f8z=6", what would the connection string look like? I tried: Server=DBSERV;Database=mydb;UID=myuser;PWD="Ge5f8z=6"; and Server=DBSERV;Database=mydb;UID=myuser;PWD=Ge5f8z=6;" Both don't work.

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  • Different values for Time.now when using activerecord

    - by Josué Lima
    I have this weird situation: When I do on rails console Time.now or Time.zone.now I get the same values (suppose they run at the sime time: 2014-06-05 23:38:06 -0300) But when I use Time.now in a query like: Match.where("datetime = ?", Time.now) it returns the time 3 hours ahead! .to_sql output: SELECT `matches`.* FROM `matches` WHERE (datetime = '2014-06-06 02:38:06') any thoughts on that? Rails 4 Mysql 5.5

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  • sql query returns incorrect result

    - by reza saberi
    I have a mysql database that stores quotation documents with some products that are clearly defining the price of each product in them, and a table for contracts storing contract details as well as customer code and quotation code to which it belongs. I have the following query to see how much is the total price of the quotation to write it in the invoice: select sum(sqproducts.price * sqproducts.quantity) as 'total-price', squotations.currency as 'currency' from sqproducts, ccontracts, squotations where sqproducts.contracted=1 AND squotations.code=sqproducts.quotation_code AND sqproducts.quotation_code=ccontracts.squotation_code AND sqproducts.quotation_code='QUOT/2012/1' group by currency

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