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  • QListView how to add column ?

    - by Samir
    How can I add columns to QListView control. Found a method addColumn while seardhing, but in my Qt Creator 1.2.1 based on Qt 4.5.2(32 bit) QListView doesn't have such method at all !!! So how would I add columns ? Say I have 3 columns then what is the code to add a row ?

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  • How to convert closed bezier curves to Bitmaps?

    - by Sorush Rabiee
    I need an algorithm to convert a closed bezier curve (perhaps self-crossing) to a binary bitmap: 0 for inside pixels and 1 for outside. I'm writing a code that needs to implement some operations on bezier curves, could anybody give me some resources or tutorials about beziere? Wikipedia and others didn't say anything about optimization, subtracting, union, knot insertion and deletion and other operations :-)

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  • ID/Class Selector

    - by Ionut Staicu
    Hi. I have some kind of problem with jQuery selectors. Let's say i want to select $('#elementID') but the elementID is a variable. There is any other possiblity to do this other way than var variable = elementID; $('#'+variable) ? I mean without specifying the # anywhere else? Thanks!

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  • Define a varbinary(max) column using sqlalchemy on MS SQL Server

    - by Mark Hall
    Hi, I'm querying an SQL Server database using SQLAlchemy and need to cast a column to varbinary(max). The thing I am struggling with is the "max" part. I can get the cast to work for any actual number (say varbinary(20)), but I cannot find how to get it to work for the "max" size of the varbinary column. Any pointers? Links? Solutions? Regards, Mark

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  • Row level user permissions, help with design

    - by bambam
    Hi, Say I am creating a forums application, I understand how to design a forum level permission system with Groups. i.e. you create a forum to group mapping, and assign users to a group to give them access to a particular forum. How can I refine the permissions to allow for row level permissions (or in forum terms, post level).

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  • transactions in MS Access

    - by arcticpenguin
    Let's say I have the following code in a form that is triggered on some click event. DoCmd.SetWarnings False DoCmd.OpenQuery "AddSomeStuff" DoCmd.OpenQuery "UpdateSomeOtherStuff" DoCmd.OpenQuery "DeleteABunchOfCrap" DoCmd.SetWarnings True Can I assume that the three update queries I executed (in SQL Server) are not transactional in that they are run is separate transactions?

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  • Solicit and unsolicit messages/events in window programming?

    - by AKN
    Can someone pls tell me do we have solic & unsolic message/events in MFC or window programming? In devices solic response and unsolic response is said as immediate response (like acknowledgement to commands) and late response (generated without any further commands being sent) respectively. Likewise can we say events as solic / unsolic based on immediate occurrence and late occurrence?

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  • How to convert attribute name to string?

    - by Acidburn2k
    Lets say we have some basic AR model. class User < ActiveRecord::Base attr_accessible :firstname, :lastname, :email end ... some_helper_method(attrib) ... def Now I would like to pass someuser.firstname to helper and I would like to get both the value and the attribute name, for example: some_helper_method(someuser.firstname) > "firstname: Joe" some_helper_method(someuser.lastname) > "lastname: Doe"

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  • Stack Trace of cross-thread exceptions with Invoke

    - by the_lotus
    When an exception happens after calling Invoke, .NET shows the stack trace as if the error happens while calling Invoke. Example below: .NET will say the error happen in UpdateStuff instead of UpdateStuff - BadFunction Is there a way to catch the "real" exception and show the correct stack trace? Private Sub UpdateStuff() If (Me.InvokeRequired) Then Me.Invoke(New UpdateStuffDelegate(AddressOf UpdateStuff)) Return End If Badfunction() End Sub Private Sub BadFunction() Dim o As Object o.ToString() End Sub

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  • comprehensive list of unsafe functions in C

    - by Dervin Thunk
    Hello. I've been looking online unsuccessfully for a comprehensive list of unsafe (dangerous) functions in C (see here for a few). When I say "dangerous" I mean functions like gets or strcopy, but I was wondering if someone has actually compiled a comprehensive list. Thank you. PD: Neil Butterworth, you should abstain from answering my posts. You're seldom helpful.

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  • SQL query for select distinct with most recent timestamp first

    - by Josh
    I have a mysql table with three columns: username, location, timestamp. This is basically a log of user activity of what location they are in and the time that they were there. What I want to do is select a distinct username+location where only the most recent item (by timestamp) is provided. So say the table consists of: tom roomone 2011-3-25 10:45:00 tom roomtwo 2011-3-25 09:00:00 tom roomtwo 2011-3-25 08:30:00 pam roomone 3011-3-25 07:20:23 I would want only these to be selected: tom roomone 2011-3-25 10:45:00 tom roomtwo 2011-3-25 09:00:00

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  • Hosting a database?

    - by user296516
    Hi, I was kinda puzzled by seeing that most hosting plans do offer, say, 12.000 MB disk space and 60 MB Database space... what is the difference between this two and what do I do if I need like a few gigs for a database and only some tens of MB for the rest of the site?

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  • How can I get the nickname and message from raw IRC data in vb.net

    - by Rob
    Well basically I've got a vb.net script connecting to IRC, and I'm working on making it a basic chat system, but I've run into a problem. Say I receive this: :[email protected] PRIVMSG #channel :message I want to grab specific information to output to the user. I want to grab nickname and message How can I go about doing this? I thought about using regex, but I can't figure out how to make regex grab message since there's nothing after it.

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  • Can I 'unmatch' rule programmatically in treetop?

    - by dimus
    Is it possibe to skip a rule validating it using ruby code in treetop? Say there is something like this: rule short_words [a-z]+ { def method1 text_value end ... } end And I want the words size to be from 2 to 5 letters. Can I exit rule if I find that the length of text_value is not between 2 and 5?

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  • Javascript, language files, configuration

    - by johnnyArt
    I'm building a form validation script for one of my sites, and I thought I'd make the error messages international, meaning that depending on the users language I'd give such or such response. What would the best approach be, for loading a configuration file inside of my class? Right now I'm using the following structure for a single language: const config = { 'errorName' : 'error message', 'errorName2' : 'error message', 'errorName2' : 'error message' } And calling it like this of course: config['errorName']. But I don't know how to load those variables from a file, let's say 'lang/en.js'

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  • ASP.NET MVC Binding - Duplicated Messages

    - by Rodrigo Gama
    I'm using ASP.NET MVC Binding Framework. Let's say I have a class Item, that has a mandatory field Id. I am binding a List, and do not want one error message for each element in this list. If more then one error happen when binding the Id field, I want only one message to be added to ModelState and shown to the user. In one sentence: Is there a way to avoid duplicated messages using ASP.NET MVC Binding Framework?

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