Lowyat.NET: Latest topics by teochevon

How to execute lupdate for multiple Qt projects

teochevon — Wed, 18 Jan 2012 17:26:45 +0800

Hi,

I am developing a QT application and it contains multiple projects and each project has one PRO file.

I am wondering if there is any possibility that with one lupdate command can process multiple PRO file.

Appreciate if you could provide some help/advice.

Obfuscate Qt code

teochevon — Wed, 23 Nov 2011 23:02:59 +0800

Hi, I wonder if we could obfuscate Qt code and how to do it? Please enlighten me.

Ways to hide Ubuntu OS boot messages?

teochevon — Tue, 01 Nov 2011 18:40:26 +0800

Hi,

I'm looking for a way to hide Ubuntu OS boot messages upon bootup and shutdown. What I've done so far is - in /etc/default/grub, I set GRUB_CMDLINE_LINUX_DEFAULT="quiet splash". Significantly it shows lesser messages, but this is not exactly what I want. I need them to be completely removed. I searched through internet I found very very few helpful tricks, most of the people are looking for enabling more messages to display I'm not sure if it's possible. Appreciate if any of you could advise.

p/s: I'm not sure if it's called boot messages. I have PostgreSQL installed in my Ubuntu machine. And it displays lines ""Starting PostgreSQL 8.4 database server" during bootup or shutdown. I'm looking for way to hide this kind of information from the black screen.

Error: 'undefined' is null or not an object

teochevon — Thu, 01 Jul 2010 10:48:56 +0800

Hi peers,

I got the Error: 'undefined' is null or not an object on the second line of code in the js function below when I ran it in VS2010. It works perfectly in VS2K8. I can't find any clue why is it so. Please suggest what can I do.

function rememberme_check(a) {
var Form_1 = document.Form1;
Form_1.action = a;
Form_1.submit();
}

<form id="Form1" method="post" name="Form1" action="">
.....

<a href="javascript:rememberme_check(<url>);">
<span>Log In</span>
</a>

.....
</form>

WTF Vendor who can make Human Tetris

Thu, 01 Jan 1970 07:30:00 +0800

WTF Vendor who can make Human Tetris

teochevon — Mon, 14 Jun 2010 10:26:14 +0800

Hi peers,

Does anyone of you know somebody who can help to make human tetris using big cardboard in Penang area? Please gimme the contact ASAP. I need this game for my company event.

How to display 2 textboxes after a button click

teochevon — Wed, 02 Jun 2010 14:55:26 +0800

Hi peers,

Please enlighten me with example (in JQuery) of how to display 2 textboxes after a button click. I would like to put a Login button in a horizontal bar, once the user clicks it, it will be disappear and 2 textboxes, Username and Password fields together with Go and Cancel buttons will appear in the horizontal bar. If the user clicks Cancel, all these will be replaced by a Login button.

Change view in ASP.NET MVC within one aspx page

teochevon — Mon, 12 Apr 2010 14:45:44 +0800

Hi peers,

As per the subject mentioned, how do we change the view from one to the other within 1 page?

For example,

First time visit the website, there is a top bar (one view ascx) showing Login functionality.

Once you click Login, it will validate, and then if you're a valid user, the top bar will be change to different bar (another view ascx)

Please show me how do we do this in MVC.

Appreciate your help.

tr[@class^=child-]

teochevon — Mon, 05 Apr 2010 13:26:16 +0800

Hi.. I saw this in jquery, can someone help to explain $('tr[@class^=child-]').hide().children('td')?

CODE

$(function() {
$('tr.parent')
.css("cursor", "pointer")
.attr("title", "Click to expand/collapse")
.click(function() {
$(this).siblings('.child-' + this.id).toggle();
});
$('tr[@class^=child-]').hide().children('td');
});

Microsoft JScript runtime error

teochevon — Mon, 05 Apr 2010 13:25:31 +0800

Hi peers, please help in the below. I'm totally new to jQuery. The JS file is the original jquery used in my current project developed by previous developer, now i need to enable collapsing and expanding section for my infoTable and i added the script into the html page, but in runtime it throws me "Microsoft JScript runtime error: Object doesn't support this property or method" with highlighting the js code pasted below. May i know how to debug in jQuery? Or do you know to read the code below and tell me what I should amend? I'd prefer to know how to debug than you tell me what my mistake is. Thanks.

html

CODE

CODE

jQuery

teochevon — Fri, 02 Apr 2010 15:56:41 +0800

Hi can you guys help to explain what's this mean?

CODE

Please let me know if anything could help me to ramp up on this.

<tr> tag

teochevon — Tue, 30 Mar 2010 10:49:07 +0800

Hi peers, please advise the below

a static var being declared in this way:

CODE

private static readonly string _compareFormatStr = "<tr{2}><td>{0}</td>{1}</tr>";

this is the way it being used:

CODE

return string.Format(_compareFormatStr, Resources.ProductFields.ResourceManager.GetString(fieldName), cells, "");

As my understanding,
Resources.ProductFields.ResourceManager.GetString(fieldName) REPRESENTS {0}
cells REPRESENTS {1}
"" REPRESENTS {2}

But what does <tr{x}> means? Anyone seen this before and can explain to me? Thanks

Javascript

teochevon — Mon, 29 Mar 2010 18:22:50 +0800

Hi peers. I'm not very familiar with javascript. Recently I gotta study an existing project source code and I found this
<a href="javascript:{}" onclick="clearCompareQ()" class="button" style="margin:2px 14px;">Clear Queue</a>

May i know what does the "javascript:{}" mean?

Extract MS SQL Server Dump Files

teochevon — Tue, 09 Sep 2008 15:01:44 +0800

Hi. Does anyone here know how to extract the dump files created by MS SQL Server? I need to restore DB with the dump files. But it seems it can only be done with .bak file, too bad I didnt get it. From the results through google, there are tools to extract the dump files but too bad it's not free one..

Print Preview in PDF in Web page

teochevon — Wed, 13 Aug 2008 15:58:45 +0800

Hi May I know how to create a PDF file as for print preview in a web page in VS2003??

Windows Mobile 5.0 Application

teochevon — Mon, 04 Aug 2008 09:46:16 +0800

Is it possible to connect Windows Mobile 5.0 application with Web Services in VS2005? I do not know why it doesnt work and there're some error came out with System.Net.WebException and some other are related to HttpRequest I have tried to consume the Web Services to a web application as well as windows application and it works well, but it just cant work out in Windows Mobile application

How many % of what a drunker said is true?

teochevon — Sun, 08 Jun 2008 17:15:41 +0800

How many % of what a drunker said is true?

XML document as input into stored procedure

teochevon — Mon, 02 Jun 2008 10:10:51 +0800

Hello all. I would like to allow XML document as input into stored procedure. From the examples I've seen throughout the web, mostly XML document will be converted into strings and then only can be pass into stored procedure. And if XML data size is a concern, Text is the best data type for large XML input. Now I would like to know is it the only way to pass XML data into stored procedure? Is it possible to pass whole XML document into the stored procedure without converting it into strings?

No output, no error~ Help!

teochevon — Wed, 28 May 2008 16:14:23 +0800

I dont know what's wrong. My data grid view do not have output

Below is my code:

CODE

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DatabaseConnection;
using System.Data.SqlClient;
using System.Xml;
using System.Collections;

namespace TestDB
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
string strConn = "Data Source=localhost;Initial Catalog=Library;Integrated Security=SSPI";
string strSP="AUTHORS";
string strParams="doc";
XmlDocument xm = new XmlDocument();
xm.Load("Authors.xml");
DataSet ds = new DataSet();
ds=GetDataSetFromSP(strConn, strSP, strParams, xm);
dataGridView1.DataSource=ds;
}

public DataSet GetDataSetFromSP(string strConn, string strSP, string strInputParams, XmlDocument xmlData)
{
SqlConnection conn = null;
SqlCommand cmd = new SqlCommand();
string strXML = xmlData.OuterXml;
try
{
DataSet ds = new DataSet();
conn = new SqlConnection(strConn);
cmd.Connection = conn;

cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = strSP;
// Use AddWithValue to assign strInputParams.
// SQL Server will implicitly convert strings into XML.
cmd.Parameters.AddWithValue("@" + strInputParams, strXML);

SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);

return ds;

}
catch (Exception ex)
{
throw ex;
}
finally
{
cmd.Connection.Close();
}
}
}
}

This is my stored procedure:

CODE

CREATE PROCEDURE AUTHORS @doc varchar(1000) AS
DECLARE @idoc int
EXEC sp_xml_preparedocument @idoc OUTPUT, @doc
SELECT title, au_id
FROM OPENXML (@idoc, '/ROOT/authors',2)
WITH (au_id varchar(11),
au_lname varchar(40),
au_fname varchar(20),
title varchar(20),
phone char(12)
)
EXEC sp_xml_removedocument @idoc

XML data sample:

CODE

<ROOT>
<authors><au_id>172-32-1176</au_id><au_lname>White</au_lname>
<au_fname>Johnson</au_fname><title>book1</title>
<phone>408 496-7223</phone><address>10932 Bigge Rd.</address>
<city>Menlo Park</city><state>CA</state><zip>94025</zip>
<contract>1</contract></authors>
<authors><au_id>213-46-8915</au_id><au_lname>Green</au_lname>
<au_fname>Marjorie</au_fname><title>book2</title>
<phone>415 986-7020</phone><address>309 63rd St.
#411</address><city>Oakland</city><state>CA</state>
<zip>94618</zip>
<contract>1</contract></authors>
</ROOT>

No output, no error~ Help!

teochevon — Wed, 28 May 2008 16:13:59 +0800

I dont know what's wrong. My data grid view do not have output

Below is my code:

CODE

This is my stored procedure:

CODE

XML data sample:

CODE