The data I needed contained translations. I have a table for elements and a table for translations, and each translation can be used by multiple elements.

mysql> SELECT elementname, LANGUAGE, translation, elements.translationid 
FROM elements 
	INNER JOIN translations ON translations.translationid = elements.translationid 
WHERE elements.translationid 
	BETWEEN 24 AND 25;
+-------------+----------+-------------------+---------------+
| elementname | LANGUAGE | translation       | translationid |
+-------------+----------+-------------------+---------------+
| PrevWeek    | de-DE    | Vorherige Woche   |            24 |
| PrevWeek    | en-GB    | Previous Week     |            24 |
| PrevWeek    | es-ES    | Semana anterior   |            24 |
| PrevWeek    | nl-NL    | Vorige week       |            24 |
| PrevWeek    | ro-RO    | Saptamana trecuta |            24 |
| PrevMonth   | cs-CZ    | Předchozí rok   |            25 |
| PrevMonth   | de-DE    | Vorheriger Monat  |            25 |
| PrevMonth   | el-GR    | Προηγ. Ετος|            25 |
| PrevMonth   | en-GB    | Previous Month    |            25 |
| PrevMonth   | es-ES    | Año anterior     |            25 |
| PrevMonth   | fr-FR    | Préc. An         |            25 |
| PrevMonth   | it-IT    | Anno prec.        |            25 |
| PrevMonth   | nl-NL    | Vorig jaar        |            25 |
| PrevMonth   | pl-PL    | Poprzedni rok     |            25 |
| PrevMonth   | pt-PT    | Ano anterior      |            25 |
| PrevMonth   | ro-RO    | Luna trecuta      |            25 |
| PrevMonth   | ru-RU    | Предыдущий год|            25 |
| PrevMonth   | sl-SI    | Prejšnje leto    |            25 |
| PrevMonth   | sv-SE    | Föreg. År       |            25 |
| PrevMonth   | tr-TR    | րnceki Yýl      |            25 |
| PrevMonth   | zh-Hans  | 上一年         |            25 |
+-------------+----------+-------------------+---------------+
21 rows IN SET

Each translation is grouped logically by the translationid, so I really needed one row for each language and columns for each language.

This would be simpler if there were a standard set of languages used by every application in the database, but there can be any combination of the user’s choice which makes it slightly more difficult. I’m actually storing the languages used for each application in a separate table so I know which columns to expect.

The syntax for the final query is below:

mysql> SELECT elementname, LANGUAGE, elements.translationid,
MAX(IF(LANGUAGE='cs-CZ',translation,NULL)) AS 'cs-CZ', 
MAX(IF(LANGUAGE='de-DE',translation,NULL)) AS 'de-DE', 
MAX(IF(LANGUAGE='el-GR',translation,NULL)) AS 'el-GR', 
MAX(IF(LANGUAGE='en-GB',translation,NULL)) AS 'en-GB', 
MAX(IF(LANGUAGE='es-ES',translation,NULL)) AS 'es-ES', 
MAX(IF(LANGUAGE='fr-FR',translation,NULL)) AS 'fr-FR', 
MAX(IF(LANGUAGE='it-IT',translation,NULL)) AS 'it-IT', 
MAX(IF(LANGUAGE='nl-NL',translation,NULL)) AS 'nl-NL', 
MAX(IF(LANGUAGE='pl-PL',translation,NULL)) AS 'pl-PL', 
MAX(IF(LANGUAGE='pt-PT',translation,NULL)) AS 'pt-PT', 
MAX(IF(LANGUAGE='ro-RO',translation,NULL)) AS 'ro-RO', 
MAX(IF(LANGUAGE='ru-RU',translation,NULL)) AS 'ru-RU', 
MAX(IF(LANGUAGE='sl-SI',translation,NULL)) AS 'sl-SI', 
MAX(IF(LANGUAGE='sv-SE',translation,NULL)) AS 'sv-SE', 
MAX(IF(LANGUAGE='tr-TR',translation,NULL)) AS 'tr-TR', 
MAX(IF(LANGUAGE='zh-Hans',translation,NULL)) AS 'zh-Hans'
FROM elements 
INNER JOIN translations 
	ON translations.translationid = elements.translationid
WHERE elements.translationid 
	BETWEEN 24 AND 25
GROUP BY elements.translationid;
+-------------+----------+---------------+---------------+------------------+-------------+----------------+-----------------+----------+------------+-------------+---------------+--------------+-------------------+----------------+---------------+-----------+------------+---------+
| elementname | LANGUAGE | translationid | cs-CZ         | de-DE            | el-GR       | en-GB          | es-ES           | fr-FR    | it-IT      | nl-NL       | pl-PL         | pt-PT        | ro-RO             | ru-RU          | sl-SI         | sv-SE     | tr-TR      | zh-Hans |
+-------------+----------+---------------+---------------+------------------+-------------+----------------+-----------------+----------+------------+-------------+---------------+--------------+-------------------+----------------+---------------+-----------+------------+---------+
| PrevWeek    | de-DE    |            24 | NULL          | Vorherige Woche  | NULL        | Previous Week  | Semana anterior | NULL     | NULL       | Vorige week | NULL          | NULL         | Saptamana trecuta | NULL           | NULL          | NULL      | NULL       | NULL    |
| PrevMonth   | cs-CZ    |            25 | Předchozí rok | Vorheriger Monat | Προηγ. Ετος | Previous Month | Año anterior    | Préc. An | Anno prec. | Vorig jaar  | Poprzedni rok | Ano anterior | Luna trecuta      | Предыдущий год | Prejšnje leto | Föreg. År | րnceki Yýl | 上一年    |
+-------------+----------+---------------+---------------+------------------+-------------+----------------+-----------------+----------+------------+-------------+---------------+--------------+-------------------+----------------+---------------+-----------+------------+---------+
2 rows IN SET

This magical query will first group by rows with a common translationid, then show each language as it’s own row. If no translation for a certain translationid in a certain language exists, a null is used.

With crosstab queries it’s also possible to use use the data in the table to create your columns and to use SQL functions for the values of columns, this lets you do thing like keep running totals and averages.

The following links are good resources for more information on crosstab queries:

• MySQL Wizardry
• Creating crosstabs in MySQL
• Dynamic crosstabs using MySQL stored procedures

Hardcoding the name of the placeholder would be a bad idea incase you ever change the name of it or change the master page. There are actually two ways you can get at the controls.

The first way, which works if you just need access to the value posted involves looping through Request.Form.AllKeys to find the name of the control.

string appName = string.Empty;
foreach(string key in Request.Form.AllKeys) {
  if(key.endsWith("radApplication")) {
    appName = Request.Form[key];
  }
}

While this works, it could break if there were several controls with similar names on the page. The second method uses the PreviousPage property to provide a reference to the actual control.

ContentPlaceHolder previous = (ContentPlaceHolder)PreviousPage.Master.FindControl("cntMain");
string projectID = (previous.FindControl("radApplication") as RadioButtonList).SelectedValue;

The benefit of getting a reference to the actual control is that you can see more than just the value submitted on the form.

The full specification for the URL it constructs is protocol://user:password@host:port/direc/tory/file?query#ref. Any parts left blank are assumed to be wildcards. Performance averages out to about 0.05ms per check, not bad for a beefy regex.

Just the constructor is listed here, the full source is available at http://leghumped.com/WildcardURL.java.

public WildcardURL(String url) {
	HashMap<String, String> tempUri = new HashMap<String, String>(14);
	String[] parts = {"source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","ref"};
	boolean strictMode = false;
	Pattern pattern;
	if(strictMode) {
		pattern = Pattern.compile("^(?:([^:/?#]+):)?(?://((?:(([^:@]*):?([^:@]*))?@)?([^:/?#]*)(?::(\\d*))?))?((((?:[^?#/]*/)*)([^?#]*))(?:\\?([^#]*))?(?:#(.*))?)");
	} else {
		pattern = Pattern.compile("^(?:(?![^:@]+:[^:@/]*@)([^:/?#.]+):)?(?://)?((?:(([^:@]*):?([^:@]*))?@)?([^:/?#]*)(?::(\\d*))?)(((/(?:[^?#](?![^?#/]*\\.[^?#/.]+(?:[?#]|$)))*/?)?([^?#/]*))(?:\\?([^#]*))?(?:#(.*))?)");
	}
	Matcher matcher = pattern.matcher(url);
	String match;
	if(matcher.find()) {
		for(int i=0;i<14;i++) {
			try {
				match = matcher.group(i);
			} catch(Exception ex) {
				match = "*";
			}
			tempUri.put(parts[i],  match == null ? "*" : match);
		}
	}
	this.protocol = tempUri.get("protocol");
	this.user = tempUri.get("user");
	this.password = tempUri.get("password");
	this.host = tempUri.get("host");
	this.directory = tempUri.get("directory");
	this.file = tempUri.get("file");
	this.query = tempUri.get("query");
	this.ref = tempUri.get("ref");
	try {
		this.port = Integer.parseInt(tempUri.get("port"));
	} catch(NumberFormatException ignore) {}
}

You can test it with the method below.

public static void wildcardURLs() {
	String[] currentURLs = {
		"http://www.lime49.com/",
		"http://lime49.com/",
		"http://lime49.com/blah",
		"ftp://ftp.lime49.com/",
		"ftp://lime49.co.uk/",
		"http://user@www.lime49.com:81/search.php?q1=test1",
		"http://user:pwd@www.lime49.com:81/search/for/search.php?q1=0&&test1&test2=value#top"
	};
	String[] accountURLs = {
		"*://www.lime49.com",
		"*://*lime49.com",
		"*://*.lime49.com/blah",
		"http://www.lime49.com/blah",
		"http://*.lime49.com/blah",
		"http://*.com/blah",
		"http://*lime49*/blah",
		"http://www.lime49.com:81/search/for/search.php",
		"*://*",
		"lime49",
		"",
	};
	URL currentURL;
	for(int i=0;i<currentURLs.length;i++) {
		try {
			System.out.println("Testing "+currentURLs[i]);
			currentURL = new URL(currentURLs[i]);
			System.out.println("Current URL\t\tAccount URL\t\tMatch");
			for(String accountURL : accountURLs) {
				System.out.print(currentURLs[i]+"\t\t"+accountURL+"\t\t");
				try {
					System.out.println(new WildcardURL(accountURL).matches(currentURL));
				} catch(Exception ex2) {
					System.out.println("Error parsing:"+accountURL);
				}
			}
		} catch(Exception ex) {
			System.out.println("Error parsing:"+currentURLs[i]);
		}
		System.out.println("\n");
	}
 
	long start = System.currentTimeMillis();
	int i;
	for(i = 0;i<2000;i++) {
		for(int j=0;j<currentURLs.length;j++) {
			try {
				currentURL = new URL(currentURLs[j]);
				for(String accountURL : accountURLs) {
					try {
						if(new WildcardURL(accountURL).matches(currentURL)) {
 
						};
					} catch(Exception ex2) {}
				}
			} catch(Exception ex) {}
		}
	}
	long millis = System.currentTimeMillis()-start;
	int numChecks = (i*currentURLs.length*accountURLs.length);
	System.out.println("Completed "+numChecks+" match checks in "+millis+"ms - Avg = "+new java.math.BigDecimal((millis/(double)numChecks)).setScale(3,java.math.BigDecimal.ROUND_HALF_UP)+"ms/check");
}

As it is, it will add all files the the extension nds in the current directory to a new subdirectory called zipped.

@echo off
SET winrar="C:\Program Files\WinRAR\winrar.exe"
SET sourcedir=%cd%
SET outputdir=%cd%\zipped
IF NOT EXIST "%outputdir%" mkdir "%outputdir%"
for /F "delims=" %%i in ('dir /b *.nds') do (%winrar% a -s -m5 -inul "%outputdir%\%%~nxi.rar" "%%i")

The package is lime49.lockcrypt, and the file is located in the build path. As it happens I was loading a Chinese font.

InputStream in = LockCrypt.class.getClassLoader().getResourceAsStream("lime49/lockcrypt/fireflysung.ttf");
Font font = Font.createFont(Font.TRUETYPE_FONT, in);

One of the more annoying things about Movable type is the URL structure it uses by default. Everything is statically published by default, which works quite well and isn’t a problem in itself, but there’s something about seeing a .html or .php extension which makes a site look amateurish.

There’s an easy way to change Movable Type to use permalinks like http://leghumped.com/post-name instead of http://leghumped.com/2008/09/post-name.html

1. To disable the extensions and make your permalinks prettier, you’ll need to first edit (or create) a .htaccess file in the root of your web directory and add the following lines:

   DefaultType application/x-httpd-php

   So if your site is leghumped.com, copy and paste those lines into leghumped.com/.htaccess. This causes all files without extensions to be served as PHP.

2. Login to Movable Type and go to Preferences->Publishing, then remove everything in the File Extension box. This makes MovableType save pages without an extension, so they can be served as PHP by Apache.

3. Optional: For my purposes, having the date in entry posts isn’t really necessary, so to just use the post name instead go to Manage->Templates->Entry and expand the Template Options section at the bottom. Select Custom from the list and change the mapping to %-f.

4. This will let you use the filename without the PHP extension to access files, but permalinks generated by Movable Type will still include the PHP extension. To change that, add regex="s/\.php$//" to all links generated by MT. Eg: Instead of <$mt:EntryPermalink$>, use <$mt:EntryPermalink regex="s/\.php$//"$>.

Although DreamHost have a simple form for setting up a new repository and they make regular backups incase a hard drive fails, I still have a lingering fear of losing all of my source code. Luckily, DreamHost also offer SSH access and allow you to setup cron jobs to backup your data yourself. This guide provides instructions for creating a shell script to backup, compress, email and restore your SVN repository.

The tools you'll need to export a repository are svnadmin, tar, split, mutt - an email client, and optionally crontab.

1. The first thing you need to do is create a shell script to do the backing up. This can either be done from Windows, then uploaded to your home directory, or from a terminal using nano or vi.

   #!/bin/sh
    
   ###################
   REPO=myreponame
   BACKUPADDR=backup@mydomain.com
   ###################
    
   # Clean up any failed attempts and create a temporary directory for the backup
   rm -rf $HOME/svnbackup/
   mkdir $HOME/svnbackup
   cd $HOME/svnbackup
    
   # dump the repository
   svnadmin dump $HOME/svn/$REPO > $REPO.dump
   tar -cf - $REPO.dump | gzip > svn-$REPO$(date +\%Y\%m\%d).tar.gz
   split --bytes=15m svn-$REPO$(date +\%Y\%m\%d).tar.gz svn-$REPO$(date +\%Y\%m\%d).tar.gz.
   ls svn-$REPO$(date +\%Y\%m\%d).tar.gz.* | mutt -s "Backup - SVN $REPO ($(date +\%Y\%m\%d)) - Summary" -n -F /dev/null $BACKUPADDR
   for file in `ls svn-$REPO$(date +\%Y\%m\%d).tar.gz.*`
   do
   echo "" | mutt -a $file -s "Backup - SVN $REPO ($(date +\%Y\%m\%d)) - $file" -n -F /dev/null $BACKUPADDR
   done
    
   # remove the temporary directory
   rm -rf $HOME/svnbackup/

   The text at the start of the file needs to be changed to reflect the name of the repository to be backed up and the address to which to email the backup.

2. Save the file as svnbackup.sh. I'll assume that the majority of users aren't linux gurus, so I'll leave it up to you to create the file and upload it.

   This script will first dump the whole repository, including all revisions and branches. The file created by the svnadmin tool can be in excess of 300Mb, depending on the size of your project. Emailing it as it is would use a ton of your bandwidth, so it'ts first compressed using tar.

   I use Google Hosted for my email, which is set to filter any emails to backup@mydomain.com into a separate folder to keep things tidy. The problem with this is that Google currently impose a 20Mb attachment size limit, so if you send a 90Mb attachment the email will just get bounced back to the sender. To get around this I use the split utility and a for loop to split the compressed repository and email each file separately. If you use the script as it is, you'll also get a message with the names of all of the created files, so if one times out while sending you'll know there’s one missing.

   

3. Upload the file to your home directory (the default directory when you connect via FTP with the default account), then open an SSH session to continue. The best tool for this is Putty.

4. When you've connected via SSH, you need to make the backup script executable. From Putty, type chmod a+x ./svnbackup.sh.

5. If everything was set up correctly, you should be able to run the file as needed by connecting via SSH then typing ./svnbackup.

   The script can be modified to backup multiple repositories if necessary.

6. It's a nice convenience to run backups automatically, and DreamHost also let you run cron jobs so there's no reason not to. Linux includes a task scheduler called crontab, which you can use to schedule the script to run automatically. From an SSH terminal, type crontab -e to edit your crontab.

7. The syntax for crontab is minute, hour, day, month, dayofweek, so on a new line type 37 9 1 * * $HOME/svnbackup.sh to run the script at 9:37 on the first day of every month.

Backing up an entire Subversion repository creates large files that use up your bandwidth allowance, so use the script sparingly. Of course having a compressed dump of a repository isn't much good if you can't restore it in the event of a problem. once you have the files archived somewhere, if the repository gets corrupted or the SVN server dies, you can rejoin the files and use the svnadmin tool to load the backup into an existing repository.

1. To restore an SVN backup, you first need to rejoin the files and unzip them. From the command line, type cat svn-myrepository.tar.gz.aa svn-myrepository.tar.gz.bb > svn-myrepository.tar.gz adding all of the files delivered to the address you set in the script.

2. Unzip the archive with tar xvzf svn-myrepository.tar.gz.

3. Import the backup into an existing repository (which should be empty) using svnadmin load /path/to/repository < /path/to/svn-file.dump. The process takes a while but you should have an exact copy of your original repository when it's done.

The dialog is just a form with a ComboBox which shows the current directory and all of it’s parents, a ListView which shows the files and directories in the current directory, and a text box to show the selected file.

Instantiate it with either the default constructor or a directory and file to show on startup.

FileInfo dbFile = new FileInfo("\\Storage Card\\Somefile.txt");
Lime49.OpenFileDialog dlg = new Lime49.OpenFileDialog(dbFile.DirectoryName, dbFile.Name);
dlg.Filter = "*.txt";
dlg.ShowDirectory(dbFile.DirectoryName);
dlg.ShowDialog();
MessageBox.Show(dlg.SelectedFile);

The selected file is available through the SelectedFile property, and the filter doesn’t work the same way as standard FileDialogs, it uses a standard wildcard pattern to list files.

Download Lime49.OpenFileDialog
Also published on CodeProject

To be able to drag a user control, the control has to call the DoDragDrop method. The logical way to do this is by tracking the state of the left mouse button. If the left button is pressed and the mouse moves, start the drag/drop.

private bool isDragging = false;
...
private void userControl_MouseDown(object sender, MouseEventArgs e) {
    this.isDragging = true;
};
private void userControl_MouseUp(object sender, MouseEventArgs e) {
    this.isDragging = false;
};
private void userControl_MouseLeave(object sender, EventArgs e) {
    isDragging = false;
};
private void userControl_MouseMove(object sender, MouseEventArgs e) {
    if(isDragging) {
        DoDragDrop(userControl, DragDropEffects.Move);
    }
};

There are three delegates assigned to listen to events. When the mouse is pressed a flag is set, when it's released, the flag is unset. If the mouse moves while the mouse is pressed, a drag and drop operation is started. The flag is also unset when the mouse moves out of the control's bounds. This stops the operation from being restarted when the mouse re-enters the control after dropping elsewhere. Once you have the data, the rest of the drop is the same.

Another thing which is useful is changing the operation based on the state of the Ctrl and Shift keys. Depending on the application, different combinations of shift and ctrl are used to copy, move or link when dragging.

To obtain the state of the keys, you'll need to use P/Invoke. Thanks pinvoke.net for the method signatures.

[DllImport("user32.dll")]
protected static extern short GetAsyncKeyState(int vKey);
 
private void userControl_MouseMove(object sender, MouseEventArgs e) {
    if(isDragging) {
        if(GetAsyncKeyState((int)Keys.ShiftKey) < 0 || GetAsyncKeyState((int)Keys.ControlKey) < 0) {
            DoDragDrop(this, DragDropEffects.Copy);
        } else {
            DoDragDrop(this, DragDropEffects.Move);
        }
    }
};

Then you'll also need to check the state in the DragEnter listener in the control where the data can be dropped.

The first example I want to cover is dragging between a ListView and TreeView. This could be used to make re-arranging things easier. Eg: If you're displaying categories in a tree and items in a list.

1. First you need to start a drag and drop operation when a ListViewItem is dragged from the ListView. Do this by assigning a delegate to listen for the ItemDrag event.

   listView1.ItemDrag += delegate(object sender, ItemDragEventArgs e) {
     List<string> itemIDs = new List<string>((sender as ListView).SelectedItems.Count);
     foreach(ListViewItem item in (sender as ListView).SelectedItems) {
       itemIDs.Add(item.Name);
     }
     (sender as ListView).DoDragDrop(itemIDs.ToArray(), DragDropEffects.Move);
   };

   This iterates through all selected items in the ListView and adds them to an array for later processing.

2. Data can only be dropped onto the TreeView if it's set to accept drops, so set it's AllowDrop property to True.

3. This will start a drag and drop operation when you drag an item in the ListView, but if you try to run the code, you'll get a not allowed cursor because the TreeView doesn't know how to handle drop events yet.

4. Now you need to set a drag effect when the cursor moves over the Tree.

   treeView1.DragEnter += delegate(object sender, DragEventArgs e) {
       e.Effect = DragDropEffects.Move;
   };

5. Nodes in the tree aren't highlighted automatically when you drag data over them, so to aid in dropping onto the right node, the DragOver is raised as the cursor moves over the TreeView.

   private TreeNode hoverNode; // node being hovered over during DnD
    
   treeCats.DragOver += delegate(object sender, DragEventArgs e) {
     Point mouseLocation = treeCats.PointToClient(new Point(e.X, e.Y));
     TreeNode node = treeCats.GetNodeAt(mouseLocation);
     if(node != null) {
       if(hoverNode == null) {
         node.BackColor = Color.LightBlue;
         node.ForeColor = Color.White;
         hoverNode = node;
       } else if(hoverNode != node) {
         hoverNode.BackColor = Color.White;
         hoverNode.ForeColor = Color.Black;
         node.BackColor = Color.LightBlue;
         node.ForeColor = Color.White;
         hoverNode = node;
       }
     }
   };

   This just checks which node the cursor is hovering over and makes it appear selected if it's not null (if the mouse is over an empty area). The node's value is stored in a variable and if the current node is different from the stored variable, indicating the mouse is over a new node, the old node's colours are reset and the new node is coloured to appear selected.

6. So now the ListView will start a drag drop operation when an item is dragged and the TreeView will highlight nodes as the mouse passes over them, but nothing happens if data is actually dropped onto a node. We need to assign a delegate to listen to the DragDrop event, which is raised when data is dropped.

   treeView1.DragDrop += delegate(object sender, DragEventArgs e) {
     if(e.Data.GetDataPresent(typeof(string[]))) {
       Point dropLocation = (sender as TreeView).PointToClient(new Point(e.X, e.Y));
       TreeNode dropNode = (sender as TreeView).GetNodeAt(dropLocation);
       string[] IDs = (string[])e.Data.GetData(typeof(string[]));
       ChangeCategory(IDs, dropNode.Name);
     }
     ResetTreeColors(null, EventArgs.Empty); // 
   };

   The ResetTreeColors method is covered later. First we check to see whether the data which has been dropped is a string array, since we started the operation with an array of strings in the ListView's ItemDrag event. If the data which has been dropped is a string array, we first need to determine where the data was dropped. The TreeView's GetNodeAt(Point p) helps with this. Once you have the node the data was dropped on and the data itself, you just need to process it.

   In this example, I passed the string array and the name of the node to another method which the processing.

7. The ResetTreeColors method I mentioned earlier just iterates through every node in the tree and resets it's fore and background colours. You can also add this method as an EventHandler for the DragLeave event, which resets the target node after the mouse focus leave the control (If the user cancels or completes the drop).

   treeCats.DragLeave += new EventHandler(ResetTreeColors);
    
   private void ResetTreeColors(object sender, EventArgs e) {
     foreach(TreeNode node in treeCats.Nodes[0].Nodes) {
       node.BackColor = Color.White;
       node.ForeColor = Color.Black;
     }
   }

This is fine for TreeViews, ListViews, and other controls which raise the ItemDrag event, but for user controls, you have to implement it yourself. I was planning to run through that as well, but the post was a big longer than expected so I'll save it for another day.

C#:Drag and Drop - Part 2

This snippet will find the nearsest 30 minute interval, so if a user clicks ⅓ of the way between the 4th and 5th division, this would round to 4 hours and 30 minutes.

  double clickPosition = ((double)e.Y + -this.AutoScrollPosition.Y) / heightPerHour;
  int hours = (int)clickPosition;
  int mins = (int)((clickPosition - (double)hours) * 60);
  int roundedMinutes = (int)Math.Round((double)mins / 30, 0) * 30;
  double fractionalHours = hours + (double)(roundedMinutes / 60.0);

This is designed for a control which autoscrolls, so the actual position of the click is determined first. heightPerHour is the height of each row (each hour).

1. You need to change your PHPBB template to include the status next to post matching a certain criteria. I'm the only administrator on the forum, so I set a template flag which is set for administrators, but no-one else.

2. Open viewtopic.php and add the template switch will determine whether the field will be shown. I used my User ID so it wouldn’t be shown for anyone else, but you could use another variable from PHPBB.

   Find the section:

     'S_CUSTOM_FIELDS' => (isset($cp_row['row']) && sizeof($cp_row['row'])) ? true : false,
     'S_TOPIC_POSTER'  => ($topic_data['topic_poster'] == $poster_id) ? true : false,
    
     'S_IGNORE_POST'   => ($row['hide_post']) ? true : false,
     'L_IGNORE_POST'   => ($row['hide_post']) ? sprintf($user->lang['POST_BY_FOE'], get_username_string('full', $poster_id, $row['username'], $row['user_colour'], $row['post_username']), '<a href="' . $viewtopic_url . "&amp;p={$row['post_id']}&amp;view=show#p{$row['post_id']}" . '">', '</a>') : '',

   And at the end add:

     'POSTER_ADMIN'  =>  ($poster_id == 2),

3. Now open stylename\template\viewtopic_body.html and add the following to the top:

     <!-- PHP -->
     $twitterStatus = file_get_contents('/home/hjennerway/lime49.com/forums/twitter.php');
     <!-- ENDPHP -->

4. Still in viewtopic_body.html, add this to the profile section (where the status message will be shown).:

     <!-- IF postrow.POSTER_ADMIN -->
       <br />
       <dd><strong>Currently:</strong> 
         <span class="twitter"><!-- PHP -->echo $twitterStatus;<!-- ENDPHP --></span>
       </dd>
     <!-- ENDIF -->

5. Log in to the admin panel and purge the cache.

6. By default, PHP is not enabled in templates. You can enable it in the Security Settings section on the General tab.

7. Now you need a cronjob to connect to twitter, parse your last update and write it to a file. Create a new php file and modify this script to point to your PHPBB installation. Save it as twittercron.php

8. Add a line to crontab to run the script every six hours (or more, depending on how often you update your status). You'll need to change the path to the location where PHP is installed, which you can using which php.

     * */6 * * * php5.cgi /path/to/twittercron.php 1>&2 &>/dev/null

This code saves your twitter status to a file every six hours. Them stores the contents of the file in a variable, which is shown in the template.