KBlog

HTC Sense adding all Facebook contacts to phone book On HTC Desire

Kieren Searle — Wed, 23 Jun 2010 17:26:20 +0000

This week I got updated my phone to the HTC Desire. It’s a great phone and I was happy when I discovered that I could link my contacts to their Facebook profile so that their photos and information will appear in my phone book.

My happiness was short lived however as HTC Sense (the application responsible for linking my contacts to their Facebook accounts) had also added all of my “friends” who had listed their phone number on Facebook to my phone book. After some searching I discovered that lots of other people were also having the same problem and there was no fix. It was either no links at all or linking everyone on Facebook.

However I have come across another application called SyncMyPix that can handle linking Facebook accounts to my phone book contacts without adding people to my phone book. It’s available in the Market so it’s easy to install and it’s also free although there is an option to donate if you find the application useful.

Original post blogged on b2evolution.

Unlocking your Facebook account when it "forgets" your e-mail address

Kieren Searle — Thu, 10 Jun 2010 20:47:24 +0000

My girlfriend lost access to her Facebook account this week and Facebook kept reporting that her e-mail address wasn’t registered. Her profile was still active and looking on the Internet showed unfortunately this has happened to a number of people and any requests of help were ignored by Facebook.

The exact message that Facebook was giving was:

Incorrect email address

The email address you entered does not belong to any account. You may try clearing your browser’s cache and cookies by following these instructions.

You can log in using any email address, username or mobile phone number associated with your account. Make sure that it is typed correctly.

A few people had reported finding a solution in using their username instead of their e-mail address when logging in. You have to set your username up manually and not everyone has done this, including my girlfriend, so this wasn’t any help to us. The same goes for phone numbers.

To solve this problem I decided to try to test all of her other e-mail addresses to see if one of those had been made her login e-mail address somehow. Lucky it had and we were back into her account.

I don’t know if this is a bug in Facebook or somehow she changed it without knowing but we now have the account back. One thing that may be the cause was that she no longer had access to the e-mail address in question so it’s possible Facebook discovered this and in their wisdom deleted it from her account without saying

If you do get back into your account then I suggest changing your password just on the off chance that a hacker got into the account to cause the original e-mail address to be lost.

Original post blogged on b2evolution.

Installing KDevelop in Kubuntu/Ubuntu 10.04

Kieren Searle — Tue, 11 May 2010 18:03:17 +0000

After upgrading to Kubuntu 10.04 I was disappointed to find that KDevelop wasn’t listed in the default repositories as apparently it wasn’t ready in time for the release of 10.04. From what I’ve read there’s not much chance of it being added to the repository anytime soon either so I decided to find another way to install it.

Luckily installing it isn’t too difficult (no need to install from source) as it is available from the Kubuntu Backports PPA.

To add the PPA to your repository simply use the command:

sudo add-apt-repository ppa:kubuntu-ppa/backports

You can now update your repository and install KDevelop as normal:

sudo apt-get update
sudo apt-get install kdevelop

Original post blogged on b2evolution.

Resizing a QGraphicsPixmapItem

Kieren Searle — Tue, 19 Jan 2010 16:35:46 +0000

I’ve just finished fighting with some code where I wanted to resize some QGraphicsPixmapItems. I was able to scale them but this didn’t allow me to resize to specific pixels. I decided to take a step back and noticed that if I create a pixmap object first I can resize that, then create a QGraphicsPixmapItem using the pixmap object:

Code:

//first create a pixmap object
QPixmap pixmapObject(":Images/myimage.png");
 
//now create a QGraphicsPixmapItem
QGraphicsPixmapItem * myImagePixmapItem = new QGraphicsPixmapItem;
 
//finally add the resize the pixmap and add it to the QGraphicsPixmapItem
myImagePixmapItem->setPixmap(pixmapObject.scaledToHeight(50, Qt::SmoothTransformation));

The scaledToHeight function in the last line could be either scaled, scaledToWidth or scaledToHeight. scaled allows you to set both the width and height of the object where as the other 2 will scale the other side automatically so that the aspect ratio of the pixmap is preserved.

Original post blogged on b2evolution.

Remove trailing newline character from asctime output

Kieren Searle — Mon, 18 Jan 2010 15:14:16 +0000

When converting a tm structure to a string using the asctime function in c++ you are left with a cstring ending with a newline character (\n). This is often a pain if you want to insert the date into another string to use later.

Since we are using a cstring we know the last two characters are \n and \0. Therefore we just need to change the second to last character in the string from \n to \0:

Code:

struct tm * timeinfo;
char * time = asctime(timeinfo);
time(strlen(time)-1) = '\0';
cout << "The time is: " << time;

If you’re not sure what’s going on here the end of a cstring is terminated when the character \0 (A null terminator) is reached. If we look at what the cstring looks like before we use the above code it would look like this:

Sat May 20 15:21:51 2000\n\0

After the code is run it will look like this:

Sat May 20 15:21:51 2000\0\0

Original post blogged on b2evolution.

Firefox installer not working in Kubuntu 9.10

Kieren Searle — Thu, 12 Nov 2009 22:17:23 +0000

I’ve seen this a few times now. When you use the “Mozilla Firefox Browser Installer” application the installation seems to run through fine but no Firefox is installed. Attempting to run the application again results in an error message about it already being installed. To solve this I just install Firefox the old fashioned way:

sudo apt-get install firefox-3.5

Original post blogged on b2evolution.

Adding scrollbars to a QWidget using a QScrollArea

Kieren Searle — Mon, 9 Nov 2009 15:09:38 +0000

I have been fighting with Qt over the weekend to get a QWidget containing some buttons to scroll when there was overflow. I couldn’t get a scrollbar to display for some time when my project consisted of a QMainWindow containing a QWidget that was subsequently wrapped in a QScrollArea

I finally managed to get my scroller to work but I had to add an extra QWidget around the QScrollArea, so in effect I have a QMainWindow -> QWidget -> QScrollArea -> QWidget. Maybe some code will make things easier:

Code:

//create our firt QWidget and put it in a QVBoxLayout and QScrollArea 
QWidget * mainWidget = new QWidget(this); 
QVBoxLayout * vLayout = new QVBoxLayout(mainWidget); 
QScrollArea * scrollArea = new QScrollArea(mainWidget); 
vLayout->addWidget(scrollArea);      
 
//set up parameters for scroll area 
scrollArea->setWidgetResizable(false);      
 
//create another widget with a QVBoxLayout 
QVBoxLayout * scrollAreaVLayout = new QVBoxLayout(); 
QWidget * scrollAreaWidgetContents = new QWidget(); scrollAreaWidgetContents-&gt;setLayout(scrollAreaVLayout); 
scrollAreaVLayout->setSizeConstraint(QLayout::SetFixedSize);  
 
//add scrolling widget to scroller 
scrollArea->setWidget(scrollAreaWidgetContents);      
this->setCentralWidget(mainWidget);

This code goes into your QMainWindow. All you have to do now is add some objects to scrollAreaVLayout to cause some overflow and scrollbars will appear

Original post blogged on b2evolution.

Adding a QWidget class to a KMainWindow

Kieren Searle — Sat, 7 Nov 2009 16:09:04 +0000

This week I started to create my first Qt application. One of the first problems I came across was that once I had created a class that inherited QWidget for it’s display I wanted to place it into a KMainWindow display that I had already created earlier. My QWidget class was called ProgrammeViewer. To insert this class into my KMainWindow I used the code:

Code:

QWidget * programmeViwer = new ProgrammeViewer();

This created a new QWidget object called programmeViewer using the ProgrammeViewer class. It’s very simple but took me a while to figure out as I was first trying to create the QWidget object using the QWidget class and then attempting to link the object to the ProgrammeViewer class afterwards.

Original post blogged on b2evolution.

	`//first create a pixmap object`
	`QPixmap pixmapObject(":Images/myimage.png");`

	`//now create a QGraphicsPixmapItem`
	`QGraphicsPixmapItem * myImagePixmapItem = new QGraphicsPixmapItem;`

	`//finally add the resize the pixmap and add it to the QGraphicsPixmapItem`
	`myImagePixmapItem->setPixmap(pixmapObject.scaledToHeight(50, Qt::SmoothTransformation));`

	`struct tm * timeinfo;`
	`char * time = asctime(timeinfo);`
	`time(strlen(time)-1) = '\0';`
	`cout << "The time is: " << time;`

	`//create our firt QWidget and put it in a QVBoxLayout and QScrollArea`
	`QWidget * mainWidget = new QWidget(this);`
	`QVBoxLayout * vLayout = new QVBoxLayout(mainWidget);`
	`QScrollArea * scrollArea = new QScrollArea(mainWidget);`
	`vLayout->addWidget(scrollArea);`

	`//set up parameters for scroll area`
	`scrollArea->setWidgetResizable(false);`

	`//create another widget with a QVBoxLayout`
	`QVBoxLayout * scrollAreaVLayout = new QVBoxLayout();`
	`QWidget * scrollAreaWidgetContents = new QWidget(); scrollAreaWidgetContents->setLayout(scrollAreaVLayout);`
	`scrollAreaVLayout->setSizeConstraint(QLayout::SetFixedSize);`

	`//add scrolling widget to scroller`
	`scrollArea->setWidget(scrollAreaWidgetContents);`
	`this->setCentralWidget(mainWidget);`