DUtil Project Started

I started a new open source project dutil on google code. dutil (currently 21 units) is aimed to be a cohesive and comprehensive library for general purpose usage. We write code based on Design by Contract principle. We use many pre- and post-conditions to assure the code works properly as expected. We also raise and capture exceptions in code, which makes the logic of code looks perfectly clear. Please feel free to use it and to share it.

Native Look VCL Project Started

I posted some articles to discuss the differences between Delphi visual components and native Windows controls. I think it is worth to make a project rather than share them as attachments here. Now I started an open source project. The project aims to restore the native Windows control look and feel. Please feel free to use it and to share it.

BTW: Due to Internet censorship of China, it is quite difficult to access blogspot.com and blogger.com. If you mail me for technical support, please leave a reply address as well.

Appearance Preferences Interface Tab

Unfortunately, icons are gone in all Context Menu by default since openSUSE 11.3. Even worse is that the Interface has been removed from the Appearance Preferences Window.

I think i am not the only people, who would rather remember the menu item position than search for its label. So I became very unproductive when I have to face a very long context menu of Eclipse without any icons.

Here is the way to give it back:

1. In the terminal, call up gconf-editor 
2. Navigate to desktop/gnome/interface
3. Scroll down and check the menus_have_icons box.

Have fun ;-)

Finally get back all 4GB memory

HP is so ridiculous to send me a 64-bit quad-core HP Pavilion s5235 but a 32-bit Windows 7. Only one thing troubles me, that only 3.25GB (4GB memory is installed) memory is usable. So I called HP customer service, but they cannot give me a 64-bit Windows due to some 64-bit hardware driver problems They also said that I am lucky, because on some devices only 2.99GB memory can be recognized.

Generally speaking, 3.25GB memory is significant for me. And I believed that this is a hardware limitation for a 32-bit operating system, until I read this article. Now I'd like to share you a very simple way to use 4GB memory on a 32-bit Windows 7.

1. Disable your anti-virus program temporarily. 
2. Download the software ReadyFor4GB from here or here 
3. Apply the patch and reboot your system

It works perfect but you will see a "Test mode ..." watermark on the right bottom of every screen. Because the patch instructs you to add "testsigning on" to the startup script, which you cannot bypass. The correct thing you should do is:

1. Download the software RemoveWatermark from here, here or here
2. Apply the patch by pressing 'Y' and reboot your system

Now you can use full 4GB memory!

Introducing Word Lens

Use the magic number

Here is a very interesting article http://www.matrix67.com/data/InvSqrt.pdf

Potential memory leaks by initializing a record (revised)

Currently I am involved in some D projects. Language D has nothing to do with Delphi. It has a lot of great features: Design by Contract, Templates, immutable, Array-Slicing, etc. My teammates give me a lot of advices on software design. One thing just inspired me. so I revised my old article "Potential memory leaks by initializing a record".

The main point is that FillChar() looks more like an abuse of initializing a record. I suggest declare a const record (eg. EmptyRecord) instead of using FillChar(). If you are an expert, you will NOT make such a mistake, but it is still worth to tell the rest Delphi developers.