来自:http://greatbal.blogspot.com/2007/02/gcalc-v10.html

When I bought my ASUS P525 PPC Phone, i was looking around for a calculator application wherein I can take advantage of it's built-in keypad; a calculator application wherein I could use with only just one hand. I found one, but doesn't really quite right for my needs. So, I decided to write my own calculator application, a simple one, but is good for one-hand use. And, it also works great on a Smartphones! :)
Feel free to download if you like it. :)
NOTE: The cab installer is for QVGA/Square devices. If you have a 176x220 screen, you ca download any of the 176x220 skin below.

gCalc v1.0 Features:
Simple, one-hand usage for PPC's with keypad/keyboard and Smartphones.
Skinnable (see below).
Works well with most popular screen types : 176x220, QVGA portrait, QVGA landscape, Square (240x240).

How to change skin:

You can change skins by downloading any of my sample skins below, or you can reate your own (i've included he Basic skin below which you can use as a template for creating your own customized skins).
Just download any of the sample skin files below.
Extract the archived file on your pc hard disk.
Transfer the folder of the extracted files to the \Skins\ folder of the application directory (where you installed gCalc).
Launch gCalc from your Start Menu, go to About by pressing the right-softkey (Shift) and pressing About (or keypad #8).
You will then see all installed skins on your \Skins folder.
Choose the desired skin and press [Select].
EDIT: Alternate download site on airfagev.com. Thanks to its webmaster, Mr. Rey Vegafria.

1.Download Skins:

Basic Skin (QVGA/Square). I included this skin as a template for those who would like to create their own skin. Just change the images and use a text editor like notepad to edit the skin.ini file.
Download Basic Skinhttp://www.geocities.com/greatbal/downloads/Basic.zip

2.Default Skin (QVGA/Square). This skin is already included in the cab file.
Download Defualt Skinhttp://www.geocities.com/greatbal/downloads/Default.zip

3.ClownFish Skin (QVGA/Square). This is the gCalc skin i used when i was still using the "iPhone" theme. Blends well with my iPhone WAD and Phone Dialler skins. :)

Download ClownFish Skinhttp://www.geocities.com/greatbal/downloads/ClownFish.zip

4.Default(176x220). For Smartphone users who have 176x220 screen resolution, you can replace the default skin of the cab installer with this one. This is similar to the QVGA Default skin.
Download Default(176x220) Skinhttp://www.geocities.com/greatbal/downloads/Default_176x220.zip


5.Basic(176x220). For Smartphone users who have 176x220 screen resolution who wants to create their own skin, you can use this as a template. This is similar to the QVGA Basic skin.
Download Basic(176x220) Skinhttp://www.geocities.com/greatbal/downloads/Basic_176x220.zip