Common Desktop Environment: Style Guide and Certification Checklist

Sizes

There are three sizes of the desktop icons: 16x16, 32x32, and 48x48, referred to as 16, 32, and 48. (They have suffixes of .t, .m and .l respectively.) If your application comes from the PC domain, then the size 16 and 32 icons used in the desktop should be familiar sizes. Table 4-2defines where each size is used.

Table 4-2 Icon Sizes and Usage

Component 

Low Resolution 

Med. Resolution 

High Resolution 

File Manager 

32, 16 

32, 16 

32, 16 

Application Manager 

32, 16 

32, 16 

32, 16 

Front Panel 

32 

48 

48 

Subpanels 

16 

32 

32 

Front Panel Controls 

16 

16 

16 

Minimized Window 

32 

48 

48 


Note -

24x24 icons (suffixes of .s) are used for internal application graphics like toolbar graphics and are not part of the standard set of desktop icons.


Table 4-3 lists the icons you need to create for an application. A total of 16 icon files are needed, assuming one of each type and size. Figure 4-16shows an example set of icons.

Table 4-3 Minimum Required Icon Set

Type of Icon 

Color 

Color 

Color 

Mono. 

Mono. 

Mono. 

 

16  

32  

48  

16  

32 

48 

Application Icon 

✓ 

✓ 

✓ 

✓ 

✓ 

✓ 

Document or File Icon 

✓ 

✓ 

 

✓ 

✓ 

 

Application Container Icon 

✓ 

✓ 

 

✓ 

✓ 

 

Minimized Windows 

 

 

✓ 

 

 

✓ 

Recommended 

ex: 

Any icons or graphics displayed by your application are designed to display well on black-and-white and gray-scale monitors. These visuals also display well on low-color (16) systems.