Is it possible to display the expressions always in the Hexadecimal format instead of the default decimal format?

Yes. It is possible to display the expressions always in Hexadecimal format instead of the default decimal format. In order to accomplish this follow steps below:

1. Select Window > Preferences from C/C++ perspective toolbar.

   The Preferences window appears.

2. Select C/C++ > Debug.

   The Debug settings appear.

3. Change Default expression format to Hexadecimal. By default, it is set to Natural (for more information, refer to the image listed below).
   Figure 1. Preferences Window-Debug Page
   
   
   
   
4. Click Apply.
5. Click OK.
6. Restart CodeWarrior Development Studio.

   When Variables view appears in the debug perspective, the variables appear in the Hexadecimal format.

   Note: This setting is a global setting.