How to define command IDs

Command IDs are constants which are passed to an application's HandleCommandL() function when a menu item is selected. They are associated with a particular UI element in the application's resource file.

To define an application's command IDs:

• Create a file, with extension .hrh, to contain the command IDs

  The command IDs must be kept in a separate file because they are shared by both the C++ code and the resource definition. This file should be #included in both the application's resource file and header file.

• Declare each command ID using the format below

  #define EExampleMenuCommand1 0x1001

  Note that by convention constants are declared using #define rather than as enums — although the enum prefix E is used. Note also that the value, for example 0x1001 must be unique for the application and must not clash with the standard constants defined in Uikon. Typically, this is avoided by beginning to number application command IDs from 0x1000.