×
Namespaces

Variants
Actions
(Difference between revisions)

Avoid reserved IDs in Symbian resource file enumerations (Known Issue)

From Nokia Developer Wiki
Jump to: navigation, search
hamishwillee (Talk | contribs)
m (Hamishwillee - Bot change of template (Template:KnowledgeBase) - now using Template:ArticleMetaData)
hamishwillee (Talk | contribs)
m (Hamishwillee - Adding missing translation link)
Line 41: Line 41:
  
 
Typically, applications define resource ID values as enumerations and a common mistake is to begin the enumeration from 0 (default), which leads to these hard-to-identify problems.
 
Typically, applications define resource ID values as enumerations and a common mistake is to begin the enumeration from 0 (default), which leads to these hard-to-identify problems.
 +
<!-- Translation --> [[zh-hans:防止资源文件枚举值中出现保留ID值]]

Revision as of 07:38, 16 December 2011

Template:KBKI

Article Metadata
Compatibility
Platform(s): S60 (all)
Article
Created: User:Technical writer 1 (April 7, 2005, updated October 14, 2008)
Last edited: hamishwillee (16 Dec 2011)


Overview

Menu item command IDs and dialog item ID values of 0 will cause problems which may be hard to identify and debug.


Detailed description

Menu item (RESOURCE MENU_ITEM) command IDs and dialog item (RESOURCE DLG_LINE) will cause problems which may be hard to identify and debug if 0 is used as the ID value.


Solution

Always use a non-zero value for MENU_ITEM command IDs, because 0 is reserved for the EEikCmdCanceled command.

Similarly, a dialog's item (DLG_LINE) IDs must be non-zero. Dialog items with a zero ID will result in "Eikon-Dialog 3" panic, where 3 is listed as EEikDialogPanicFocusableLineWithIdZero.

Typically, applications define resource ID values as enumerations and a common mistake is to begin the enumeration from 0 (default), which leads to these hard-to-identify problems.

46 page views in the last 30 days.
×