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Developer
Posts: 49
Registered: ‎03-27-2013
My Device: z10
My Carrier: Banglalink
Accepted Solution

Enum Forward Declaration of SystemUiResult

Can anyone please assist me how to forward declare enum "Type" inside class "SystemUiResult"? In one of my header file I want to use variable type enum named "Type" which is declared inside "bb/system/SystemUiResult". I can forward declare "SystemUiResult" like below-

namespace bb
{
	namespace system
	{
		class SystemUiResult;
	}
}

 Need to know how to forward declare enum?

 

Thanks.

 

Developer
Posts: 1,524
Registered: ‎12-18-2012
My Device: Z30, Z10 LE, DevAlpha C, PlayBook

Re: Enum Forward Declaration of SystemUiResult

Forward-declaring enums is possible only in C++0x (it seems bbndk has recent enough version of gcc for this), but only if the size of enum is known from declaration:

enum Enum:int;
or
enum class Enum; // enum class defaults to int

SystemUiResult::Type is a simple enum, so forward declaration won't work because the size of the enum is not known unless full definition is given:

class BB_SYSTEM_EXPORT SystemUiResult
{
...
    enum Type {

To use it the entire header needs to be included.

 

 

 

 

 


Andrey Fidrya, @zmeyc on twitter
Developer
Posts: 49
Registered: ‎03-27-2013
My Device: z10
My Carrier: Banglalink

Re: Enum Forward Declaration of SystemUiResult

Thank you very much.....