TDisplayConfigurationBase Class Reference
| class TDisplayConfigurationBase |
Base class for display configuration hierarchy. Defines common facilities for all configurations (size, mask, accessibility).
Constructor & Destructor Documentation
TDisplayConfigurationBase(TInt)
| TDisplayConfigurationBase | ( | TInt | aVersion | ) | [protected, inline] |
Constructs a TDisplayConfigurationBase, setting the version to aVersion and all attributes undefined.
Generally used internally in the constructor chain.
Parameters
| TInt aVersion | The defined size of this object. |
TDisplayConfigurationBase()
| TDisplayConfigurationBase | ( | ) | [private, inline] |
TDisplayConfigurationBase(const TDisplayConfigurationBase &)
Member Functions Documentation
Clear(TAttribute)
Marks the given attribute as undefined.
Parameters
| TAttribute aAttribute | The attribute to set as undefined. |
ClearAll()
Marks all attributes as undefined.
IsDefined(TAttribute)
Check if a particular member is defined.
MemberAccessible(const TMember &)
|
TBool
| MemberAccessible | ( | const TMember & | aMember | ) | const [protected, inline] |
Internal function for determining whether a given field name is accessible for an object of the current defined size. This must be used before trying to access any field.
Parameters
| const TMember & aMember | The name of the field to check. |
Panic(TInt)
| void | Panic | ( | TInt | aPanicNo | ) | [protected, inline] |
Version()
|
TInt
| Version | ( | ) | const [inline] |
Reads the version field.
The version is set automatically in the constructor, or by the GetDisplayConfiguration() method to indicate the sender's supported structure version. The version reported after GetDisplayConfiguration() will match the version of one of the hierarchy of TDisplayConfiguration classes documented in the header, and will never exceed the constructed version.
operator=(const TDisplayConfigurationBase &)
operator==(const TDisplayConfigurationBase &)
Compares two TDisplayConfigurationBase instances.
Generally used internally in the comparison chain. The two objects are equivalent if they have the same version and the same set of attributes defined.
Member Enumerations Documentation
Enum TAttribute
Enumeration of all of the display configuration attributes. Used in combination when calling ClearSettings() and SettingsDefined(). If attributes are added, corresponding enumeration bits must also be added.
Enumerators
| EResolution = 0 | |
| ERotation | |
| EResolutionTwips | |
| EAttributeMax | |
Enum TPanics
Enumeration of the panics that may be raised when filling the display configuration These are all contractual input checks and should be avoidable by correctly written callers.
Enumerators
| EPanicNegResolution = 1 | |
| EPanicSemiZeroResolution | |
| EPanicNonOpaqueBackground | |
| EPanicIllegalRotation | |
| EPanicNegTwips | |
| EPanicSemiZeroTwips | |
| EPanicConfigInvalid | |
Member Data Documentation
TBitFlags32
iDefined
Indicates which fields in the configuration have defined values. If a field contains an undefined value, it must be ignored. See TAttribute for possible bit values.
TInt
iVersion
Size to treat this object in bytes. Used to provide backward and forward compatibility.
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reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License
v1.0.