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4/8/2010
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This class is used to manage reference times. It shares the same data layout as the REFERENCE_TIME data type, but adds some (nonvirtual) functions that provide simple comparison, conversion, and arithmetic capabilities.
A reference time is a unit of time represented in 100-nanosecond units. This time unit is the same time unit used by the Win32 FILETIME structure, although the two types cannot be interchanged.
The time represented by REFERENCE_TIME is not the time elapsed since 1/1/1601. It is either stream time or reference time, depending on the context.
Data Members
| Member | Description |
|---|---|
m_time |
REFERENCE_TIME value of this object. |
Member Functions
| Member function | Description |
|---|---|
Constructs a CRefTime object. |
|
Returns the reference time in units of 100 nanoseconds. |
|
Returns the reference time in milliseconds. |
Operators
| Operator | Description |
|---|---|
Casts the CRefTime object to a REFERENCE_TIME data type. The result is the m_time value. |
|
Implements the copy constructor for the CRefTime class. |
|
Adds two CRefTime objects and makes this object equal to the result. |
|
Subtracts one CRefTime object from another CRefTime object and makes this object equal to the result. |
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment |