Rational object
Holds the rational values found in Exchangeable Image File (EXIF) tags. It is a supported element type of the Vector object and can be created using "WIA.Rational" as the ProgID in a call to CreateObject. The Rational object is a container.
Members
The Rational object has these types of members:
Properties
The Rational object has these properties.
| Property | Access type | Description |
|---|---|---|
| Denominator |
Read/write |
Sets or retrieves the Rational value Denominator. |
| Numerator |
Read/write |
Sets or retrieves the Rational value Numerator. |
| Value (Rational) |
Read-only |
Retrieves the Rational value as a Double. |
Remarks
Note that the Value (Rational) property is read-only. This is because there can be more than one way to represent a rational value as a floating point number. To set the value of a Rational object, you must set its Numerator and Denominator separately.
For example code, see Set Rational Numerator and Denominator in Shared Samples.
Requirements
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 R2 [desktop apps only] |
| Header |
|
| IDL |
|
See also
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Reference