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These values are used to identify the data type of an image's metadata associated with PropertyTag Values stored in a PropertyItem object.
The following table shows the data types for property tags.
| PropertyTagType Value | Description |
|---|---|
| PropertyTagTypeASCII | Specifies that the value data member is a null-terminated ASCII string.
If you set the type data member of a PropertyItem object to PropertyTagTypeASCII, set the length data member to the length of the string including the NULL terminator. For example, the string HELLO would have a length of 6. |
| PropertyTagTypeByte | Specifies that the value data member is an array of bytes. |
| PropertyTagTypeLong | Specifies that the value data member is an array of unsigned long (32-bit) integers. |
| PropertyTagTypeRational | Specifies that the value data member is an array of pairs of unsigned long integers.
Each pair represents a fraction. The first integer is the numerator; the second integer is the denominator. |
| PropertyTagTypeShort | Specifies that the value data member is an array of unsigned short (16-bit) integers. |
| PropertyTagTypeSLONG | Specifies that the value data member is an array of signed long (32-bit) integers. |
| PropertyTagTypeSRational | Specifies that the value data member is an array of pairs of signed long integers.
Each pair represents a fraction. The first integer is the numerator; the second integer is the denominator. |
| PropertyTagTypeUndefined | Specifies that the value data member is an array of bytes that can hold values of any data type. |
Requirements
OS Versions: Windows CE 5.0 and later.
Header: Imaging.h
See Also
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