ImageGear for C and C++ on Linux v20.0 - Updated
API Reference Guide > MD Component API Reference > MD Component Macros Reference > MED_DCM_DS_TAG_GROUP

This macro is used for getting the Group Number out of a Tag.


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Tag Supply this argument with a 32-bit Tag value.

Return Value:

Returns the 16-bit Group Number portion of a 32-bit Tag value.

Supported Raster Image Formats:

This function does not process image pixels.

The image must have a DICOM DataSet attached to it. Use MED_DCM_DS_exists to check whether the image contains a DataSet.


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group = MED_DCM_DS_TAG_GROUP(DCM_TAG_IssuerOfPatientID)
/* group equals 0x0010                          */


Supply it with a 32-bit Tag value, and it will return the 16-bit Group Number value. The Group Number is the most significant WORD of the 32-bit Tag value. 

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