2.2.2.1.3.1 CNTRL Structure Describing a Label Control

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dwType: MUST be 0x00000000 and MUST be ignored.

ulSize: SHOULD be 0x00000000 and MUST be ignored.

ulString: String that contains the label text of a label control. The string MUST NOT be over 128 characters long, including the NULL-terminating character.