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5.219 VAR_SIZE_BUFFER_WITH_VERSION

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The VAR_SIZE_BUFFER_WITH_VERSION structure defines a concrete type that is used to pass byte buffers to certain messages. The exact byte pattern is dependent on the structure in which this structure is being used.

 typedef struct _VAR_SIZE_BUFFER_WITH_VERSION
 {
   ULONG ulVersion;
   ULONG cbByteBuffer;                            
   ULONGLONG ullPadding;                            
   [size_is(cbByteBuffer)] BYTE rgbBuffer[];        
 } VAR_SIZE_BUFFER_WITH_VERSION;

ulVersion: The version of the buffer that is being sent. Handling of this field is performed by the specific message that is using this structure.

cbByteBuffer: The size, in bytes, of the data in the rgbBuffer field.

ullPadding: Used to align the array of bytes in the rgbBuffer field to an 8-byte boundary.

rgbBuffer: An array of bytes. The content of the array depends on the specific message that is using this structure. Starts on an 8-byte boundary.