> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/hardware/oem-readers-and-components/oem-readers/odynamo/documentation/programmers-manuals/common-message-structure-mtcms-programmers-reference-manual-c++/mtcmsmessage-structure.md). # MTCMSMessage Structure These methods allows building CMS messages to be used in communications with MagTek CMS devices. #### CreateMTCMSMessage This constructor method builds an MTCMSMessage instance with the provided values. ``` MTCMS_API MTCMSMessage* CreateMTCMSMessage( int messageType, int applicationID, int commandID, int dataTag, const unsigned char* data, int dataLength); ``` Parameters:
ParameterDescription
messageTypeMessageType value
applicationIDApplicationID value
commandIDCommandID value
dataTagData tag value
dataData value
dataLengthLength of data value
Return Value: MTCMSMessage structure #### CreateMTCMSMessageFromBytes This constructor method builds an MTCMSMessage instance with the provided values. ``` MTCMS_API MTCMSMessage* CreateMTCMSMessageFromBytes( const unsigned char* messageBytes, int messageBytesLength); ``` Parameters:
ParameterDescription
messageBytesMessage in byte array value
messageBytesLengthLength of message bytes value
Return Value: MTCMSMessage structure #### CreateMTCMSRequestMessage This constructor method builds an MTCMSMessage instance with the provided values. ``` MTCMS_API MTCMSMessage* MTCMSMessage( int applicationID, int commandID, int dataTag, const unsigned char* data, int dataLength); ``` Parameters:
ParameterDescription
applicationIDApplicationID value
commandIDCommandID value
dataTagData tag value
dataData value
dataLengthLength of data value
Return Value: MTCMSMessage structure #### ReleaseMTCMSRequestMessage This method releases the resource allocated by calls to CreateMTCMSMessage and CreateMTCMSRequestMessage methods. ``` MTCMS_API void ReleaseMTCMSMessage(MTCMSMessage* message); ``` Parameters:
ParameterDescription
messageMTCMSMessage to deallocate.
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