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Display a screen on a large screen terminal - COM
Method
Name
Description
ShowScreen
For terminals with large screens (MX925, MX915) this method allows the cash register to display specific screens prior to the processing the tender. Use this method to display order items on a virtual receipt.
Parameters
Name
Type
Required
Description
merchantAccount
String
The merchant account associated with the transaction
screenName
String
Name of the XSLT file stored in the terminal and used as a template.
formatB64XML
String
Base64 encoded XML data sent to the screen. Includes data elements as well as styling options. The XML contains all relevant data in simple nodes. The relevant options depend on the template to show the screen and expose content control options.
Callback
Name
Description
ShowScreenCB
Callback used to return whether the screen displayed correctly, including error messages if applicable.
Returned Details
Name
Type
Description
screenId
int
The ID of the screen reporting in the callback. A terminal will only accept one message at a time. If several showScreen requests are sent before getting the showScreen callback, the last message will override previous messages.
pedResult
int
Result denoting whether an error occurred on the PED. A value of 0 means no error occurred.
pspResult
int
Result denoting whether an error occurred on the PSP. A value of 0 means no error occurred.
libResult
int
Result denoting whether an error occurred in the Library. A value of 0 means no error occurred.
