Oemwaitfordecoderaw - Hand Held Products 4X00 Software Manual

Imageteam 4x00 series software development kit (sdk)

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User manual (24 pages)

Table Of Contents

Table of Contents

Parameters

dwTimeout

Time in milliseconds that the engine scans until finding a decode. The timeout value must be greater than zero.

pchMessage

Upon successful return, this variable points to the decoded message. The caller should allocate enough memory for

this buffer to hold the largest possible decode message. See

pchCodeID

Upon successful return, this variable points to the Hand Held Products Code ID for the decoded symbology. See

Symbology Identifiers

pchAIMID

Upon successful return, this variable points to the AIM ID for the decoded symbology. See

3-1).

pchSymModifier

Upon successful return, this variable points to the code modifier for the decoded symbology. See

(page 3-1).

pnLength

Upon successful return, this variable points to the length of the bar code data that was captured. The length is

represented in terms of the number of TCHAR characters in the TCHAR *pchMessage.

fpCallBack

Pass in this pointer to a parameterless BOOL-returning function to allow for an external event that causes a return from

oemWaitForDecode. As long as the function pointed to by fpCallBack returns TRUE, oemWaitForDecode continues to

attempt to decode a symbol. If the function pointed to by fpCallBack returns FALSE, then oemWaitForDecode returns

with a Result_t of RESULT_ERR_NOTRIGGER. OemWaitForDecode also returns if it gets a valid decode or the

dwTimeout occurs. Setting the parameter to NULL prevents the API from calling this callback function. In that case,

oemWaitForDecode only returns after a valid decode of dwTimeout has passed without a successful decode.