Hand Held Products 4X00 manual OemWaitForDecode, Resultt oemWaitForDecode

Parameters

pImageDesc

Pointer to a data structure describing the image to to be retrieved. typedef struct

{

int AspectRatio; int OffsetX;

int OfsetY; unsigned int width; unsigned int height; int resolution; FileFormat_t format; int reserved;

} IntellImgDesc _t;
Aspect Ratio:	Ratio of the bar code height (linear bar codes) or row height (2D bar codes) to the narrow element
	width.
OffsetX:	Offset in X direction of center of image, relative to the bar code center, using Intelligent Bar Code
	Units (page 2-65).
OffsetY:	Offset in Y direction of the center of the image, relative to the bar code center, using Intelligent Bar
	Code Units. Positive Y is above the bar code center, and negative Y is below the center.
width:	Width of image, using Intelligent Bar Code Units.
height:	Height of image, using Intelligent Bar Code Units.
resolution:	The number of pixels to use per Intelligent Bar Code Unit. A higher resolution yields a better quality
	image, but also a larger one. The exact value of resolution required is dependent on how far away
	the Imager is from the image, and how high the desired image quality.
format:	Format of image. The following formats are supported:
	FF_RAW_BINARY	Raw data that's converted to 2 gray levels
	FF_RAW_GRAY	Raw data that's converted to 256 gray levels

oemWaitForDecode

This function causes the engine to start scanning for a decodable symbol. This function does not return until either a symbol is decoded, or the timeout period has elapsed. If a message was decoded it is returned in this function's parameters.

Result_t oemWaitForDecode (

DWORD dwTimeout, TCHAR *pchMessage, TCHAR *pchCodeID, TCHAR *pchAIMID, TCHAR *pchSymModifier, WORD *pnLength, BOOL (*fpCallBack) (void)

)

Return Values

RESULT_SUCCESS

RESULT_ERR_ENGINEBUSY

RESULT_ERR_PARAMETER

RESULT_ERR_NOTRIGGER

RESULT_ERR_NODECODE

RESULT_ERR_NOIMAGE

IMAGETEAM™ 4X00 Series Software Development Kit (SDK) User’s Guide 2 - 67