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Chapter 2
Software Overview
©
 National Instruments Corporation
2-7
imgGetBufferElement
Gets an element of a specific type from a 
buffer list.
imgSessionClearBuffer
Clears a session’s image data to the 
specified pixel value.
imgSetArrayPointerValue
Constructs an array of 32-bit pointers 
(a Visual Basic helper function). 
imgSetBufferElement
Sets a buffer list element of a given type 
to a specific value.
Interface Functions
Interface functions load and control the selected IMAQ device and 
cameras. These functions use information stored by the IMAQ 
Configuration Utility.
imgInterfaceLock
Locks a logical interface so that another 
process cannot use it.
imgInterfaceQueryNames
Returns the interface name identified by 
the index parameter.
imgInterfaceReset
Performs a hardware reset on the 
interface type and returns a status, 
either good or bad.
imgInterfaceUnlock
Unlocks a logical interface, allowing 
another process to use it.
Utility Functions
Use utility functions to display an image in a window, save an image to a 
file, or to get detailed error information.
imgPlot
Plots a buffer to a window given a native 
window handle.
imgSessionSaveBufferEx
Saves a buffer of a session to disk in a 
native operating system-specific format 
such as bitmap or tag image file format 
(TIFF).
imgShowError
Returns a null terminated string 
describing the error code.
UM.book  Page 7  Monday, July 13, 1998  9:49 AM