imaq1394GetImageCW
Format
imaq1394GetImageCW (sessionID As SESSION_ID, bufferNumberDesired As Long, bufferNumberActual As Long, onOverwrite As OverwritePolicy, dispatch As Object) As IMG_ERR
Purpose
Acquires the specified frame into Image. Call this function only after calling imaq1394ConfigureAcquisition. If the image type does not match the video format of the camera, this function changes the image type to a suitable format.
Parameters
Parameter | Type | Description | ||
sessionId | SESSION_ID | A valid Session ID, which you can obtain using imaq1394CameraOpen2. | ||
bufferNumberDesired | long | The cumulative buffer number of the image to retrieve. For continuous acquisitions, set this parameter to IMG1394_LASTBUFFER to get the next buffer or set this parameter to IMG_IMMEDIATEBUFFER to get the current buffer. | ||
bufferNumberActual | long (passed by reference) | The actual cumulative buffer number of the image retrieved. | ||
onOverwrite | OverwritePolicy | The overwrite policy to follow if a buffer is overwritten during acquisition.
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dispatch | Object | A valid CWIMAQImage. |
Return Value
On success, this function returns IMG1394_ERR_GOOD. On failure, this function returns an error code. You can obtain a more detailed error message with imaq1394ShowErrorCW.