ImageGear for C and C++ on Windows v19.0
IG_ISIS_TAG_IMAGEWIDTH
| API Reference Guide > ISIS Component API Reference > ISIS Component Tags Reference > Position and Resolution Tags > IG_ISIS_TAG_IMAGEWIDTH |
Number of columns in the image. 0x0100 ∙ 256
IG_ISIS_TAG_IMAGEWIDTH contains the number of columns of pixels (width) in an image.
IG_ISIS_TAG_TYPE_LONG
All source and destination drivers, any many compression drivers.
An integer specifying the number of columns of pixels in the image (View: from 1 to IG_ISIS_TAG_IMAGEWIDTH_MAX).
IG_ISIS_TAG_IMAGEWIDTH is reset to the full width of the page when several other tags are set; therefore the following dependencies must be observed:
IG_ISIS_TAG_PAGESIZE ∙ IG_ISIS_TAG_XRESOLUTION ∙ IG_ISIS_TAG_YRESOLUTION ∙ IG_ISIS_TAG_XPOSITION ∙ IG_ISIS_TAG_YPOSITION ∙ IG_ISIS_TAG_IMAGEWIDTH ∙ IG_ISIS_TAG_IMAGELENGTH
IG_ISIS_TAG_IMAGEWIDTH is required by a number of image viewing applications as well as file writing drivers and any other processes that need to know the number of columns in the image.
 |
Many scanners can only scan areas with widths that are divisible by eight, or some other number. You must use IG_ISIS_choice_get_long(lpDriver, IG_ISIS_TAG_IMAGEWIDTH, IG_ISIS_CHOICE_STEP, lplValue) to determine the minimum increment. |