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Diffstat (limited to 'sys/imfort/doc/imopen.hlp')
| -rw-r--r-- | sys/imfort/doc/imopen.hlp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sys/imfort/doc/imopen.hlp b/sys/imfort/doc/imopen.hlp new file mode 100644 index 00000000..3df3ca51 --- /dev/null +++ b/sys/imfort/doc/imopen.hlp @@ -0,0 +1,35 @@ +.help imopen Sep86 imfort +.ih +NAME +imopen -- open an existing image +.ih +SYNOPSIS +.nf +subroutine imopen (image, acmode, im, ier) + +character*(*) image #I host image to be opened +integer acmode #I access mode +integer im #O receives image descriptor +integer ier #O status code +.fi +.ih +DESCRIPTION +The \fIimopen\fR procedure is used to open an existing image for either +read only access (\fIacmode\fR=1) or read write access (\fIacmode\fR=3). +The image name must be the host system filename of the image, although +the extension may be omitted if desired. If the image open is successful +an image descriptor is returned in \fIim\fR. +.ih +RETURN VALUE +A nonzero status code is returned if the image does not exist or cannot +be opened with the indicated access mode. + +.nf +IE_OPEN: cannot open image +IE_NOTIMH: attempt to access a non-image file as an image +IE_OPNPIX: cannot open pixel file +.fi +.ih +SEE ALSO +imclos, imcrea, imopnc, imdele, imrnam +.endhelp |