The Lookup command button provides a convenient way to launch an
application-specific "lookup table" maintenance facility. If the Lookup button is disabled, this means that XFormDBF has not been
configured to support this optional feature.
There are two alternative ways to enable the Lookup button, either:
- 1. initialize the global memory variable, m.xfor_lkup before calling
- If this reserved memory variable is defined, xformdbf will take it to be
the VFP command line to execute when the Lookup button is clicked.
This approach is flexible, because it avoids "hard-wiring" any
application-dependent details of the Lookup logic into xformdbf.
- or -
- 2. adjust the macro XFDB_LOOKUP_DFLT in include file xformdbf.h
- Instead of following the above procedure every time you use xformdbf, you
can define your own default Lookup command line by editing the xformdbf.h
include file and rebuilding the xformdbf application. You can still
override the new default by using the global mvar approach above. If m.xfor_lkup
is undefined when xformdbf is invoked, the default Lookup command line
specified by macro XFDB_LOOKUP_DFLT will be used.
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