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- The JET layer has a list of supported userexits that open tabs (i.e. and).
If one of them is detected, the submasks are only opened once and remain
open as long as the combined form is open, too. So the pre-mask triggers
for such submasks are usually fired only once. If however the userexit
is unknown, it is executed and the widget opened by this userexit is
displayed in the tab. This mechanism is used for instance in the LogiView
form.
- All fields of subforms - i.e. tabs using the F> - need to be added
to the main form as invisible fields. The best way of adding the invisible
fields is to add the whole submask as a mask component to the main form.
Please look at a standard mask like EDB-PRO-CFR to see how this can
be done.
- Combined forms that are still using the old mechanism to support more
than one subform (with the /i=... and /v=... arguments to bvb_usx_cmb_rpl)
must be adapted to the F> mechanism, which is supported byand.
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