TD 2005.1 SAM_AnyEdit being sent to Column when ROW_Hidden flag changed

forum.gupta.bugreport (2005-2010)
TerryP
Australia
Posts: 272
Joined: 06 Mar 2017, 22:41
Location: Mackay QLD Australia

TD 2005.1 SAM_AnyEdit being sent to Column when ROW_Hidden flag changed

Post by TerryP » 21 Nov 2005, 05:27

 Posted by:  Terry Phythian 

I will do some more investigation regarding this issue before I eventually
log-a-bug for it ....

I have a Property Editor application that uses a table window with two
columns, Property and Value. The Value column is a drop down list cell for
which the list contents change depending on the Property they represent.

One of the Property/Value rows identifies the overal item type (eg. Normal,
Check box), for which the selected value is tested under SAM_AnyEdit to
determine whether other Property/Value rows (eg. Checked Value, Unchecked
Value) are displayed. A window function is used to implement this
processing, which basically set the ROW_Hidden flag appropriately for the
other Property/Value rows.

Up to TD 2005 PTF1 this worked fine. However, in TD 2005.1, when
SalTblSetRowFlag( ) is called to change the ROW_Hidden flag for the other
Property/Value rows, then they too then receive SAM_AnyEdit messages. These
messages weren't being sent in previous versions.

In my app, the same function was being called again within the new
processing of SAM_AnyEdit, causing an endless recursive loop, and finally
the expected SQL Windows run time error "Unrecoverable Error: The depth of
function calls and messages has exceeded the capacity of the system." is
displayed.

Of course, it's quite easy to work around this by setting/testing a sentinel
boolean variable within the SAM_AnyEdit processing to prevent the infinite
recursion. However, this is a change of behavior which is unexpected (and
undocumented?) and could cause problems in other, similar scenarios.

Has anyone else noticed this new behavior, or other changes to row flag /
column window message handling?

Terry Phythian
Reprise Consulting
Brisbane, Australia

Wolfgang Lackner

Re: TD 2005.1 SAM_AnyEdit being sent to Column when ROW_Hidden flag changed

Post by Wolfgang Lackner » 30 Nov 2005, 10:42

 Posted by:  Wolfgang Lackner 

SAM_AnyEdit is also sent to a column, when you just set the focus:

Column: col1
On SAM_Edit
Function()

in Function:
SalTblSetFocusRow(col1..)
then you will get a new On SAM_Edit and run into error

Wolfgang

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