I sent a badly constructed message with this content (more or less) a few days
ago. I am re-posting it in the hope that anyone who tried to decipher those
two messages will give this another consideration.
So pardon the repeat, but I'm quite sure someone from this group can lend me a
hand on this issue.
Using LC v8.1.9 on Windows 7 pro
Using a datagrid form, each row has 1 checkbox, 3 fields and 2 buttons.
One of the buttons (the one I need assistance with), named "Query" calls the
"tsnet" library to query a remote WiFi module (esp8266) which returns the
status of one of its IO pins. Works like a charm on ALL rows, scrolled or
not... because (I reckon) the button is actually *IN* the grid, so there's no
issue with the group name (as will become clear in a moment).. it is always
"me".
I also want to "automate" the queries (there are 8 such wifi modules involved).
So I have a button outside of the datagrid which selects each row of the
populated datagrid in a "repeat" statement and sends a "mouseUp" message to the
datagrid.
What I discovered is that (apparently) I have to "manufacture" the group name
of each row to which I want to send the "mouseUp" message. So as I progress
through the populated rows of the grid the "pseudo" group name of each row
basically becomes the row number along with a prefix of "Row Template"... i.e.
row 1's group name/label is "Row Template 0001", row 2 is "Row Template 0002",
etc.
Great... but once the grid starts to scroll, strange things start to happen.
The pseudo-group name will "wrap"... and where it wraps depends on the number
of rows which are initially visible on the grid.
For example, if there are 8 populated rows and the DataGrid is sized to only
show 3 rows at a time, upon the initialization of the Datagrid, the "pseudo"
Row templates groups are named:
row 1: "Row Template 0001"
row 2: "Row Template 0002"
row 3: "Row Template 0003"
row 4: "Row Template 0004"
row 5: "Row Template 0005"
row 6: "Row Template 0001"
row 7: "Row Template 0002"
row 8: "Row Template 0003"
this is demonstrated by putting a "put me" in the Behavior Script within the
MouseUp handler to which I am sending the "mouseUp" message in order to
"process" that row's content... i.e.
on mouseUp
put me
...do something
end mouseUp
What is interesting (and confusing at the same time), if I use a specific
"wrapping pattern" (such as the one described above) and mutually "wrap" the
name of the group to which I am about to send the "mouseUp" message, it works!
... i.e. from within the button outside of the datagrid:
... (in this example, the serverList array holds the 8 wifi module names I need
to query with tsnet)
put "0000" into pad
put 0 into q
repeat with y = 1 to (the number of lines in the keys of serverList)
set the dgHilitedLines of group "DataGrid 1" to y
add 1 to q
if q > 5 then put 1 into q
put char 1 to (4 - length(q)) of pad & q into z
put char 1 to (4 - length(y)) of pad & y into z
put "Row Template " & z into z
send "mouseUp" to button "Query" of group z
end repeat
THIS is confusing because, although I am sending the same message to what
appears to be the same pseudo-group name, once the grid scrolls beyond row 5,
LC manages to know that I am actually referencing another grid row than the
one(s) with the same pseudo-group names.
To scroll the grid, programatically, I used:
set the dgHilitedLines of group "DataGrid 1" to y
to accomplish this.
I also tried the more "seemingly appropriate":
dispatch "ScrollLineIntoView" to group "DataGrid 1" with pLine"
but this command changes the highlight of one of my fields which I have
customized to have red text in case of an error. Regardless, using either
method for scrolling does NOT seem to have any effect on the wrapping of the
pseudo group name.
Since this "wrap-point" changes based on the "amount" of the datagrid I
"expose", this doesn't lend itself to portable or supportable code.
If I don't "wrap" my group names according to this sort of pattern, once my
code reaches the 6th line (in my example), I get a:
" ... Chunk: can't find background), char 1 " error ... because "Row Template
0006" does not exist... it is "Row Template 0001"
No doubt I'm approaching this wrong but I'm trying to teach myself datagrids
and it's a struggle for this old brain!
Is there another method for sending a "mouseUp" to a button on a datagrid form
row?
Douglas Ruisaard
Trilogy Software
(250) 573-3935
Douglas Ruisaard
Trilogy Software
(250) 573-3935
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