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Jack,
The answer is that, essentially, .obj is not a property of a
string variable. The Alias variable type understands that it may hold
string, numeric, date, object, etc data. MS VB uses the 'variant' type for
the same sorts of casting.
Hope this helps.
Sam Kome
Sage Software, Inc
Hi All,
Can someone explain why one has to use alias
variables in the simple snippet below to make it work? When I tried to use
:
start_x = CentroidX (sTableName.obj)
start_y = CentroidY(sTableName.obj)
the program generates error messages.
Thanks
Jack
Here is the snippet:
Dim start_x, start_y As Float
Dim a as Alias
Dim b as Alias
Dim nrows, crows as smallint
Dim szFullTableName, sTableName as String
szFullTableName =
FileOpenDlg("","","TAB","Open Table with
Point Objects")
Open Table szFullTableName
sTableName = PathToTableName$(szFullTableName)
crows=1
nrows = TableInfo(sTableName, TAB_INFO_NROWS)
Do While (crows <= nrows)
Fetch Rec crows From sTableName
a = sTableName + ".obj"
start_x = CentroidX (a)
start_y = CentroidY(a)
' this code
works
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