1)
type
StringArray : array of String;
defines a StringArray type to be dynamic array.
are you sure, that you have SetColumnNames defined as
procedure SetColumnNames(names : StringArray);
rather than:
procedure SetColumnNames(names : array of string);
???
because if you have
procedure SetColumnNames(names : StringArray);
you cannot pass array in the following way
SetColumnNames(['1','2','3']);
because: ['1','2','3'] is an open array, while SetColumnNames requires
a dynamic array to be passed.
btw, there's no way to define open-array type. Open arrays can be
passed only as a parameters.
2)
if you have dynamic array type declared you CAN use it as a property
type
StringArray : array of String;
...
fNames : StringArray;
procedure SetColumnNames(ANames: StringArray);
property ColumnNames : StringArray read fNames write SetColumnNames
.. So if you want to assign a value to the ColumnNames property, you
can do it, only by generating a dynamic array first:
// the function generates a StringArray from Open String Array!
function MakeStringArray(const Strs: array of string): StringArray;
var
i : integer;
begin
SetLength(Result, length(strs));
for i := 0 to length(strs) - 1 do
Result[i] := strs[i];
end;
...
// compiles and works nicely and effectevely
// glory to FreePascal (and originally delphi 7 introducing open arrays)
myobj.Names := MakeStringArray(['1','2','3','4','5']);
3) You must understand the difference between dynamic array types and
open-arrays parameters
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