So Ing wrote:
> can I have delphi components / object which name is number(integer) ? like
> a VB?
VB doesn't allow that. What it lets you do is assign a group of components
the same name, differentiated by a number. It implicitly creates an array
of components by that name, and the numbers are the components' indices in
the array.
Delphi components must all have different names, and they are not allowed
to contain punctuation.
Delphi allows you to declare whatever arrays you want. If you want an
array of TEdit controls, then declare one in your form's private section:
type
TSoIngForm = class(TForm)
private
FGradeEdits: array of TEdit;
end;
Make the array whatever size you need, and then fill it with references to
whatever controls you want. Those controls don't need to have the same
base names. You could have your form's OK, cancel, and help buttons in an
array like this:
SetLength(FormButtons, 3);
FormButtons[0] := OKButton;
FormButtons[1] := CancelButton;
FormButtons[2] := HelpButton;
> or I have to make another new class?
> or there is another way to trick this?
A trick to use is the FindComponent function. You give it a name, and it
will return a reference to the component with that name. Check the help
for details.
If you had a group of components with names like GradeEdit0, GradeEdit1,
GradeEdit2, etc., then you could get a reference to control N with the
exxpression Self.FindComponent('GradeEdit' + IntToStr(N)). Its return type
is TComponent, so you'll need to type-cast it to whatever type you need.
Use that in combination with the array you declare to populate the entire
array with a loop.
> actually I make a school project that use a lot of checkbox
> and it is very tiresome to fill each checkbox manually
> so if I have a component name that using a number then I can use an
> iteracy to fill all the checkboxes
Once you have you array, you can iterate over it just as you would any
other array.
--
Rob
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