Re:how can I process a series of buttons using an array index
Quote
> On my form I've created many buttons
> button1
> button2
> button3
> button4
> I an trying to find a way to loop thru the buttons in
> a FOR... loop and change the enabled property
> for i := 1 to 4 do
> button[i].enabled := condition;
> is this possible ?
Yes, in a way. You can look up a component by name in its owners
component list using the owners FindComponent method, so the code
becomes (the owner is usually the form)
for i:= 1 to 4 do
(FindComponent('button'+IntToStr(i)) As TButton).Enabled :=
condition;
Note that an exception will result if one of the buttons is not found.
The technique above depends on a naming convention which i find highly
useless <g>. I prefer buttons to have a component Name that describes
what they do. In such a case FindCOmponent is of little use. But you
can easily build TLists or arrays the contain references for buttons
you want to handle as a group and the loop over the lists. Creating the
lists is done in the forms OnCreate event:
FButtonList:= TList.Create;
FButtonList.Add( EditCutButton );
FButtonList.Add( EditCopyButton );
FButtonList.Add( EditPasteButton );
The forms OnDestroy handler would contain a FButtonList.free;
You can now do things like
for i:= 0 to FButtonList.Count-1 do
TButton( FButtonlist[i] ).Enabled := condition;
Peter Below (TeamB) 100113.1...@compuserve.com)
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