Hi,

I'm currently working on the MaskEdit unit, which is ATM not totally Delphi compatible ;)
Since I only have an ancient Delphi (D3) (on ancient hardware, so I cannnot even run newer versions) I have some questions on the behaviour of MaskEdit in current delphi versions.

Question 1:

If I set the text of a MaskEdit to some value that does not match the mask (e.g. EditMask = '0000' and then MaskEdit.Text := 'ABCD'), in D3 no exception is raised and the text in the control is set. Is this still the case in current Delphi's?
(In Lazarus ATM an Exception is raised if you try to do that)

Question 2:
What does an exclamationmark (!) in a mask actually do. The helptext says it removes leading spaces from the data (what data?) and if no ! is in the mask it removes trailing spaces. In real live I see no effect on either MaskEdit.Text or 3:
In the EditMask you can specify if the mask will be saved as pasrt of the data (again: what data?). For instance, if your EditMask is '000;0;_' then maskdata is not saved (the first 0 after the colon ( ; ) sets this value).
I cannot really figure out what it does. I see noe effect n Text or questions 2 and 3: I could, of course, try and understand the VCL code, but that would probably increase the risk of writing code that is almost identical to the copyrighted VCL code.

Thanks for now.

Bart

I am not sure how modern Delphi behaves, but I'd say that Lazarus way is correct here -- this is clearly a programmes's error. OTOH, I think it would be useful to provide a separate function like 'TrySetText' which whould return false instead if saising an exception.

the editor as-is,
e.g. if mask is "000-00-00" and the user enters "1234567", the editor would contain
"123-45-67". Depending on the value of the flag, the actual Text property will contain either "1234567" or "123-45-67".

I am not sure how modern Delphi behaves, but I'd say that Lazarus way is correct here -- this is clearly a programmes's error. OTOH, I think it would be useful to provide a separate function like 'TrySetText' which whould return false instead if saising an exception.

In D3, D4 and Kylix1 ValidateEdit is only called if either the user presses Enter in the control, or the control looses focus.

I still would like someone to test this in D7 or higher.

Yeah, that should not be so hard to implement.

Thanks,

Bart

Ok, I tested it -- D7 does the same. Actually, ValidateEdit only fires if the text was modified. (Or always at the design time).

Ok, I tested it -- D7 does the same. Actually, ValidateEdit only fires if the text was modified. (Or always at the design time).

Thanks for testing it for me.
I'll implement it that way then.

Bart