Date functions - Undeclared Identifier 1

[mmaxwell]

I'm tearing my hair out!

this simple line
Edit1.Text:= InttoStr(DaysInAMonth(2020,2));
gives when I compile
[Error] Unit1.pas(35): Undeclared identifier: 'DaysInAMonth'

However I use the function (& other date functions) I get the same. Help please!

Many thanks

Michael

 

[LucieLastic]

hi

Have you got DateUtils in your USES clause?

lou

 

[mmaxwell]

Hi Lou -

No, I haven't. I have not seen this advice anywhere and presumably there are other functions that need mention in the uses clause? Is there a list? I couldn't find it under help (Delphi 7 Enterprise).

Many thanks for your prompt help.

Michael

 

[LucieLastic]

hi

If you F1 on the appropriate function, near the top it should state the appropriate unit it's declared in - the specified unit must be included in your USES clause. Eg. for the DaysIntheMonth, it gives:-

DaysInAMonth function

See also
--------------------------------------------------
Returns the number of days in a specified month of a specified year.

Unit
DateUtils <---- HERE

Category
datetime routines

Delphi syntax:

function DaysInAMonth(const AYear, AMonth: Word): Word;
:
: etc

lou

 

[mmaxwell]

Great Lou - many thanks.

Michael