convert Word to WideString

byear , bmonth and bdays are comboboxs (3 comboboxs ).
when I try to run it I finde this massage
[Error] add.pas(210): Incompatible types: 'Word' and 'WideString'

if not IsValidDate(byear.text,bmonth.text,bdays.text) then
   ShowMessage('It is not correct date');
   bdays.SetFocus ;
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Mike LittlewoodEngineerCommented:
IsValidDate function does not have string as parameters, its numbers

if not IsValidDate(StrToInt(byear.Text),StrToInt(bmonth.Text),StrToInt(bdays.Text)) then

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for Delphi 6/7 you can use StrToIntDef function instead of StrToInt for error warning,
for example:
if not IsValidDate(StrToIntDef(byear.Text, 0),StrToIntDef(bmonth.Text, 0),StrToIntDef(bdays.Text, 0)) then
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