Get control type in a dialog procedure

[ssimop]

I wonder whether there exists a way to get the class of a control within a dialog procedure. Precisely, I would like to know if the class of a control with a given id number is a SysDateTimePick32 control. Many thanks in advance.

Workaround which it worked :

Function tempf09

Code:

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int w=win("Calculate Span in Days" "#32770")
int c=id(3 w)
int j=childtest(c "" "SysDateTimePick32")
out j