-
Peter Thiem
- PowerBuilder
- Wednesday, 13 October 2021 02:50 AM UTC
Hi,
I am upgrading an application from Powerbuilder Classic 12.5 to Powerbuilder 2021 (build 1288).
For me, the case statement malfunctions and returns false, when a long pointer is the "testexpession" and a constant integer is the "expressionlist", when I was expecting it to return true.
This pattern is used in this application in using the message.wordparm variable to decide how to handle message.
A minimal example is as follows:
// Demonstrate CASE statement does not work comparing LONGPTR to CONSTANT INT
longptr ll_longptr = 177
int li_int = 177
CONSTANT int li_int_constant = 177
CHOOSE CASE ll_longptr
CASE li_int
MessageBox("Alert", 'll_longptr = li_int') // This does occur. NON-constant integer.
END CHOOSE
CHOOSE CASE ll_longptr
CASE li_int_constant
MessageBox("Alert", "case ll_longptr = li_int_constant") // This does not occur. CONSTANT integer
end choose
I find it unexpected that a constant behaves differently from a non-constant in this example.
Is this an expected behaviour, a known defect, depends on the 32/64 bitness of the execution, or affects only me perhaps, or example is faulty?
In any case, I will just work around it for now.
Cheers, Peter
PS. In powerbuilder classic 12.5, message.wordparm appears to be Long, rather than Longptr, and the application was fine.
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