The CD Forum > how do you do multiple else, if commands? (SOLVED)

Full Version: how do you do multiple else, if commands? (SOLVED)

The CD Forum > The CD Forum > WinBuilder

royalbox

Feb 2 2009, 07:28 PM

As the title says, how do you do multiple else, if commands?

I've tried:

CODE

If,%pRadioGroup1%,Equal,0,Begin
  Message,0,INFORMATION
  Else,If,%pRadioGroup1%,Equal,1,Message,1,INFORMATION
  Else,If,%pRadioGroup1%,Equal,2,Message,2,INFORMATION
  Else,If,%pRadioGroup1%,Equal,3,Message,3,INFORMATION
  Else,If,%pRadioGroup1%,Equal,4,Message,4,INFORMATION
End

But only the first option is executed.

I thank thee.

psc

Feb 3 2009, 03:00 AM

QUOTE (royalbox @ Feb 3 2009, 01:28 AM)

As the title says, how do you do multiple else, if commands?

I've tried:

CODE

If,%pRadioGroup1%,Equal,0,Begin
   Message,0,INFORMATION
   Else,If,%pRadioGroup1%,Equal,1,Message,1,INFORMATION
   Else,If,%pRadioGroup1%,Equal,2,Message,2,INFORMATION
   Else,If,%pRadioGroup1%,Equal,3,Message,3,INFORMATION
   Else,If,%pRadioGroup1%,Equal,4,Message,4,INFORMATION
End

But only the first option is executed.

I thank thee.

Only 'If' is a statement, Else is none.

Syntax: If,<Condition>,<statement>[<newline>Else,<statement>]
<statement> cab be a Begin - End block

CODE

If,%pRadioGroup1%,Equal,0,Begin
  Message,0,INFORMATION
End
Else,Begin
  If,%pRadioGroup1%,Equal,1,Message,1,INFORMATION
End
Else,Begin
  If,%pRadioGroup1%,Equal,2,Message,2,INFORMATION
End
Else,Begin
  If,%pRadioGroup1%,Equal,3,Message,3,INFORMATION
End
Else,Begin
  If,%pRadioGroup1%,Equal,4,Message,4,INFORMATION
End

But in this case it would bea easier to use:
So your code should look like:

CODE

If,%pRadioGroup1%,Equal,0,Message,0,INFORMATION
If,%pRadioGroup1%,Equal,1,Message,1,INFORMATION
If,%pRadioGroup1%,Equal,2,Message,2,INFORMATION
If,%pRadioGroup1%,Equal,3,Message,3,INFORMATION
If,%pRadioGroup1%,Equal,4,Message,4,INFORMATION

That is not measurable slower.

Peter

Ed_P

Feb 3 2009, 12:04 PM

Would this not work?

CODE

If %pRadioGroup1% Equal 0 (
  Message 0 INFORMATION
) Else (
  If %pRadioGroup1% Equal 1 Message 1 INFORMATION
) Else (
  If %pRadioGroup1% Equal 2 Message 2 INFORMATION
) Else (
  If %pRadioGroup1% Equal 3 Message 3 INFORMATION
)Else (
  If %pRadioGroup1% Equal 4 Message 4 INFORMATION
)

Although maybe this?

CODE

If %pRadioGroup1% Equal 0 (Message 0 INFORMATION)
  Else
  If %pRadioGroup1% Equal 1 (Message 1 INFORMATION)
    Else
    If %pRadioGroup1% Equal 2 (Message 2 INFORMATION)
      Else
      If %pRadioGroup1% Equal 3 (Message 3 INFORMATION)
        Else
        If %pRadioGroup1% Equal 4 (Message 4 INFORMATION)

Don't ya hate it when structure interferes with esthetics? Or maybe it's the other way around.

psc

Feb 3 2009, 01:08 PM

QUOTE (Ed_P @ Feb 3 2009, 06:04 PM)

Would this not work?

CODE

If %pRadioGroup1% Equal 0 (
   Message 0 INFORMATION
) Else (
   If %pRadioGroup1% Equal 1 Message 1 INFORMATION
) Else (
   If %pRadioGroup1% Equal 2 Message 2 INFORMATION
) Else (
   If %pRadioGroup1% Equal 3 Message 3 INFORMATION
)Else (
   If %pRadioGroup1% Equal 4 Message 4 INFORMATION
)

Although maybe this?

CODE

If %pRadioGroup1% Equal 0 (Message 0 INFORMATION)
   Else
   If %pRadioGroup1% Equal 1 (Message 1 INFORMATION)
     Else
     If %pRadioGroup1% Equal 2 (Message 2 INFORMATION)
       Else
       If %pRadioGroup1% Equal 3 (Message 3 INFORMATION)
         Else
         If %pRadioGroup1% Equal 4 (Message 4 INFORMATION)

Don't ya hate it when structure interferes with esthetics? Or maybe it's the other way around.

On the first view it sounds reasonable.
But two concerns:
#1: Also in 'standard' languages with nested If, Else (or similar) it is sometimes necessary to include begin - end or { - } or whatelse to tell the compiler the logical dependencies.
#2: The valid syntax which is used by WinBuilder, I explained in my post above. If a different syntax works, that may be fine, but can be changed in the next release. The developers only hold compatibility with valid syntax, not with wrong syntax which by random worked as wanted.

The difference is that in your suggestion every Else is related to the first 'If', in the current WinBuilder syntax to the actual 'If'.
What's 'valid'?

Not a concern, but #3:
Is there anything you cannot explain with the WinBuilder syntax?
If yes, please post a sample.

Peter

royalbox

Feb 3 2009, 04:10 PM

Thanks a lot chaps, I'm fairly used to the c/c++ way of doing it which doesn't use begin and end as I'm sure you know. Ed_P's 1st suggestion looks sensible to me, but if it's not the winbuilder way then I'll just do it the way Peter suggests and not worry about the redundant checking as it's only 5 or 6 checkboxes.

Thanks for your help.

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