Journal str = GetInputString(s1, s2, input_str) how to distiguish between cancel and nul string

[Ehaviv]

Hi

One of the user alowed input is nul string So in the following command

str = GetInputString(s1, s2, input_str)

How I can distiguish between a 'cancel' and a 'nul string'

Thanks in advanced

 

[cowski]

One trick is to use a single space character as the initial input string; if the user presses OK, the single space string will be returned, if the user presses cancel, a null string will be returned.

http://www.nxjournaling.com/content/user-input-input-boxes

www.nxjournaling.com

 

[Ehaviv]

My journal use the iput_str to display info to the
User and the user can change or delete this info
So I can not use a space

Thank you for the this respont

 

[cowski]

Is a null string a valid response from the user? If so, I don't know of a good way to distinguish between a "cancel" operation or a null input operation. Perhaps a custom input form would solve your issue.

www.nxjournaling.com

 

[Ehaviv]

yes I was suspected that
Do I can insert a custom form inside a loop
My journal is going to repeatedly let the user
select something and the journal will display adequate
info and the user can change or delete this info

Thank you for trying to help

 

[cowski]

Do I can insert a custom form inside a loop

If you have a block styler license, you should probably use that. If you are working on a Windows machine with no block styler license, you can use a Winform:

http://www.nxjournaling.com/content/using-winforms-journals

I've heard of others creating custom input forms through Java or Python, but I don't have any examples of that.

www.nxjournaling.com

 

[Ehaviv]

If I take the example from

http://www.nxjournaling.com/content/using-winforms...

Do I can do this

While SelectNoteorLabel(obj, cursor) = Selection.Response.Ok

'My code here

'display our form
myForm.ShowDialog()

If myForm.Canceled Then
'user pressed cancel, exit journal
Return
Else
'user pressed OK, assign value from form to part attribute
_attributeValue = myForm.AttributeValue
workPart.SetUserAttribute(_attributeTitle, -1, _attributeValue, Update.Option.Later)

End If

'My code here

End While

Thank you again

 

[cowski]

I'm not sure that exact code will run as-is, but you should be able to accomplish what you need with something similar.

www.nxjournaling.com

 

[Ehaviv]

I understand
OK
thank you