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Detect state of memofield and textbox
Message
From
16/11/2012 04:45:14
 
 
To
16/11/2012 04:39:03
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
01557010
Message ID:
01557414
Views:
45
>>>>>>>>Karen,
>>>>>>>>
>>>>>>>>clearly there is some misunderstanding here. The thing is that m is a reserved word, since you can use it to tell that what comes after it plus a dot is variable, even though a field may have the same name. Like if you have opened a table with a field called XX with a value of 5, and a variable called XX with a value of 10. Now you see the following:
>>>>>>>>?5*XX && 25 since a field has precedence
>>>>>>>>?5*m.XX && 50 since m. tells VFP to use the variable XX.
>>>>>>>>Also note that m alone is not allowed as a variable name, and it's also not allowed as an alias. And a field named m would most likely be asking for real trouble,
>>>>>>>>
>>>>>>>
>>>>>>>>Also note that m alone is not allowed as a variable name
>>>>>>>> And a field named m would most likely be asking for real trouble,
>>>>>>>
>>>>>>>
>>>>>>>Says who ?
>>>>>>
>>>>>>Check Reserved Words in Help.
>>>>>
>>>>>
>>>>>There are (hardly) reserved words in foxpro, ie foxpro does not enforce them
>>>>>
>>>>>(reserved) words become significant, ahem reserved, in the context
>>>>>
>>>>>
>>>>>local if
>>>>>if = 2
>>>>>if if == 2
>>>>>	? 'if = 2'
>>>>>endif
>>>>>
>>>>
>>>>If you want to live on the edge, try this, and play with the values.
>>>>Create Cursor _screen (height i, width i, left i, visible l)
>>>>Insert Into _screen (height, width, visible) Values (500,500,0,.t.)
>>>>Browse
>>>
>>>
>>>This does not prove in any way that the following claim is right
>>>>>>>>Also note that m alone is not allowed as a variable name
>>
>>OK, I confess that I didn't check this, and I may be wrong. Just like I haven't tested using any of the other about 1000 reserved words as variable names. Microsoft has written the following warning, which I try to follow: When programming, avoid using reserved words as names for window, table, or field names. If you use a reserved word as a name, it might generate a syntax error.
>
>
>I always test before posting
>
>As to 'reserved' words. Foxpro does not have 'reserved' words, if it had the following would not be possible
>
>if = 2
>
I suggest you contact Microsoft, if you really want to waste anyone's time. :-)

NB! No offense...!
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