Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Where object dropped on form is instantiated?
Message
 
 
To
23/02/2010 09:32:18
General information
Forum:
Visual FoxPro
Category:
Other
Environment versions
Visual FoxPro:
VFP 9 SP1
Miscellaneous
Thread ID:
01450463
Message ID:
01450473
Views:
44
>>>>Hi,
>>>>
>>>>I dropped an object (class) on a form. Then in the form LOAD method I check if this object is NULL as following:
>>>>
>>>>isnull( thisform.MyObject )     && Returns .F.
>>>>type( "thisform.MyObject" )   &&  Returns "O"
>>>>
>>>>
>>>>So I presumed that the object is instantiated in the LOAD method of the form. But when I call a method of this object in LOAD method of the form, I get error that the object does not exist. Does it mean that the object is fully instantiated only in the INIT method of the form?
>>>
>>>Yes
>>>
>>>But you can add the object in the load() of the form prior to using it
>>
>>You mean by instantiating the object as the following?
>>
>>thisform.MyObject = newobj("MyObjectClass","ClassLib")
>>
>
>
>yes - or -
>
>this.NewObject('MyObject', "MyObjectClass", "ClassLib")
>
Thank you, Gregory. This is what I will have to do. The only downside of this method (not a big deal though) is that I have to set all properties in code, instead of visually. Also, I have to set the object to NULL in the UNLOAD whereas if you drop the object it is destroyed automatically.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform