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Invalid Picture in Image Control?
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Versions des environnements
Visual FoxPro:
VFP 8 SP1
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
Visual FoxPro
Divers
Thread ID:
01205569
Message ID:
01205575
Vues:
29
Hi Rodd,

VFP usually returns an error when an Image object receives a corrupt image file.

So, you can use a simple TRY/CATCH and trap an error.

You can also try using LOADPICTURE()
TRY 
   xObj_Picture = LOADPICTURE(xCaminho_jpg) 
   WAIT WINDOW 'IMAGE IS OK' 
CATCH    
   WAIT WINDOW 'ERROR LOADING IMAGE !' 
ENDTRY
Calvin Hsia also provides some suggestions on this respect:
http://blogs.msdn.com/calvin_hsia/archive/2005/07/24/442873.aspx

Hope this helps

Cesar


>I'm trying to determine if the image that I assign to the Picture value of an image control is actually being displayed. In other words, if the user selects a corrupt image file to be displayed on the form in my image control, it won't be displayed. I want to be able to trap that and provide some feedback to the user so they don't think the form isn't working.
>
>Is there a way to trap this?
>
>As far as I can tell, the image control provides no feedback regarding invalid files ... it just doesn't display the picture. I'm already checking the extension and looking at the first 4 characters of the file to try to determine if they've selected a true image file. But none of this protects against corrupted image files.
>
>I'm working in VFP 8 but could switch to 9 if there were a way to do this in 9.
>
>Thanks for any help you can provide.
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