Re: [wxCode-users] wxpdfdocument exception handling

[Ulrich T. <ulr...@gm...>]

Paul,

Am 26.12.2013 14:57, schrieb pao_drop:
> I am writing a pdf file using the SaveAsFile() method of wxPDFDocument.
> This works quite well, but how can I handle a file writing error (for
> instance, trying to write into a protected directory...)?
> The return type of SaveAsFile() is void, and it does not appear to throw
> any exception?

As far as I can remember wxWidgets itself shows an error message through 
wxLogError if the write operation fails. Maybe not the ideal solution.

> So how can I manage this case?

You should verify that the file of which you path the name to method 
SaveAsFile is indeed writable, before calling SaveAsFile.

In my own applications I sometimes let method SaveAsFile write to a 
temporary file and rename the file thereafter. If renaming fails I issue 
an appropriate error message and let the user choose what to do - either 
retry (if the file was locked by another application) or choose a new 
file name.

Regards,

Ulrich