QDataWidgetMapper not repopulating fields in production

scarleton

I am using QDataWidgetMapper to map a bunch of fields on a form. On my development machine, everything works as expected:

Open form

Add Data

Save Form (data to SQLite Db)

Reopen form

Data is displayed

When I run the software in a clean virtual machine and customers run it in their environment, the data is never displayed. I am thinking that I am missing a DLL that is not required. Here is what I am shipping right now:

QtCore4.dll
QtGui4.dll
QtGuid4.dll
QtNetwork4.dll
QtScript4.dll
QtSql4.dll
QtSvg4.dll
QtXml4.dll

Any suggestions on why it isn't working in production?

cincirin

You will also need to ship qsqlite.dll in sqldrivers subfolder.

QtCore4.dll
QtGui4.dll
...
sqldrivers
...................... qsqlite.dll

SGaist

Hi,

Besides the potentially missing plugin, do you create the initial database in your program or is it provided with your executable ?

scarleton

I do have the qsqlite4.dll, along with all the imageformats plugins. Is there anything else I might be missing? Any other suggestions, other than missing DLL's, on why this doesn't work in production?

SGaist

Are you sure you put the dlls in the correct place ?
i.e:
plugins/imageformats
plugins/sqldrivers

The hierarchy is important

scarleton

here is the thing that is strange: The DB is being used by 2 other processes on the machine (bad idea with SQLite, I know, I am working on moving to a different DB) and in general, all works well. The Qt program generally works well, too, except in this one case. That is why I was thinking there might be some DLL that helps implement the QDataWidgetMapper functionality or something. If it isn't a missing DLL, then the only thing I can figure it that I am not clearing something in the release code that I am in development.

I do jump between C# and C++, in the C# world it is bad to initialize variables to null/zero, so... I might have forgotten to initialize something in the Qt class, think I will go double check:)

Sam