QODBC driver

[hamidarr]

hi everybody i write an application with qt 4.7 in windows 7 that connect to mssql 2008 on remote server .i need use this application on windows xp but when i execute exe file in windows xp it generate an error driver not loaded.in windows 7 i install sqlserver 2008 and create odbc connection and it run without error. i do'nt want in windiws xp setup qt sdk and sql server 2008.how can i run my program that can connect to mssql remote server?

[mcosta]

This is a "deployment" problem.

Read here and here for details

[Aleksandar]

When You compile and link your files using Qt Editor, Qt will create folder: C:\....\MyProject-build-desktop\debug
Inside this folder there will be MyProject.exe file.
You must copy into this folder some dll files.
You can find dll files here: c:\QtSDK\Desktop\Qt\4.7.3\mingw\bin\
Into debug folder You must copy 4 files that are needed by any Qt app. Those files are:
1. libgcc_s_dw2-1.dll
2. mingwm10.dll
3. QtGuid4.dll
4. QtCored4.dll

I'm not quite sure about next steps because I was doing this in earlier versions of Qt, but here is how I was doing it:
Copy this folder: c:\QtSDK\Desktop\Qt\4.7.3\mingw\plugins\sqldrivers \ into your debug folder(the folder that contains MyProject.exe file)
Just in case copy these dll files into your debug folder:
1. QtSqld4.dll
2. QtSql4.dll
(These two files location is c:\QtSDK\Desktop\Qt\4.7.3\mingw\bin\)

Edit your .pro file by adding this code: QT += core sql

Qt Code:

QT       += core gui\
           += core sql  //THIS IS WHAT YOU NEED TO ADD
 
TARGET = MyProject
TEMPLATE = app
 
 
SOURCES += main.cpp\
        mainwindow.cpp \
.
.
.

QT       += core gui\
           += core sql  //THIS IS WHAT YOU NEED TO ADD

TARGET = MyProject
TEMPLATE = app


SOURCES += main.cpp\
        mainwindow.cpp \
.
.
.

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Copy your debug folder to PC without installed Qt and run MyProject.exe file. If the problem persist after that notify me, and we shall see what to do next.

[marcvanriet]

As a side remark, I wouldn't use the debug build on a different machine.

Since the program starts on the other machine, I would think it has no problems with finding the QtGui and QtCore DLL's. Rather it may just be a matter of putting the plugins in the right place. You find the plugin DLLs to copy in your Qt directory \plugins\sqldrivers.

Best regards,
Marc