stef1570
9th December 2011, 15:35
Hi all,
I have a problem with the mysql driver plugin.
I use Qt 4.7.4, MSVC 2008 and Windows 7 - 64 bit.
Source code is:
db = QSqlDatabase::addDatabase("QMYSQL");
Error code is:
Failed to connect to the database
Driver not loaded
Available drivers:
QSQLITE
QODBC3
QODBC
I tried to use both the 32 and 64 bit version of the libmysql.dll without success.
Available plugins in the plugins folder are:
C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers>dir *.dll
Il volume nell'unità C è Disco locale
Numero di serie del volume: BAB5-C1FD
Directory di C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers
14/11/2011 12:48 4.208.128 libmysql.dll
23/08/2011 16:07 416.256 qsqlite4.dll
23/08/2011 16:07 613.888 qsqlited4.dll
06/12/2011 15:51 58.880 qsqlmysql4.dll
06/12/2011 15:51 120.320 qsqlmysqld4.dll
23/08/2011 16:07 88.576 qsqlodbc4.dll
23/08/2011 16:07 162.304 qsqlodbcd4.dll
23/08/2011 17:01 119.808 qsqlpsql4.dll
23/08/2011 17:01 229.888 qsqlpsqld4.dll
9 File 6.018.048 byte
0 Directory 14.270.353.408 byte disponibili
The mysql plugin seems well compiled to me. What i did is:
QMAKESPEC=C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\mkspe cs\win32-msvc2008
cd %QTDIR%\src\plugins\sqldrivers\mysql
qmake "INCLUDEPATH+=C:\MySQL\include" "LIBS+=C:\MYSQL\lib\libmysql.lib" mysql.pro
nmake
and i got qsqlmysql4.dll and qsqlmysqld4.dll
qsqlmysqld4.dll exported function are (using dll export viewer)
qt_plugin_instance 0x1000126c 0x0000126c 1 (0x1) qsqlmysqld4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlmysqld4.dll Exported Function
qt_plugin_query_verification_data 0x100011b8 0x000011b8 2 (0x2) qsqlmysqld4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlmysqld4.dll Exported Function
qsqlited4.dll exported function (using dll export viewer)
qt_plugin_instance 0x10001410 0x00001410 1 (0x1) qsqlited4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlited4.dll Exported Function
qt_plugin_query_verification_data 0x100012cb 0x000012cb 2 (0x2) qsqlited4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlited4.dll Exported Function
It seems ok to me...
I red similar threads in the forum but no solution unfortunatly :(.
Has anybody solved this problem ?
Stefano
I have a problem with the mysql driver plugin.
I use Qt 4.7.4, MSVC 2008 and Windows 7 - 64 bit.
Source code is:
db = QSqlDatabase::addDatabase("QMYSQL");
Error code is:
Failed to connect to the database
Driver not loaded
Available drivers:
QSQLITE
QODBC3
QODBC
I tried to use both the 32 and 64 bit version of the libmysql.dll without success.
Available plugins in the plugins folder are:
C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers>dir *.dll
Il volume nell'unità C è Disco locale
Numero di serie del volume: BAB5-C1FD
Directory di C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers
14/11/2011 12:48 4.208.128 libmysql.dll
23/08/2011 16:07 416.256 qsqlite4.dll
23/08/2011 16:07 613.888 qsqlited4.dll
06/12/2011 15:51 58.880 qsqlmysql4.dll
06/12/2011 15:51 120.320 qsqlmysqld4.dll
23/08/2011 16:07 88.576 qsqlodbc4.dll
23/08/2011 16:07 162.304 qsqlodbcd4.dll
23/08/2011 17:01 119.808 qsqlpsql4.dll
23/08/2011 17:01 229.888 qsqlpsqld4.dll
9 File 6.018.048 byte
0 Directory 14.270.353.408 byte disponibili
The mysql plugin seems well compiled to me. What i did is:
QMAKESPEC=C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\mkspe cs\win32-msvc2008
cd %QTDIR%\src\plugins\sqldrivers\mysql
qmake "INCLUDEPATH+=C:\MySQL\include" "LIBS+=C:\MYSQL\lib\libmysql.lib" mysql.pro
nmake
and i got qsqlmysql4.dll and qsqlmysqld4.dll
qsqlmysqld4.dll exported function are (using dll export viewer)
qt_plugin_instance 0x1000126c 0x0000126c 1 (0x1) qsqlmysqld4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlmysqld4.dll Exported Function
qt_plugin_query_verification_data 0x100011b8 0x000011b8 2 (0x2) qsqlmysqld4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlmysqld4.dll Exported Function
qsqlited4.dll exported function (using dll export viewer)
qt_plugin_instance 0x10001410 0x00001410 1 (0x1) qsqlited4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlited4.dll Exported Function
qt_plugin_query_verification_data 0x100012cb 0x000012cb 2 (0x2) qsqlited4.dll C:\QtSDK\Desktop\Qt\4.7.4\msvc2008\plugins\sqldriv ers\qsqlited4.dll Exported Function
It seems ok to me...
I red similar threads in the forum but no solution unfortunatly :(.
Has anybody solved this problem ?
Stefano