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[johny10151981]

Hi,
I have attached a program source with the question. I am not comfortable with C++. But the program is giving a strange problem.
problem 1:
It work nice in debug mode. but when i try to compile in release it generates error. No idea why is that.
problem 2:
the second problem was asked before but didnt got any real solution. focusing problem. focus is not changing by pressing TAB button
(its not a big program or its not under any big plan. Just trying to be more comfortable with OOP)
Any suggestion, criticism will be appreciated.
Best Regards,
Johny

[Banfa]

If you are getting errors then you should post them.

[johny10151981]

Yes, My bad

1>------ Build started: Project: mysql_manager, Configuration: Release Win32 ------
1>Compiling...
1>stdafx.cpp
1>Compiling...
1>username_password.cpp
1>.\username_password.cpp(12) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(15) : error C2673: 'getPassword' : global functions do not have 'this' pointers
1>.\username_password.cpp(15) : error C2227: left of '->password' must point to class/struct/union/generic type
1>.\username_password.cpp(17) : warning C4172: returning address of local variable or temporary
1>.\username_password.cpp(20) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(23) : error C2673: 'getPortAddress' : global functions do not have 'this' pointers
1>.\username_password.cpp(23) : error C2227: left of '->port' must point to class/struct/union/generic type
1>.\username_password.cpp(24) : warning C4172: returning address of local variable or temporary
1>.\username_password.cpp(27) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(30) : error C2673: 'getServerAddress' : global functions do not have 'this' pointers
1>.\username_password.cpp(30) : error C2227: left of '->server_address' must point to class/struct/union/generic type
1>.\username_password.cpp(31) : error C2673: 'getServerAddress' : global functions do not have 'this' pointers
1>.\username_password.cpp(31) : error C2227: left of '->server_address' must point to class/struct/union/generic type
1>.\username_password.cpp(33) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(36) : error C2673: 'getUserName' : global functions do not have 'this' pointers
1>.\username_password.cpp(36) : error C2227: left of '->username' must point to class/struct/union/generic type
1>.\username_password.cpp(37) : error C2673: 'getUserName' : global functions do not have 'this' pointers
1>.\username_password.cpp(37) : error C2227: left of '->username' must point to class/struct/union/generic type
1>.\username_password.cpp(41) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(43) : error C2673: 'setPassword' : global functions do not have 'this' pointers
1>.\username_password.cpp(43) : error C2227: left of '->password' must point to class/struct/union/generic type
1>.\username_password.cpp(46) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(48) : error C2673: 'setPortAddress' : global functions do not have 'this' pointers
1>.\username_password.cpp(48) : error C2227: left of '->port' must point to class/struct/union/generic type
1>.\username_password.cpp(51) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(53) : error C2673: 'setServerAddress' : global functions do not have 'this' pointers
1>.\username_password.cpp(53) : error C2227: left of '->server_address' must point to class/struct/union/generic type
1>.\username_password.cpp(55) : error C2653: 'username_password' : is not a class or namespace name
1>.\username_password.cpp(57) : error C2673: 'setUserName' : global functions do not have 'this' pointers
1>.\username_password.cpp(57) : error C2227: left of '->username' must point to class/struct/union/generic type
1>password_window.cpp
1>.\password_window.cpp(13) : error C2061: syntax error : identifier 'username_password'
1>.\password_window.cpp(29) : warning C4312: 'type cast' : conversion from 'LONG' to 'connection *' of greater size
1>.\password_window.cpp(34) : warning C4244: '=' : conversion from 'wchar_t' to 'char', possible loss of data
1>.\password_window.cpp(38) : warning C4800: 'char' : forcing value to bool 'true' or 'false' (performance warning)
1>.\password_window.cpp(41) : error C2065: 'up' : undeclared identifier
1>.\password_window.cpp(41) : error C2227: left of '->setPassword' must point to class/struct/union/generic type
1>        type is ''unknown-type''
1>.\password_window.cpp(42) : error C2227: left of '->setPortAddress' must point to class/struct/union/generic type
1>        type is ''unknown-type''
1>.\password_window.cpp(43) : error C2227: left of '->setServerAddress' must point to class/struct/union/generic type
1>        type is ''unknown-type''
1>.\password_window.cpp(44) : error C2227: left of '->setUserName' must point to class/struct/union/generic type
1>        type is ''unknown-type''
1>.\password_window.cpp(46) : warning C4244: '=' : conversion from 'wchar_t' to 'char', possible loss of data
1>.\password_window.cpp(52) : warning C4800: 'char' : forcing value to bool 'true' or 'false' (performance warning)
1>.\password_window.cpp(73) : warning C4800: 'ATOM' : forcing value to bool 'true' or 'false' (performance warning)
1>.\password_window.cpp(147) : warning C4311: 'type cast' : pointer truncation from 'connection *' to 'LONG'
1>.\password_window.cpp(160) : warning C4311: 'type cast' : pointer truncation from 'connection *' to 'LONG'
1>mysql_manager.cpp
1>Build log was saved at "file://c:\Users\johny\Desktop\softback\vc\mysql_manager\mysql_manager\Release\BuildLog.htm"
1>mysql_manager - 34 error(s), 10 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

[Banfa]

It is because of your use of pre-compiled headers only for the release build. The debug build does not use pre-compiled headers.

When you do use pre-compiled headers then the pre-compiled headers must be the first thing included in the file. My Visual Studio (2008 which is newer than yours) emits this warning

1>.\username_password.cpp(1) : warning C4627: '#include "username_password.h"': skipped when looking for precompiled header use
1>        Add directive to 'stdafx.h' or rebuild precompiled header

Which hints at it, in username_passwo rd.cpp at the top you have

#include "username_password.h"
#include "stdafx.h"

You need to reverse the order that the headers are included to

#include "stdafx.h"
#include "username_password.h"

You have the same issue in password_window .cpp.

Also these 2 warnings

1>.\username_password.cpp(17) : warning C4172: returning address of local variable or temporary
1>.\username_password.cpp(24) : warning C4172: returning address of local variable or temporary

Are indicative of a serious error in your program, you need to fix them.

[johny10151981]

Hi,
Thanks it worked. But I think I would have think a little more to understand why it act like that.

order of file including. never faced it before,

Thank you very much.
Best Regards,
Johny

[Banfa]

It's all to do with pre-compiled headers. Normally order of header inclusion does not matter, except for making sure things used in 1 header have already been included.

However with pre-compiled headers the compiler has run over just the headers in a specific file, or order to use the output of the pre-compilation all the other files must start with the same headers otherwise it doesn't work.

BTW in such a small project I would just switch off pre-compiled headers it just confuses the build process.

However in a project with a large number of files it is worth using because it can have a significant effect on the amount of time it takes to build the project.

[johny10151981]

HI,
I understand your point completely.

By the way. The tab focusing problem is still in there. If someone can help...