Qt app for windows XP

[JonB]

@LeLev said in Qt app for windows XP:

i found one in folder c:\windows\system32 , the version is 7.0.2600.5512

Based on nothing, my Windows 7 one is 7.0.7601.17704, dated 16/12/2011. It shows there does at least exist a later one, though how that relates to XP I don't know.

If you know how to use a tool to look at what functions are in/exported from a DLL, you could verify that sprintf_s is indeed missing in yours.

normally i am not supposed to do any updates/changes in the system but i will see it with my hierarchical superior i guess...

I still maintain that the most likely is the SO post I pointed you at earlier. I point you at https://answers.microsoft.com/en-us/windows/forum/all/xp-sp3-update-021319-posready-2009-caused-a/d4546883-2d07-4688-b00d-4c74801b65cb or https://community.teamviewer.com/t5/General-Questions/XP-and-Teamviewer/td-p/54530 too, which I think is the same thing. At least whether you have those patches? Show this to your "hierarchical superior" :)

Otherwise, it could be a MinGW issue. Can't find exact match, but https://stackoverflow.com/questions/30590421/qt-5-4-0-deployment-issue-missing-vsprintf-s-in-msvcrt-dll/32320444.

[ODБOï]

@JonB said in Qt app for windows XP:

you have those patches?

i try to see patches list using systeminfo.exe in terminal

it returns :

1 Hotfix installed : Q147222

[ODБOï]

downloading
http://download.qt.io/new_archive/qt/5.6/5.6.0/qt-opensource-windows-x86-msvc2013-5.6.0.exe.mirrorlist
to give it a try

[hskoglund]

@LeLev Don't forget that line in your .pro file:

QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

P.S. Just tried an empty vanilla Qt 5.6.3 MinGW49_32 QtQuick QML project (where you see Hello World in the middle of 640x480 window. Built on Windows 10 and tested on Windows XP, worked fine without that sprintf_s error, the msvcrt.dll on that Windows XP has version 7.0.2600.5512.

Anyway, since MSVC2013 is Microsoft own stuff, it's more likely to survive as the years go by :-)

[JonB]

@hskoglund said in Qt app for windows XP:

worked fine without that sprintf_s error, the msvcrt.dll on that Windows XP has version 7.0.2600.5512.

That should be interesting reading for @LeLev !

[hskoglund]

That misbehaved update from Microsoft last year which caused the sprintf_s error, it seems not to have touched msvcrt.dll directly, but rather some other files, but msvcrt.dll got the raw deal :-(

msvcrt.dll is somewhat of an unwanted child from Microsoft's point of view, for example here's what Raymond Chen writes: https://devblogs.microsoft.com/oldnewthing/20140411-00/?p=1273

[ODБOï]

guys thank you very much for help and thank you for your time

[ODБOï]

@hskoglund said in Qt app for windows XP:

for example here's what Raymond Chen writes: https://devblogs.microsoft.com/oldnewthing/20140411-00/?p=1273

a real nightmare the story of this dll, just like my day ^^

[ODБOï]

@hskoglund said in Qt app for windows XP:

Don't forget that line in your .pro file:
QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

i have error in compilation output saying
g++: error: /SUBSYSTEM:WINDOWS,5.01: No such file or directory

if i add this to my pro file
QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

[hskoglund]

That line is only applicable if you use the MSVC2013 compiler

Edit: to satisfy both compilers, we can use a prefix, change the line to

win32-msvc:QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

[ODБOï]

@hskoglund said in Qt app for windows XP:

QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

oh ok! my bad, i was still trying with minGw

[ODБOï]

@hskoglund , @JonB

apparently qt-opensource-windows-x86-msvc2013-5.6.0 that i just installed doas not configure kits automatically,

i have no compiler and no debugger in the kit, so i cant compile the project

do i have to download the compiler separately ? i dont see it in my qt 5.6 install dir C:\Qt\Qt5.6.0\5.6\msvc2013\bin nor in C:\Qt\Qt5.6.0\Tools\

compiler column is empty here..
https://doc.qt.io/archives/qt-5.6/supported-platforms.html

[hskoglund]

@LeLev try
https://visualstudio.microsoft.com/vs/older-downloads/

[ODБOï]

@hskoglund ok i will download vs2013 and try to use the c++ compiler from it
thank you

[hskoglund]

If, after you've installed MSVC2013, you cannot persuade Qt to recognize that compiler/kit, one workaround is to uninstall Qt 5.6 MSVC2013 and then install it in Qt again.

[ODБOï]

@jsulm @hskoglund @JonB
Thank you so much!
my application now works on XP.
all i have to do now is re-write most of the qml code because i have to switch from qt quick controls 2 to controls 1

[hskoglund]

@LeLev Now there's one reason to try 5.7 instead of 5.6 (I use MSVC2013 with Qt. 5.7.1 for Windows XP) because I think qt quick controls 2 works in 5.7...

[ODБOï]

@hskoglund good, maybe i will try it. But i already adapted everything to work with controls 1
thank you for the information.
Right now im trying to "optimize" some things because the application is very slow on the XP, i guess it will be even slower if i use controls 2