Qt app for windows XP

JonB

@LeLev
I am not convinced you will be able to resolve this via compile-time #define. The implication of

the procedure entry point sprintf_s could not be located in msvcrt.dll

is that it might be being loaded dynamically via LoadLibraray()/GetProcAddress().

Have you tried/are you allowed to try @jsulm's suggestion of getting a better version of msvcrt.dll? That would be preferable. How many copies of that file do you have on your system (there may be multiple), and what is their exact version (you can see that from File Explorer Properties)?

hskoglund

Yeah, it's much better to put it the .pro file, try:

DEFINES += "sprintf_s=_snprintf"

ODБOï

@JonB said in Qt app for windows XP:

Have you tried/are you allowed to try @jsulm's suggestion of getting a better version of msvcrt.dll?

my superior will be back on Monday so sadely i can't try that for the moment..

@JonB said in Qt app for windows XP:

How many copies of that file do you have on your system

i found one in folder c:\windows\system32 , the version is 7.0.2600.5512
not sure how to search/find the others, im trying to find out
edit: searching in progress using XP search tool

i have 5 in total :
versions
7.0.2600.5512
7.0.2600.0
7.0.2600.5512
6.0.8337.0

@hskoglund said in Qt app for windows XP:

DEFINES += "sprintf_s=_snprintf"

unfortunately this still does not solve the issue

JonB · i have 5 in total : versions 7.0.2600.5512 7.0.2600.0 7.0.2600.5512 6.0.8337.0

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

@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...