Most of the examples fail to launch with MSVC2019 + Qt5 environment

[waka4g]

After successfully building this excellent library using CMake, following the comprehensive documentation provided, I attempted to run the example applications. However, most of these applications fail to launch. (Exceptions are "jkqtptest_jkqtmathtext_simpletest.exe" and "jkqtptest_jkqtmathtext_test.exe". I was able to launch these two applications.)

Environment

• MSVC 2019 (16.11.33)
• Qt 5.15.2 msvc2019_64
• CMake 3.27.4
• Windows 10 22H2
• JKQtPlotter v4.0.2

Actual Behavior

After a successful build, tried to launch the example applications.

• Double-clicked on the application icon. No response or error message.
• Attempting to launch the applications from the command prompt. Again, no response or error message.
• Exceptions are "jkqtptest_jkqtmathtext_test.exe" and "jkqtptest_jkqtmathtext_simpletest.exe". I was able to launch these two applications.

Additional Information

When attempting to launch the "jkqtptest_simpletest.exe" application via the debugger, an Access Violation error occurs. The debugger indicates that this issue arises at line 458 in the file "jkqtmathtexttools.cpp". A screenshot of the debugger output (sorry but in Japanese) is attached for reference.

Any guidance or suggestions to resolve this issue would be highly appreciated.

[jkriege2]

Hi!

yes, I can confirm the problem ... very stange ... I don't see it with Qt6 though ... do you need to rely on Qt 5?

Best, JAN

[waka4g]

do you need to rely on Qt 5?

No, I don't. It's great news for me that this issue does not occur with Qt6. I will take this opportunity to migrate to Qt6!

Thank you very much.

[jkriege2]

... I have to correct myself: interestingly this bug does not appear in Qt6 or gcc ... because I ound a problem in the code you screenshot above: Inside the functor a line JKQTMathTextFontSpecifier fontSpec; was mising ... so I don't know at all, why this code compiled, as the outside fontSpec instance should not be accessibly without a capture-clause ... ver strange ... anyways, I fixed the problem and the current master should be fine also with Qt5 and MSVC (at least it worked for me).

See https://github.com/jkriege2/JKQtPlotter/commit/ef07a02e9bb0a1697c7b6f96316c243980b46100 for the fix