crashed when call showMaximized() in constructor

[CMLDMR]

everything going well until the call showMaximized(), and then crashed.

affected version 2.2.0

[dfaure-kdab]

Can you give much more detail?

• Which executable? (did you try one of the KDReports examples?)
• Which OS? which compiler?
• How was KDReports built? (cmake options, which IDE)
• What's the backtrace of the crash?

[CMLDMR]

• it is my custom application
• windows 11 , msvc 14.34, Qt 6.3.1
• QtCreator IDE and default cmake options
• callgrind result is:

[dfaure-kdab]

Please rebuild both your application and KDReports in debug mode, so that the backtrace gives us more information.

[CMLDMR]

this is default rebuild cmake options with Qt6 enabled, rest options is default cmake:

Running C:\Qt\Tools\CMake_64\bin\cmake.exe -S H:/C/KDReports/kdreports-2.2.0 -B H:/C/KDReports/build-kdreports-2.2.0-Desktop_Qt_6_3_1_MSVC2022_64bit-Debug in H:\C\KDReports\build-kdreports-2.2.0-Desktop_Qt_6_3_1_MSVC2022_64bit-Debug. -- Performing Test CMAKE_HAVE_LIBC_PTHREAD -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed -- Looking for pthread_create in pthreads -- Looking for pthread_create in pthreads - not found -- Looking for pthread_create in pthread -- Looking for pthread_create in pthread - not found -- Found Threads: TRUE
-- Performing Test HAVE_STDATOMIC -- Performing Test HAVE_STDATOMIC - Success -- Found WrapAtomic: TRUE
-- Found WrapVulkanHeaders: C:/VulkanSDK/1.3.224.1/Include
-- Could NOT find KDChart-qt6 (missing: KDChart-qt6_DIR) -- Building KDReports 2.2.0 in Debug mode. Installing to C:/Program Files (x86)/KDReports -- KDChart not found. skipping the ChartXML example -- The following OPTIONAL packages have been found:

• Qt6Core (required version >= 6.0.0)
• Qt6WidgetsTools (required version >= 6.3.1)
• Vulkan
• WrapVulkanHeaders
• Qt6GuiTools (required version >= 6.3.1)
• Qt6Widgets (required version >= 6.0.0)
• Qt6PrintSupport (required version >= 6.0.0)
• Qt6Xml (required version >= 6.0.0)
• Qt6CoreTools
• Qt6Sql

-- The following REQUIRED packages have been found:

• Qt6Test

-- The following OPTIONAL packages have not been found:

• KDChart-qt6

-- Configuring done -- Generating done -- Build files have been written to: H:/C/KDReports/build-kdreports-2.2.0-Desktop_Qt_6_3_1_MSVC2022_64bit-Debug Elapsed time: 00:02.

[dfaure-kdab]

This isn't a backtrace. The first screenshot, but in debug mode, is what we need.

[CMLDMR]

this is debug mode

[dfaure-kdab]

See the qFatal from Qt, in the QWidget constructor.

Are you creating a QApplication in main()? My guess is that this is what's missing.

[CMLDMR]

Yes Created.

[CMLDMR]

how can I see qFatal in QWidget, is it step by step in debug mode?

[dfaure-kdab]

"Application Output" tab, no?

[CMLDMR]

yes you are right but QApplication called firstly, can you check it from below github link. it small project

https://github.com/CMLDMR/FaaliyetReporter/tree/on_bilgi_giris

[dfaure-kdab]

This is clearly not a KDReports problem.

For me to help further, I would have to indeed debug into your application, which isn't something I can do for free.

Please contact info@kdab.com to get a consulting offer.