For those who end up looking here :
It seems that this is a Qt 5.6 bug, it works fine in Qt 5.14

Edit :
The bug itself may be related to the use of QSurfaceFormat::setDefaultFormat after application startup : Qt 5.14 warned me about a piece of code I was not aware saying that it could cause context sharing issues. Having it removed seems to have solved the bug when i got back to Qt 5.6

@Yash001

That is beyond my experience level. No help possible from my side.

@JonB
I'm sorry, I thought it would be helpful if people saw the entirety of the code. I didn't know which part of the code I was lacking.

Ohhh. thank you for the instruction. I'll work on the changes.

@SGaist Thank you for answer. From your suggestion, I need to create my own Dialog box.

@Konstantin-Tokarev The problem has been solved. I change the float strategy from neon to vfpv3 and everything works well.

http://doc.qt.io/qt-5/plugins-howto.html#the-low-level-api-extending-qt-applications

@mrjj yes. Everything correct. Thanks for the help

@KroMignon said in Update from Qt 5.4.2 to 5.6.3 on Windows7/XP:

Is some one aware about those issues?

Probably it is better to check on JIRA if those are known issues.

@KroMignon said in Update from Qt 5.4.2 to 5.6.3 on Windows7/XP:

Is here the right place to post this kind of questions?

Also on JIRA you may find already work arounds or discussions.

If you do not get feedback within a reasonable time frame, you may want to check with the developer mailing list.

@jsulm
unfortunately, same error...

Hello @SGaist,

Thanks for the tip I will post also on the interest mailing list.

Nevertheless I did not modified the qt sources and builds were working fine after compilation for Linux 32 bits and QNX, I just had to add QtWebKit from the community release because it is not a part of official release anymore.

Actually for QtWebkit on QNX, the app seems have found the module but not the proper version (3.0). For Virtual Keyboard I did nothing more than compiling and try to use the exemple provided with Qt sources, first on Linux 32 bits then on my QNX arm v7 target. I did that with several others QML examples also provided with Qt sources and I did not encounter that kind of behaviour, no other modules where missing.

Maybe i missed something on my target configuration (libs install, Path, ...), I just would like to know if there is a way to list which modules and version are properly installed on a specific system (Linux, QNX).

@mvuori Tried to build *.apk on Qt 5.7.0 RC - the same error. I think, that bug for a long time.

Apologies to Diamond Platypus, I must not have had this post flagged as watch.

Anyway, I did add:

QMAKE_CXXFLAGS += -static-libgcc -static-libstdc++

To my .pro file

I still have missing dlls:

libgcc_s_dw2-1.dll
libwinpthread-1.dll
libstdc++-6.dll

I had issues making these solutions work for the QML TreeView. I ended up setting the root path of my QFileSystemModel to the directory I wanted to view. Then I set the rootIndex in the TreeView to the parent of the index for that directory. This is of course showed its siblings. Then I did the following to filter those siblings away. I also made this optional through a property as there are times when I want that behavior:

bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const { FileSystemModel* tmodel = qobject_cast<FileSystemModel*>(parent()); if(tmodel){ QModelIndex index = tmodel->index(source_row, 0, source_parent); QModelIndex rootIndex = tmodel->index(tmodel->rootPath()); if(!rootIndex.isValid() || !index.isValid()) return false; return ((index == rootIndex) || !(tmodel->filtersiblings() && isSiblingOf(index, rootIndex))); } return false; } bool isSiblingOf(const QModelIndex& index, const QModelIndex& parent) const { if(!index.isValid() || !parent.isValid()) return false; QModelIndex sibling; int row=0; do{ sibling = parent.sibling(row,0); if(sibling == index) return true; ++row; }while(sibling.isValid()); return false; }

I took more of a blacklist approach versus a whitelist approach.

@Zakaria Thanks! Still working in 5.9.2.

Hi and welcome to devnet,

How did you compile that module for your BBB ?