I found a solution for my problem.
I had to set renderType=Text.QtRendering to solve the issue.
With Qt 5.4.2, I had to set renderType=Text.NativeRendering

Very strange to me, but works ;)

Regards

Fabrice

Here is pretty much the commands I use to deploy the app:

qmake videoplayer/videoplayer.pro -o build/MakeFile -r -spec win32-msvc2010 -nocache jom -f Makefile -s windeployqt --release release

Ok, it sounds like a bug then.
Good if you open ticket.
Make sure to include a small complete working example they can use
to reproduce it.

@HansVL
nope, thats conform with my 10.1 experience

I found a solution here, https://stackoverflow.com/questions/24720458/failed-to-install-qt-5-visual-studio-add-in

to delete the registry key [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Qt Visual Studio Add-in 1.1.11 – C:_Program Files (x86)_Qt4VSAddin]

But it wouldn't delete in regedit..

Then I found https://www.raymond.cc/blog/full-control-permission-to-delete-or-edit-restricted-windows-registry/

And one of raymond's suggestion.. Registrar registry manager, was able to rename/delete the key. I renamed it and then I was able to install it.

Latest drivers ?

@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.

The best way and easier is to compile your program into a virtual machine (https://www.virtualbox.org/)

It now says Qt Webengine component is only supported for MSVC 2017, took me a while to figure out.

@VRonin said in Send arrow keys via QProcess in any platform:

@Mark81 Then do you really need Qt? there are already mature tools to do those kind of things, for windows: http://ahkscript.org/ and for linux: http://www.semicomplete.com/projects/xdotool/

I don't need Qt for this. But I have a quite large application that does a lot of things. One of those, is to launch external applications and send them keystrokes as you would type in front of a keyboard.

@BruceNaylor Hmm that's interesting! I posted on the C++ Gurus forum and a couple guys there suggested I use the MinGW that gets installed with QT Creator (when you select that option) and that actually fixed my issue with registry keys. I was going to give cross compiling another try on Windows, maybe your fudges will fix some other issues I've into. I appreciate the suggestions!

Thanks. For now I found it easier to solve my problem by using an offline installer, which worked fine. But I'll keep your advice in mind for the future.

@Wieland No, we are using the <video> tag in HTML5, together with JS to play webM format video. With 5.6, the video goes up all the time till the system crashes.

The problem is disappeared in 5.7 with newer Chromium core, but it leads out a new problem as indicated the https://bugreports.qt.io/browse/QTBUG-53411.

When we use 5.7, the memory is fairly stable, but then after the first run, the JS will fail to work with the application due to a bug in QwebchannelTransport.

We tried to build QT from source code, but the WebEngine won't build (see my other post).

We are looking for a compiled WebEngine module with the bugs fixed as indicated in the QTBug-53411.

Thank you.

I did install the one coming with the Qt package, there is no other version installed.

offline and MinGW

Indeed, debug build should work as well. Hmmm, try switching to Debug, and do Clean All, run Qmake, Rebuild All. Maybe do that twice for good measure.
Anyway, now you're up and running in Release mode, happy VLC hacking!

Hi, I want change icon of tab when one page is selected (arrow at right) and for the other arrow at bottom.
I think it's the same way to do this.

I tried :

QToolBox > QAbstractButton{ background-image: url(:/icones/deleteRed); image: url(:/icones/deleteRed); }

But nothing happend.

@SGaist Will do. Thank you!

Thanx bro

@Sargamon
Once your problem is solved please use the Topic Tools button to mark as Solved.
Thank you!

I just noted that without the '*' it does work, in other words, the following works:

QFrame[styleAsPresetPanel="true"] QPushButton, QFrame[styleAsPresetPanel="true"] QCheckBox { /* stylesheet */ }

Allthough this is enough for me to continue for now, my original question remains. I'd expect this to work with the '*' as well, but that doesn't seem to work. Is that a bug I should file, or are my expectations wrong?

@koahnig
Yes .

@maximus Yes, I decided not to do it.

Hi @JKSH, @Leonardo,

Many thanks for your tips and apologies for delay. I got distracted by another task, but will get back to this one again.

Just to report what happened so far. All my attempts on one machine failed. Switching to another computer I managed to to statically build Qt and Qt Creator once (using your receipts), but failed to reproduce that again. I'm putting all this down to my inexperience on Windows platform. However, I have learnt a lot and I'll get back to this problem again.

BTW, working with VS is not as scary as it originally looked :-). Once I managed to install it, that is. The installation of VS was a pain as due to my inexperience and some bugs. E.g. installing VS via RDC produces a transparent window - I waiting for hours for something to happen, then tried another version of VS, ...

Best,
J.

@Algae said:

I changed it to a / delimiter and it did not notice any difference--still get the link error

This would not have done anything related to the linker error, just a comment.

The file I believe I'm linking to is named libtcl.dll.a

Then I suppose it should be tcl.dll. I should have paid more attention, since it says "file format not recognized" it does mean that it finds the file, thus your link command is correct.

Might it be that you are trying to compile with 32-bit compiler and link to 64-bit lib?
This is just a guess, I see you say you use cygwin 64, just check the architectures.

Apart from these comments I don't think I can help, sorry.

@David.G said:

I think what @JKSH is referring to is -opengl dynamic

That's right.

which is what I'm also using in my windows builds since it's pretty convenient.

The official builds of Qt 5.5 use it too. The OP doesn't need to create a custom build; just download and install.

You can read more on it here: http://doc.qt.io/qt-5/windows-requirements.html#dynamically-loading-graphics-drivers

Thanks for the link!

@jitu059_Lalat
Hi and welcome
I'm not aware of any Qt object that would allow you to do that.

you can have a look at
http://www.ftdichip.com/Support/Documents/AppNotes/AN_152_Detecting_USB_ Device_Insertion_and_Removal.pdf

for c sample of how to do it natively in windows.

@SGaist said:

Hi and welcome to devnet,

Do you have the idea of building a website using Qt ? Or do you want some backend code be run using Qt ?

as for web programming, QT is not the best bet, mate. It's a great tool for building cross-platform apps, like this. And it has a big potential on this for individual devs

I was thinking about an update to the dependencies from MinGW but indeed, it doesn't look like it happened.

@sassanh said in Maintenance Tool reports corrupted installation:

@Asperamanca
How did you edit MaintenanceTool.dat file? It's a binary file containing xml data and some binary characters between tags. When I remove a single character in it running MaintenanceTool shows errors like this:
Cannot seek to -15118 to read the operation data.

I don't remember exactly. I changed only XML parts, and it worked for me. But that was before the major update to the Maintenance tool that came recently. Maybe they added a CRC check on the file, or something like this.

@SGaist thanks , I have actually compiled without the script no errors thought while compiling, but I'm not sure if the errors will popup when i start using the build, but it would be really useful for future builds also I'm compiling OpenCV , so here is my installation paths :

DirectX SDK : C:\Program Files\Microsoft DirectX SDK (June 2010)
Microsoft SDK : C:\Program Files\Microsoft SDKs
MSVC : C:\Program Files\Microsoft Visual Studio 12.0
.NET : C:\Program Files\Microsoft.NET
OpenSSL : C:\OpenSSL-Win32
Qt source : C:\Qt\5.4.1

thanks again for your time

@swankster
Solution was, finding this gem https://github.com/kivy/kivy/wiki/Creating-a-64-bit-development-environment-with-MinGW-on-Windows then making a few modifications. Basically rebuilding MySQL Connector.C 6.1\lib\libmysql.dll with gendef.exe
will need to Install Ruby x64, I used (rubyinstaller-2.2.2-x64.exe)
set Ruby...\bin to System Variables.
copy C:\Program Files\MySQL\MySQL Connector.C 6.1 to C: and rename as \mysql-connector
open cmd window
C:\mysql-connector\lib
> gendef.exe libmysql.dll
> dlltool -v --dllname libmysql.dll --def libmysql.def --output-lib libmysql.lib
> gem install mysql2 --no-rdoc --no-ri -- '--with-mysql-lib="C:\mysql-connector\lib" --with-mysql-include="C:\mysql-connector\include"'

copy c:\mysql-connector\lib\libmysql.lib
to c:\Program Files\MySQL\MySQL Server 5.6\lib

copy c:\Ruby22-x64\lib\ruby\gems\2.2.0\gems\mysql2-0.3.18-x64-mingw32\vendor\libmysql.dll
to c:\Program Files\MySQL\MySQL Server 5.6\lib

Now build MySql Driver for QT. I used third party QT 64 from http://www.tver-soft.org/qt64
put in System Variables
C:\Qt\5.4.1-x64\mingw492r1-sjlj-rev1\qt-5.4.1-x64-mingw492r1-sjlj-rev1\bin;
C:\Qt\5.4.1-x64\mingw492r1-sjlj-rev1\mingw64\bin;
C:\Qt\5.4.1-x64\mingw492r1-sjlj-rev1\mingw64\lib
Create QT cmd window (needs custom qtenv.bat file, copied from other QT version and modified for x64)
from QT cmd x64

set mysql=C:\PROGRA~1\MySQL\MYSQLS~1.6 (must be short names)
cd c:\Qt\qt-5.4.1-src\qtbase\src\plugins\sqldrivers\mysql
qmake "INCLUDEPATH+=%mysql%\include" "LIBS+=%mysql%\lib\libmysql.lib" -o Makefile mysql.pro
mingw32-make

copy qsqlmysql.dll and qsqlmysqld.dll from C:\Qt\qt-5.4.1-src\qtbase\plugins\sqldrivers to c:\Qt\5.4.1-x64\mingw492r1-sjlj-rev1\qt-5.4.1-x64-mingw492r1-sjlj-rev1\plugins\sqldrivers

copy %mysql%\lib\libmysql.dll c:\windows

Hope this helps someone else save a few days worth of time and aggravation.