General and Desktop

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  Unsolved how to provide custome signal in CustomWidget plugin?
  • opengpu

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  Provide signals in your implementation object as usual. connect with QObject* not with interface.

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  Solved How can I add Symbolic Link (/Application) and background image in .dmg package?
  macdeployqt qt 5.11 bash mac-os qtcreator • • Yash001

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  Another way is to create .dmg file by hdiutil create instead of macdeployqt -dmg .

  mkdir ui-release cd ui-release ln -s /Applications cd .. mv $appfolder ui-release/ hdiutil create -volname $volname -srcfolder ui-release/ -ov -format UDZO $dmgfilename
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  Unsolved does parentClass's Q_OBJECT work for nestedClass?
  • opengpu

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  @opengpu said in does parentClass's Q_OBJECT work for nestedClass?:

  so can i write like this?

  Yes (as long as you don't declare signal/slots/properties/invokables in the inner class). Whether you should is another topic.

  i found this is illegal:

  It's not illegal per-se it's just that moc is not smart enough to handle it. It is valid if you skip moc using, for example, Verdigris

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  Unsolved Cross-target GDB on Windows host with Python support for Linux-x86_64 target
  • WebLine89

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  Unsolved Pyqt5 vertical scrollbar
  • Clemo

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  @Clemo You can take a look at this example app: http://doc.qt.io/qt-5/qtwidgets-widgets-sliders-example.html
  Can you use QScrollArea instead?

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  Unsolved how to speed up when I need to draw huge number of objects in a view?
  • vigi

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  @vigi Look at the 40000 chips example. It basically does what you want. But I have serious doubts that you can make it work efficiently with 50 million objects.
  What is your actual use case?

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  Unsolved when should Generating "moc" files in qt project,and what is the "moc" files's function？
  • Princein

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  @sierdzio said in when should Generating "moc" files in qt project,and what is the "moc" files's function？:

  moc files are generated by moc tool (Meta Object Compiler) - they are always generated for all QObject classes. They are absolutely required for meta stuff to work, so things like:

  signals
  slots
  Q_INVOKABLE
  QMeta* classes

  However, these files are generated at build time. You don't need to keep them in your project, same as you don't need to store Makefiles, object files etc.
  Actually, I strongly recommend building your code outside of your source code directory. Qt Creator does this automatically (it's called a "shadow build").
  Other code generators in Qt include:

  uic (generates UI headers from .ui files)
  rcc (generates cpp resource files from .qrc files)
  lupdate/lrelease (for translations)

  thank you very much!

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  Unsolved Missing icons on "ssh -X" execution (fallback theme issue)
  • toralf

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  Solved How to use REPC ?
  • wink

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  Hi again,
  Just a short statement to tell you that all works correctly now.
  Must have been a problem with paths of different qt installations...

  Thanks for your help!

  best regards
  Winkl

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  Unsolved How to change the mouse cursor color in Qt Creator?
  • ajee

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  @Ratzz text editor is Monaco (misspelled as Monaro in first post)

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  Solved [SOLVED]how to check if QMouseEvent::pos inside a QWidget?
  • opengpu

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  Then please mark the topic as solved, thx

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  Unsolved classes with QtimerEvent
  • qt_ankit_developer

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  @qt_ankit_developer It's not about QMainWindow or QObject (QMainWindow is a QObject by the way).
  You should read about scopes in C++, else you will do the same mistake again and again...

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  Solved Syntax Errors When Including Header (QChart Headers)
  • R_Irudezu

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  Yes that's the page I linked earlier.

  Yes, I'm aware of that, that's how I normally use reference material. It's very nice to have. Reading this page when I started out seemed to indicate to me that I also needed to do this, which I do not.

  It's ok, I've said my piece. I've learned, I was just trying to assist. I'm happy to leave it here.

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  Unsolved why I need add the same .a and .dylib file to my Mac qt project
  • Princein

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  @Princein said in why I need add the same .a and .dylib file to my Mac qt project:

  macx: LIBS += -L$$PWD/../../../../../../usr/local/Cellar/boost/1.67.0_1/lib/libboost_system.a

  I don't know why both were added, but this line is wrong. If you add libs using -l you have to remove "lib" prefix. Another thing wrong with this line: -L specifies a directory where libs can be found not a specific lib.

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  Unsolved EVDEV calibration
  • FVKamlesh

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  This topic is deleted!
  • FVKamlesh

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  Unsolved Item Select initialization problem in QGraphicsScene
  • Pada_

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  Unsolved how to design the form . Need valuable inputs
  • Qt Enthusiast

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  @Qt-Enthusiast said in how to design the form . Need valuable inputs:

  ost left cell show be one

  ui->tableWidget->item(0,0)->text();
• 

  Unsolved QGraphicsDropShadowEffect cut off by margin
  • reonZ

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  Solved how to programmatically break into debugger?
  • davecotter

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  __asm__("int $3\n" : : );

  that did it!

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  Unsolved Qt Equivalent of X11 ConnectionNumber?
  event loop linux • • Jeeves

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  Hi,

  Maybe QAbstractEventDispatcher could be a starting point.

• 

  Unsolved QGuiApplication::screenAdded signal never emitted
  • graniteDev

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  Hi,

  What OS are you working on ?
  What version of Qt is it ?

• 

  Unsolved create listView with certain items from array
  array listview modeldata model • • Ldweller

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  Unsolved extract substring from qstring
  • s002wjh

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  @s002wjh QString::split() comes to mind...

  afterwards iterate over the QStringList and use QString::toInt().

  HTH

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  Unsolved Recreating the Slack.App channel selector with Qt
  • Wolosocu

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  @Wolosocu
  Hi
  Good work. it looks nice.
  Unless you use QStyle paint functions, any stylesheet have no effect.
  QPainter have no idea about it.

  Im not sure how
  QStyle::State_Selected and QStyle::State_MouseOver
  is not working./ be different.

• 

  Unsolved how to draw a custom slider which can be moved by mouse as the Qt intrinsic slider?
  • opengpu

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  Hi
  Just as a note.
  QtCreator comes with something like the gradient thing.
  
  You could look around its code to see how its done.

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  Solved Refreshing a QGridLayout
  • John Green

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  Hi
  Very fast sample

  https://www.dropbox.com/s/w9ogmct57rxsz8o/DynamicWidget.zip?dl=0

  as you can see, i just do

  void MainWindow::on_pushButton_released() { ui->left->addWidget( new QLineEdit ); ui->right->addWidget( new QLineEdit ); }

  and the layouts just adjust, with no need for any type of refresh.

  So if the new ones dont show up, its something else then the need for refresh the layout as such-
  but i cant guess from the code fragments :)

• 

  Solved how to get the real size of the widget? the result return by the size() & geometry() is not the real size when app runs
  • opengpu

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  @mpergand
  Your suggestion is interesting. However, if the OP wants to go down this route I think he should look carefully at the comments in response to the "accepted solution" at https://stackoverflow.com/a/3996525/489865 (which is where I presume you got it from). They may also explain why you are seeing "odd behaviour" as per your "The issue is if then after you turn off this attribute, the show() method does nothing.". In the same thread https://stackoverflow.com/a/19235153/489865 appears to offer a more complex but "safer" mechanism for determining the size, I believe.

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  Solved Drag and Drop Text between tableview
  • TheCipo76

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  @VRonin You're right!
  i've put your code in new project's main.cpp and works

  however i 've wrote that i'm not able to use it..
  not that your code don't work.

  Now i will retry to use it in my project.

  Thank you and thanks to all others who help me every time.

• 

  [Solved] QGraphicsItem::boundingRect() and children
  qgraphicsitem boundingrect • • Joel Bodenmann

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  @Joel-Bodenmann
  To elaborate on your answer: The boundingRect() must include every pixel that you intend to paint to in your own item's paint method. That includes e.g. pixels that are outside your item proper, but painted to due to a wide pen.
  (Calculating the correct boundingRect for items with wide cosmetic pens can be a real pain.)

• 

  Unsolved Implementing SVG Editor with Qt > 5.x
  • xtingray

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  @xtingray said in Implementing SVG Editor with Qt > 5.x:

  I'm just researching what is the state of the art related to SVG edition from Qt.

  simple: there is none :)
  Qt's SVG capabilities are just in displaying them.

  The rest can be achieved by parsing the XML source of the SVG.

  So my advice to start with:

  learn the SVG specification (as much as you can) learn Qt's XML classes then think about creating an appropriate structure to read the SVG data into use this structure for manipulating via UI elements (QtWidgets, QML) save the structure back to valid SVG
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  Solved Qt something is printing new line to console very second
  • framet

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  Hi,

  Do you also have that with a default application ?

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  Unsolved HTML tables cut in half on print to pdf
  • nwoki

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  Hi, sorry for the late response. Had a lot on my plate lately. For now, the tables are still truncated but modifying the html, i've made it so that the new pages (where the tables get truncated) show the table headers using the css suggested by @CKurdu .

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  Solved Trying to understand semaphore
  • ManiRon

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  Now issue is resolved, you can move the issue to SOLVED state. Enjoy Qt Programming.

• 

  This topic is deleted!
  • Jeeves

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  Solved Problem with network SSL
  • leuat

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  Thank you so much! Overwriting the dll's fixed the problem...

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  Unsolved what is 'TestBed' directory in qt
  • Princein

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  Hi,

  That's nothing Qt, you should check your project for something related to that folder.

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  Unsolved Send event to a QWidget
  • Robinsondesbois

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  @Robinsondesbois can you share your result? thanks

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  Solved loop for not waiting the end of process
  • filipdns

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  @filipdns I don't see you adopting it in your last code snippet...

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  Solved How to set current widget from QWidget class
  • AaronKelsey

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  @AaronKelsey said in How to set current widget from QWidget class:

  Unfortunately I have little experience with signals and slots

  I suggest to learn this core concept of Qt, see: http://doc.qt.io/qt-5/signalsandslots.html