General and Desktop

• 

  How to create the plugin of MYSQL for Qt
  • BlackStar  

  34
  3
  Votes
  34
  Posts
  24789
  Views

  

  @flydragon Do not duplicate posting because you do not get an answer immendiately. [edit:koahnig see https://forum.qt.io/topic/82629/why-qsqlquery-exec-exit-failed ]
• 

  Reporting inappropriate content on the forums
  spam • • Eddy  

  26
  2
  Votes
  26
  Posts
  12789
  Views

  

  Thank you for the report. I have banned the user, which got rid of the spam posting. Not a loss, as this user did not post any other content on the site. Just deleting this one posting was not possible. Thanks for reporting this.
• 

  UNSOLVED QTextToSpeech ...... say()
  • Ucn_  

  4
  0
  Votes
  4
  Posts
  25
  Views

  

  @Ucn_ Hi I dont know the module well enough to say for sure but looking over the backend code it seems not much information besides playing state that is sent back to the Qt plugins. So i would guess on No. However, you could ask on the dev mailing list where the Qt devs hang out and see if they know a way. (maybe via the backend directly ) https://lists.qt-project.org/
• 

  This topic is deleted!
  • accjjames33  

  1
  0
  Votes
  1
  Posts
  3
  Views

  No one has replied

• 

  UNSOLVED Buildung a special windows bar
  • ppp1  

  4
  0
  Votes
  4
  Posts
  21
  Views

  

  Hi and welcome to devnet, The window decoration is not handled at all by Qt. It's the window manager of your OS that manages them.
• 

  UNSOLVED How to generate the barcode 128 in Qpixmap ?
  • Mihaill  

  7
  0
  Votes
  7
  Posts
  31
  Views

  

  Clearly. But maybe you know how to encode using a font?
• 

  UNSOLVED ui->graphicsView Error: "Internal data stream error."
  • hndery  

  2
  0
  Votes
  2
  Posts
  5
  Views

  

  Hi and welcome to devnet, What version of Qt are you using ? On what platform ?
• 

  UNSOLVED How to use SQLite's PRAGMA application_id
  • l3u_  

  12
  0
  Votes
  12
  Posts
  35
  Views

  

  @l3u_ said in How to use SQLite's PRAGMA application_id: and without any hint in the documentation See https://www.sqlite.org/pragma.html Some pragmas take effect during the SQL compilation stage, not the execution stage. This means if using the C-language sqlite3_prepare(), sqlite3_step(), sqlite3_finalize() API (or similar in a wrapper interface), the pragma may run during the sqlite3_prepare() call, not during the sqlite3_step() call as normal SQL statements do. Or the pragma might run during sqlite3_step() just like normal SQL statements. Whether or not the pragma runs during sqlite3_prepare() or sqlite3_step() depends on the pragma and on the specific release of SQLite.
• 

  UNSOLVED Error "no matching member function for call to bindValue"
  • davidino  

  2
  0
  Votes
  2
  Posts
  9
  Views

  

  Hi @davidino, query.bindValue(":name", album.name()); You mean here? So please provide the function signature of Album::name(). Btw.: Why are you using Qt 5.14? It is not released yet. Have you tried 5.12.x or 5.13.x? Regards
• 

  UNSOLVED How to show GeneratedFiles in VS's resolution explorer?
  • Rook1e  

  2
  0
  Votes
  2
  Posts
  19
  Views

  

  Hi, welcome to the forum. I think you mean "solution explorer". Those files are build artifacts. They are not part of the solution so they don't show up in the solution view. If you really need to see them in VS you can hit the little "Switch Views" icon on the solution explorer's toolbar. This will switch the view to show you the filesystem hierarchy. Why do you need that anyway? You're not suppose to edit those files.
• 

  SOLVED Can't write to Resource INI file
  • MasterBlade  

  3
  0
  Votes
  3
  Posts
  15
  Views

  

  Hi, The Qt resources have never been writable. They are compiled and built in your application executable/library/as external file.
• 

  SOLVED How to print text with the right font
  • Mihaill  

  2
  0
  Votes
  2
  Posts
  9
  Views

  

  it is work painter.setFont(font); painter.drawText(0, 0, 200, 30, Qt::AlignLeft|Qt::AlignTop, testText); //int x, int y, int width, int height,
• 

  UNSOLVED PySide2 QTablewidget expected behavior?
  • Stephen Hall  

  3
  0
  Votes
  3
  Posts
  17
  Views

  

  Thanks, I will have a look at custom models, I am pretty new to QT5 and making it up as I go along with Google's assistance.
• 

  UNSOLVED QGraphicsView scale Scene to only visible elements
  • sandro4912  

  2
  0
  Votes
  2
  Posts
  9
  Views

  

  @sandro4912 I know nothing about this(!) But you pass mGraphicsView->scene()->sceneRect() as the rectangle for fitInView(), if you want to exclude non-visible objects can't you calculate the necessary rectangle accordingly and pass that instead?
• 

  UNSOLVED windows app for simle API get : TLS initialization failed
  • louis cordhomme  

  16
  0
  Votes
  16
  Posts
  60
  Views

  

  Is there a set of steps to follow one after the other ? If so, you may want to consider using a state machine to model that.
• 

  UNSOLVED QFileSystemModel::rowCount return 0
  • jronald  

  7
  0
  Votes
  7
  Posts
  37
  Views

  

  Documentation update is in progress.
• 

  UNSOLVED How to create weighted graph in graphicsview
  • Kalidian  

  5
  0
  Votes
  5
  Posts
  32
  Views

  

  @Kalidian Hi Np, and do please also consider @Pablo-J-Rogina very valid point that such algorithms can be had via a library so writing one yourself might not be the best way unless its only kruskal's you are after and the app will never need to use other algorithms. Or its simply for learning.
• 

  UNSOLVED Function intellisense tooltip position
  • jronald  

  2
  0
  Votes
  2
  Posts
  14
  Views

  

  Hi @jronald, AFAIK, that's not possible at the moment. Regards
• 

  UNSOLVED QGroupBox discrepancies between Linux and Win
  • willemf  

  10
  0
  Votes
  10
  Posts
  55
  Views

  

  @JonB Yes, the alignment of the groupbox label is defined by the style.
• 

  SOLVED How to use "try destroy window" event?
  • AndrzejB  

  8
  0
  Votes
  8
  Posts
  17
  Views

  

  @AndrzejB Ah super. :) Don't forget to mark as solved if you are satisfied.
• 

  SOLVED 3 widgets in only one central widget
  • VenAle17  

  14
  0
  Votes
  14
  Posts
  98
  Views

  

  @alex17 hi remove the line mainlayout->addStretch(); and see. in fast test with your code (using buttons ) (without that line.) else it looks like ((with that line.)) as you insert the stretch after the other widgets.
• 

  UNSOLVED QLabel and Background Transparency
  • webzoid  

  3
  0
  Votes
  3
  Posts
  597
  Views

  

  @webzoid You can use setvisible (true) And (False) and make a transparent even when the text has changed
• 

  UNSOLVED How convert .ui to .d (Dlang)?
  • thegrapevine  

  2
  0
  Votes
  2
  Posts
  17
  Views

  

  Hi That tool is 10 years old and seems to be made for Qt4 and will require (many) changes to the files to compile in Qt5. Also it might generate code that do not work with Dlang in QtE5 version since its so old. I did try to open project and press compile but it exploded in errors. sorry.
• 

  UNSOLVED Issue While deleting a Movie after the Given time
  • sankarapandiyan  

  7
  0
  Votes
  7
  Posts
  29
  Views

  

  @sankarapandiyan Please don't delete your posts after you have received your answer. leave your posts online so that other people can understand the thread.
• 

  SOLVED Problems launching a QProgressDialog after main window is made visible
  • JCBaraza  

  8
  0
  Votes
  8
  Posts
  67
  Views

  

  @Pl45m4 said in Problems launching a QProgressDialog after main window is made visible: Did you wrote something about the busy indicator? I must have missed it Well, actually it was in the comments in the code, not in the post itself. Probably I cut it to reduce the size of the post. Sorry! Now it makes sense ;-) But I've never heard about using the progressBar as busy indicator. How did the person from the other forum this "trick"? Yes I know that the window_loaded signal was made by you, but it should work even without the MainWindow::. About this, I've moved the signal & connect to Qt5 format, and now it works ok (but I still must move the qApp->processEvents(); to SearchFiles function). Ah! The compiler forces me to write the two MainWindow:: connect(this, &MainWindow::window_loaded, this, &MainWindow::on_actionInitializeTestInit, Qt::ConnectionType(Qt::QueuedConnection | Qt::UniqueConnection)); If I remove them, I get syntax errors. @JCBaraza said in Problems launching a QProgressDialog after main window is made visible: Note that if you edit a QProgressBar in the Qt Design editor, you do have a property called "textVisible" that you can check or leave unchecked This is exactly what the line does ;) Or should do... Haven't tested it. Dunno if it shows the percentage value or just hides the text, but setting the text visibility to true or false is pretty much the same as (un-)checking the property in Qt Designer. (Everything that can be done with Designer, can be done with code only, but code is even more powerful) I'm affraid not in this case: there exist no member in QProgressDialog called setTextVisible (nor textVisible or similar); it only exists setVisible, which affects all the dialog... I suppose it's because the setTextVisible is a member of QProgressBar. That's why I guess that the only way to get it in my QProgressDialog will be by customizing a QProgressBar and then replacing the bar in my QProgresDialog: QProgressDialog progress(this); QProgressBar mybar; mybar.setTextVisible(false); progress.setBar(&mybar); I've used this, and it works as I expected. And what's more. If you may need to change the progress display to progress mode instead of busy indicator, you only have to do is to change the text visibility of the progress bar and the progress dialog Range (and Value): mybar.setTextVisible(true); progress.setRange(0, n); progress.setValue(i); // "i" means any value representing the percentage of the task performed // Continue operations varying Value as usual ... progress.setValue(n); I hope this can be useful for someone. EDIT: Just found an article and several posts on StackOverflow about this trick. The blog post said that all three properties need to have a value of zero (min, max and value, which is 1 or 5 in your case). Have you tried it without setting any (progress) value? Actually I've tried setting Value to 0, 1 and not setting any value, and it works exactly the same in all cases, both when it worked and when it didn't. In fact, I've left in my example with Value unset, and it's working. Thanks again for your interest. Regards,
• 

  UNSOLVED QtDBus slot not working with expected prototype
  qvariant dbus qtdbus bluez interfacesadded • • rsjudka  

  4
  0
  Votes
  4
  Posts
  22
  Views

  

  Do you know what data you should be receiving ?
• 

  UNSOLVED Problems with -avx when configuring qt source code.
  • smallcsduck  

  9
  0
  Votes
  9
  Posts
  39
  Views

  

  @Christian-Ehrlicher I can pass the configuration test.
• 

  UNSOLVED QMediaPlayer stream data from a self signed https server
  qmediaplayer streaming https • • Vagabond  

  10
  0
  Votes
  10
  Posts
  49
  Views

  

  @Pablo-J-Rogina thanks. Just looked into it. As the docs for QNetworkConfiguration state: QNetworkConfiguration encapsulates a single access point or service network. In most cases a single access point configuration can be mapped to one network interface. I deduce from that, that any call to QMediaPlayer::setNetworkConfigurations(QList<QNetworkConfiguration>) will not fix my problem. In fact, I gather from the information, that QNetworkConfiguration deals more with hardware-side networking & routing configurations than it does with specifics for transmission protocols. This notion is strengthened by the fact, that there is no accessible public members for QNetworkConfiguration and the only available constructors are copy and default. Therefore, the only way accessible way to provide valid values to setNetworkConfigurations is by filtering QNetworkConfigurationManager::allConfigurations()). Then again, this method produces a list dependent on the host system, which indicates hardware specific settings. Still, I got curious while reading the desciption for QNetworkConfiguration::ServiceSpecificPurpose, which states: The configuration can be used for operator specific services (e.g. receiving MMS messages or content **streaming**). For experimental purposes I filtered all available configurations of that type, which again didn't change anything for me. (Also, be sure to check out my latest edit up top, if you care for more info)
• 

  UNSOLVED QObject::connect: Cannot queue arguments of type 'QMap<QString,int>
  • RahibeMeryem  

  3
  0
  Votes
  3
  Posts
  8
  Views

  

  Hi Can you show the full code ? If i do class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(QWidget *parent = nullptr); ~MainWindow(); QMap<QString, int> data; // the actual list private slots: void myslot( QMap<QString, int> &p) // slot { p["test"] = 10; } signals: void mysignal( QMap<QString, int> &p); // signal private: Ui::MainWindow *ui; }; and then in ctor connect(this, &MainWindow::mysignal, this, &MainWindow::myslot); emit mysignal(data); it works as expected and i dont get the "Cannot queue arguments" So are you trying to send signal to/from a other thread `? or in which way does your code differ ?
• 

  UNSOLVED Filter a column with QSortFilterProxyModel
  • JBosco  

  6
  0
  Votes
  6
  Posts
  17
  Views

  

  @SGaist That was not what I meant. I was thinking of somewhere, maybe widget validators, where it was not clear to me whether the pattern you were giving was treated as if it had to match the whole input, i.e. as though it were enclosed in ^$. And in that case specifying ^$ would be two literal characters, and not match empty. EDIT Ah, https://doc.qt.io/qt-5/qregexpvalidator.html#details When QRegExpValidator determines whether a string is Acceptable or not, the regexp is treated as if it begins with the start of string assertion (^) and ends with the end of string assertion ($); the match is against the entire input string, or from the given position if a start position greater than zero is given.
• 

  UNSOLVED I have the same problem, do we now have any solution
  • yao_njjjjjj  

  4
  0
  Votes
  4
  Posts
  47
  Views

  

  Did you try the solution suggested in the report ?
• 

  UNSOLVED my app blinking on ubuntu
  • mmjvox  

  14
  0
  Votes
  14
  Posts
  126
  Views

  

  finaly I found out that the problem was with Intel drivers and update the kernel solved the problem.
• 

  SOLVED Nested QVector problem
  qvector nest • • pauledd  

  9
  0
  Votes
  9
  Posts
  29
  Views

  

  @mrjj good catch ^^
• 

  UNSOLVED Vista style is not loaded
  • mcmigliore  

  6
  0
  Votes
  6
  Posts
  48
  Views

  

  Then you should try to use windeployqt and check its output with regard to the package you get.
• 

  UNSOLVED QNetworkReply not deleting
  • Ivan Megazoo  

  5
  0
  Votes
  5
  Posts
  24
  Views

  

  @JonB no Qt does not forbid you to do that. @Ivan-Megazoo do that connection in your constructor and only there. Beside that, you are already deleting the reply in the slot so why are you trying to delete it even more ? On a side note, why are you subclassing QNetworkAccessManager ? Your T_Manager class should rather be in the "has a" rather than "is a".
• 

  UNSOLVED How to Make Accelerator with & Sign to Work on Mac?
  mac shortcut • • ChiK  

  4
  0
  Votes
  4
  Posts
  21
  Views

  

  Right, I forgot that part. The "workaround" is explained in the QKeySequence documentation linked from the QShortcut one.
• 

  UNSOLVED Qt equivalent to Win32 BeginPath/EndPath/FlattenPath?
  • Sprezzatura  

  1
  0
  Votes
  1
  Posts
  13
  Views

  No one has replied

• 

  UNSOLVED Qt virtualKeyboard versioning question
  • Circuits  

  1
  0
  Votes
  1
  Posts
  11
  Views

  No one has replied

• 

  UNSOLVED Can I control the function keys of key through qt Application?
  • Mijaz  

  3
  0
  Votes
  3
  Posts
  23
  Views

  

  @Mijaz said in Can I control the funtion keys of key through qt Application?: Ctrl+Alt+F7 In linux that will/might switch the active console. What does it mean on your system / context ?
• 

  UNSOLVED Close / Stop MDIChild in its constructor
  • pixbyte  

  4
  0
  Votes
  4
  Posts
  20
  Views

  

  @pixbyte said in Close / Stop MDIChild in its constructor: Dialog or widgets...I think everyone knows what I mean. Yep, but for dialogs, there are Accept and Reject etc so in some use cases its really not the same :) Anyway if whole application closes, please try setting setQuitOnLastWindowClosed(false); on the application. https://doc.qt.io/qt-5/qguiapplication.html#quitOnLastWindowClosed-prop and see if that is what you are experiencing. That said, its really not super to try to cancel construction from within the ctor. However, it should work. ( i think) Is there a reason you cant just do bool MdiChildDiskInfo::readDiskInfo() .. <<< let it return a status if empty or not MdiChildDiskInfo * di = new MdiChildDiskInfo(..) if (! di->readDiskInfo() ) di->DeleteLater(); // nothing to show get rid of it else di->show(); (psudo code)