https://supportnumbers.net/blog/hp-printer-assistant-not-opening/

@mrjj . the program crashes when run from Qt Creator. Yes, I am using MSVC compiler 2017x64

That did it. I deleted the build folder, did a clean and now things are working again. Thanks for pointing me in the right direction, @SGaist !

@elfring openComPort() is called from a slot that's responding to a change in a selection from a QComboBox. This is just a mild safeguard against something going wrong in the selection. If anything, I probably should check that it resolves to a valid port name.

Hi,

Just as usual, create a scene and set it on your ui->graphviewname.

Sorry I can' t follow you:

if I set context menu policy in this widget, it doesn't open context menu anyway.
I did it in QTreeWidget in the same application and it worked. Not here...

I subclassed a QMdiSubWindow.
In this window there are some boxes containing other widgets and finally in one of them there's a qcustomplot which occupies 80% of the whole subwiindow area.

I 've overriden the subwindow ::mousePressEvent(QMouseEvent *event) and here i check if right button is pressed: if so it opens that menu.

when user presses mouse button over a qcustomplot it triggers mousePressEvent(QMouseEvent *event) which reemits mouse press event and that's grabbed by my slot. when user presses mouse button over a different part of subwindow it triggers directly my slot .

when I have my context menu over qcustomplot if I click on a menu entry it correctly fires its lambda but it fires qcustomplot mousePressEvent(QMouseEvent *event) too.

@LScott
As a workaround, does the (GDB) condition accept a function call, say, strcmp() or similar, or a cast, you could put up with? I'm not sure Qt Creator debugger is claiming to offer much over whatever GDB will accept?

@WernerT.A. said in VNC not working on any browser:

connect to the vnc using [pigshell's vnc link](I it is think the original repo where this features was implemented): pigshell.github.io/noVNC/qtvnc.html#host=192.168.56.1014&port=5900 using firefox, edge and chrome from windows host.

This is not going to work... you're trying for the remote server (Github) to reach your Qt app in your internal LAN (host=192.168.56.1014) even the IP in that URL is not valid.
For this service to work, you need to forward the port (5900) of your machine running the Qt app to the external IP in your environment, and then point the service to such external IP + port

Hi,

I don’t see anything here justifying the change of project type. Are you sure there’s nothing else included ?

What happens if you maximize the window after the keyboard is shown ?

Do you require such an old version ? Current LTS is 5.9

@popov895

Or maybe there is some way to get the error status code when QWebEnginePage emits loadFinished(false)?

Good question! Does https://stackoverflow.com/questions/40309105/capture-server-response-with-qwebengineview give you any help/leads for getting at the status code? It's useful reading anyway.

EDIT Hmm, https://stackoverflow.com/questions/51656117/how-to-get-http-status-codes-from-qt-qwebengineview talks about trying QWebEngineUrlRequestInterceptor but I think no luck. Again you should read because it looks like others are having same problem as you getting at the HTTP code. And http://code.qt.io/cgit/qt/qtwebengine.git/tree/src/webenginewidgets/api/qwebenginepage.cpp#n367 might be useful.

I am supposed to return a Qt::CheckState elem from enum which is int.

Yes the compiler constructs a QVariant from the int value.

So, any idea about what's going wrong here ?

Apparently nobody is interested in the book. Thanks for your comments.

Hi
well qtoolbar shows maker and can expand the toolbar.

It will not make a menu out of it. That is something you have to implement yourself. :)
And a layout will not by any means do such thing.

@TobbY said in QTreeWidget Signal and slot:

#include <QTreeWidgetItem>

already included

EDIT:
but not in mainwindow.h....
thank you... now works

@mintykat
Any progress ? Or what is the error now?

@Mohammad-Kanan I'm using the 4.7.1 for the moment, only problem is have to manually add the Qt version and manage manually the kit but it's working.

I mark this topic as solved but it's not really the case because maintenance tools is not usable any not in this configuration.

@SGaist my project read / write some data in SQLite database to say it simple.

here small part of my .js, all the rest is different data and table but same structure

function dbGetHandle() { try { var db = LocalStorage.openDatabaseSync("Kardex", "1.0", "Kardex", 1000000) } catch (err) { console.log("Error opening database: " + err) } return db } function dbInitflightlog() { var db = LocalStorage.openDatabaseSync("Kardex", "1.0", "Kardex", 1000000) try { db.transaction(function (tx) { tx.executeSql('CREATE TABLE IF NOT EXISTS flight_log (immatriculation TEXT, date_etape TEXT, pilot1 TEXT, pilot2 TEXT, pilot3 TEXT, photo1 TEXT, photo2 TEXT, photo3 TEXT, aeroport_depart TEXT, aeroport_arrivee TEXT, heure_depart TEXT,heure_arrivee TEXT, sunrise TEXT, sunset TEXT, temps_bloc_jour TEXT, temps_bloc_nuit TEXT, temps_bloc_etape TEXT, cycle_etape TEXT, aircrafttype TEXT, numerodeserie TEXT, dateconstruction TEXT, numerocertificatimmat TEXT, numerocertificatLSA TEXT, dateLSA TEXT, numeroCDN TEXT, dateCDN TEXT, datecertificatassurance TEXT, datepesee TEXT, marquemoteur TEXT, marquehelice TEXT, fwdtrappe TEXT, bwdtrappe TEXT, heurecellule TEXT, cyclecellule TEXT, heure_SN_moteur_1 TEXT, cycle_SN_moteur_1 TEXT, heure_SN_moteur_2 TEXT, cycle_SN_moteur_2 TEXT, flightmanual_date TEXT, flightmanual_rev TEXT, flightmanualapprob_date TEXT, emptyweight TEXT,entretien_hors_cadre_approb TEXT, edprent TEXT, amdtprent TEXT, pedateed TEXT, peapprobdate TEXT, periodcheck1 TEXT, periodcheck2 TEXT, periodcheck3 TEXT, periodcheck4 TEXT, periodcheck5 TEXT, periodcheck6 TEXT)') }) } catch (err) { console.log("Error creating table in database: " + err) }; } function dbInsertflightlog(Pimmatriculation, Pdate_etape, Ppilot1, Ppilot2, Ppilot3, Pphoto1, Pphoto2, Pphoto3, Paeroport_depart, Paeroport_arrivee, Pheure_depart, Pheure_arrivee, Psunrise , Psunset, Ptemps_bloc_jour, Ptemps_bloc_nuit, Ptemps_bloc_etape, Pcycle_etape, Paircrafttype, Pnumerodeserie, Pdateconstruction, Pnumerocertificatimmat, PnumerocertificatLSA, PdateLSA, PnumeroCDN, PdateCDN, Pdatecertificatassurance, Pdatepesee, Pmarquemoteur, Pmarquehelice, Pfwdtrappe, Pbwdtrappe, Pheurecellule, Pcyclecellule, Pheure_SN_moteur_1, Pcycle_SN_moteur_1, Pheure_SN_moteur_2, Pcycle_SN_moteur_2, Pflightmanual_date, Pflightmanual_rev, Pflightmanualapprob_date, Pemptyweight, Pentretien_hors_cadre_approb, Pedprent, Pamdtprent, Ppedateed, Ppeapprobdate, Pperiodcheck1, Pperiodcheck2, Pperiodcheck3, Pperiodcheck4, Pperiodcheck5, Pperiodcheck6) { var db = dbGetHandle() var rowid = 0; db.transaction(function (tx) { tx.executeSql('INSERT INTO flight_log VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)', [Pimmatriculation, Pdate_etape, Ppilot1, Ppilot2, Ppilot3, Pphoto1, Pphoto2, Pphoto3, Paeroport_depart, Paeroport_arrivee, Pheure_depart, Pheure_arrivee, Psunrise, Psunset, Ptemps_bloc_jour, Ptemps_bloc_nuit, Ptemps_bloc_etape, Pcycle_etape, Paircrafttype, Pnumerodeserie, Pdateconstruction, Pnumerocertificatimmat, PnumerocertificatLSA, PdateLSA, PnumeroCDN, PdateCDN, Pdatecertificatassurance, Pdatepesee, Pmarquemoteur, Pmarquehelice, Pfwdtrappe, Pbwdtrappe, Pheurecellule, Pcyclecellule, Pheure_SN_moteur_1, Pcycle_SN_moteur_1, Pheure_SN_moteur_2, Pcycle_SN_moteur_2, Pflightmanual_date, Pflightmanual_rev, Pflightmanualapprob_date, Pemptyweight, Pentretien_hors_cadre_approb, Pedprent, Pamdtprent, Ppedateed, Ppeapprobdate, Pperiodcheck1, Pperiodcheck2, Pperiodcheck3, Pperiodcheck4, Pperiodcheck5, Pperiodcheck6]) var result = tx.executeSql('SELECT last_insert_rowid()') rowid = result.insertId }) return rowid; } function dbUpdateflightlog(Pimmatriculation, Pdate_etape, Ppilot1, Ppilot2, Ppilot3, Pphoto1, Pphoto2, Pphoto3, Paeroport_depart, Paeroport_arrivee, Pheure_depart, Pheure_arrivee, Psunrise , Psunset, Ptemps_bloc_jour, Ptemps_bloc_nuit, Ptemps_bloc_etape, Pcycle_etape, Paircrafttype, Pnumerodeserie, Pdateconstruction, Pnumerocertificatimmat, PnumerocertificatLSA, PdateLSA, PnumeroCDN, PdateCDN, Pdatecertificatassurance, Pdatepesee, Pmarquemoteur, Pmarquehelice, Pfwdtrappe, Pbwdtrappe, Pheurecellule, Pcyclecellule, Pheure_SN_moteur_1, Pcycle_SN_moteur_1, Pheure_SN_moteur_2, Pcycle_SN_moteur_2, Pflightmanual_date, Pflightmanual_rev, Pflightmanualapprob_date, Pemptyweight, Pentretien_hors_cadre_approb, Pedprent, Pamdtprent, Ppedateed, Ppeapprobdate, Pperiodcheck1, Pperiodcheck2, Pperiodcheck3, Pperiodcheck4, Pperiodcheck5, Pperiodcheck6, Prowid) { var db = dbGetHandle() db.transaction(function (tx) { tx.executeSql( 'update flight_log set immatriculation=?, date_etape=?, pilot1=?, pilot2=?, pilot3=?, photo1=?, photo2=?, photo3=?, aeroport_depart=?, aeroport_arrivee=?, heure_depart=?, heure_arrivee=?, sunrise=?, sunset=?, temps_bloc_jour=?, temps_bloc_nuit=?, temps_bloc_etape=?, cycle_etape=?, aircrafttype=? ,numerodeserie=? ,dateconstruction=? ,numerocertificatimmat=? ,numerocertificatLSA=? ,dateLSA=? ,numeroCDN=? ,dateCDN=? ,datecertificatassurance=? ,datepesee=? ,marquemoteur=?, marquehelice=?, fwdtrappe=?, bwdtrappe=?, heurecellule=? ,cyclecellule=? ,heure_SN_moteur_1=?, cycle_SN_moteur_1=?, heure_SN_moteur_2=? , cycle_SN_moteur_2=?, flightmanual_date=?, flightmanual_rev=?, flightmanualapprob_date=?, emptyweight=?, entretien_hors_cadre_approb=?, edprent=?, amdtprent=?, pedateed=?, peapprobdate=?, periodcheck1=?, periodcheck2=?, periodcheck3=?, periodcheck4=?, periodcheck5=?, periodcheck6=? where rowid = ? ', [Pimmatriculation, Pdate_etape, Ppilot1, Ppilot2, Ppilot3, Pphoto1, Pphoto2, Pphoto3, Paeroport_depart, Paeroport_arrivee, Pheure_depart, Pheure_arrivee, Psunrise, Psunset, Ptemps_bloc_jour, Ptemps_bloc_nuit, Ptemps_bloc_etape, Pcycle_etape,Paircrafttype, Pnumerodeserie, Pdateconstruction, Pnumerocertificatimmat, PnumerocertificatLSA, PdateLSA, PnumeroCDN, PdateCDN, Pdatecertificatassurance, Pdatepesee, Pmarquemoteur, Pmarquehelice, Pfwdtrappe, Pbwdtrappe, Pheurecellule, Pcyclecellule, Pheure_SN_moteur_1, Pcycle_SN_moteur_1, Pheure_SN_moteur_2, Pcycle_SN_moteur_2, Pflightmanual_date, Pflightmanual_rev, Pflightmanualapprob_date, Pemptyweight, Pentretien_hors_cadre_approb, Pedprent, Pamdtprent, Ppedateed, Ppeapprobdate, Pperiodcheck1, Pperiodcheck2, Pperiodcheck3, Pperiodcheck4, Pperiodcheck5, Pperiodcheck6 ,Prowid]) }) } function dbDeleteRowflightlog(Prowid) { var db = dbGetHandle() db.transaction(function (tx) { tx.executeSql('delete from flight_log where rowid = ?', [Prowid]) }) }

@sierdzio
Also instead of QGraphicsItem We can use QGraphicsObject

Hi
Nice. Thank you for sharing.

Hi
Pr item , you can disable
item->setFlags(item->flags() & ~Qt::ItemIsEnabled);
If using a model, you can control from its Flags function
http://doc.qt.io//qt-5/qstandarditemmodel.html#flags

Hi @jss193

As @SGaist stated, you can always put the SVG item into a label or a button as its image.

Have you tried QSvgRenderer instead of loading the svg file into an image? You will need to add QT += svg to your PRO file and include <QSvgRenderer> in your file.

// Setup the painter to the QWidget (or use an image instead of a widget)
QPainter painter (this);
// Create the SVG object
QSvgRenderer renderer ("file.svg");
// Set the viewing box
renderer.setViewBox (painter.viewport ());
// Now set the scale or other transforms into the painter
...
// Render the image
renderer.render (&painter);

The problem with going into an image is that it will create either a MEGA huge image or a small image or a normal image based on the SVG document size. Then, scaling this image you lose all the nice smoothing and crispness using an SVG gives you. It is best to scale the SVG to the size you need and not the other way around.

I actually load an SVG into an image like you are doing and use it as a background for painting. This is actually faster than drawing the SVG each time (for my case) and the image looks crisp since the SVG is scaled and not the image.

Enjoy!

@Sprezzatura
Hi
Well i find it nice you are willing to share so
its more that direct exe link will be blocked by many.
However, a link to download from webpage IS more normal and
should work for most.
Thank you.

@YJCN
This new thread is not helpful, given that you are asking the same question in the thread you link to, and @aha_1980 has started answering you there. I suggest for everyone's benefit you stick to one or the other thread for your question, otherwise people will be answering in both places....

@LeLev
Yes when I use this code which is the one you gave me :

width: listView.currentItem.width/10; height: listView.currentItem.height

The Highlight start like that :

then it turn like that with an animation :

At strat it fill the delagate

I believe it is because I have to keep the highlightFollowsCurrentItem property to true. But if I change this I'll have trouble as soon as the ListView will scroll on the press of one button.
Here is what its looks like :

@JKSH Errors were:

error: missing binary operator before token "(" #if QT_DEPRECATED_SINCE(5, 3) Qt Creator code model “could not parse an included file” warning and errors in derived template classes: incomplete type 'QMetaObject' named in nested name specifier

The first one I fixed by renaming my header (and according cpp) files: system.h, process.h, filter.h. The second one was fixed after including into the project file the following variable: QT_OPENGL = desktop.

Yes, I am using my laptop to compile, and it has intel i7 2.2GHz with 4 cores and 8 logical processors. Well, basically I am using a dual boot, so the same hardware is applied for the working Linux version and non-working Windows version.

Giving the parameter in qt creator environment variable didn't work. But using qputenv() environment variable worked.

Hi @YJCN,

have you read the (still existing, wow!) links @SGaist recommended?

You might be interested by QWidget's "winEvent":http://qt-project.org/doc/qt-4.8/qwidget.html#winEvent or QCoreApplication's "winEventFilter":http://qt-project.org/doc/qt-4.8/qcoreapplication.html#winEventFilter

Regards

please tell me how to pass the data from send form to chaild form

How do you think about to take a bit more data modelling and corresponding presentation aspects into account? Would you like to clarify the amount of desired data exchange at these places?

edit: I missed the getitem. Thanks Ill do some digging!