Recent questions tagged qt

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qt - How to draw control with QStyle and with specified QSS?

I'm trying to draw a checkbox in QStyledItemDelegate. I want checkbox to be drawng not with native look, but with ... this method is too heavy. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Turning WA_TranslucentBackground off stops window repainting

I have a PyQt4.9 window where I would like to toggle the translucency on or off. The reason being is that it ... show() sys.exit(app.exec_()) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - QEventLoop: Cannot be used without QApplication

I'm trying to validate an xml file against a specific schema. So I'm loading the schema into the QXmlSchema ... to solve this problem. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Why changing LD_LIBRARY_PATH has no effect in Ubuntu?

I was trying to deploy my application on Ubuntu 16.04. So i made a package with the following hierarchy - ... folder. Here is the output - See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Hide QScrollBar arrows

How to hide QScrollBar arrows? I need to hide in horizontal scrollbar. I was trying to hide with setStyleSheet: ... but it doesn't work. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Moving the cursor in a PyQt5 text edit doesn't work

I'm contributing to Frescboaldi, a PyQt5 application and experience problems interacting with the core text edit ... '__main__': main() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Set Environment Variables for startDetached() QProcess

In Qt4, there is QProcess::setProcessEnvironment() for setting Env variables for the newly spawn process. However, ... detached process in Qt? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Automatically resizing a window based on its contents

I have a QDialog subclass that contains a spacer as its only immediate child; all of the window's UI elements are ... up doing in that case.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Translations of QMessageBox not work in Qt5.3

I'm a fan of Qt and update it frequently, Qt5.1->5.2->5.3. However, the tranalations of Standard ... to use some improvements in new Qts. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Passing Q_GADGET as signal parameter from C++ to QML

Can't get a property of a C++ object inside a QML code. Object is passed as a parameter to the signal. ... qml: QVariant(Record) qml: undefined See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Macro expansion in moc

I'd like to store some class info using Q_CLASSINFO macro. However I would like to wrap it in my own macro ... you know any workaround for this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - error C2440: 'default argument': cannot convert from 'const wchar_t [1]' to 'BSTR'

I am getting below error while using this command qmake.exe project.pro -r -spec win32-msvc2015 C:Program Files ( ... what it needing for 2015? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Regular Expression Filter for QFileDialog

I would like to display a file open dialog that filters on a particular pattern, for example *.000 to *. ... that has a three digit extension. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - How to use QtSingleApplication?

MacOSX10.8 + Qt5.1 with clang 64bit Create Qt Gui application in the main.cpp I just add #include < ... where to download source code? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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703 views

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qt - How to show clickable QFrame without loosing focus from main window?

Finally I am able to create a chrome like tab in Qt/PyQt QMainWindow. After unsuccessfully trying to port this ... app.exec_() Any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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630 views

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qt - looking for example for QCompleter with segmented completion / tree models

The PySide docs include this section on QCompleter with tree models: PySide.QtGui.QCompleter can look for completions in ... '__main__': main() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - C++ declare platform independent 32-bit float

Is there a way to declare 32-bit floating point value in C++ - ensuring that it will always be 32 bits ... changes size depending on platform). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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870 views

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qt - How to undo edit of QStandardItem in PySide/PyQt?

Using the identical question asked about QListWidgets as a guide, I am trying to make a QStandardItemModel in which I ... == "__main__": main() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Cannot execute echo command in QProcess

I want to launch a SCPI command in my device using netcat utility under Ubuntu 10.04 LTS with Qt. My code ... I'm doing wrong? Many thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - PyQt5 one signal and multiple slots

I have come up with a simple signal/slot mechanism below. The signal is called by QSlider when the value is changed ... ) sys.exit(app.exec_()) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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997 views

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qt - Static build of QtWebEngine dependent application

I have an application (audio player for http://vk.com) which uses OAuth 2.0 authorization. What i did ... Any help would be much appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - QNetworkAccessManager get/post from different thread possible?

I have a single QNetworkAccessManager object (as Qt docs recommend). However, I need to obtain a request from ... get/post from another thread? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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966 views

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qt - Running code in the main loop

I need a way to run an update function of my own in the main thread. I couldn't find a signal that would ... want to run something in a loop? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Android back button press doesn't trigger keys.onreleased qml

I am creating a program in Qt5.3 and Qtquick2.1. I am trying to capture back button press on android in ... wrong here? Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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qt - Qml timer not triggered in the right interval

I've created a timer QML app, and I'm using Timer qml component. The interval is set to 1000 milliseconds (the default ... 2 QML 2.0 OS X 10.9 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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qt - Qstring to LPCWSTR

LPCWSTR path; void WinApiLibrary::StartProcess(QString name) { path = name.utf16(); CreateProcess(path, NULL, NULL, ... 's wrong with this guy? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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qt - MySQL TIMESTAMP to QDateTime with milliseconds

If I use a QSqlTableModel to access a MySQL database I can convert a TIMESTAMP field using the following: QDateTime ... 2014-06-22T22:11:44. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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922 views

1 answer

qt - Play a video with custom overlay graphics

I want to play a video (with sound) in a simple GUI with "play" and "stop" buttons etc. There are ... this. Any pointers would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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