Recent questions tagged qt4

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qt4 - QT + How to call slot from custom C++ code running in a different thread

I am new to QT and I am doing some learning. I would like to trigger a slot that modify a GUI widget ... a different thread. Thanks for helping See Question&Answers more detail:os...

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

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qt4 - Access values of dropActions in model (PySide/PyQt/Qt)

In a QTableModel when I enter the following: print model.supportedDropActions() I just get: <PyQt4.QtCore. ... and drop rows within QTableWidget See Question&Answers more detail:os...

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

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349 views

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qt4 - How to translate language in Qt on the fly

I am using Translator and linguist to translate language in my application in Qt symbain, But I want to do this on ... ); return 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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qt4 - Full-screen desktop application with QML

I have experience with developing rich user interface application with flex and AS3. However the issue is its ... applications using QT/QML? See Question&Answers more detail:os...

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

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384 views

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qt4 - Qt SSL support missing

I've just downloaded Qt (LGPL - Qt SDK for Windows) and when i run some of the demos they complain about Qt ... in the version i've downloaded? See Question&Answers more detail:os...

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

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441 views

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qt4 - Qt SSL support missing

I've just downloaded Qt (LGPL - Qt SDK for Windows) and when i run some of the demos they complain about Qt ... in the version i've downloaded? See Question&Answers more detail:os...

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

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344 views

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qt4 - Controls insist on being too large, and won't resize, in QtDesigner

I made a "widget" in Qt Designer with about a dozen controls organized into horiz. and vert. layouts. Oddly, ... a total caveman at 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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391 views

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qt4 - Removing a non empty folder in Qt

How to remove a non-empty folder 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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539 views

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qt4 - What's the difference between QMainWindow, QWidget and QDialog?

What's the difference between QMainWindow, QWidget and QDialog? See Question&Answers more detail:os...

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

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590 views

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qt4 - Showing a .gif animation in QLabel

I would like to show a .gif animation in a QLabel widget, alongside text. The following code won't work ... besides using two different labels? See Question&Answers more detail:os...

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

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435 views

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qt4 - Subclass of QObject, qRegisterMetaType, and the private copy constructor

I have a class that is a subclass of QObject that I would like to register as a meta-type. The ... MyClass(); } Q_DECLARE_METATYPE(MyClass); See Question&Answers more detail:os...

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

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300 views

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qt4 - Events and signals in Qt's QGraphicsItem: How is this *supposed* to work?

Like other primitives in Qt, QGraphicsItems can handle mouse events and the like. Sweet! Now say I need for an ... that meant to be addressed? See Question&Answers more detail:os...

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

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574 views

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qt4 - How to decode "application/x-qabstractitemmodeldatalist" in Qt for drag and drop?

I've created a child class of QTreeWidget that I want to be able to drag items from another tree widget too ( ... items from the tree back out? See Question&Answers more detail:os...

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

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438 views

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qt4 - How to use Dcmtk in Qt?

I am working on a project where I have to read a dicom image. I am unable to install dcmtk. I am using ... to include dcmtk in my program. See Question&Answers more detail:os...

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

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519 views

1 answer

qt4 - Qt: How to organize Unit Test with more than one class?

I have a Qt Unit test (sub)project, which generates me one class (with the main generated by ... the zip describing the solution. See Question&Answers more detail:os...

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

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532 views

1 answer

qt4 - How to get sender widget with a signal/slot mechanism?

It's possible to bind more than one signal to one slot (isn't?). So, is there a way to understand ... like sender argument of events in .NET See Question&Answers more detail:os...

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

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424 views

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qt4 - Qt QTableView how to have a checkbox only column

We are using a QTableView with Qt 4.6.3, and need a column that only has a checkbox in each cell. We're ... only have a checkbox, nothing else? See Question&Answers more detail:os...

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

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620 views

1 answer

qt4 - How can I hide/delete the "?" help button on the "title bar" of a Qt Dialog?

I am using Qt Dialogs in one of my application. I need to hide/delete the help button. But i am not able ... a particular flag on the Qt window. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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681 views

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qt4 - How to make a Qt Widget grow with the window size?

I want to have a small QFormLayout that grows to fill its parent widget. I created a new .ui file using the ... it. How can I accomplish that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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616 views

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qt4 - Qt 4: Move window without title bar

I have a Qt::Popup flagged window (which does not have a title bar and close etc buttons) and would ... but my requirement is crossplatform. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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