Top "Qt" questions

Application failed to start because it could not find or load the QT platform plugin "windows"

I have looked through all of the questions that appear to be related on stack overflow, and none of the …

c++ qt dll platform

How to install QtDesigner?

I just installed Qt 5.4.1 on Windows 7. And there is no QtDesigner. Also there is no QtDesigner in MaintenanceTool. How can …

qt qt-designer

Converting QString to char*

Possible Duplicate: QString to char conversion I have a function (fopen in STL) that gives a char* argument as a …

c++ string qt qt4

What does the Q_OBJECT macro do? Why do all Qt objects need this macro?

I just started using Qt and noticed that all the example class definitions have the macro Q_OBJECT as the …

c++ qt macros

Qt5 Static Build yields Failed to load platform plugin "windows"

I am writing a Qt application on Windows using Visual Studio 2012. Using the Qt Add-in and a custom built static …

c++ windows visual-studio qt qt5

Qt FullScreen on Startup

I want to start an application on fullscreen (MacOS 10.8.x, Qt 5.1.1, C++) depending on the settings: main.cpp #include "MainWindow.…

c++ macos qt fullscreen

Qt5 - setting background color to QPushButton and QCheckBox

I'm trying to change the background color of a QAbstractButton (either a QPushButton or QCheckBox) in Qt5 and having zero …

qt qt5 qpushbutton qcheckbox

Qt Layout on QMainWindow

I designed a QMainWindow with QtCreator's designer. It consists of the default central widget (a QWidget) which contains a QVBoxLayout …

qt layout qt-designer

How to redirect qDebug, qWarning, qCritical etc output?

I'm using a lot of qDebug() << statements for debug output. Is there any cross-platform way I can redirect …

c++ debugging qt mingw qdebug

How to make a column in QTableWidget read only?

I would like to have one column in QTableWidget NOT editable. In forums I have read a lot about some …

qt qt4 qtablewidget