qt5

问题 We are converting some older QT widget code to use QML and I cannot find the equivalent property for the QFont::setStretch() operation. The QML Font page shows only family, bold, italic, underline, pointSize, pixelSize, weight, overline, strikeout, capitalization, letterSpacing, wordSpacing, kerning, preferShaping and hintingPreference. This font selection is being done within a Text object, along the lines of: Text { font.family: "LiberationSans" font.pixelSize: 178 font.weight: 80 //font

问题 We are converting some older QT widget code to use QML and I cannot find the equivalent property for the QFont::setStretch() operation. The QML Font page shows only family, bold, italic, underline, pointSize, pixelSize, weight, overline, strikeout, capitalization, letterSpacing, wordSpacing, kerning, preferShaping and hintingPreference. This font selection is being done within a Text object, along the lines of: Text { font.family: "LiberationSans" font.pixelSize: 178 font.weight: 80 //font

问题 I have a QGraphicsPixmap item in a QGraphicsScene . The item has flags set to ItemIsMovable , and ItemIsSelectable . How do I ensure that when the item is moved out of a certain boundary - it can be a QGraphicsScene or just a fixed frame size at fixed coordinates - the part becomes hidden? Eg. The left part of the basketball becomes hidden. 回答1: You have to use setClipPath() . In the following code I have created a class that inherits from QGraphicsPixmapItem (the same could do with other

问题 One of the programs that I work with has two modes that it can run in: GUI (Graphical User Interface) mode or CLI (Command-Line Interface) mode. We determine which mode to use via a command line argument (i.e., if "--cli" is passed, it will use CLI mode). The type of QApplication that is instantiated depends on which mode is used: QApplication should be used for GUI mode, and QCoreApplication should be used for CLI mode, because the GUI parts of Qt should not be instantiated for CLI mode

问题 I want to use QRadioButton for displaying some state, which cannot be changed by the user; i.e. to use it in a "read-only mode". Which is better to use: setCheckable() or empty functionality of click()? 来源： https://stackoverflow.com/questions/35651905/how-to-make-qradiobutton-to-read-only

问题 I'm trying to add rows to a table from Python. I'm using a TableView described with QML. I can't figure out how to add a model to the table, unless the model is also in QML. But I can't figure out how to add values to the model. import sys from PyQt5.QtCore import QAbstractTableModel, QObject, QUrl from PyQt5.QtQml import QQmlApplicationEngine from PyQt5.QtQuick import QQuickView from PyQt5.QtWidgets import QApplication myApp = QApplication(sys.argv) engine = QQmlApplicationEngine() context =

问题 I´m using a QTableView to show a database table via model. One of the table columns have a timestamp, acctually a QDateTime was stored there before. Is there some way to format the timestamp value at presentation time? I was thinking in something like the .toString of a QDateTime("yyyy-MM-dd hh:mm:ss.zzz") . 回答1: It is possible to return date formatted as you wish in this virtual method of QAbstractItemModel : QVariant QAbstractItemModel::data(const QModelIndex &item, int role = Qt:

问题 I´m using a QTableView to show a database table via model. One of the table columns have a timestamp, acctually a QDateTime was stored there before. Is there some way to format the timestamp value at presentation time? I was thinking in something like the .toString of a QDateTime("yyyy-MM-dd hh:mm:ss.zzz") . 回答1: It is possible to return date formatted as you wish in this virtual method of QAbstractItemModel : QVariant QAbstractItemModel::data(const QModelIndex &item, int role = Qt:

问题 I'm getting below yocto build error and I'm not sure what is the problem. I am trying to build yocto for my warpx board. Able to build headless image but not headfull. Can you please anyone point out any issue ? I have used yocto krogoth version with freescal platform bsp. These are the commands I followed. repo init -u https://github.com/Freescale/fsl-community-bsp-platform -b krogoth repo sync cd sources git clone https://github.com/Kynetics/meta-warpx.git cd meta-warpx git checkout krogoth

问题 I'm getting below yocto build error and I'm not sure what is the problem. I am trying to build yocto for my warpx board. Able to build headless image but not headfull. Can you please anyone point out any issue ? I have used yocto krogoth version with freescal platform bsp. These are the commands I followed. repo init -u https://github.com/Freescale/fsl-community-bsp-platform -b krogoth repo sync cd sources git clone https://github.com/Kynetics/meta-warpx.git cd meta-warpx git checkout krogoth