qt5

问题 I want to fix the position of pop-up menu in QML. When I click on a setting button,I want the pop-up menu will display at the fixed position. I did it by a day but can't. How can I do it in QML. Also, I want to change the size of menu item(width and Height). Hope your help! 回答1: That depends on QtQuick.Controls version. In 2.0 you can define size and position(and even more - you must do) import QtQuick 2.7 import QtQuick.Controls 2.0 //import QtQuick.Controls 1.4 import QtQuick.Window 2.0

问题 I want to fix the position of pop-up menu in QML. When I click on a setting button,I want the pop-up menu will display at the fixed position. I did it by a day but can't. How can I do it in QML. Also, I want to change the size of menu item(width and Height). Hope your help! 回答1: That depends on QtQuick.Controls version. In 2.0 you can define size and position(and even more - you must do) import QtQuick 2.7 import QtQuick.Controls 2.0 //import QtQuick.Controls 1.4 import QtQuick.Window 2.0

问题 I want to fix the position of pop-up menu in QML. When I click on a setting button,I want the pop-up menu will display at the fixed position. I did it by a day but can't. How can I do it in QML. Also, I want to change the size of menu item(width and Height). Hope your help! 回答1: That depends on QtQuick.Controls version. In 2.0 you can define size and position(and even more - you must do) import QtQuick 2.7 import QtQuick.Controls 2.0 //import QtQuick.Controls 1.4 import QtQuick.Window 2.0

问题 I want to fix the position of pop-up menu in QML. When I click on a setting button,I want the pop-up menu will display at the fixed position. I did it by a day but can't. How can I do it in QML. Also, I want to change the size of menu item(width and Height). Hope your help! 回答1: That depends on QtQuick.Controls version. In 2.0 you can define size and position(and even more - you must do) import QtQuick 2.7 import QtQuick.Controls 2.0 //import QtQuick.Controls 1.4 import QtQuick.Window 2.0

问题 I want to fix the position of pop-up menu in QML. When I click on a setting button,I want the pop-up menu will display at the fixed position. I did it by a day but can't. How can I do it in QML. Also, I want to change the size of menu item(width and Height). Hope your help! 回答1: That depends on QtQuick.Controls version. In 2.0 you can define size and position(and even more - you must do) import QtQuick 2.7 import QtQuick.Controls 2.0 //import QtQuick.Controls 1.4 import QtQuick.Window 2.0

问题 I want to fix the position of pop-up menu in QML. When I click on a setting button,I want the pop-up menu will display at the fixed position. I did it by a day but can't. How can I do it in QML. Also, I want to change the size of menu item(width and Height). Hope your help! 回答1: That depends on QtQuick.Controls version. In 2.0 you can define size and position(and even more - you must do) import QtQuick 2.7 import QtQuick.Controls 2.0 //import QtQuick.Controls 1.4 import QtQuick.Window 2.0

问题 All my dialogs appear on the top left corner of screen instead of the center. What is the best way to let the dialogs be placed automatically correct? import QtQuick 2.7 import QtQuick.Controls 2.2 ApplicationWindow { id: mainWindow visible: true width: 640 height: 480 title: qsTr("Hello World") Component.onCompleted: { showMessageBox('Hey this actually works!'); } function showMessageBox(message) { var component = Qt.createComponent("MessageDialog.qml") if(component.status == Component.Ready

问题 When I cross-compile Qt 5.8.0 from source myself and use it to build the Qt "Dynamic Layouts" example from Qt Widgets for Microsoft Windows, it looks old-fashioned, as if it were running on Windows 2000, as shown in the left window below. However, if I compile the exact same program using the pre-built mingw-w64-x86_64-qt5-static package (version 5.8.0-1) from MSYS2, it looks like a nice modern Windows application, as shown in the right window below. How can I fix my version of Qt so that

问题 In my Qt5 application, I'm trying to implement UDP : port = _M_PORT; socket = new QUdpSocket(this); //socket->bind(QHostAddress("192.168.0.100"),port); socket->bind(QHostAddress("192.168.0.108"),port); connect(socket,SIGNAL(readyRead()),this,SLOT(readyRead())); Also tried : socket = new QUdpSocket(this); socket->connectToHost("192.168.0.108",port); socket->bind(port); IP address of my PC is 192.168.0.108 and IP address of my Android phone is 192.168.0.100 . I'm reading datagrams from UDP like

问题 In my Qt5 application, I'm trying to implement UDP : port = _M_PORT; socket = new QUdpSocket(this); //socket->bind(QHostAddress("192.168.0.100"),port); socket->bind(QHostAddress("192.168.0.108"),port); connect(socket,SIGNAL(readyRead()),this,SLOT(readyRead())); Also tried : socket = new QUdpSocket(this); socket->connectToHost("192.168.0.108",port); socket->bind(port); IP address of my PC is 192.168.0.108 and IP address of my Android phone is 192.168.0.100 . I'm reading datagrams from UDP like