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qt qml 按钮颜色设置import QtQuick 2.2import QtQuick.Window 2.2import QtQuick.Controls 1.2import QtQuick.Controls.Styles 1.2Window { visible: true width: 640 height: 480 title: qsTr("Hello World") Rectangle{ width: 200;

qml demoimport QtQuick 2.9import QtQuick.Window 2.2//import QtQuick 2.4//import QtQuick.Controls 2.0Window { visible: true width: 640 height: 480 title: qsTr("Hello World") Rectangle{ width: 300; height: 200;

在pro文件中添加这个QT += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgets参考连接https://segmentfault.com/q/1010000000174461