问题描述
我在 qtcreator 中创建了一个 MainWindow : public QMainWindow
和一个 qtquick ui 文件(用于工具箱).我希望工具箱在主窗口中显示为浮动子窗口.我正在尝试为此使用 QMdiArea
.我看过的一个教程说我需要像这样向 QMdiArea
添加一个窗口:
I've created a MainWindow : public QMainWindow
and a qtquick ui file (for a toolbox) in qtcreator. I want the toolbox to appear as a floating subwindow in mainwindow. I'm trying to use QMdiArea
for that. A tutorial I've seen says that I need to add a window to the QMdiArea
like this:
mdi->addSubWindow(win);
其中 win
是一个 QWidget
.如何在我的 C++ 代码中使用使用 qml 创建的工具箱?
where win
is a QWidget
. How do I use the toolbox created with qml in my C++ code?
推荐答案
你可以使用QQuickWidget,但是要记住QML的根必须是Item或者继承自Item的类,不能是Window或者ApplicationWindow.
You can use QQuickWidget but remember that the root of the QML must be an Item or a class that inherits from the Item, it can not be Window or ApplicationWindow.
#include <QApplication>
#include <QMainWindow>
#include <QMdiArea>
#include <QQuickWidget>
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication app(argc, argv);
QMainWindow w;
QMdiArea *mdiarea = new QMdiArea;
w.setCentralWidget(mdiarea);
QQuickWidget *toolbar = new QQuickWidget(QUrl("qrc:/main.qml"));
toolbar->setResizeMode(QQuickWidget::SizeRootObjectToView);
mdiarea->addSubWindow(toolbar);
w.show();
return app.exec();
}
main.qml
import QtQuick 2.9
import QtQuick.Controls 2.4
Rectangle {
visible: true
width: 640
height: 480
color: "red"
Button{
text: "Stack Overflow"
anchors.centerIn: parent
}
}
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