Setting the Style in qml Qt

问题

I want to set the Style for my elements in qml. For that, I want to use a style like Material Style. Using the example which can be found under:

https://doc.qt.io/qt-5/qtquickcontrols2-material.html

import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Controls.Material 2.12

ApplicationWindow {
   visible: true

   Material.theme: Material.Dark
   Material.accent: Material.Purple

   Column {
       anchors.centerIn: parent

       RadioButton { text: qsTr("Small") }
       RadioButton { text: qsTr("Medium");  checked: true }
       RadioButton { text: qsTr("Large") }
     }
}

Gives me the result seen in the image I attached. No matter which Style I use, nothing changes.

I am currently using the newest free Qt version under a Windows 10 Os.

Can anyone help me? And is it possible to globally overwrite a Style and make an own Style, simply in QML.

enter image description here

回答1:

As the docs points out:

To run an application with the Material style, see Using Styles in Qt Quick Controls.

There are several ways to set the style in Qt Quick Controls 2:

Using QQuickStyle in C++:
- add QT += quickcontrols2 in your .pro and use #include <QQuickStyle> and QQuickStyle::setStyle("Material"); in main.cpp
Command line argument:
- You can run from the console/CMD by adding the argument: ./your_executable -style material.
- If you use Qt Creator you can go to Projects-> Build & Run-> Run and in Command line arguments add: -style material.

Environment variable:
- You can run from the console/CMD: QT_QUICK_CONTROLS_STYLE=material ./your_executable
- If you are using Qt Creator you can add it in the section Projects-> Build & Run-> Run-> Run Environment.
- or add qputenv("QT_QUICK_CONTROLS_STYLE", "material"); in main.cpp.

Configuration file:

The qtquickcontrols2.conf file must be created:

[Controls]
Style=Material

and must be in a qresource:

<RCC>
    <qresource prefix="/">
        <file>main.qml</file>
        <file>qtquickcontrols2.conf</file>
    </qresource>
</RCC>

回答2:

You have to set the style from C++ as well. See this Qt documentation.

So in you main add QQuickStyle::setStyle("Material");

来源：https://stackoverflow.com/questions/60221572/setting-the-style-in-qml-qt

标签

qml

styling