QtQuick.Controls.Material.impl not found

[CerpherJoe]

I'm having difficulty getting to the QuickControls2-material objects. In Designer, When I import 'QtQuick.Controls.Material' no such QML Types are made available to add to the canvas.

Separately, I 'double-clicked' on the slider.qml file in the directory C:\QT\5.12.6\mingw73_64\qml\QtQuick\Controls.2\Material. This brings up the QML file in QC and indicates that one of the iterms, "handle: SliderHandle" is undefined. It is probably in the QML module "QtQuick.Controls.Material.impl" whose import statement is also flagged "not found".

Anybody know why this might be the case, or where I can find said module (i.e., the .impl file)?

Install info:
Qt Creator 4.11.0
Based on Qt 5.14.0 (MSVC 2017, 32 bit)
From revision 017ed74400

Thanks!
Joe
Built on Dec 10 2019 12:27:18

[sierdzio]

What import statements do you use in your QML file?

Did you add Quick Controls 2 to QT variable in qmake? QT += quickcontrols2

Which Qt version are you building this project against? (not Qt creator version, but Qt version used in your Kit)

[CerpherJoe]

@sierdzio said in QtQuick.Controls.Material.impl not found:

QT += quickcontrols2

Thanks sierdzio for your help.

I have installed Qt 5.14.0.

I create the project. Looking for the Material QML types, I import 'QtQuick.Controls.Material 2.12' in the Design view. I have the following import statements in my QML file:

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls.Material 2.0
import QtQuick.Controls 2.3

When I hover over these in the Edit view, a bubble indicates: 'Read typeinfo files successfully'.

However, I do not have access to the Material QML types when I return to the Design window. I do have the 'QT Quick - Controls 2' sub-window that has all of those types available for dragging onto the canvas - but not Material.

I added the 'QT += quickcontrols2' statement to qmake, saved the files and closed and re-opened the project with no luck.

When I double-click on the Material 'slider' QML file in the distribution it brings it up in QC with the following:

import QtQuick 2.12
import QtQuick.Templates 2.12 as T
import QtQuick.Controls.Material 2.12
import QtQuick.Controls.Material.impl 2.12 * QML module not found (QtQuick.Controls.Material.impl).

This makes me think that file is missing from my (Windows) distribution.

Thanks,

Joe

[CerpherJoe]

@CerpherJoe

I found out what I was doing wrong.

Simply, a 'style' can be looked at as applying to a basic set of controls and not as it's own set of controls.

Once configured correctly (below) one simply drags the basic controls to the canvas and they retain their 'un-stylized' look. Once you build and run the program, the resulting window will show the 'stylized' QML type. In my case, a 'slider'.

To configure a Quick Controls style to work:

1. Add QT += quickcontrols2 to your project .pro file (thanks @sierdzio !)

2. Edit your main.cpp file to turn the style on (in my case 'Material'):

    #include <QQuickStyle>
         QQuickStyle::setStyle("Material");                   (in the main section)
   

3. Use the Design mode Imports window to add the following to the main.qml file:

   import QtQuick.Controls 2.3
   import QtQuick.Controls.Material 2.0

4. Add controls to the canvas as desired. Build. You will see the controls now in your chosen style.