Questions tagged [qqmlengine]
26 questions
0
votes
1 answer
QT/QML application crashes due to object ownership issue
I have a Qt/Qml application which uses a static Qt C++ library. The classes (models etc.) reside in the library whose objects are created in the application's main.cpp or QML files. Some of the classes are derived from QObject. I get segmentation…
Shariq
- 25
- 2
- 8
0
votes
0 answers
Binding loop detected for property "foreground"
My application is running very well inside Ubuntu operational system. But when I try to run it inside the Yocto using Boot2Qt it throws the following error message:
QML ToolBar (parent or ancestor of Material): Binding loop detected for property…
Mario De Santis
- 15
- 6
0
votes
1 answer
Handling with pages in qml
I've just begun to learn Qml.Altought i read too many qt tutorial, still struggling with some problems.
I want to make multipages desktop application using OpenGL.
First of all, in main function of the program, i am transmitting class instance so…
selman
- 9
- 3
0
votes
2 answers
Create QML plugin with CMake
I'm trying to create simple QML C++ plugin using CMake. There are my sources:
CMakeLists.txt:
cmake_minimum_required(VERSION 2.8.12)
project(qmltest LANGUAGES CXX)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
#…
Shadasviar
- 466
- 5
- 15
0
votes
1 answer
QQmlApplicationEngine not completely unloading qml components
I'm currently loading my main.qml using QQmlApplicationEngine and works fine, and then I want to switch to main2.qml (without calling quit() on my QQmlApplicationEngine since that triggers QCoreApplication::exit() which will exit my application).…
blessedone
- 160
- 1
- 8
0
votes
1 answer
How to set a QML instantiated item as a QImageProvider
I have a class that inherits QQuickItem and QQuickImageProvider. This class is instantiated from qml. I need to call QQmlEngine::addImageProvider so that this class can actually provide images. I should be able to get the engine that my object…
DJMcMayhem
- 7,285
- 4
- 41
- 61
0
votes
0 answers
instantiate c++ struct in qml js functions
how can initial an object from a c++ struct and send them to c++ class like this :
//c++
struct sRange
{
float min;
float max;
};
qmlRegisterType("sRange", 0, 1, "sRange");
//QML
import sRange 0.1
function newRange()
{
sRange range;
…
SajadBlog
- 514
- 2
- 12
0
votes
1 answer
Render a QQuickItem on a second window without changing its parent hierarchy
I have to render a QQuickItem owned by a particular window, into another. Basically MyQQuickItem owned by window1 to be rendered on window2. This switch has to happen in my app repeatedly due to a certain functionality.
I do the following to achieve…
TheWaterProgrammer
- 7,055
- 12
- 70
- 159
-1
votes
1 answer
Dynamically load QQuickWindow instead of QQuickWidget in Qt C++ unit test
In our project we have C++ unit tests for QML sources. It uses following code to load component dynamically for further processing
class MyTest {
...
QScopedPointer quickWidget;
QQuickItem* root = nullptr;
void…
Aleksey Kontsevich
- 4,671
- 4
- 46
- 101
-1
votes
1 answer
Instantiate a c++ class in FileDialog (QtQuick Object), report error: Cannot assign object to property
Codes:
//main.qml
import im.sniper.DgConfigFileHandler 1.0
import QtQuick.Dialogs 1.2
...
FileDialog{
id: fileDlg
DgConfigFileHandler {id: dgCfgFileHandler2}
}
I complie codes well and run, then get errors like:
QML debugging is enabled.…
Crawl.W
- 403
- 5
- 17
-2
votes
2 answers
QML function invoked from C++ not able to update element
I am invoking a QML function from C++. Issue is the QML function cannot update a QML element when invoked from C++. below is code:
In main.qml:
import QtQuick 2.0
function myQmlFunction(msg) {
console.log("Got message:", msg)
textbox.text =…
Sparkskie
- 1
- 1