QQmlApplicationEngine failed to load component

imxande

Hi fam,

So I have encounted a problem for a particular personal project that I am setting up. Basically, this has never happened in other projects when I try to load QML. I have always done it this way and QQmlApplicationEngine always loads the module but today is a no no. Here is what I got also far, basic setup:
This is my main.cpp file:

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QDebug>

int main(int argc, char *argv[]) {
  // create application
  QGuiApplication app(argc, argv);

  // engine
  QQmlApplicationEngine engine;

  qDebug() << "Import paths:" << engine.importPathList();

  // load QML
  engine.loadFromModule("smartlights", "Main");

  return app.exec();
}

This is my cmake file:

cmake_minimum_required(VERSION 3.28)

project(nitenite VERSION 1.0.0 LANGUAGES CXX)

find_package(Qt6 REQUIRED COMPONENTS Quick)

qt_standard_project_setup(REQUIRES 6.8)


set(CMAKE_STANDARD_CXX 20)
set(CMAKE_STANDARD_CXX_REQUIRED ON)

qt_add_executable(${PROJECT_NAME}
  src/main.cpp
)

qt_add_qml_module(smartLightsModule
  URI smartlights
  VERSION 1.0
  QML_FILES qml/smartlights/Main.qml
)
target_link_libraries(${PROJECT_NAME} PRIVATE Qt6::Quick)

Here simplified file structure:

And finally the infamous error:

First time experiencing this error, I have always load QML into this type of application this way, and it always works.
Note that if I add engine.addImportPath("qt/qml") to my main.cpp file the engine finds the module but I never had to do this before and want to understand what is really happening.

In any case thank you all in advance, please help!!

GrecKo

Your executable is not linked to your QML module.

JKSH

@imxande said in QQmlApplicationEngine failed to load component:

want to understand what is really happening.

One way to start doing this is to inspect your embedded resources:

QDirIterator qrc(":", QDirIterator::Subdirectories);
while(qrc.hasNext())
    qDebug() << qrc.next();

Note that if I add engine.addImportPath("qt/qml") to my main.cpp file the engine finds the module

What does engine.importPathList() produce after you do that?