I am using qChart.js in my QML project, and was able to access the libraries just fine by importing it into QML with
import jbQuick.Charts 1.0
and adding the resource path by hard-coding the file path
QQmlApplicationEngine engine;
engine.addImportPath("C:\\PathToProject\\qml\\");
However, I'd like to deploy my project and can't have a hard-coded path as this will change from user to user. I've attempted to add the files as specified in this question, so my qrc now has the following:
I've now modified my addImportPath statement to the following:
engine.addImportPath("qrc:///qml");
However, when running with QChart.qml and QChart.js included in the qrc file, I get the following error:
qmlcache_loader.obj:-1: error: LNK2001: unresolved external symbol "unsigned char const * const QmlCacheGeneratedCode::_qml_jbQuick_Charts_qml_jbQuick_Charts_QChart_js::qmlData" (?qmlData#_qml_jbQuick_Charts_qml_jbQuick_Charts_QChart_js#QmlCacheGeneratedCode##3QBEB)
qmlcache_loader.obj:-1: error: LNK2001: unresolved external symbol "unsigned char const * const QmlCacheGeneratedCode::_qml_jbQuick_Charts_qml_jbQuick_Charts_QChart_qml::qmlData" (?qmlData#_qml_jbQuick_Charts_qml_jbQuick_Charts_QChart_qml#QmlCacheGeneratedCode##3QBEB)
My understanding is that any file referenced in the qmldir must also be added to the qrc file, which would be QChart.qml and QChart.js. I should also add that I am running this in Release mode. In debug mode, I simply get the module "jbQuick.Charts" is not installed error. What am I doing wrong?
Related
I have seen boost-build / bjam: execute a script post install (make 'install' a dependency of executing a script) where there is a recommendation for using notfile. Then I found the https://www.boost.org/build/doc/html/bbv2/builtins/raw.html page with a basic example, where I've added the import notfile:
import notfile;
notfile echo_something : #echo ;
actions echo
{
echo "something"
}
And I've tried this snippet in a Jamroot file of a project. If I do not have the import notfile, then it fails with:
...
Jamroot:57: in modules.load
ERROR: rule "notfile" unknown in module "Jamfile</home/USER/src/myproject>".
/usr/share/boost-build/src/build/project.jam:372: in load-jamfile
/usr/share/boost-build/src/build/project.jam:64: in load
/usr/share/boost-build/src/build/project.jam:142: in project.find
/usr/share/boost-build/src/build-system.jam:618: in load
/usr/share/boost-build/src/kernel/modules.jam:295: in import
/usr/share/boost-build/src/kernel/bootstrap.jam:139: in boost-build
/usr/share/boost-build/boost-build.jam:8: in module scope
If I have the import notfile; then it fails with:
Jamroot:56: Unescaped special character in argument notfile;
/usr/share/boost-build/src/kernel/modules.jam:258: in modules.import from module modules
error: When loading multiple modules, no specific rules or renaming is allowed
/usr/share/boost-build/src/build/project.jam:1121: in import from module Jamfile</home/USER/src/myproject>
Jamroot:62: in modules.load from module Jamfile</home/USER/src/myproject>
/usr/share/boost-build/src/build/project.jam:372: in load-jamfile from module project
/usr/share/boost-build/src/build/project.jam:64: in load from module project
/usr/share/boost-build/src/build/project.jam:142: in project.find from module project
/usr/share/boost-build/src/build-system.jam:618: in load from module build-system
/usr/share/boost-build/src/kernel/modules.jam:295: in import from module modules
/usr/share/boost-build/src/kernel/bootstrap.jam:139: in boost-build from module
/usr/share/boost-build/boost-build.jam:8: in module scope from module
How can I get this to work?
Just noticed the "Jamroot:56: Unescaped special character in argument notfile" while writing the question which finally made sense (errors like "error: When loading multiple modules, no specific rules or renaming is allowed" are completely misleading and useless) - and I realized, I had written:
import notfile;
... that is, with semicolon directly after the word - it seems, here space is required; so with this change:
import notfile ;
... things start working again.
I recently downloaded the latest JavaFX SDK 12 and I wish to intercept Console Messages in my JavaFX WebView.
So, I have this
WebConsoleListener.setDefaultListener((webView, message, lineNumber, sourceId) -> {
//////// I am listening for a specific console message here in my
///webview
});
but I keep getting
Caused by: java.lang.IllegalAccessError: class rumbler.launcher.ApplicationLoader (in unnamed module #0x5c4c6905) cannot access class com.sun.javafx.webkit.WebConsoleListener (in module javafx.web) because module javafx.web does not export com.sun.javafx.webkit to unnamed module #0x5c4c6905
Here is my build.gradle file
javafx {
version = "12.0.1"
modules = ['javafx.base', 'javafx.controls', 'javafx.web']
}
Here are my VM OPTIONS
--module-path "path_to_\javafx-sdk-11.0.2\lib" --add-modules javafx.controls,javafx.fxml,javafx.web,javafx.base
.Am I missing something?
You are using private API, which is not advised.
Anyway, the error message is quite clear:
module javafx.web does not export com.sun.javafx.webkit to unnamed module #0x5c4c6905
Whenever you want to access some non-exposed package from your project (either modular on non-modular), you need to use --add-exports:
The command line option --add-exports $module/$package=$readingmodule exports $package of $module to $readingmodule. Code in $readingmodule can hence access all public types in $package but other modules can not. [source].
So in this case, the solution is straight forward:
--add-exports javafx.web/com.sun.javafx.webkit=ALL-UNNAMED \
--module-path "path_to_\javafx-sdk-11.0.2\lib" \
--add-modules javafx.web,javafx.fxml
I've followed the steps described in https://wiki.qt.io/How_to_link_to_a_dll
but, somehow I still get undefined reference errors.
This is what I did:
add to my .pro file the library folder path via INCLUDEPATH+=
add to my .pro file the .dll via LIBS+=
include the .dll (in my case "okFrontPanelDLL.h") via #include in my code
I don't know if it matters, but my library is taken from: http://intantech.com/files/RhythmStim_API_Release_170328.zip
and the extracted folder contains a single .dll and multiple source and header files (do i have to add all sources and headers from the library via SOURCES+= and HEADERS+=?).
Currently, I can declare a variable based on a class defined in the library
okCFrontPanel *dev;
but accessing functions defined for the class, e.g. calling the constructor like
dev = new okCFrontPanel;
leads to an undefined reference error.
edit: I tried direcly adding the source and header files form the library into my Sources folder instead of linking the library and the code works fine, so there is (probably) at least nothing wrong with how I am trying to use the functionalities of the library.
edit2: further information:
OS: Win 7 64 bit
Qt version: 5.9.0
compiler: MinGW 32bit
file location: /[PROJECT FOLDER]/mylibrary
#include <QCoreApplication>
#include "myLibrary/okFrontPanelDLL.h"
int main(int argc, char *argv[])
{
// QCoreApplication a(argc, argv);
// return a.exec();
printf("hello world\n");
okCFrontPanel *dev;
dev = new okCFrontPanel;
// dev->BoardModel;
// If only one Opal Kelly board is plugged in to the host computer, we can use this.
dev->OpenBySerial();
// Set XEM6010 PLL to default configuration to produce 100 MHz FPGA clock.
dev->LoadDefaultPLLConfiguration();
// Upload RhythmStim bitfile which is compiled from RhythmStim Verilog code.
dev->ConfigureFPGA("mylibrary/main.bit");
printf("omg dis is working\n");
}
i am using QtAV but getting this error so please help me:
QQmlApplicationEngine failed to load component
qrc:/main.qml:4 plugin cannot be loaded for module "QtAV": Cannot load library /home/intel/Qt5.7.0/5.7/gcc_64/qml/QtAV/libQmlAV.so: (libswresample.so.2: cannot open shared object file: No such file or directory)
at qrc:/main.qml:4 import QtAV1.6
using linux
The application cannot find your requested plugin.
You need to check if your import path is set correctly. If this is the case: please check if the plugin is installed correctly. You can use
export QML_IMPORT_TRACE=1
to check which import pathes are set.
And make sure, that all dependncies are installed as well. For instance libswresample ( see https://ffmpeg.org/libswresample.html )
I have created a plugin for my application. If I don't use the GDAL library in my code, my application can use this plugin (QPlugin loads it) and it works fine. But if I use classes from the GDAL library QPluginLoader can't load it and the errorstring() method returns ../serverplugin.dll Can't find module.
There are two exported symbols qt_plugin_instance and qt_plugin_query_verification_data in the plugin DLL (I found them with Dependency walker). QPluginLoader uses the QLibrary class internally to interface with the C symbols exported to the DLL. If I don't use GDAL I have only two exported symbols in all plugins at the beginning. When I use GDAL these two symbols are moved at the end of a big list of exported symbols. Maybe these two exported symbols should be at the beginning.
What am I doing wrong?
I had the same problem with QPluginLoader. In few words how I solved it: I create plugin library, let's say lib1.dll which use some stuff from lib2.dll. In my application I try to load lib1 via QPluginLoader.
QPluginLoader loader( adaptersDir.absoluteFilePath(fileName) );
AdapterInterface* adapterIface = qobject_cast<AdapterInterface*>(loader.instance());
In this case loader.instance() returns 0. Solution was to copy lib2.dll into application folder because an application use it for proper load plugin lib1.
QT_BEGIN_NAMESPACE
#define Plugin_iid "Plugin"
Q_DECLARE_INTERFACE(PluginInterface,Plugin_iid)
QT_END_NAMESPACE
Q_PLUGIN_METADATA(IID "PluginInterface" FILE "Plugin.json")
Q_INTERFACES(PluginInterface)