Azure Pipeline run Qt application - qt

Question

Simpe Qt App 'untitled.exe':
#include <QCoreApplication>
#include <QtCore>
void parseCmd(const QCoreApplication &app)
{
QCommandLineParser parser;
parser.addHelpOption();
parser.addVersionOption();
parser.process(app);
}
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QCoreApplication::setApplicationVersion("1.0");
parseCmd(a);
return a.exec();
}
Output:
2020-12-15T19:06:08.1133300Z ##[section]Starting: Test code...
2020-12-15T19:06:08.1434531Z ==============================================================================
2020-12-15T19:06:08.1434873Z Task : Command line
2020-12-15T19:06:08.1435197Z Description : Run a command line script using Bash on Linux and macOS and cmd.exe on Windows
2020-12-15T19:06:08.1435509Z Version : 2.178.0
2020-12-15T19:06:08.1436101Z Author : Microsoft Corporation
2020-12-15T19:06:08.1436429Z Help : https://learn.microsoft.com/azure/devops/pipelines/tasks/utility/command-line
2020-12-15T19:06:08.1436801Z ==============================================================================
2020-12-15T19:06:09.5889046Z Generating script.
2020-12-15T19:06:09.6545863Z ========================== Starting Command Output ===========================
2020-12-15T19:06:09.7002067Z ##[command]"C:\windows\system32\cmd.exe" /D /E:ON /V:OFF /S /C "CALL "D:\a\_temp\cc51db57-c085-4347-873f-ed28f0e7af53.cmd""
2020-12-15T19:06:09.7240225Z 1 file(s) copied.
2020-12-15T19:06:09.7388204Z Volume in drive D is Temp
2020-12-15T19:06:09.7389142Z Volume Serial Number is 405E-826C
2020-12-15T19:06:09.7389470Z
2020-12-15T19:06:09.7389984Z Directory of D:\a\1\s\Release_WIN_x64
2020-12-15T19:06:09.7390270Z
2020-12-15T19:06:09.7390552Z 12/15/2020 07:06 PM <DIR> .
2020-12-15T19:06:09.7392444Z 12/15/2020 07:06 PM <DIR> ..
2020-12-15T19:06:09.7393989Z 12/15/2020 07:06 PM <DIR> bearer
2020-12-15T19:06:09.7394372Z 12/15/2020 07:06 PM <DIR> iconengines
2020-12-15T19:06:09.7394795Z 12/15/2020 07:06 PM <DIR> imageformats
2020-12-15T19:06:09.7395287Z 12/08/2020 02:33 PM 3,409,920 libcrypto-1_1-x64.dll
2020-12-15T19:06:09.7395702Z 12/08/2020 02:33 PM 682,496 libssl-1_1-x64.dll
2020-12-15T19:06:09.7399561Z 12/15/2020 07:06 PM 47,104 MainApp-1.0.0.exe
2020-12-15T19:06:09.7400169Z 12/15/2020 07:06 PM 594,944 MaintenanceTool-1.0.0.exe
2020-12-15T19:06:09.7400757Z 12/15/2020 07:06 PM <DIR> platforms
2020-12-15T19:06:09.7401416Z 05/11/2020 08:46 AM 5,998,712 Qt5Core.dll
2020-12-15T19:06:09.7401954Z 05/11/2020 08:47 AM 7,085,176 Qt5Gui.dll
2020-12-15T19:06:09.7404188Z 05/11/2020 08:47 AM 1,349,240 Qt5Network.dll
2020-12-15T19:06:09.7404743Z 05/11/2020 03:05 PM 329,848 Qt5Svg.dll
2020-12-15T19:06:09.7405277Z 05/11/2020 08:47 AM 5,516,920 Qt5Widgets.dll
2020-12-15T19:06:09.7405719Z 12/15/2020 07:06 PM <DIR> styles
2020-12-15T19:06:09.7406168Z 12/15/2020 07:05 PM 10,240 untitled.exe
2020-12-15T19:06:09.7406588Z 10 File(s) 25,024,600 bytes
2020-12-15T19:06:09.7407293Z 7 Dir(s) 11,920,207,872 bytes free
2020-12-15T19:06:09.8738006Z ##[error]Cmd.exe exited with code '-1073741701'.
2020-12-15T19:06:09.9214918Z ##[section]Finishing: Test code...
And i try to run that in azure pipeline but is failed to run with -v params (that should show version number).
As all dlls are in place, application is crashing, as also others apps are similar like in example 'MainApp' and 'MaintenanceTool' - using same 'core' stuff.
When i run 'MainApp' or 'MaintenanceTool' - azure wait forever, and only way to stop pipeline is cancel.
Weird thing is that i'm able to compile, but not run :/

Answer 1

Found problem, that is for Azure pipelines.
As Qt class QCommandLineParser is using 'qApp' that can be Core, or GUI app (in my case was QApplication) - when we run app with -v (default option for QCommandLineParser) was/is show MessageBox (just show GUI pop-up) with version.
So when we use that in 'command line pipe line' - there no way that we can click Ok on taht dialog.
Based on code from Can I use QCommandLineParser to determine GUI mode or CLI mode?
i made some example that is just print version - as this was requirement for me :)
#include <QApplication>
#include <QMessageBox>
#include <iostream> // For std::
#include <QtCore>
// Use any other flags from cmd ...
struct Options {
bool version = false;
};
Options parseCmd()
{
QCommandLineParser parser;
// parser.addVersionOption(); DO NOT USE THIS!
QCommandLineOption showVer("ver", "Show program version.");
parser.addOption(showVer);
// Procs args
parser.process(*qApp);
// Save data
Options opts = {};
opts.version = parser.isSet(showVer);
return opts;
}
int main(int argc, char *argv[])
{
std::cout << "Create core app" << std::endl;
QCoreApplication::setApplicationVersion("1.0");
// Create base core app
QScopedPointer<QCoreApplication> app(new QCoreApplication(argc, argv));
// Parse cmd parameters
std::cout << "Parse cmd params" << std::endl;
Options opt = parseCmd();
// If only display version
if(opt.version)
{
std::cout << "Display version" << std::endl;
std::cout << qApp->applicationVersion().toStdString() << std::endl;
} else
{
std::cout << "Run in gui mode" << std::endl;
// Reset app to GUI mode
app.reset();
app.reset(new QApplication(argc, argv));
}
//
if(qobject_cast<QApplication*>(qApp))
{
std::cout << "Show QMessageBox" << std::endl;
// Create any GUI stuff here
QMessageBox::information(nullptr, "Hello", "Hello, World!");
}
else
{
std::cout << "Send quit message" << std::endl;
// As we run QCoreApplication only for parsing cmd params ...
QMetaObject::invokeMethod(qApp, "quit", Qt::QueuedConnection);
}
//
return app->exec();
}
Also we need and extra line into project file: '''CONFIG += console'''
QT += core gui widgets
CONFIG += console
TEMPLATE = app
SOURCES += main.cpp
And that how we can 'show' version in command line ;)