部署Qt5 QML应用程序 [英] Deploy Qt5 QML application

问题描述

为了测试QML部署，我创建了一个非常简单的QML应用程序。这是代码：

main.cpp

  #include< QApplication> 
 #include< QQmlApplicationEngine> 
 #include< QFile> 
 
 int main（int argc，char ** argv）{
 QApplication app（argc，argv）; 
 QQmlApplicationEngine引擎; 
 
 QString path = app.applicationDirPath（）+/qml/main.qml; 
 if（QFile :: exists（path））
 engine.load（path）; 
 else {
 return 1; 
} 
 return app.exec（）; 
} 
  

main.qml

< pre class =lang-js prettyprint-override> import QtQuick 2.2
import QtQuick.Controls 1.2

ApplicationWindow {
id：mainWindow
标题：测试窗口
width：800
height：600
visible：true
}


为了确保系统中没有安装开发库，我已经设置了一个纯Windows XP安装的虚拟机。然后，我按照此处所述的说明进行操作，并复制<强>全部 Qt5 * .dll进入程序目录，以及平台/ qwindows.dll和icu * 52.dll。依赖性Walker证实没有遗漏的依赖关系，即一切都应该已经正确设置了。

然而，由于某些原因，当我运行我的应用程序时，我什么也看不见。窗口也不是错误信息。从控制台运行也给我没有错误。尽管如此，我可以看到我的应用程序在任务管理器中运行，就像在后台运行一样。在开发机器上运行应用程序没有问题：应用程序正确启动，我可以看到它的窗口。

我做错了什么？如何部署QML应用程序，以确保它可以在任何其他非开发机器上运行？

解决方案

如果您使用MinGW，然后尝试从您的程序将文件夹 qml 和插件中的所有文件夹复制到目录。也复制库： icudt52.dll ， icuin52.dll ， icuuc52.dll ， libgcc_s_dw2-1.dll ， libstdc ++ - 6.dll ， libwinpthread -1.dll ， Qt5Core.dll ， Qt5Gui.dll ， Qt5Network.dll ， Qt5Qml.dll ， Qt5Quick.dll ， Qt5Svg.dll ， Qt5Widgets.dll 从 bin

最终目录将如下所示：

• Enginio


• imageformats
• 平台


• Qt


• QtGraphicalEffects


• QtPositioning
$ b $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $

• QtWebKit


• QtWinExtras


• icudt52.dll


• icuin52.dll


• icuuc52.dll


• libgcc_s_dw2-1.dll


• libstdc ++ - 6.dll


• libwinpthread-1.dll


• Qt5Core.dll


• Qt5Gui.dl l


• Qt5Network.dll


• Qt5Qml.dll


• Qt5Quick.dll


• Qt5Svg.dll


• Qt5Widgets.dll


• YOUR_PROGRAM.exe

这种方式适用于没有安装Qt的WindowsXP / Win7。

To test QML deployment I've created a very simple QML application. Here is the code:

main.cpp

#include <QApplication>
#include <QQmlApplicationEngine>
#include <QFile>

int main(int argc, char **argv) {
    QApplication app(argc, argv);
    QQmlApplicationEngine engine;

    QString path = app.applicationDirPath() + "/qml/main.qml";
    if(QFile::exists(path))
        engine.load(path);
    else {
        return 1;
    }
    return app.exec();
}

main.qml

import QtQuick 2.2
import QtQuick.Controls 1.2

ApplicationWindow {
    id: mainWindow
    title: "Test window"
    width: 800
    height: 600
    visible: true
}

To be sure no development library was installed in the system, I've set up a virtual machine with a pure Windows XP installation. Then, I've followed instructions as described here and copied all Qt5*.dll into the program directory, as well as platforms/qwindows.dll and icu*52.dll. Dependency Walker confirmed that no broken dependencies were left, i.e. everything should have been correctly set up.

However, for some reasons, when I run my app I see nothing. Neither a window, nor an error message. Running from console also gives me no error. Despite this, I can see my app running in the Task manager, like it is running in background. Running the app on the development machine goes without problem: the app correctly starts and I can see its windows.

What am I doing wrong? How can I deploy a QML app to be sure it will work on any other - non development - machine?

解决方案

If you use MinGW, then try to copy all folders from folders qml and plugins to directory with your program. Also copy libraries: icudt52.dll, icuin52.dll, icuuc52.dll, libgcc_s_dw2-1.dll, libstdc++-6.dll, libwinpthread-1.dll, Qt5Core.dll, Qt5Gui.dll, Qt5Network.dll, Qt5Qml.dll, Qt5Quick.dll, Qt5Svg.dll, Qt5Widgets.dll from bin

Eventually the directory will look like this:

• Enginio
• imageformats
• platforms
• Qt
• QtGraphicalEffects
• QtPositioning
• QtQml
• QtQuick
• QtQuick.2
• QtSensors
• QtWebKit
• QtWinExtras
• icudt52.dll
• icuin52.dll
• icuuc52.dll
• libgcc_s_dw2-1.dll
• libstdc++-6.dll
• libwinpthread-1.dll
• Qt5Core.dll
• Qt5Gui.dll
• Qt5Network.dll
• Qt5Qml.dll
• Qt5Quick.dll
• Qt5Svg.dll
• Qt5Widgets.dll
• YOUR_PROGRAM.exe

This way works on WindowsXP/Win7 where Qt was not installed.

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