我开始了一个只有 C++ 代码的 Qt 项目，此时一切正常。这是我的配置以及部署可执行文件所遵循的步骤:

在 Windows10 64 位、x64 处理器、联想 Thinkpad 平板电脑上编程。使用Qt5.9框架和MinGW32bit编译器。

• (1) 我首先构建项目并在我的构建目录的副本上启动 windeployqt.exe。
• (2) 然后，我将每个 DLL 和可执行文件放入一个 Wix 项目中，以制作一个 MSI 包。据我所知，此 MSI 安装程序的输出应该只是将文件复制到 ProgramFiles 目录，然后将正确的快捷方式添加到开始菜单和桌面.

此时，一切正常。但几天后，QML 代码被添加到项目中(因此一些 OpenGL 依赖插件)。我添加了一个 QQuickWidget，它在我的视口(viewport)上实例化了一个 QML 地理 map 对象。在我设法让它在 Windows 上运行后，我再也无法获得独立 * 可执行文件。使用 Qt IDE 运行它可以，但是运行独立 * 可执行文件则不行。 (很抱歉，如果条款不正确:独立，带有 DLL 和大量文件依赖项)

当所有 DLL 都被复制到可执行文件夹中时，(上面的步骤 1)应用程序卡在后台，什么也不显示。也没有运行时错误来调试它或找出丢失的 DLL(如果有的话)。

我的想法是一些 QML 插件没有加载，或者 OpenGLES 和 Angle 出了问题，这里是我作为依赖项获得的一些 DLL:

• D3Dcompiler_47.dll libEGL.dll libgcc_s_dw2-1.dll libGLESV2.dll libstdc++- 6.dll opengl32sw.dll Qt5Core.dll Qt5Gui.dll Qt5Network.dll Qt5Positioning.dll Qt5Qml.dll Qt5Quick.dll Qt5QuickWidgets.dll Qt5SerialPort.dll Qt5Svg.dll Qt5Widgets.dll 与可执行文件同级。
• qwindows.dll 放入“platforms”文件夹，以及一些其他文件夹，例如“qmltooling”、“position”、“platforminputcontexts”...(EDIT 和似乎是相关的 QML 插件目录)。

我不知道它会是什么。有人知道吗？

将环境变量 QML_IMPORT_TRACE 设置为 1 时的输出。qt.network.ssl ... 消息不是 qml 跟踪的一部分。自从我添加了 QML 映射以来，我总是得到它们，但在通过 Qt Creator 运行时它似乎不是问题。

QQmlImportDatabase::addImportPath: "C:/Qt/5.9/mingw53_32/qml"
QQmlImportDatabase::addImportPath: "qrc:/qt-project.org/imports"
QQmlImportDatabase::addImportPath: "C:/Users/hermes/Documents/build-MyApplication-Desktop_Qt_5_9_0_MinGW_32bit-Release/src/release"
QQmlImportDatabase::addImportPath: "C:/Qt/5.9/mingw53_32/qml"
QQmlImportDatabase::addImportPath: "qrc:/qt-project.org/imports"
QQmlImportDatabase::addImportPath: "C:/Users/hermes/Documents/build-MyApplication-Desktop_Qt_5_9_0_MinGW_32bit-Release/src/release"
QQmlImports(qrc:/qml.qrc/main.qml)::addLibraryImport: "QtQuick" 2.0 as ""
QQmlImports(qrc:/qml.qrc/main.qml)::importExtension: loaded "C:/Qt/5.9/mingw53_32/qml/QtQuick.2/qmldir"
QQmlImportDatabase::registerPluginTypes: "QtQuick" from "C:/Qt/5.9/mingw53_32/qml/QtQuick.2"
QQmlImports(qrc:/qml.qrc/main.qml)::addLibraryImport: "QtQuick.Controls" 1.4 as ""
QQmlImports(qrc:/qml.qrc/main.qml)::importExtension: loaded "C:/Qt/5.9/mingw53_32/qml/QtQuick/Controls/qmldir"
QQmlImportDatabase::registerPluginTypes: "QtQuick.Controls" from "C:/Qt/5.9/mingw53_32/qml/QtQuick/Controls"
QQmlImports(qrc:/qml.qrc/main.qml)::addLibraryImport: "QtLocation" 5.9 as ""
QQmlImports(qrc:/qml.qrc/main.qml)::importExtension: loaded "C:/Qt/5.9/mingw53_32/qml/QtLocation/qmldir"
QQmlImportDatabase::registerPluginTypes: "QtLocation" from "C:/Qt/5.9/mingw53_32/qml/QtLocation"
QQmlImports(qrc:/qml.qrc/main.qml)::addLibraryImport: "QtPositioning" 5.5 as ""
QQmlImports(qrc:/qml.qrc/main.qml)::importExtension: loaded "C:/Qt/5.9/mingw53_32/qml/QtPositioning/qmldir"
QQmlImportDatabase::registerPluginTypes: "QtPositioning" from "C:/Qt/5.9/mingw53_32/qml/QtPositioning"
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "PluginParameter" => "QDeclarativeGeoServiceProviderParameter" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "MapQuickItem" => "QDeclarativeGeoMapQuickItem" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "Image" => "QQuickImage" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "Rotation" => "QQuickRotation" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "Map" => "QDeclarativeGeoMap" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "Plugin" => "QDeclarativeGeoServiceProvider" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "Connections" => "QQmlConnections" TYPE
QQmlImports(qrc:/qml.qrc/main.qml)::resolveType: "Component" => "QQmlComponent" TYPE
qt.network.ssl: QSslSocket: cannot resolve TLSv1_1_client_method
qt.network.ssl: QSslSocket: cannot resolve TLSv1_2_client_method
qt.network.ssl: QSslSocket: cannot resolve TLSv1_1_server_method
qt.network.ssl: QSslSocket: cannot resolve TLSv1_2_server_method
qt.network.ssl: QSslSocket: cannot resolve SSL_select_next_proto
qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_next_proto_select_cb
qt.network.ssl: QSslSocket: cannot resolve SSL_get0_next_proto_negotiated
qt.network.ssl: QSslSocket: cannot resolve SSL_set_alpn_protos
qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_alpn_select_cb
qt.network.ssl: QSslSocket: cannot resolve SSL_get0_alpn_selected
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_get0_next_proto_negotiated
mincore\com\oleaut32\dispatch\ups.cpp(2128)\OLEAUT32.dll!74865072: (caller: 7486FE4F) ReturnHr(1) tid(2e20) 8002801D Bibliothèque non inscrite.
mincore\com\oleaut32\dispatch\ups.cpp(2128)\OLEAUT32.dll!74865072: (caller: 7486FE4F) ReturnHr(2) tid(2e20) 8002801D Bibliothèque non inscrite.
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_get0_next_proto_negotiated
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_get0_next_proto_negotiated
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_get0_next_proto_negotiated
qt.network.ssl: QSslSocket: cannot call unresolved function SSL_get0_next_proto_negotiated

最佳答案

对于 QML 应用程序，您应该在使用 windeploy.exe 时遵循以下命令

windeployqt --qmldir [path-to-app-qml-files] [path-to-app-binary]

关于windows - 在 Windows 上部署 Qt (C++/QML) 应用程序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44762836/