QDeclarativeGeoMap::connect(QPointer<QGeoMap>&, void (QGeoMap::*)(const QString&), QDeclarativeGeoMa

最新推荐文章于 2025-05-01 11:13:57 发布
原创 最新推荐文章于 2025-05-01 11:13:57 发布 · 960 阅读 · 0 ·
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本文记录了在编译Qt的地图组件时遇到的警告及错误信息，主要涉及到QGeoMapPrivate与QDeclarativeGeoMap之间的连接问题。通过分析错误提示，可以发现编译过程中出现了类型不匹配和参数数量不符的问题。
egeomap.o declarativemaps/qdeclarativegeomap.cpp
In file included from ../../include/QtLocation/5.11.1/QtLocation/private/qgeomap_p.h:1:0,
                 from declarativemaps/qdeclarativegeomap_p.h:63,
                 from declarativemaps/qdeclarativegeomap.cpp:37:
../../include/QtLocation/5.11.1/QtLocation/private/../../../../../src/location/maps/qgeomap_p.h:174:18: 警告：‘QGeoMapPrivate’已经是‘QGeoMap’的友元 [默认启用]
     friend class QGeoMapPrivate;
                  ^
declarativemaps/qdeclarativegeomap.cpp: 在成员函数‘void QDeclarativeGeoMap::mappingManagerInitialized()’中:
declarativemaps/qdeclarativegeomap.cpp:699:91: 错误：对‘QDeclarativeGeoMap::connect(QPointer<QGeoMap>&, void (QGeoMap::*)(const QString&), QDeclarativeGeoMap::mappingManagerInitialized()::__lambda9)’的调用没有匹配的函数
                         [&copyrightString](const QString &copy){ copyrightString = copy; });
                                                                                           ^
declarativemaps/qdeclarativegeomap.cpp:699:91: 附注：备选是：
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:208:36: 附注：static QMetaObject::Connection QObject::connect(const QObject*, const char*, const QObject*, const char*, Qt::ConnectionType)
     static QMetaObject::Connection connect(const QObject *sender, const char *signal,
                                    ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:208:36: 附注： 备选需要 5 实参，但提供了 3 个
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:211:36: 附注：static QMetaObject::Connection QObject::connect(const QObject*, const QMetaMethod&, const QObject*, const QMetaMethod&, Qt::ConnectionType)
     static QMetaObject::Connection connect(const QObject *sender, const QMetaMethod &signal,
                                    ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:211:36: 附注： 备选需要 5 实参，但提供了 3 个
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:463:32: 附注：QMetaObject::Connection QObject::connect(const QObject*, const char*, const char*, Qt::ConnectionType) const
 inline QMetaObject::Connection QObject::connect(const QObject *asender, const char *asignal,
                                ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:463:32: 附注：  no known conversion for argument 2 from ‘void (QGeoMap::*)(const QString&)’ to ‘const char*’
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:228:43: 附注：template<class Func1, class Func2> static QMetaObject::Connection QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType)
     static inline QMetaObject::Connection connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal,
                                           ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:228:43: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:699:91: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightString](const QString &copy){ copyrightString = copy; });
                                                                                           ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:260:13: 附注：template<class Func1, class Func2> static typename std::enable_if<((int)(QtPrivate::FunctionPointer<Func2>::ArgumentCount) >= 0), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, Func2)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot)
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:260:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:699:91: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightString](const QString &copy){ copyrightString = copy; });
                                                                                           ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:269:13: 附注：template<class Func1, class Func2> static typename std::enable_if<(((int)(QtPrivate::FunctionPointer<Func2>::ArgumentCount) >= 0) && (! QtPrivate::FunctionPointer<Func2>::IsPointerToMemberFunction)), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const QObject*, Func2, Qt::ConnectionType)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot,
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:269:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:699:91: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightString](const QString &copy){ copyrightString = copy; });
                                                                                           ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:300:13: 附注：template<class Func1, class Func2> static typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == (-1)), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, Func2)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot)
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:300:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:699:91: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightString](const QString &copy){ copyrightString = copy; });
                                                                                           ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:308:13: 附注：template<class Func1, class Func2> static typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == (-1)), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const QObject*, Func2, Qt::ConnectionType)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot,
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:308:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:699:91: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightString](const QString &copy){ copyrightString = copy; });
                                                                                           ^
declarativemaps/qdeclarativegeomap.cpp:703:88: 错误：对‘QDeclarativeGeoMap::connect(QPointer<QGeoMap>&, void (QGeoMap::*)(const QImage&), QDeclarativeGeoMap::mappingManagerInitialized()::__lambda10)’的调用没有匹配的函数
                         [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
                                                                                        ^
declarativemaps/qdeclarativegeomap.cpp:703:88: 附注：备选是：
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:208:36: 附注：static QMetaObject::Connection QObject::connect(const QObject*, const char*, const QObject*, const char*, Qt::ConnectionType)
     static QMetaObject::Connection connect(const QObject *sender, const char *signal,
                                    ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:208:36: 附注： 备选需要 5 实参，但提供了 3 个
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:211:36: 附注：static QMetaObject::Connection QObject::connect(const QObject*, const QMetaMethod&, const QObject*, const QMetaMethod&, Qt::ConnectionType)
     static QMetaObject::Connection connect(const QObject *sender, const QMetaMethod &signal,
                                    ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:211:36: 附注： 备选需要 5 实参，但提供了 3 个
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:463:32: 附注：QMetaObject::Connection QObject::connect(const QObject*, const char*, const char*, Qt::ConnectionType) const
 inline QMetaObject::Connection QObject::connect(const QObject *asender, const char *asignal,
                                ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:463:32: 附注：  no known conversion for argument 2 from ‘void (QGeoMap::*)(const QImage&)’ to ‘const char*’
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:228:43: 附注：template<class Func1, class Func2> static QMetaObject::Connection QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const typename QtPrivate::FunctionPointer<Func2>::Object*, Func2, Qt::ConnectionType)
     static inline QMetaObject::Connection connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal,
                                           ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:228:43: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:703:88: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
                                                                                        ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:260:13: 附注：template<class Func1, class Func2> static typename std::enable_if<((int)(QtPrivate::FunctionPointer<Func2>::ArgumentCount) >= 0), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, Func2)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot)
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:260:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:703:88: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
                                                                                        ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:269:13: 附注：template<class Func1, class Func2> static typename std::enable_if<(((int)(QtPrivate::FunctionPointer<Func2>::ArgumentCount) >= 0) && (! QtPrivate::FunctionPointer<Func2>::IsPointerToMemberFunction)), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const QObject*, Func2, Qt::ConnectionType)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot,
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:269:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:703:88: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
                                                                                        ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:300:13: 附注：template<class Func1, class Func2> static typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == (-1)), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, Func2)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot)
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:300:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:703:88: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
                                                                                        ^
In file included from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qobject.h:1:0,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/animation/qabstractanimation.h:43,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/qabstractanimation.h:1,
                 from /home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/QtCore:5,
                 from ../../include/QtLocation/QtLocationDepends:3:
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:308:13: 附注：template<class Func1, class Func2> static typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == (-1)), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const QObject*, Func2, Qt::ConnectionType)
             connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot,
             ^
/home/aisdk/code/qt/qt-everywhere-src-5.11.1/qtbase/include/QtCore/../../src/corelib/kernel/qobject.h:308:13: 附注：  template argument deduction/substitution failed:
declarativemaps/qdeclarativegeomap.cpp:703:88: 附注：  mismatched types ‘const typename QtPrivate::FunctionPointer<Func>::Object*’ and ‘QPointer<QGeoMap>’
                         [&copyrightImage](const QImage &copy){ copyrightImage = copy; });
                                                                                        ^
declarativemaps/qdeclarativegeomap.cpp:722:70: 错误：对‘QDeclarativeGeoMa
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【QT学习笔记】QT教程：用QT加载瓦片地图的方法
ffffffeiyu的博客
02-26 3756
具体来说，地图服务提供商先将地图按照一定的分辨率切分成标准大小（例如256x256像素）的小图片，然后根据缩放级别（Zoom Level）的不同，逐级生成更精细或更粗糙的瓦片。瓦片地图（Tile Map）是一种在网络环境下，将大范围的地图数据分割成一系列预生成的小尺寸图像文件（称为瓦片或图块），并通过特定的坐标系统和层级结构来组织这些瓦片，以便在客户端（如Web浏览器、手机应用等）按需加载并拼接展示为完整地图的一种技术手段。在Qt中加载瓦片地图可以通过几种方式实现，具体取决于您选择的地图框架和数据源。
qt 使用百度在线地图 方法1
A185822153的专栏
12-10 1760
在使用Qt和百度在线地图时，你需要从百度地图开放平台获取API密钥，并使用该密钥在Qt应用程序中集成百度地图。1，首先，从百度地图开放平台获取API密钥。你需要注册一个百度账号，并创建一个应用来获取API密钥。6，运行Qt应用程序，你将看到一个包含百度在线地图的窗口。你可以通过缩放和平移来查看不同区域的地图。2，在Qt项目中，导入必要的头文件和库文件。
#ifndef __QFTP_CLIENT_H__ #define __QFTP_CLIENT_H__ // make sure to add qftp depending on #include <QTimer> #include <QFile> #include <QUrl> #include <QMap> #include <QVariant> #include <QMutex> #include <QBuffer> #include <QSet> #include "qftp.h" struct RemoteDir; struct SingleCmd; class QFtpClient : public QFtp { Q_OBJECT public: enum QFTP_CMD { QC_NONE, QC_CD, QC_LIST, QC_RENAME, QC_PUT_FILE, QC_PUT_FILES, QC_PUT_TREE, QC_GET_BUFFER, QC_GET_FILE, QC_GET_FILES, QC_GET_TREE, QC_RM_FILE, QC_RM_TREE, QC_MKD, QC_MKDS, }; enum record_type { rt_success, rt_executing, rt_total, rt_count, }; public: QFtpClient(QString serverip = "", QString username = "", QString password = "", qint16 port = 21, QObject* parent = 0); ~QFtpClient(); void setIP(const QString&amp; ip, const qint16 port = 21); void setUser(const QString&amp; username, const QString&amp; password); void close_host(); bool sync_connect(int msec = 3000); // 现存缺陷: 不能创建含中文的目录/文件 // 绝对路径操作接口 // 上传文件/目录 bool put_files(const QList< QPair<QString, QString&gt; >& vfiles, int msec = 30000); //list< pir<localfile, remotefile> > bool put_file(const QString&amp; localabsfile, const QString&amp; remoteabsfile, int msec = 3000); bool put_tree(const QString&amp; localabspath, const QString&amp; remoteabspath, const QStringList& exceptabspath = {}, int msec = 30000); // 下载文件/目录 bool get_buffer(const QString&amp; remoteabsfile, int msec = 3000); bool get_file(const QString&amp; remoteabsfile, const QString&amp; localabsfile, int msec = 3000); bool get_files(const QList< QPair<QString, QString&gt; >& vfiles, int msec = 30000); //list< pir<remotefile, localfile> > bool get_tree(const QString&amp; remoteabspath, const QString&amp; localabspath, const QStringList& exceptabspath = {}, int msec = 30000); // 删除文件/目录 bool rm_file(const QString&amp; remotefile, int msec = 3000); bool rm_tree(const QString&amp; dir, int msec = 30000); // 新建目录 bool mk_dir(const QString&amp; dir, int msec = 3000); bool mk_dir(const QStringList& dirlist, int msec = 3000); // 重命名 bool _rename(const QString&amp; remotefilepath, const QString&amp; newname, int msec = 3000); // 显示列表 bool _list(const QString&amp; remotepath, int msec = 3000); // 当前目录操作接口 bool pwd_put_file(const QString&amp; localabsfile, int msec = 3000); bool pwd_get_file(const QString&amp; remotefile, const QUrl& localurl, int msec = 3000); bool pwd_rm_file(const QString&amp; remotefile, int msec = 3000); bool pwd_rm_tree(const QString&amp; remotedir, int msec = 10000); bool pwd_mk_dir(const QString&amp; remotedir, int msec = 3000); bool pwd_rename(const QString&amp; remotefile, const QString&amp; newname, int msec = 3000); bool pwd_list(int msec = 3000); bool pwd_cd(const QString&amp; dirname, bool done_list = false, int msec = 3000); // 是否被占用 bool is_busy()const; // 是否已连接 bool is_connect()const; QString pwd(); signals: void signal_state_changed(int); void signal_command_finish(int cmdid, QVariantList params, QString errorstring = ""); void signal_ftp_log(const QString&amp;, bool error = false); void signal_list(const QList<QUrlInfo>&); void signal_get_buffer(const QByteArray&); void signal_done(int cmdid, int ok_num, int exec_num, int total_num); private: bool inner_put_file(const QString&amp; localabsfile, const QString&amp; remoteabsfile, int msec = 3000); bool inner_put_files(QVariantList& files, int msec = 30000); bool inner_put_tree(const QString&amp; localabspath, const QString&amp; remoteabspath, const QStringList& vExcept = {}, int msec = 30000); bool inner_get_buffer(const QString&amp; remoteabsfile, int msec = 3000); bool inner_get_file(const QString&amp; remoteabsfile, const QString&amp; localabsfile, int msec = 3000); bool inner_get_files(QVariantList& files, int msec = 30000); bool inner_get_tree(const QString&amp; remoteabspath, const QString&amp; localabspath, const QStringList& vExcept = {}, int msec = 30000); bool inner_rm_file(const QString&amp; remotefile, int msec = 3000); bool inner_rm_tree(const QString&amp; dir, int msec = 30000); bool inner_mk_dir(const QString&amp; dir, int msec = 3000); bool inner_mk_dir(const QStringList& dirlist, int msec = 3000); bool inner_rename(const QString&amp; remotefilepath, const QString&amp; newname, int msec = 3000); bool inner_list(const QString&amp; remotepath = "", int msec = 3000); bool inner_cd(const QString&amp; dirname, bool done_list = false, int msec = 3000); // done_list - 切换完成后, 是否需要list(用于ui显示) void connect_host(); void connect_result(QString errstr); void login_result(QString errstr); void close_result(QString errstr); void list_result(const SingleCmd& smd); void get_result(const SingleCmd& smd, QString errstr); bool has_cmd(); bool next_cmd(); bool next_cmd_util_done(int msec); void cd_result(const SingleCmd& smd, QString errstr); void put_result(const SingleCmd& smd, QString errstr); void mkd_result(const SingleCmd& smd, QString errstr); void rmd_result(const SingleCmd& smd, QString errstr); void rm_result(const SingleCmd& smd, QString errstr); void rename_result(const SingleCmd& smd, QString errstr); void build_pwd_cd_cmd(const QString&amp; dirname, bool done_list = false); // 当前目录cd void build_cd_cmd(const QString&amp; remotepath); // 绝对路径cd void build_cd_cmd(const QString&amp; remotepath, QList<SingleCmd>& l); void build_mkdir_cmd(const QString&amp; remotepath); void build_rmdir_cmd(const QString&amp; remotepath); void build_rm_cmd(const QString&amp; remotepath); void build_put_cmd(const QString&amp; localfile, const QString&amp; remotefile); void build_puts_cmd(const QVariantList&); void build_putree_cmd(const QString&amp; localpath, const QString&amp; remotepath, const QStringList& vExcept = {}); void build_get_buffer_cmd(const QString&amp; remotefile); void build_get_cmd(const QString&amp; remotefile, const QString&amp; localfile); void build_gets_cmd(const QVariantList&); void build_getree_cmd(const QString&amp; remotepath, const QString&amp; localpath, const QStringList& vExcept = {}); void build_rename_cmd(const QString&amp; remotefilepath, const QString&amp; newname); void build_list_cmd(const QString&amp; remotepath); void clear_cmd(); void reset_record(); void inc_record(record_type, int = 1); private slots: void slot_state_changed(int); void slot_timer_connect(); void slot_finish(int, bool); void slot_listinfo(const QUrlInfo&); void slot_inner_cmd(int cmdid, QVariantList params, QString errorstring); protected: QUrl m_url; QTimer* m_pConnect = Q_NULLPTR; QPair<QString, QString&gt; m_CurrentPath; // local/remote path // download member QList< QPair<QString, QString&gt; > m_PendingPath; // local/remote path QBuffer* m_buffer = 0; // rmdir member QList<SingleCmd> m_rmlist; // cmd member QList<SingleCmd> m_lCmd; QMap<int, SingleCmd> m_mapCmd; // list member QFtp::Command m_listcmd = QFtp::Command::None; QFtp::Command m_prevlistcmd = QFtp::Command::None; QList<QUrlInfo> m_listresult; QStringList m_PathSection = {}; QFTP_CMD m_cmd = QC_NONE; int success_count = 0, execute_count = 0, total_count = 0; QSet<QString&gt; m_vExcept; }; #endif 这是QFtpclient.h
最新发布
07-11
void uploadCsvFile(const QString&amp; csvFile, const QString&amp; ftpHost, const QString&amp; ftpUser, const QString&amp; ftpPass, const QString&amp; ftpPath, int ftpPort) { QFtpClient ftpClient(ftpHost, ftpUser, ...
x::*)(const QString &)>(&QSpinBox::valueChanged)12345具体书写方式
10-31
QObject::connect静态_cast<QSpinBox*>(yourSpinBox), &QSpinBox::valueChanged, someCallback, 12345); ``` 在这里，`someCallback`是一个接收`void`返回值并且没有参数的函数，`12345`则是用于连接操作的额外数据...
E:\al\studentManager\mainwindow.cpp:30: error: no matching function for call to 'MainWindow::connect(LoginDialog&, void (LoginDialog::*)(const QString&amp;), MainWindow*, void (MainWindow::*)(const QString&amp;))' connect(loginDialog, &LoginDialog::sendData, this, &MainWindow::receiveData); ^
06-03
这里的 `sendData` 是 `LoginDialog` 类的一个信号，它的参数类型是 `const QString&amp;`，而 `receiveData` 是 `MainWindow` 类的一个槽函数，它的参数类型也是 `const QString&amp;`。因此，这两个参数类型应该是匹配的。...
class A:public QWidget { signals: void deviceSate(QMap<QString,bool> map); }; class B:public QWidget { public: void func(); void setDeviceState(QMap<QString,bool> map); }; void B::func() { connect(secWidget,&sec_Widget::deviceSate,this,setDeviceState); } void Widget::setDeviceState(QMap<QString,bool> map) { } 程序崩溃
06-09
void deviceSate(QMap<QString,bool> map); }; ``` 3. 是否在信号和槽函数的参数中使用了 const 引用？ 如果在信号和槽函数的参数中使用了 const 引用，可能会导致程序崩溃。请确保在信号和槽函数的参数中不要...
QT地图QtLocation
luck_anan的博客
12-26 9796
相信大家在使用QT开发中难免会需要用到Qt地图开发，目前主流是使用QWebEngineView调用浏览器，使用浏览器加载第三方api，如openlayers 和谷歌地图API等。但是这种优点是api支持度高非常简单，容易上手。但是缺点是没法缓冲地图资源，必须依赖地图服务器。还有一种小众的解决方法是使用Qt自带的QtLocation（如果你的程序不准备使用qml为主的话，你基本就不需要往下看了），这篇文章就是介绍QtLocation的使用方法的。
在Mac上编译arm版Qt
weixin_52435933的博客
03-19 844
♿︎ 引言自从电脑换成Mac后就需要面对芯片架构不同带来的众多问题，市场上还是有很多软件只适配x86而不支持arm。当然这段时间我体验下来，arm架构采用的是精简指令集，在续航方面全面吊打x86，一般来说不插电工作一天绰绰有余。当然缺点也很明显，就是软件市场依然不是很友好，比如说VS(坦白地说，VS for mac就是微软做出来嘲笑苹果的)。虽然很多软件表示已经在开发arm版，但...
QGC地图框架（第二集）
TuringEvo专栏
08-23 2221
联系作者QQ 843230304 地图映射管理器引擎 对应在第一集中，第２个函数　实现基本地图功能，下面我们一步步分析ＱＧＣ是如何实现的 QGeoTiledMappingManagerEngineQGC 1 构造函数　( 注册地图插件名称为 QGroundControl 、配置缓存、瓦片大小、限制地图缩放级别、配置瓦片网络请求): /*! * \brief 注册地图插件名称为 ...
Qt轻量级地图解决方案：基于QtLocation的二次开发（二）
chunzhuojiang6003的博客
12-17 2464
写在前面 本系列的上一篇带大家初识了一下QtLocation这个模块。如果只是需要显示/浏览地图和一些简单的交互，那么QtLocation提供的QML类型已经足够满足需求了。先来看看QtLocation提供了哪些QML类型（罗列的Qt5.6版的类型，Qt现在更新得很快，已经Qt12了；Qt...
信号槽
liuyanfeier的专栏
10-06 331
信号槽在 Qt 5 中，QObject::connect()有五个重载：QMetaObject::Connection connect(const QObject *, const char *, const QObject *, const char *,
QGC地图二次开发加载过程中的问题
ch_jm0723的博客
03-10 2532
由于公司项目需要，使用了QGC中的地图部分代码，该部分是一个以sqlite为核心的瓦片存储和管理的库，其中对瓦片有三层缓存机制，分别是磁盘缓存，数据库缓存和内存缓存。现将使用过程中遇到的问题记录如下： 项目中需要使用多个地图，针对多个项目展示不同的地图，而qgc本身的机制其实只维护了一个地图。 解决方案：在创建qgc地图的接口中创建多个地图，针对每个地图创建新的缓存管理...
Qt Declarative Module之QDeclarativeEngine
Open Source Project Share的专栏
09-24 1658
int qmlRegisterInterface ( const char * typeName ) This template function registers the C++ type in the QML system under the name typeName.
qt报错 F:\qt_projects\QtScrcpy\videoform.cpp:143: error: no matching function for call to 'VideoForm::connect(QList<Decoder*>&, void (Decoder::*)(devicessocket*), VideoForm*, VideoForm::VideoForm(const QString&amp;, QWidget*)::<lambda(devicessocket*)>)' }); ^
05-17
connect(decoders, &QList<Decoder*>::finished, this, [this](devicessocket *socket) { if (socket == current_socket) { ui->video->update(); } }); for (auto decoder : *decoders) { connect(decoder, &...
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