Qt开发，使用Qt for Python还是Qt C++?
背景
最近公司需要用海康摄像头搞事情，之前用WPF、VS2022/c++做过一版，现在想要QT来折腾一下。
环境：QT6.5.2LTS+CMAKE+WIN10+MSVC/MINGW
参阅了一堆资料后发现，用QT+CMake的资料很少，零星有几个也是藏着捂着的，自己琢磨了一天给搞出来了，遂向大家汇报一下。
先说明一下，本人QT和CMake都很菜，欢迎大佬莅临指正打脸！
文件结构
代码
CMAKE
cmake_minimum_required(VERSION 3.5)
project(HivisionControl VERSION 0.1 LANGUAGES CXX)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
set(PROJECT_SOURCES
main.cpp
mainwindow.cpp
mainwindow.h
mainwindow.ui
)
set(SDK_DIR "${PROJECT_SOURCE_DIR}/Include")
set(LIB_DIR "C:\\QTProjects\\HivisionControl\\Lib")
include_directories(${SDK_DIR})
link_directories(${LIB_DIR})
add_library(HCNetSDKLib STATIC IMPORTED)
set_target_properties(HCNetSDKLib PROPERTIES IMPORTED_LOCATION "${LIB_DIR}/HCNetSDK.lib")
add_library(HCCoreLib STATIC IMPORTED)
set_target_properties(HCCoreLib PROPERTIES IMPORTED_LOCATION "${LIB_DIR}/HCCore.lib")
add_library(HCPreviewLib STATIC IMPORTED)
set_target_properties(HCPreviewLib PROPERTIES IMPORTED_LOCATION "${LIB_DIR}/HCPreview.lib")
add_library(PlayCtrlLib STATIC IMPORTED)
set_target_properties(PlayCtrlLib PROPERTIES IMPORTED_LOCATION "${LIB_DIR}/PlayCtrl.lib")
add_library(HCGeneralCfgMgrLib STATIC IMPORTED)
set_target_properties(HCGeneralCfgMgrLib PROPERTIES IMPORTED_LOCATION "${LIB_DIR}/HCGeneralCfgMgr.lib")
add_library(HCAlarmLib STATIC IMPORTED)
set_target_properties(HCAlarmLib PROPERTIES IMPORTED_LOCATION "${LIB_DIR}/HCAlarm.lib")
if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
qt_add_executable(HivisionControl
WIN32 MANUAL_FINALIZATION
${PROJECT_SOURCES}
)
#add_executable(HivisionControl WIN32 ${PROJECT_SOURCES})
# Define target properties for Android with Qt 6 as:
# set_property(TARGET HivisionControl APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
# ${CMAKE_CURRENT_SOURCE_DIR}/android)
# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
else()
if(ANDROID)
add_library(HivisionControl SHARED
${PROJECT_SOURCES}
)
# Define properties for Android with Qt 5 after find_package() calls as:
# set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
else()
add_executable(HivisionControl
${PROJECT_SOURCES}
)
endif()
endif()
target_link_libraries(HivisionControl PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)
target_include_directories(HivisionControl PRIVATE ${SDK_DIR})
target_link_libraries(HivisionControl PRIVATE HCNetSDKLib
HCCoreLib
HCPreviewLib
PlayCtrlLib
HCGeneralCfgMgrLib
HCAlarmLib)
# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
if(${QT_VERSION} VERSION_LESS 6.1.0)
set(BUNDLE_ID_OPTION MACOSX_BUNDLE_GUI_IDENTIFIER com.example.HivisionControl)
endif()
set_target_properties(HivisionControl PROPERTIES
${BUNDLE_ID_OPTION}
MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
MACOSX_BUNDLE TRUE
WIN32_EXECUTABLE TRUE
)
include(GNUInstallDirs)
install(TARGETS HivisionControl
BUNDLE DESTINATION .
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)
if(QT_VERSION_MAJOR EQUAL 6)
qt_finalize_executable(HivisionControl)
endif()
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
QT_BEGIN_NAMESPACE
namespace Ui
{
class MainWindow;
}
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private:
Ui::MainWindow *ui;
long m_lPlayHandle = 0;
private slots:
int LoginBtn_Cliked();
};
#endif // MAINWINDOW_H
mainwindow.cpp
#include "mainwindow.h"
#include "./ui_mainwindow.h"
#include "HCNetSDK.h"
#include <windows.h>
#include <qdebug.h>
#include <QGraphicsView>
#include <QWidget>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
connect(ui->loginBtn, &QPushButton::clicked, this,
&MainWindow::LoginBtn_Cliked);
}
MainWindow::~MainWindow()
{
delete ui;
}
int MainWindow::LoginBtn_Cliked()
{
qDebug() << "begin login";
bool isInit = NET_DVR_Init();
if (isInit)
{
qDebug() << "SDK Initialized!";
NET_DVR_SetConnectTime(2000, 3);
NET_DVR_SetReconnect(10000, true);
NET_DVR_USER_LOGIN_INFO struLoginInfo = {0};
strcpy_s(struLoginInfo.sDeviceAddress, "43");
strcpy_s(struLoginInfo.sUserName, "admin");
strcpy_s(struLoginInfo.sPassword, "43");
struLoginInfo.wPort = 8000;
NET_DVR_DEVICEINFO_V40 struDeviceInfo = {0};
int lUserID = NET_DVR_Login_V40(&struLoginInfo, &struDeviceInfo);
if (lUserID < 0)
{
qDebug() << "login error: " << NET_DVR_GetLastError();
NET_DVR_Cleanup();
return -1;
}
else
{
qDebug() << "login success";
HWND hWND = (HWND)ui->graphicsView->winId();
NET_DVR_PREVIEWINFO structPlayInfo;
structPlayInfo.hPlayWnd = hWND;
structPlayInfo.lChannel = 1;
structPlayInfo.dwStreamType = 0;
structPlayInfo.dwLinkMode = 0;
structPlayInfo.bBlocked = 1;
m_lPlayHandle =
NET_DVR_RealPlay_V40(lUserID, &structPlayInfo, nullptr, nullptr);
if (m_lPlayHandle < 0)
{
qDebug() << "preview error: " << NET_DVR_GetLastError();
NET_DVR_Logout(lUserID);
NET_DVR_Cleanup();
return -1;
}
}
}
else
{
qDebug() << "SDK init failed: " << NET_DVR_GetLastError();
}
ui->loginBtn->setText("Logout");
return 1;
}
界面
最后
现在展示的是预览功能，其他还有很多功能，看官方文件就知道了，SDK在官网下载。