QT QT 】 【 to have developed a good program for packaging into a dynamic library

前两篇博客：

1、不带uiThe generation and invocation of the dynamic library of the interface
2、带uiThe generation and invocation of the dynamic library of the interface

If it is has developed a good project or a project,Want to encapsulate as a dynamic library,How to be faster and more convenient：

例如：QT项目工程

How to the project engineering fast packaging into dynamic library？

1、修改配置文件

#TEMPLATE = app

TEMPLATE = lib

DEFINES += RECDATA_LIBRARY

2、新建一个头文件recdata_global.h,并添加如下代码

#include <QtCore/qglobal.h>

#if defined(RECDATA_LIBRARY)
# define RECDATASHARED_EXPORT Q_DECL_EXPORT
#else
# define RECDATASHARED_EXPORT Q_DECL_IMPORT
#endif

3、引入头文件,Modify the derived class definition

#include "recdata_global.h"

class RECDATASHARED_EXPORT RecData : public QWidget

#include "recdata_global.h"

class RECDATASHARED_EXPORT showData : public QWidget

4、重新构建、运行

5、若是 MinGW32 编译器,After compiling, it will be found in the folder ***.dll 和 ***.a 文件;若是 MSVC 编译器,则应该是 ***.dll和 ***.lib .

6、调用
in programs that use the library,新建一个 include 文件夹 和 一个lib 文件夹,将 导出类的头文件 复制进include文件夹中,将编译生成的***.lib文件复制到lib文件夹中,Then import the header file into the program.

INCLUDEPATH += $$PWD/include
LIBS += -L$$PWD/lib -lRecData

在编译之后,Compile in different modesdllThe file is placed in the folder where the program is compiled,to run the program normally.