QT 定义全局变量、通过函数初始化变量

1.头文件中 定义全局变量

#ifndef Z3_GVARS_H
#define Z3_GVARS_H

#include <QString>

class Z3_GVARS {

public :
static QString JSON_FILE_NAME ;
static QString SERVER_IP ;
static int SERVER_PORT;
static void initConfig();
};

#endif // ! Z3_GVARS_H

2.在cpp中初始化全局变量，定义函数：

#include "Z3_GVARS.h"
#include <QString>

QString Z3_GVARS::JSON_FILE_NAME = "C:\\temp\\request.json";
QString Z3_GVARS::SERVER_IP = "127.0.0.1";
int Z3_GVARS::SERVER_PORT = 9998;

void Z3_GVARS::initConfig() {
Z3_GVARS::JSON_FILE_NAME = "C:\\temp\\request.json";
Z3_GVARS::SERVER_IP = "127.0.0.1";
Z3_GVARS::SERVER_PORT = 9999;
};

3.在dll加载入口，运行初始化函数，初始化变量

#include "Z3_GVARS.h"
class Z3_GVARS;

int ZW3DTCInit() {
//初始化静态
Z3_GVARS::initConfig();

。。。。

}