1
pr\下载QT
https://download.qt.io/archive/qt/5.9/5.9.0/
下载qt-opensource-windows-x86-5.9.0.exe
2.QT组件选择
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?3.安装完之后,打开QT creator
QT Creator 4.15.0 只是 IDE的版本
QT5.15.2 为QT库的版本
?c
?插件的版本
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?安装完后的环境是否OK? .使用MinGW 是一个windows编译器,能编译出windows10运行的exe
?默认使用qmake 编译
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调试器GDB
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设置UTF8?
工具->选项 ->文本编辑器，找到 行为 的选项?
缩进 仅空格.缩进4个空格
显示行号
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?小例子
程序的入口会传入 QCoreApplication? ?.a.exec()会进入死循环.直到 exit();
#include <QCoreApplication>
#include <Qdebug>
#include <stdio.h>
#include <iostream>
int main(int argc, char *argv[])
{
qDebug()<<"QT hello world"<<endl;
printf("C hello world\n");
std::cout<<"C++ hello world"<<std::endl;
QCoreApplication a(argc, argv);
return a.exec();
}
QT += core
QT -= gui
CONFIG += c++11
TARGET = second
#CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
SOURCES += main.cpp
# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
CONFIG +=console? 程序的打印会通过windows的 cmd 控制台输出.取消会通过QT 的程序输出栏输出.? ??程序默认使用C++11
程序的编译
1.构建-->重新构建项目
2.开始调试->start and debug?