一.第一阶段

运行结果(GIF动图)：

day12.pro

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++11# The following define makes your compiler emit warnings if you use
# any Qt feature that has 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 it uses 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 6.0.0SOURCES += \main.cpp \widget.cppHEADERS += \widget.h# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>class Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();
};
#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include<QPushButton>
#include<QDialog>
Widget::Widget(QWidget *parent): QWidget(parent)
{this->resize(640,480);QPushButton* pb=new QPushButton("Dailog",this);pb->show();QDialog* dialog= new QDialog;connect(pb,SIGNAL(clicked()),dialog,SLOT(exec()));
}Widget::~Widget()
{}

main.cpp

#include "widget.h"#include<QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);Widget w;w.show();return a.exec();
}

二.第二阶段

运行结果(GIF动图)：

day12.pro

QT       += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++11# The following define makes your compiler emit warnings if you use
# any Qt feature that has 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 it uses 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 6.0.0SOURCES += \main.cpp \widget.cppHEADERS += \widget.h# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>class Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();
private:void initDialog();
public slots:void showDialog();
private:QDialog* _dialog;
};
#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include<QDialog>
#include<QDebug>
#include<QGridLayout>
#include<QHBoxLayout>
#include<QPushButton>
#include<QLabel>
#include<QLineEdit>
Widget::Widget(QWidget *parent): QWidget(parent)
{this->resize(640,480);QPushButton* pb=new QPushButton("Dailog",this);pb->show();_dialog= new QDialog;connect(pb,SIGNAL(clicked()),this,SLOT(showDialog()));initDialog();
}
void Widget::initDialog()
{QGridLayout* grid=new QGridLayout(_dialog);QHBoxLayout* hBox=new QHBoxLayout;QPushButton* ok=new QPushButton("确认");QPushButton* cancel= new QPushButton("取消");QLabel* userLabel=new QLabel("用户:");QLineEdit* userEdit=new QLineEdit;QLabel* passWdLabel = new QLabel("密码:");QLineEdit* passwdEdit = new QLineEdit;grid->addWidget(userLabel,0,0,1,1);grid->addWidget(userEdit,0,1,1,2);grid->addWidget(passWdLabel,1,0,1,2);grid->addWidget(passwdEdit,1,1,1,2);grid->addLayout(hBox,2,0,1,3);hBox->addSpacing(80);hBox->addWidget(ok);hBox->addWidget(cancel);passwdEdit->setEchoMode(QLineEdit::Password);connect(cancel,SIGNAL(clicked()),_dialog,SLOT(reject()));//取消按钮connect(ok,SIGNAL(clicked()),_dialog,SLOT(accept()));//确认按钮
}void Widget::showDialog()
{int ret=_dialog->exec();qDebug()<<ret<<endl;
}Widget::~Widget()
{}

main.cpp

#include "widget.h"#include<QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);Widget w;w.show();return a.exec();
}

三.附：概念

2 触发一个模式对话框

QT每日一练day12：QDailog相关推荐

QT每日一练day4：ubuntu中使用QT
(本文主要是为了说明QT的跨平台特性) 一.安装QT sudo apt-get install qt5-default qtcreator cmake 二.打开QT 可以点击图标或命令行方式: 三 ...
QT每日一练day1：第一个程序
参考博文:Qt常见类.窗口类继承关系树图 QT每日一练(1):第一个程序最终效果(GIF动图): step1: step2: step3: step4: step5: step6: step7: s ...
QT每日一练day29：QT中的多线程探究
一.未使用多线程,则w0先运行完后,w1才开始运行运行结果(GIF动图): main.cpp xiaowen_QT_day29.pro QT+=widgets SOURCES += \main.cp ...
QT每日一练day27：绘制不规则窗体
注:本文本来应该是以一个不规则的图片作为历程的,,忘记了!!!! 一.第一阶段:隐藏窗体框架运行结果(GIF动图): widget.cpp 二.第二阶段:将窗口设置为透明运行结果(GIF动 ...
QT每日一练day26：绘制图片
一.第一阶段发现上述图片没有显示全!!!!! 二.第二阶段设置宽高比,平滑转换运行结果(GIF动图): 发现上述图片在数次缩放后会产生失真!!!!! 三.第三阶段为了避免图像缩放过程中产生失真 ...
QT每日一练day25：触发绘画事件
运行结果(GIF动图): widget.cpp 附代码: xiaowen_QT_day25.pro QT += core guigreaterThan(QT_MAJOR_VERSION, 4): QT ...
QT每日一练day24：绘画事件
一.第一阶段设置线条粗细二.第二阶段:设置笔的样式如:虚线三.第三阶段:绘制矩形四.第四阶段:设置颜色轮廓颜色笔刷颜色笔刷样式五.第五阶段:绘制其他形状图像和文字六.第六阶段:图像 ...
QT每日一练day23：鼠标进入与离开事件
运行结果(GIF动图): xiaowen_QT_day23.pro QT += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFI ...
QT每日一练day22：键盘事件
一.第一阶段--键盘按键按下事件运行结果(GIF动图): xiaowen_QT_day22.pro QT += core guigreaterThan(QT_MAJOR_VERSION, 4): Q ...

QT每日一练day12：QDailog

一.第一阶段

二.第二阶段

三.附：概念

2 触发一个模式对话框

QT每日一练day12：QDailog相关推荐

最新文章

热门文章