1 内置对话框
标准对话框样式
内置对话框基类
QColorDialog,
QErrorMessage
QFileDialog
QFontDialog
QInputDialog
QMessageBox
QProgressDialog
QDialog Class帮助文档
示例：各按钮激发对话框实现基类提供的各效果
第一步：实现组件布局（）
第二步：实现信号与槽函数
文件静态成员方法
打印实现使用qdebug
代码：
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QPushButton>
#include <QTextEdit>
#include<QColorDialog>
#include<QErrorMessage>
#include<QFileDialog>
#include<QFontDialog>
#include<QInputDialog>
#include<QMessageBox>
#include<QProgressDialog>
#include <QDebug>
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = 0);
~Widget();
public slots:
void setcolorf()
{
QColor c = QColorDialog::getColor();
te->setTextColor(c);
}
void showerr()
{
QErrorMessage *msg = QErrorMessage::qtHandler();
msg->showMessage("EEEEEEEE");
}
void getfile()
{
QString filename = QFileDialog::getOpenFileName();
qDebug()<<filename; //qt中打印方法
te->setText(filename);
}
void setfont()
{
bool ok;
QFont myfont = QFontDialog::getFont(&ok);
if(ok)
te->setFont(myfont);
}
void getstr()
{
QString str = QInputDialog::getText(this, "xxxx","yyyyy");
te->setText(str);
}
void showmsg()
{
QMessageBox::information(this, "vvvv", "hello", "AAA");
}
void showprogress()
{
QProgressDialog p;
p.setValue(50);
p.exec();
}
private:
QPushButton *btcolor;
QPushButton *bterrm;
QPushButton *btfile;
QPushButton *btfont;
QPushButton *btinput;
QPushButton *btmsg;
QPushButton *btprg;
QTextEdit *te;
};
#endif // WIDGET_H
#include "widget.h"
#include "QVBoxLayout"
#include "QHBoxLayout"
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
btcolor = new QPushButton("setcolor");
bterrm = new QPushButton("errmsg");
btfile = new QPushButton("getfile");
btfont = new QPushButton("setfont");
btinput = new QPushButton("getstr");
btmsg = new QPushButton("msg");
btprg = new QPushButton("progress");
te = new QTextEdit;
QVBoxLayout *vbox = new QVBoxLayout;
vbox->addWidget(btcolor);
vbox->addWidget(bterrm);
vbox->addWidget(btfile);
vbox->addWidget(btfont);
vbox->addWidget(btinput);
vbox->addWidget(btmsg);
vbox->addWidget(btprg);
QHBoxLayout *mainbox = new QHBoxLayout;
mainbox->addLayout(vbox);
mainbox->addWidget(te);
this->setLayout(mainbox);
connect(btcolor, SIGNAL(clicked(bool)), this, SLOT(setcolorf()));
connect(bterrm, SIGNAL(clicked(bool)), this, SLOT(showerr()));
connect(btfile, SIGNAL(clicked(bool)), this, SLOT(getfile()));
connect(btfont, SIGNAL(clicked(bool)), this, SLOT(setfont()));
connect(btinput, SIGNAL(clicked(bool)), this, SLOT(getstr()));
connect(btmsg, SIGNAL(clicked(bool)), this, SLOT(showmsg()));
connect(btprg, SIGNAL(clicked(bool)), this, SLOT(showprogress()));
}
Widget::~Widget()
{
}
2 自定义对话框
现象：模态显示，前面不关后面不关，小框可以卡其后面的态
有时候对于弹出对话框可以点确定关闭，可以点X全部关闭，那么这时候需要实现自定义对话框
添加新文件，添加C++
文件添加 姓名，基类
生成myQdialog的cpp和.h文件，需要用到信号与槽，Q_OBJEC
myqdialog.h
#ifndef MYQDIALOG_H
#define MYQDIALOG_H
#include <QDialog>
#include <QLineEdit>
#include <QPushButton>
class myQDialog : public QDialog
{
Q_OBJECT
public:
myQDialog();
public slots:
void ok_pushed()
{
stat = true;
close();
}
public:
static int getstat()
{
myQDialog a;
a.exec();
return a.stat;
}
private:
QLineEdit *le;
QPushButton *pb;
int stat;
};
#endif // MYQDIALOG_H
myqdialog.cpp
#include "myqdialog.h"
#include <QVBoxLayout>
myQDialog::myQDialog()
{
le = new QLineEdit("aaaaaa");
pb = new QPushButton("OK");
QVBoxLayout *vbox = new QVBoxLayout;
vbox->addWidget(le);
vbox->addWidget(pb);
setLayout(vbox);
stat = false;
connect(pb, SIGNAL(clicked(bool)), this, SLOT(ok_pushed()));
}
widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = 0);
~Widget();
};
#endif // WIDGET_H
widget.cpp
#include "widget.h"
#include <QWidget>
#include <QDialog>
#include "myqdialog.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
#if 0
myQDialog a;
a.setFixedSize(100, 100);
a.exec();
if(!a.stat)
exit(0);
#endif
int s = myQDialog::getstat();
if(!s)
exit(0);
}
Widget::~Widget()
{
}
