改变形状的对话框

来源：互联网发布：在淘宝上卖油画好卖吗编辑：程序博客网时间：2024/04/29 00:49

Qt： QPushButton的checkable属性

选中checkable后，Button变成切换按钮(toggle button)，可以有两种状态：按下/弹起

默认状况下checkable是不选中的，Button默认为触发按钮(trigger button)，按下去马上弹起来

群组框：group box
组合框:combobox

点击ctrl再点击窗体移动就可以进行复制操作

toggle(bool)开关信号比click()信号多传递一个参数！

设计的窗体结构图为：

在组合框内选择栅格布局，整个布局选择栅格布局

dialog.h

#ifndef DIALOG_H#define DIALOG_H#include <QDialog>namespace Ui {class Dialog;}class Dialog : public QDialog{    Q_OBJECT    public:    explicit Dialog(QWidget *parent = 0);    ~Dialog();    void setColumnRange(QChar first,QChar last);private slots:    void setText(bool &b);    private:    Ui::Dialog *ui;};#endif // DIALOG_H

dialog.cpp

#include "dialog.h"#include "ui_dialog.h"Dialog::Dialog(QWidget *parent) :    QDialog(parent),    ui(new Ui::Dialog){    ui->setupUi(this);    connect(ui->moreButton,SIGNAL(toggled(bool)),this,SLOT(setText(bool)));    ui->secondaryGoupBox->hide();    ui->tertiaryGoupBox->hide();    //对窗体大小进行限制    //不能因为隐藏窗体而修改窗体的大小 确保对话框显示最佳尺寸    layout()->setSizeConstraint(QLayout::SetFixedSize);    setColumnRange('A','Z');}void Dialog::setText(bool &b){    if(b == TRUE)    {        this->ui->moreButton->setText(tr("Advanced >>"));    }    else    {        this->ui->moreButton->setText(tr("Advanced <<"));    }}void Dialog::setColumnRange(QChar first,QChar last){    ui->primaryColumnCombo->clear();    ui->secondaryColumnCombo->clear();    ui->tertiaryColumnCombo->clear();    ui->secondaryColumnCombo->addItem(tr("None"));    ui->tertiaryColumnCombo->addItem(tr("None"));    ui->primaryColumnCombo->setMinimumSize(ui->secondaryColumnCombo->sizeHint());    QChar ch = first;    while(ch <= last)    {        ui->primaryColumnCombo->addItem(QString(ch));        ui->secondaryColumnCombo->addItem(QString(ch));        ui->tertiaryColumnCombo->addItem(QString(ch));        ch = ch.unicode() + 1;    }}Dialog::~Dialog(){    delete ui;}

main.cpp

#include "mainwindow.h"#include <QApplication>#include "ui/dialog.h"int main(int argc, char *argv[]){    QApplication a(argc, argv);    Dialog w;    w.show();    return a.exec();}

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