Question

我是Qt的新手，我正在尝试构建一个简单的文本编辑器。我想要一个搜索功能，目前它只是我文本编辑器主窗口顶部的静态工具栏。我想要的是一种弹出式工具栏，就像在Chrome或Firefox中一样，只要我选择＆＃34; Find＆＃34;从菜单中按或按Ctrl + F，工具栏出现，一旦我按下它，它就会消失。

我也有一些焦点问题atm，如果我按下Ctrl + F，我的QLineEdit上没有闪烁的光标，我不知道为什么。

欢迎任何提示！提前谢谢！

我的mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QFileDialog>
#include <QShortcut>
#include <QFile>
#include <QDebug>
#include"searchdialog.h"
#include <QToolBar>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();


public slots:
    void open_search_window();

private:
    Ui::MainWindow *ui;
    QString m_filename;
    SearchDialog *m_dialog;
    QToolBar *m_toolbar;

};

#endif // MAINWINDOW_H

然后，mainwindow.cpp

#include "mainwindow.h"
#include "searchdialog.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget* parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{

    ui->setupUi(this);

    m_dialog = new SearchDialog();
    m_dialog->show();

    m_toolbar = new QToolBar(this);
    m_toolbar->addWidget(m_dialog);

    this->addToolBar(m_toolbar);

    connect(ui->actionquit, SIGNAL(triggered()), this, SLOT(close()));
    connect(ui->actionFind, SIGNAL(triggered()), this, SLOT(open_search_window()));

    new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_F), this, SLOT(open_search_window()));
}

MainWindow::~MainWindow()
{
    delete ui;
    delete m_dialog;
}



void MainWindow::open_search_window()
{
    m_dialog->show();

}

我自己定义的Searchdialog类：

#ifndef SEARCHDIALOG_H
#define SEARCHDIALOG_H
#include <QHBoxLayout>
#include <QLabel>
#include <QLineEdit>
#include <QPushButton>
#include <QVBoxLayout>
#include <QWidget>
#include <QShortcut>

class SearchDialog : public QWidget {
    Q_OBJECT
public:
    explicit SearchDialog(QWidget* parent = 0);
    QLabel* m_label;

public slots:
    void find_next();

signals:
    void new_search(QString search_string);

private:
    QLineEdit* m_searchInput; 
    QPushButton* m_cancel;
    QPushButton* m_findNext;
};

#endif // SEARCHDIALOG_H

searchdialog.cpp

#include "searchdialog.h"

SearchDialog::SearchDialog(QWidget* parent)
    : QWidget(parent)

{
    this->setWindowTitle("Find stuff...");

    m_label = new QLabel(tr("Find what:"));
    m_searchInput = new QLineEdit;
    m_findNext = new QPushButton(tr("&Find"));
    m_cancel = new QPushButton(tr("&Close"));

    connect(m_cancel, SIGNAL(clicked()), this, SLOT(close()));
    connect(m_findNext,SIGNAL(clicked()),this, SLOT(find_next()));
    new QShortcut(QKeySequence(Qt::Key_Enter), this, SLOT(find_next()));

    QHBoxLayout* findLayout = new QHBoxLayout();
    findLayout->addWidget(m_label);
    findLayout->addWidget(m_searchInput);

    QHBoxLayout* buttonsLayout = new QHBoxLayout();
    buttonsLayout->addWidget(m_findNext);
    buttonsLayout->addWidget(m_cancel);

    QVBoxLayout* windowLayout = new QVBoxLayout();
    windowLayout->addLayout(findLayout);
    windowLayout->addLayout(buttonsLayout);

    this->setLayout(windowLayout);
}

void SearchDialog::find_next()
{
    if (!m_searchInput->text().isEmpty()) {
        QString searchString = m_searchInput->text();
        emit new_search(searchString);
    }
}

Qt弹出搜索对话框

0 个答案: