Qt记事本功能齐全，主要实现打开、新建、保存、另存为、查找、居中、字体、颜色、剪切、复制、粘贴等功能
运用Qt开发工具来实现一个记事本,用户图形界面操作,通过Qt提供的图形库来设计记事本的管理、应用基本窗口，主要实现打开、新建、保存、另存为、查找、居中、字体、颜色等功能设计,同时在软件内部实现对于这些功能的支持和实现。还有对用户剪切、复制、粘贴、等功能的支持
核心代码讲解
1、打开文件功能
void MainWindow::on_action_2_triggered()
{
QString filename = QFileDialog::getOpenFileName(this);
loadFile(filename);
}
打开文件on_action_2_triggered()通过转到槽实现首先定义一个Qstring类型的filename让它获取你文件名，其次寻找它的本地连接。
3、保存文件功能
void MainWindow::on_action_3_triggered()
{
if(isSaved){
saveFile(curFile);
}
else{
do_file_SaveAS();
}
}
保存文件功能on_action_3_triggered()通过转到槽实现，先判断bool型的isSaved是否是正确的，如果错则保存当前文件，否则执行另存为。
5、关闭功能
void MainWindow::on_action_5_triggered()
{
if(close){
QMessageBox::information(this,"提示","文件尚未保存，关闭");
}else{
ui->textEdit->close();
}
}
关闭功能on_action_5_triggered()先对文本进行判断是否是关闭的，如果是错弹出对话框提示消息文件尚未保存，关闭，否则对文档进行关闭
11、查找功能
//查找
void MainWindow::close_findhangshu()
{
ui->gridLayoutWidget->close();
}
close_findhangshu()对查找对话框进行关闭函数。
void MainWindow::on_action_11_triggered()
{
QDialog *closefind=new QDialog(this);
QDialog *findDlg=new QDialog(this);
find_textLineEdit=new QLineEdit(findDlg);
QPushButton *find_Bth=new QPushButton(tr("查找下一个"),findDlg);
QPushButton *close_find=new QPushButton(tr("关闭"),closefind);
ui->gridLayout->addWidget(find_textLineEdit);
ui->gridLayout->addWidget(find_Bth);
ui->gridLayout->addWidget(close_find);
connect(find_Bth,SIGNAL(clicked()),this,SLOT(show_findText()));
connect(close_find,SIGNAL(clicked()),this,SLOT(close_findhangshu()));
}
查找功能on_action_11_triggered()函数通过转到槽实现下面部分：先定义两个QDialog类型 指针变量*closefind和*findDlg，对它们进行新创建空间，
find_textLineEdit=new QLineEdit(findDlg);新建一个空间对QlineEdit它进行传参，将findDlg传入目的是查找在文档中对应的文字，QPushButton *find_Bth=new QPushButton(tr("查找下一个"),findDlg);QPushButton *close_find=new QPushButton(tr("关闭"),closefind);这两个代码作用相同定义两个Qpubutton当点击查找功能弹出对话框时在对话框中实现查找下一个和关闭connect(find_Bth,SIGNAL(clicked()),this,SLOT(show_findText()));connect(close_find,SI
文件下载
资源详情
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