在我的项目中,我有一个 MainWindow.cpp
文件,其中包含 "New Txt File "按钮。该按钮打开了 NewTxtFileName
对话框中,我可以按 "Create "按钮创建一个新的text.txt文件,然后打开一个保存对话框,我可以选择目录和新文件的名称。
然后打开一个保存对话框,我可以选择新文件的目录和名称。当完成后,文件的完整路径被打印在 "Path "行编辑器里面,可以用来打开第二个对话框。第二个对话框是 WriteFileDialog
其中我可以添加作者的名字,然后点击 "Ok",文件就被写入了。
但似乎行编辑器中的文件路径并没有被使用。MainWindow
类,以便调用 WriteFileDialog
.
如果我更换了 TxtFile
中的变量 NewTxtFileName::getpath()
类与 QString TxtFile= QDir::homePath+QDir::separator()+"untitled.txt"
然后打开第二个dilog,将文件和内容写入新的位置。
重要的是,文件路径打印在 "路径 "行编辑pe。如何正确地使用所需的文件位置和名称来打开的? WriteFileDialog
并保存它?
MainWindow.cpp
void MainWindow::createTxtFileName()
{
newtxtfilename = new NewTxtFileName(this);
connect(newtxtfilename,SIGNAL(ready()),this,SLOT(writefile()));
newtxtfilename->show();
newtxtfilename->activateWindow();
}
void MainWindow::writefile()
{
newfilename = new NewTxtFileName(this);
QString fileName = newfilename->getpath();
if (fileName.isEmpty()) return;
newwritedialog = new WriteFileDialog(this,fileName);
connect(newwritedialog,SIGNAL(opensignal()),this,SLOT(openfile()));
newwritedialog->show();
newwritedialog->activateWindow();
}
NewTxtFileName.cpp
void NewTxtFileName::on_CreateFileButton_clicked()
{
QString filePathName = QFileDialog::getSaveFileName(this, tr("File Name"),
QDir::homePath()+QDir::separator()+"untitled.txt","txt Files (*.txt)");
ui->Path->setText(filePathName);
if (filePathName.isEmpty()) return;
}
QString NewTxtFileName::getpath()
{
QString TxtFile= ui->Path->text();
//QString TxtFile= QDir::homePath+QDir::separator()+"untitled.txt"
QString path = TxtFile;
return path;
}
void NewTxtFileName::on_OkButton_accepted() //15/5
{
ready();
close();
}
WriteFileDialog.cpp
WriteFileDialog::WriteFileDialog(QWidget *parent,QString fileName) :
QDialog(parent),
ui(new Ui::WriteFileDialog)
{
ui->setupUi(this);
connect(ui->buttonBox,SIGNAL(accepted()),this,SLOT(create()));
txtfileName = fileName;
setWindowTitle(QFileInfo(fileName).fileName());
}
void WriteFileDialog::create() {
QString fileText = "Author Name : ";
QString fileText += ui->AuthorlineEdit->text();
QFile file(txtfileName);
if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
return;
QTextStream textStream(&file);
textStream.flush();
textStream << fileText;
file.close();
emit opensignal(txtfileName);
}
WriteFileDialog::~WriteFileDialog()
{
delete ui;
}
这是因为你正在创建一个新的实例,即 NewTxtFileName 其中你没有设置路径。
我不得不说你的代码有点乱,我觉得你应该重写信号和槽的工作流程,反正只要注释这一行就可以了,如果 写文件 总是在 createTxtFileName:
void MainWindow::writefile()
{
//You are creating a new instance of the NewTxtFileName window where you never set the path
//newfilename = new NewTxtFileName(this);
QString fileName = newfilename->getpath();
//also try using QDebug so that you know what fileName contains
qDebug() << fileName;
if (fileName.isEmpty()) return;
newwritedialog = new WriteFileDialog(this,fileName);
connect(newwritedialog,SIGNAL(opensignal()),this,SLOT(openfile()));
newwritedialog->show();
newwritedialog->activateWindow();
}