I'm beginning to learn Qt for use in one of my projects, and what I need to do is create a GUI that allows the user to open a file. I was looking through the examples and I found one of them that has exactly what I need; the problem is that it's also got a whole lot of other stuff, to the point where I have no idea what I'm looking at or what I'm looking for.
Basically, my question is this:
How do I make what you can see below in the image, where after clicking on the button and selecting the relevant file, it shows and stores the file path in the box to the right?
I have already figured out how to make the button open the file dialog, my only problem is getting it to store and display the filepath.
Solved it with this:
void OpenXMLFile::on_File1Button_clicked()
{
file1Name = QFileDialog::getOpenFileName(this,
tr("Open XML File 1"), "/home", tr("XML Files (*.xml)"));
ui->File1Path->setText(file1Name);
}
void OpenXMLFile::on_File2Button_clicked()
{
file2Name = QFileDialog::getOpenFileName(this,
tr("Open XML File 2"), "/home", tr("XML Files (*.xml)"));
ui->File2Path->setText(file2Name);
}
Where this is my GUI:
(The boxes next to the buttons are Line Edits if anyone was wondering)
Related
I am trying to export a GUI (Student Grade Manager App) I created in eclipse as a JAR file and run it on my desktop. Nothing happens when I double click it (though it does successfully export) at the moment. Here's an screenshot:
GUI Screenshot - Click here
I'm assuming the main issue here is that in my GUI, I am using the File Input stream in the CourseSectionApp.java file (Where the main method is located). It reads a .txt file called "StudentMarks.txt" and that's where it gets all its student data from.:
BufferedReader aFile = new BufferedReader ( new FileReader("Marks.txt"));
model = CourseSection.loadFrom(aFile);
Is there anyway to get this to work? Can I have the .txt file just export with the JAR file so it loads together? OR is there a way to put a sub-window, like modern applications have where the user can go to File->New-> and say, "load from file", and then be allowed to navigate to the .txt file on his computer?
My main goal is to be able to email this to friends and have them use it, but I googled around and only found a few people having similiar issues with not-so-clear answers. And if the JAR file cannot do this, what can? Will making it a .exe change anything?
Screenshot of Marks.txt file
I tried to make this question as legible as possible and if there is any other information I can provide you guys, please let know.
If you don't need to write to the file, including the file as resource in the jar would be your best option. This way you can always be sure the file is available via jar entry name. E.g.
try (InputStream is = getClass().getResourceAsStream("/data/Marks.txt");
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr)){
model = CourseSection.loadFrom(br);
}
If you also need to write to the file, you can use FileChooser to open a dialog for choosing a file:
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open Marks File");
fileChooser.getExtensionFilters().add(new ExtensionFilter("Text Files", "*.txt"));
File file = fileChooser.showOpenDialog(null); // you could also pass a owner window here
if (file != null) {
// TODO: handle completed file selection by user
}
The issue described in the comments indicates that there is a problem with the classpath though. You need to make sure all required classes are available when the application is run...
I'm new to learning the Qt library, and I'm having a hard time getting QFileDialog to work properly. I want the user to be able to select a directory but also be able to view the files and folders so they know which directory they should pick. I have seen things similar to this being posted elsewhere but everything I've tried hasn't made any difference in the output.
I've tried creating my own dialog and setting the mode to directory, which says that it should display both files and folders:
QFileDialog myDialog(this);
myFileExplorer.setFileMode(QFileDialog::Directory);
myFileExplorer.setDirectory("C:/");
QString file = myFileExplorer.exec();
And I've tried using getExistingDirectory as well, but with that function it always only shows the directory as well.
Thanks
QString getExistingDirectory ( QWidget * parent = 0, const QString & caption = QString(),
const QString & dir = QString(), Options options = ShowDirsOnly )
The default options parameter is set to show dirs only, you have to change it to
QFileDialog::DontUseNativeDialog
But unfortunately you won't be able to use native dialog.
I am new to Ubuntu & Qt. I need to show busy status for other long operations. So, I was just trying to use waiting animation gif files to load instead using Progress bars.
I am using Eclipse Editor for Qt project.
Trolltech/../imageformat folder contains libqgif.so and libqgif.so.debug. I have copied these files in my debug folder too.
loader.gif is added in qrc file and kept in /Resources folder
IN MainWindow class I have added label and after setupUi(this) been called I call my ShowMovie() function as below:
ShowMovie() {
QMovie *movie = NULL;
movie = new QMovie(":/Resources/loader.gif");
if(movie->isValid()) {
ui.label_3->setMovie(movie);
movie->start();
}
else
qDebug()<<"Movie is Invalid";
qDebug()<<QImageReader::supportedImageFormats ();
}
Always isValid() function returns false & I got message that Movie is Invalid.
Last qDebug() returns
("bmp", "gif", "ico", "jpeg", "jpg", "mng", "pbm", "pgm", "png", "ppm",
"svg", "svgz", "tif", "tiff", "xbm", "xpm")
i.e means gif support is available.
I have tried to call ShowMovie() function before loading Main UI and/or on button clicked. Both fails.
Provide help on what is to be corrected.
Thank you.
you don't need to copy librairies files *.so.
Try creating the movie object with the full path to loader.gif. Does it work?
Then you have not setup correctly your resource system.
Either you have a syntax mistake in the qrc file which need to be fixed or you forgot to add it as a resource in the project file (.pro) using
RESOURCES = myqresource.qrc
Is there any way to open a folder browser dialog in Qt? When I use QFileDialog with Directory file mode, even if I specify the ShowDirsOnly option, I get the standard file dialog. I would prefer to use a dialog that asks the user to choose a directory from a directory tree.
Here's the PySide code I'm using:
from PySide import QtGui
app = QtGui.QApplication([])
dialog = QtGui.QFileDialog()
dialog.setFileMode(QtGui.QFileDialog.Directory)
dialog.setOption(QtGui.QFileDialog.ShowDirsOnly)
dialog.exec_()
And here's the result I get on Windows 7:
It appears that the order in which you call setFileMode() and setOption() matters. Make sure you're calling setFileMode() first:
QFileDialog dialog;
dialog.setFileMode(QFileDialog::Directory);
dialog.setOption(QFileDialog::ShowDirsOnly);
...
I know, that my answer is some tricky and looks like little hack, but the QFileDialog static methods like getExistingDirectory() use the native dialog, so only limited customization is possible.
However, if you create a QFileDialog instance, you get a dialog that can
be customized -- as long as you're happy messing with a live dialog.
For example, this should show a tree view with expandable directories that
you can select (hope, it must be not a problem port this code to PySide):
QFileDialog *fd = new QFileDialog;
QTreeView *tree = fd->findChild <QTreeView*>();
tree->setRootIsDecorated(true);
tree->setItemsExpandable(true);
fd->setFileMode(QFileDialog::Directory);
fd->setOption(QFileDialog::ShowDirsOnly);
fd->setViewMode(QFileDialog::Detail);
int result = fd->exec();
QString directory;
if (result)
{
directory = fd->selectedFiles()[0];
qDebug()<<directory;
}
Got that method from here
Try this line of code, it show you a folder browse dialog:
ui->txtSaveAddress->setText(folderDlg.getExistingDirectory(0,"Caption",QString(),QFileDialog::ShowDirsOnly));
This worked for me:
def getDir(self):
dialog = QtGui.QFileDialog()
dialog.setFileMode(QtGui.QFileDialog.Directory)
dialog.setOption(QtGui.QFileDialog.ShowDirsOnly)
directory = dialog.getExistingDirectory(self, 'Choose Directory', os.path.curdir)
In Qt,
QFileDialog *dlg = new QFileDialog();
QDir dir = dlg->getExistingDirectory(this, tr("Choose folder"), qgetenv("HOME"));
opens a folder choose dialog. Once I select a folder (press choose button) the folder is not closing automatically. So I tried:
if(dlg->close() == true) delete(dlg);
When I debug the dlg->close() returns true and the code delete(dlg) is hit. Still the Folder chooser dialog box is not closing.
I am using Ubuntu 11.10 64 bit OS. Using Qt libraries from the repository.
My ultimate aim is just to show a folder chooser dialog and once the folder is chosen the dialog should close. After that processing should continue. How to do this?
Thanks in advance.
Even if QFileDialog::getExistingDirectory is static and doesn't need a QFileDialog object to work, it should close the dialog window when a directory is finally chosen.
By default that function tries to open a native file dialog window, which seems to cause some problems on some platforms.
You should try forcing a non-native dialog by adding the option DontUseNativeDialog:
QString dir = QFileDialog::getExistingDirectory(
this,
tr("Choose folder"),
QDesktopServices::storageLocation(QDesktopServices::HomeLocation),
QFileDialog::ShowDirsOnly | QFileDialog::DontUseNativeDialog);
And remove the two other lines (with new QFileDialog and if(dlg->close()) ...).
getExistingDirectory(...) is a static function.
To add to cmannett85's answer:
You should not make an instance of QDialog. If you do, it's up to you to hide it. Modify your code to read
const QString home = QDesktopServices::storageLocation(QDesktopServices::HomeLocation);
const QDir dir = QFileDialog:getExistingDirectory(this, tr("Choose folder"), home);
This code should be relatively portable. qgetenv("HOME") is Unix-specific. You should not introduce gratuituous platform-specific code in Qt-based projects -- it sort of defeats the purpose of using Qt in the first place.