Add All files filter to open dialog

mainwindow.cpp

@@ -55,6 +55,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
         nameFilter.append(mimeType.suffixes());
     }
     _openFilter.append("*.fit *.fits *.xisf *.cr2 *.nef *.dng)");
+    _openFilter.append(tr(";;All files (*)"));
     nameFilter.append({"fit", "fits", "xisf", "cr2", "nef", "dng"});
 
     m_info = new ImageInfo(this);