Exiv2 error handling implemented. Now it doesn't crash when there's a gif

picture.cpp

@@ -3,6 +3,7 @@
 #include <QDragEnterEvent>
 #include <QMimeData>
 #include <QRegExp>
+#include <QMessageBox>
 Picture::Picture(QWidget *parent) :
   QMainWindow(parent),
   ui(new Ui::Picture){
@@ -31,7 +32,6 @@ void Picture::dropEvent(QDropEvent *event){
     //qDebug() << "Dropped file:" << fileName;
   }
 }
-
 void Picture::changeDirectory(){
   QString path=QFileDialog::getExistingDirectory(this,tr("Directory"),directory.path());
   if(path.isNull()==false){
@@ -69,12 +69,20 @@ void Picture::on_erase_clicked(){
     QImageReader reader(str);
     if(!reader.format().isEmpty()){
       QString fullPath=str;
+      try{
         Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(fullPath.toStdString());
         assert (image.get() != 0);
         image->readMetadata();
         Exiv2::ExifData &exifData = image->exifData();
         exifData["Exif.Photo.UserComment"] = "charset=Ascii An ASCII Exif comment added with Exiv2";
         image->writeMetadata();
+      }catch(Exiv2::AnyError& e){
+        QMessageBox msgBox;
+        msgBox.setInformativeText("The program could not process the file: "+fullPath);
+        msgBox.setStandardButtons(QMessageBox::Ok);
+        msgBox.setDefaultButton(QMessageBox::Ok);
+        int ret=msgBox.exec();
+      }
     }else{
       if(!ignored){
         ignored=true;

picture.ui

@@ -41,7 +41,7 @@
           <item>
            <widget class="QPushButton" name="cd">
             <property name="text">
-             <string>Change Directory</string>
+             <string>Open Directory</string>
             </property>
            </widget>
           </item>