Working though issue 1

picture.cpp

@@ -3,34 +3,10 @@ Picture::Picture(QWidget *parent) :
   QMainWindow(parent),
   ui(new Ui::Picture){
     ui->setupUi(this);
-    connect(&commandProcess,SIGNAL(readyReadStandardOutput()),this,SLOT(log()));
-    connect(&commandProcess,SIGNAL(readyReadStandardError()),this,SLOT(log()));
     connect(ui->actionOpen_Files,SIGNAL(triggered()),this,SLOT(changeDirectory()));
     //changeDirectory();
     fillList();
   }
-void Picture::log(){
-  QByteArray cmdoutput = commandProcess.readAllStandardOutput();
-  QString txtoutput = cmdoutput;
-  ui->log->append(txtoutput);
-  cmdoutput = commandProcess.readAllStandardError();
-  txtoutput = cmdoutput;
-  ui->log->append(txtoutput);
-}
-
-std::string exec(char* cmd) {
-  FILE* pipe = popen(cmd, "r");
-  if (!pipe) return "ERROR";
-  char buffer[128];
-  std::string result = "";
-  while(!feof(pipe)) {
-    if(fgets(buffer, 128, pipe) != NULL){
-      result += buffer;
-    }
-  }
-  pclose(pipe);
-  return result;
-}
 Picture::~Picture(){
   delete ui;
 }
@@ -72,7 +48,13 @@ void Picture::on_erase_clicked(){
       a[tmp2.size()]=0;
       memcpy(a,tmp2.c_str(),tmp2.size());
       //exec(a);
-      commandProcess.start(a);
+      ui->log->append(str);
+      Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(str.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();
     }else{
       if(!ignored){
         ignored=true;

picture.h

@@ -14,6 +14,8 @@
 #include <QImageReader>
 #include <QDialog>
 #include <QProcess>
+#include <exiv2/exiv2.hpp>
+#include <cassert>
 
 namespace Ui {
     class Picture;
@@ -35,10 +37,8 @@ private slots:
     void on_refresh_clicked();
     void on_clearLog_clicked();
     void on_erase_pressed();
-    void log();
 private:
     Ui::Picture *ui;
     QDir directory;
-    QProcess commandProcess;
 };
 #endif // PICTURE_H