Attempting QProcess execution

Picture.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.0.1, 2014-06-18T14:39:43. -->
+<!-- Written by QtCreator 3.0.1, 2014-06-18T20:10:29. -->
 <qtcreator>
  <data>
   <variable>ProjectExplorer.Project.ActiveTarget</variable>

picture.cpp

@@ -3,10 +3,21 @@ 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";
@@ -60,7 +71,8 @@ void Picture::on_erase_clicked(){
       char* a=new char[tmp2.size()+1];
       a[tmp2.size()]=0;
       memcpy(a,tmp2.c_str(),tmp2.size());
-      exec(a);
+      //exec(a);
+      commandProcess.start(a);
     }else{
       if(!ignored){
         ignored=true;
@@ -73,10 +85,14 @@ void Picture::on_erase_clicked(){
 }
 void Picture::on_refresh_clicked(){
   fillList();
+  ui->log->append("Refreshed directory");
 }
 void Picture::on_clearLog_clicked(){
   ui->log->setText("");
+  ui->tabField->setCurrentIndex(0);
 }
 void Picture::on_erase_pressed(){
   ui->log->append("Erasing metadata from images...");
+  ui->tabField->setCurrentIndex(1);
+  on_erase_clicked();
 }

picture.h

@@ -13,6 +13,7 @@
 #include <QDebug>
 #include <QImageReader>
 #include <QDialog>
+#include <QProcess>
 
 namespace Ui {
     class Picture;
@@ -34,8 +35,10 @@ 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

picture.ui

@@ -14,11 +14,27 @@
    <string>Picture</string>
   </property>
   <widget class="QWidget" name="centralWidget">
+   <widget class="QTabWidget" name="tabField">
+    <property name="geometry">
+     <rect>
+      <x>0</x>
+      <y>0</y>
+      <width>471</width>
+      <height>301</height>
+     </rect>
+    </property>
+    <property name="currentIndex">
+     <number>0</number>
+    </property>
+    <widget class="QWidget" name="tab">
+     <attribute name="title">
+      <string>Commands</string>
+     </attribute>
      <widget class="QWidget" name="layoutWidget">
       <property name="geometry">
        <rect>
-      <x>11</x>
-      <y>1</y>
+        <x>20</x>
+        <y>20</y>
         <width>258</width>
         <height>229</height>
        </rect>
@@ -47,26 +63,49 @@
        </item>
       </layout>
      </widget>
-   <widget class="QPushButton" name="erase">
+     <widget class="QWidget" name="">
       <property name="geometry">
        <rect>
-      <x>310</x>
-      <y>10</y>
-      <width>124</width>
-      <height>27</height>
+        <x>300</x>
+        <y>60</y>
+        <width>107</width>
+        <height>62</height>
        </rect>
       </property>
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <widget class="QPushButton" name="erase">
          <property name="text">
           <string>Erase Metadata</string>
          </property>
         </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="pushButton">
+         <property name="text">
+          <string>Label</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+     <zorder>fileList</zorder>
+     <zorder>fileList</zorder>
+     <zorder>layoutWidget</zorder>
+     <zorder>erase</zorder>
+     <zorder>pushButton</zorder>
+    </widget>
+    <widget class="QWidget" name="tab_2">
+     <attribute name="title">
+      <string>Log</string>
+     </attribute>
      <widget class="QTextEdit" name="log">
       <property name="geometry">
        <rect>
-      <x>310</x>
-      <y>60</y>
-      <width>301</width>
-      <height>191</height>
+        <x>10</x>
+        <y>10</y>
+        <width>381</width>
+        <height>192</height>
        </rect>
       </property>
       <property name="readOnly">
@@ -76,8 +115,8 @@
      <widget class="QPushButton" name="clearLog">
       <property name="geometry">
        <rect>
-      <x>561</x>
-      <y>222</y>
+        <x>270</x>
+        <y>220</y>
         <width>51</width>
         <height>30</height>
        </rect>
@@ -87,6 +126,8 @@
       </property>
      </widget>
     </widget>
+   </widget>
+  </widget>
   <widget class="QMenuBar" name="menuBar">
    <property name="geometry">
     <rect>