added keyevent

src/display_window.cpp

@@ -26,3 +26,11 @@ void DisplayWindow::paintEvent(QPaintEvent *) {
     QPainter painter(this);
     painter.fillRect(QRect(QPoint(0, 0), size()), QColor(0,0,0));
 }
+
+void DisplayWindow::keyPressEvent(QKeyEvent *key) {
+    
+}
+
+void DisplayWindow::keyReleaseEvent(QKeyEvent *key) {
+    
+}

src/display_window.h

@@ -10,6 +10,8 @@ public:
     void createControls();
     void displayImage(const QImage &img);
     void paintEvent(QPaintEvent *paint);
+    void keyPressEvent(QKeyEvent *ke);
+    void keyReleaseEvent(QKeyEvent *ke);
 private:
     QLabel *img_label;
 };

src/qtheaders.h

@@ -1,7 +1,7 @@
 #ifndef _QT_HEADERS__
 #define _QT_HEADERS__
 
-#define ac_version "v0.4.2-Beta"
+#define ac_version "v0.5-Beta"
 
 #include<QApplication>
 #include<QMainWindow>