Set window application icon.

app/main.cpp

@@ -5,6 +5,7 @@
 #include <QStringList>
 
 #include <QtWidgets/QApplication>
+#include <QIcon>
 
 #include <QDebug>
 #include <stdlib.h>
@@ -38,6 +39,12 @@ int main(int argc, char *argv[])
     QQmlApplicationEngine engine;
     FileIO fileIO;
 
+#if !defined(Q_OS_MAC)
+    app.setWindowIcon(QIcon::fromTheme("cool-retro-term", QIcon(":../icons/32x32/cool-retro-term.png")));
+#else
+    app.setWindowIcon(QIcon(":../icons/32x32/cool-retro-term.png"));
+#endif
+
     // Manage command line arguments from the cpp side
     QStringList args = app.arguments();
     if (args.contains("-h") || args.contains("--help")) {

app/qml/resources.qrc

@@ -51,5 +51,6 @@
         <file>fonts/modern-inconsolata/Inconsolata.otf</file>
         <file>SettingsScreenTab.qml</file>
         <file>fonts/modern-fixedsys-excelsior/FSEX301-L2.ttf</file>
+        <file>../icons/32x32/cool-retro-term.png</file>
     </qresource>
 </RCC>