Add a simple About page that shows the library build version

utils/alsoft-config/mainwindow.cpp

@@ -292,6 +292,8 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(ui->actionLoad, SIGNAL(triggered()), this, SLOT(loadConfigFromFile()));
     connect(ui->actionSave_As, SIGNAL(triggered()), this, SLOT(saveConfigAsFile()));
 
+    connect(ui->actionAbout, SIGNAL(triggered()), this, SLOT(showAboutPage()));
+
     connect(ui->closeCancelButton, SIGNAL(clicked()), this, SLOT(cancelCloseAction()));
     connect(ui->applyButton, SIGNAL(clicked()), this, SLOT(saveCurrentConfig()));
 
@@ -427,6 +429,14 @@ void MainWindow::cancelCloseAction()
 }
 
 
+void MainWindow::showAboutPage()
+{
+    QMessageBox::information(this, tr("About"),
+        tr("OpenAL Soft Configuration Utility.\nBuilt for OpenAL Soft library version ")+(ALSOFT_VERSION ".")
+    );
+}
+
+
 QStringList MainWindow::collectHrtfs()
 {
     QStringList ret;

utils/alsoft-config/mainwindow.h

@@ -24,6 +24,8 @@ private slots:
     void saveConfigAsFile();
     void loadConfigFromFile();
 
+    void showAboutPage();
+
     void enableApplyButton();
 
     void updateResamplerLabel(int num);

utils/alsoft-config/mainwindow.ui

@@ -1964,7 +1964,14 @@ added by the ALC_EXT_DEDICATED extension.</string>
     <addaction name="separator"/>
     <addaction name="actionQuit"/>
    </widget>
+   <widget class="QMenu" name="menuHelp">
+    <property name="title">
+     <string>&amp;Help</string>
+    </property>
+    <addaction name="actionAbout"/>
+   </widget>
    <addaction name="menuFile"/>
+   <addaction name="menuHelp"/>
   </widget>
   <action name="actionQuit">
    <property name="icon">
@@ -2002,6 +2009,11 @@ added by the ALC_EXT_DEDICATED extension.</string>
     <string>Load Configuration File</string>
    </property>
   </action>
+  <action name="actionAbout">
+   <property name="text">
+    <string>&amp;About...</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources/>