added some documentation to the source code

4 files changed, 20 insertions, 2 deletions

diff --git a/src/gui/exportdialog.h b/src/gui/exportdialog.h
index 0f6940b..bcb6879 100644
--- a/src/gui/exportdialog.h
+++ b/src/gui/exportdialog.h
@@ -16,6 +16,10 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+/*!
+ * A dialog for exporting a LaTeX-generated preview to PNG, JPG, or PDF.
+ */
+
 #ifndef EXPORTDIALOG_H
 #define EXPORTDIALOG_H
 
diff --git a/src/gui/latexprocess.h b/src/gui/latexprocess.h
index 4fe9987..9853883 100644
--- a/src/gui/latexprocess.h
+++ b/src/gui/latexprocess.h
@@ -16,6 +16,11 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+/*!
+ * Run pdflatex and dump its output to the appropriate tab of
+ * the PreviewWindow.
+ */
+
 #ifndef LATEXPROCESS_H
 #define LATEXPROCESS_H
 
diff --git a/src/gui/previewwindow.h b/src/gui/previewwindow.h
index cf2ffd8..a14303b 100644
--- a/src/gui/previewwindow.h
+++ b/src/gui/previewwindow.h
@@ -16,6 +16,11 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+/*!
+ * Displays a LaTeX-generated PDF preview using Poppler. The right-click
+ * menu has options for exporting to file or clipboard.
+ */
+
 #ifndef PREVIEWWINDOW_H
 #define PREVIEWWINDOW_H
 
diff --git a/src/gui/styleeditor.h b/src/gui/styleeditor.h
index e9a8a89..2c35d56 100644
--- a/src/gui/styleeditor.h
+++ b/src/gui/styleeditor.h
@@ -16,6 +16,10 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+/*!
+ * A GUI editor for .tikzstyles files.
+ */
+
 #ifndef STYLEEDITOR_H
 #define STYLEEDITOR_H
 
@@ -35,8 +39,8 @@ class StyleEditor : public QMainWindow
     Q_OBJECT
 
 public:
-    explicit StyleEditor(QWidget *parent = 0);
-    ~StyleEditor();
+    explicit StyleEditor(QWidget *parent = nullptr);
+    ~StyleEditor() override;
 
     void open();
     void save();