intercept close button clicks in loading window

apps/opencs/view/doc/loader.cpp

@@ -6,9 +6,16 @@
 #include <QProgressBar>
 #include <QCursor>
 #include <QDialogButtonBox>
+#include <QCloseEvent>
 
 #include "../../model/doc/document.hpp"
 
+void CSVDoc::LoadingDocument::closeEvent (QCloseEvent *event)
+{
+    event->ignore();
+    emit cancel (mDocument);
+}
+
 CSVDoc::LoadingDocument::LoadingDocument (CSMDoc::Document *document)
 : mDocument (document)
 {

apps/opencs/view/doc/loader.hpp

@@ -26,6 +26,10 @@ namespace CSVDoc
             QProgressBar *mFileProgress;
             QProgressBar *mRecordProgress;
 
+        private:
+
+            void closeEvent (QCloseEvent *event);
+
         public:
 
             LoadingDocument (CSMDoc::Document *document);