Use wx_ptr for AutoCropDialog

3 files changed, 11 insertions, 7 deletions

diff --git a/src/wx/auto_crop_dialog.h b/src/wx/auto_crop_dialog.h
index 6c02acbdd..4ccd681ed 100644
--- a/src/wx/auto_crop_dialog.h
+++ b/src/wx/auto_crop_dialog.h
@@ -19,6 +19,10 @@
 */
 
 
+#ifndef DCPOMATIC_AUTO_CROP_DIALOG_H
+#define DCPOMATIC_AUTO_CROP_DIALOG_H
+
+
 #include "table_dialog.h"
 #include "lib/crop.h"
 #include <boost/signals2.hpp>
@@ -45,3 +49,6 @@ private:
 	SpinCtrl* _threshold;
 };
 
+
+#endif
+
diff --git a/src/wx/content_menu.cc b/src/wx/content_menu.cc
index ac7a2b58b..83b84f594 100644
--- a/src/wx/content_menu.cc
+++ b/src/wx/content_menu.cc
@@ -545,11 +545,7 @@ ContentMenu::auto_crop ()
 	auto const crop = guess_crop_for_content ();
 	update_viewer (crop);
 
-	if (_auto_crop_dialog) {
-		_auto_crop_dialog->Destroy();
-		_auto_crop_dialog = nullptr;
-	}
-	_auto_crop_dialog = new AutoCropDialog (_parent, crop);
+	_auto_crop_dialog.reset(_parent, crop);
 	_auto_crop_dialog->Show ();
 
 	/* Update the dialog and view when the crop threshold changes */
diff --git a/src/wx/content_menu.h b/src/wx/content_menu.h
index 783a5be04..c750ae852 100644
--- a/src/wx/content_menu.h
+++ b/src/wx/content_menu.h
@@ -23,7 +23,9 @@
 #define DCPOMATIC_CONTENT_MENU_H
 
 
+#include "auto_crop_dialog.h"
 #include "timeline_content_view.h"
+#include "wx_ptr.h"
 #include "lib/types.h"
 #include <dcp/warnings.h>
 LIBDCP_DISABLE_WARNINGS
@@ -32,7 +34,6 @@ LIBDCP_ENABLE_WARNINGS
 #include <memory>
 
 
-class AutoCropDialog;
 class DCPContent;
 class Film;
 class FilmViewer;
@@ -85,7 +86,7 @@ private:
 	wxMenuItem* _set_dcp_settings;
 	wxMenuItem* _remove;
 
-	AutoCropDialog* _auto_crop_dialog = nullptr;
+	wx_ptr<AutoCropDialog> _auto_crop_dialog;
 	boost::signals2::scoped_connection _auto_crop_config_connection;
 	boost::signals2::scoped_connection _auto_crop_viewer_connection;
 };