--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/dndfile.h	Fri Aug 14 03:15:53 2020 +0900
@@ -0,0 +1,26 @@
+// Filename   : dndfile.h
+// Last Change: 2020-08-13 木 12:16:35.
+//
+
+#pragma once
+
+class DnDFile : public wxFileDropTarget
+{
+    public:
+        DnDFile( wxTextCtrl *textCtrl )
+        {
+            m_textCtrl = textCtrl;
+        }
+        virtual bool OnDropFiles( wxCoord x, wxCoord y, const wxArrayString& filenames )
+        {
+            size_t nFiles = filenames.GetCount();
+            if ( nFiles != 1 ) return false;
+            m_textCtrl->SetValue( filenames[0] );
+
+            return true;
+        }
+
+    private:
+        wxTextCtrl* m_textCtrl;
+};
+