diff --git a/src/hexeditor.cc b/src/hexeditor.cc
index a9215c9..44fc427 100644
--- a/src/hexeditor.cc
+++ b/src/hexeditor.cc
@@ -102,7 +102,13 @@ HexEditor::HexEditor(const std::string &filename)
   start_color();
 
   // マウス対応
+#ifdef _WIN32
+  mousemask(ALL_MOUSE_EVENTS, nullptr);
+  mouse_set(ALL_MOUSE_EVENTS);
+  request_mouse_pos();
+#else
   mousemask(ALL_MOUSE_EVENTS | REPORT_MOUSE_POSITION, nullptr);
+#endif
   isMouse = true;
 
   init_pair(1, COLOR_BLACK, COLOR_WHITE); // カーソル
@@ -764,17 +770,24 @@ void HexEditor::handleReplace() {
 
 void HexEditor::handleMouse() {
 #ifdef _WIN32
-  if (getmouse() == 0) return;
+  request_mouse_pos();
 
   int mx = Mouse_status.x;
   int my = Mouse_status.y;
 
-  if (!(Mouse_status.button[0] & BUTTON1_PRESSED)
-    || (Mouse_status.changes & 0x01)) return;
+  bool click = false;
+  for (int i = 0; i < 3; ++i) {
+    if ((Mouse_status.button[i] & BUTTON1_PRESSED)
+    || (Mouse_status.button[i] & BUTTON1_CLICKED)) {
+      click = true;
+      break;
+    }
+  }
+  if (!click) return;
 #else
   MEVENT event;
   if (getmouse(&event) != OK) return;
-  if (!(event.bstate & BUTTON1_PRESSED)) return;
+  if (!(event.bstate & (BUTTON1_PRESSED | BUTTON1_CLICKED))) return;
 
   int mx = event.x;
   int my = event.y;