diff -Nur mozilla-bak/widget/src/gtk2/nsWindow.cpp mozilla/widget/src/gtk2/nsWindow.cpp
--- mozilla-bak/widget/src/gtk2/nsWindow.cpp	2004-06-11 00:02:36.000000000 +0900
+++ mozilla/widget/src/gtk2/nsWindow.cpp	2004-11-01 23:54:26.949435256 +0900
@@ -3929,6 +3929,22 @@
 
     nsEventStatus status;
     DispatchEvent(&compEvent, status);
+
+    GtkWidget *widget =
+        get_gtk_widget_for_gdk_window(this->mDrawingarea->inner_window);
+    GdkWindow *win = this->mDrawingarea->inner_window;
+
+    gint x1, y1, x2, y2;
+    gdk_window_get_origin(widget->window, &x1, &y1);
+    gdk_window_get_origin(win, &x2, &y2);
+
+    GdkRectangle area;
+    area.x = compEvent.theReply.mCursorPosition.x + (unsigned int) (x2 - x1);
+    area.y = compEvent.theReply.mCursorPosition.y + (unsigned int) (y2 - y1);
+    area.width  = 0;
+    area.height = compEvent.theReply.mCursorPosition.height;
+
+    gtk_im_context_set_cursor_location(IMEGetContext(), &area);
 }
 
 void