From 14cbdf2fef83d507f1ca9a107f61e621c6cd2276 Mon Sep 17 00:00:00 2001
From: johnsonj <unknown>
Date: Mon, 7 Dec 2015 11:13:48 +1100
Subject: Cancel IME composition for read-only documents.

---
 win32/ScintillaWin.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/win32/ScintillaWin.cxx b/win32/ScintillaWin.cxx
index 4756a89af..945e9cff0 100644
--- a/win32/ScintillaWin.cxx
+++ b/win32/ScintillaWin.cxx
@@ -1005,7 +1005,10 @@ sptr_t ScintillaWin::HandleCompositionInline(uptr_t, sptr_t lParam) {
 	// Great thanks for my foreruners, jiniya and BLUEnLIVE.
 
 	IMContext imc(MainHWND());
-	if (!imc.hIMC) {
+	if (!imc.hIMC)
+		return 0;
+	if (pdoc->IsReadOnly()) {
+		::ImmNotifyIME(imc.hIMC, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
 		return 0;
 	}
 
-- 
cgit v1.2.3