SDL: Properly position the IME window(s) on windows

From 1fc25bd83902df65e666f0cf0aa4dc717ade0748 Mon Sep 17 00:00:00 2001
From: Susko3 <[EMAIL REDACTED]>
Date: Mon, 8 Nov 2021 22:04:34 +0100
Subject: [PATCH] Properly position the IME window(s) on windows

---
 src/video/windows/SDL_windowskeyboard.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/video/windows/SDL_windowskeyboard.c b/src/video/windows/SDL_windowskeyboard.c
index b8f1053ee1..6cbf4953f4 100644
--- a/src/video/windows/SDL_windowskeyboard.c
+++ b/src/video/windows/SDL_windowskeyboard.c
@@ -249,15 +249,23 @@ WIN_SetTextInputRect(_THIS, SDL_Rect *rect)
         COMPOSITIONFORM cof;
         CANDIDATEFORM caf;
 
-        cof.dwStyle = CFS_FORCE_POSITION;
+        cof.dwStyle = CFS_RECT;
         cof.ptCurrentPos.x = videodata->ime_rect.x;
         cof.ptCurrentPos.y = videodata->ime_rect.y;
+        cof.rcArea.left = videodata->ime_rect.x;
+        cof.rcArea.right = videodata->ime_rect.x + videodata->ime_rect.w;
+        cof.rcArea.top = videodata->ime_rect.y;
+        cof.rcArea.bottom = videodata->ime_rect.y + videodata->ime_rect.h;
         ImmSetCompositionWindow(himc, &cof);
 
         caf.dwIndex = 0;
-        caf.dwStyle = CFS_CANDIDATEPOS;
+        caf.dwStyle = CFS_EXCLUDE;
         caf.ptCurrentPos.x = videodata->ime_rect.x;
         caf.ptCurrentPos.y = videodata->ime_rect.y;
+        caf.rcArea.left = videodata->ime_rect.x;
+        caf.rcArea.right = videodata->ime_rect.x + videodata->ime_rect.w;
+        caf.rcArea.top = videodata->ime_rect.y;
+        caf.rcArea.bottom = videodata->ime_rect.y + videodata->ime_rect.h;
         ImmSetCandidateWindow(himc, &caf);
 
         ImmReleaseContext(videodata->ime_hwnd_current, himc);