From 182cd25d7cc9b4a3663ab311ecbe3a2f18f0a378 Mon Sep 17 00:00:00 2001
From: Artur Wieczorek <artwik@wp.pl>
Date: Fri, 19 Feb 2021 19:34:00 +0100
Subject: [PATCH] Apply anti-alias mode to fonts with GDI+

See #19049.
---
 src/msw/graphics.cpp | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/msw/graphics.cpp b/src/msw/graphics.cpp
index 229772c7fd..8a0207a437 100644
--- a/src/msw/graphics.cpp
+++ b/src/msw/graphics.cpp
@@ -2056,27 +2056,27 @@ bool wxGDIPlusContext::SetAntialiasMode(wxAntialiasMode antialias)
     if (m_antialias == antialias)
         return true;
 
-    // MinGW currently doesn't provide InterpolationModeInvalid in its headers,
-    // so use our own definition.
-    static const SmoothingMode
-        wxSmoothingModeInvalid = static_cast<SmoothingMode>(-1);
-
-    SmoothingMode antialiasMode = wxSmoothingModeInvalid;
+    SmoothingMode antialiasMode;
+    TextRenderingHint textRenderingHint;
     switch (antialias)
     {
         case wxANTIALIAS_DEFAULT:
             antialiasMode = SmoothingModeHighQuality;
+            textRenderingHint = TextRenderingHintSystemDefault;
             break;
 
         case wxANTIALIAS_NONE:
             antialiasMode = SmoothingModeNone;
+            textRenderingHint = TextRenderingHintSingleBitPerPixel;
             break;
+
+        default:
+            wxFAIL_MSG("Unknown antialias mode");
+            return false;
     }
 
-    wxCHECK_MSG( antialiasMode != wxSmoothingModeInvalid, false,
-                 wxS("Unknown antialias mode") );
-
-    if ( m_context->SetSmoothingMode(antialiasMode) != Gdiplus::Ok )
+    if ( m_context->SetSmoothingMode(antialiasMode) != Gdiplus::Ok ||
+         m_context->SetTextRenderingHint(textRenderingHint) != Gdiplus::Ok )
         return false;
 
     m_antialias = antialias;