Configurable font quality on Windows. (Together with a little bit of

macro stuff to cope with the inadequacy of VC++ 6 headers.)

[originally from svn r6519]

windows/wincfg.c

@@ -172,6 +172,20 @@ void win_setup_config_box(struct controlbox *b, HWND *hwndp, int has_help,
 		  HELPCTX(appearance_border),
 		  dlg_stdcheckbox_handler, I(offsetof(Config,sunken_edge)));
 
+    /*
+     * Configurable font quality settings for Windows.
+     */
+    s = ctrl_getset(b, "Window/Appearance", "font",
+		    "Font settings");
+    ctrl_radiobuttons(s, "Font quality:", 'q', 2,
+		      HELPCTX(appearance_font),
+		      dlg_stdradiobutton_handler,
+		      I(offsetof(Config, font_quality)),
+		      "Antialiased", I(FQ_ANTIALIASED),
+		      "Non-Antialiased", I(FQ_NONANTIALIASED),
+		      "ClearType", I(FQ_CLEARTYPE),
+		      "Default", I(FQ_DEFAULT), NULL);
+
     /*
      * Cyrillic Lock is a horrid misfeature even on Windows, and
      * the least we can do is ensure it never makes it to any other

windows/window.c

@@ -1319,7 +1319,7 @@ static void init_fonts(int pick_width, int pick_height)
 #define f(i,c,w,u) \
     fonts[i] = CreateFont (font_height, font_width, 0, 0, w, FALSE, u, FALSE, \
 			   c, OUT_DEFAULT_PRECIS, \
-		           CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, \
+		           CLIP_DEFAULT_PRECIS, FONT_QUALITY(cfg.font_quality), \
 			   FIXED_PITCH | FF_DONTCARE, cfg.font.name)
 
     f(FONT_NORMAL, cfg.font.charset, fw_dontcare, FALSE);
@@ -1488,7 +1488,7 @@ static void another_font(int fontno)
     fonts[fontno] =
 	CreateFont(font_height * (1 + !!(fontno & FONT_HIGH)), x, 0, 0, w,
 		   FALSE, u, FALSE, c, OUT_DEFAULT_PRECIS,
-		   CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
+		   CLIP_DEFAULT_PRECIS, FONT_QUALITY(cfg.font_quality),
 		   FIXED_PITCH | FF_DONTCARE, s);
 
     fontflag[fontno] = 1;
@@ -2142,6 +2142,7 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
 		    cfg.font.isbold != prev_cfg.font.isbold ||
 		    cfg.font.height != prev_cfg.font.height ||
 		    cfg.font.charset != prev_cfg.font.charset ||
+		    cfg.font_quality != prev_cfg.font_quality ||
 		    cfg.vtmode != prev_cfg.vtmode ||
 		    cfg.bold_colour != prev_cfg.bold_colour ||
 		    cfg.resize_action == RESIZE_DISABLED ||

windows/winstuff.h

@@ -27,8 +27,30 @@ struct FontSpec {
     int charset;
 };
 
+#ifndef CLEARTYPE_QUALITY
+#define CLEARTYPE_QUALITY 5
+#endif
+#define FONT_QUALITY(fq) ( \
+    (fq) == FQ_DEFAULT ? DEFAULT_QUALITY : \
+    (fq) == FQ_ANTIALIASED ? ANTIALIASED_QUALITY : \
+    (fq) == FQ_NONANTIALIASED ? NONANTIALIASED_QUALITY : \
+    CLEARTYPE_QUALITY)
+
+/* VC++ 6 doesn't have GetWindowLongPtr and friends.  Degrade nicely. */
+
+#ifndef GWLP_USERDATA
+#define GetWindowLongPtr GetWindowLong
+#define SetWindowLongPtr SetWindowLong
+#define GWLP_USERDATA GWL_USERDATA
+#define DWLP_MSGRESULT DWL_MSGRESULT
+#endif
+
 #define BOXFLAGS DLGWINDOWEXTRA
+#ifdef LONG_PTR
 #define BOXRESULT (DLGWINDOWEXTRA + sizeof(LONG_PTR))
+#else
+#define BOXRESULT (DLGWINDOWEXTRA + 4)
+#endif
 #define DF_END 0x0001
 
 /*