From ec8679e9b667dd6de9ef29e0d01085b219901e3b Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Mon, 25 Sep 2000 16:17:53 +0000
Subject: [PATCH] Add an invisible System Caret for blind-helper-software to
 track

git-svn-id: svn://svn.tartarus.org/sgt/putty@627 cda61777-01e9-0310-a592-d414129be87e
---
 putty.h    |  1 +
 terminal.c |  3 ++-
 window.c   | 12 ++++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/putty.h b/putty.h
index 1ab5b99e..016c56c8 100644
--- a/putty.h
+++ b/putty.h
@@ -249,6 +249,7 @@ void connection_fatal(char *, ...);
 void fatalbox (char *, ...);
 void beep (int);
 void begin_session(void);
+void sys_cursor(int x, int y);
 #define OPTIMISE_IS_SCROLL 1
 
 /*
diff --git a/terminal.c b/terminal.c
index d62c8cd5..f5a2ae01 100644
--- a/terminal.c
+++ b/terminal.c
@@ -211,6 +211,7 @@ void term_update(void) {
 	    seen_disp_event = seen_key_event = 0;
 	}
 	do_paint (ctx, TRUE);
+        sys_cursor(curs_x, curs_y + (scrtop - disptop) / (cols+1));
 	free_ctx (ctx);
     }
 }
@@ -1695,7 +1696,7 @@ static int linecmp (unsigned long *a, unsigned long *b) {
  * Given a context, update the window. Out of paranoia, we don't
  * allow WM_PAINT responses to do scrolling optimisations.
  */
-static void do_paint (Context ctx, int may_optimise){ 
+static void do_paint (Context ctx, int may_optimise){
     int i, j, start, our_curs_y;
     unsigned long attr, rv, cursor;
     char ch[1024];
diff --git a/window.c b/window.c
index 5b05a0b0..91b4dc53 100644
--- a/window.c
+++ b/window.c
@@ -1269,11 +1269,13 @@ static LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
 	return 0;
       case WM_SETFOCUS:
 	has_focus = TRUE;
+        CreateCaret(hwnd, NULL, font_width, font_height);
 	term_out();
 	term_update();
 	break;
       case WM_KILLFOCUS:
 	has_focus = FALSE;
+        DestroyCaret();
 	term_out();
 	term_update();
 	break;
@@ -1448,6 +1450,16 @@ static LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
 }
 
 /*
+ * Move the system caret. (We maintain one, even though it's
+ * invisible, for the benefit of blind people: apparently some
+ * helper software tracks the system caret, so we should arrange to
+ * have one.)
+ */
+void sys_cursor(int x, int y) {
+    SetCaretPos(x * font_width, y * font_height);
+}
+
+/*
  * Draw a line of text in the window, at given character
  * coordinates, in given attributes.
  *
-- 
2.11.0