Aric Stewart : user32: Handle PosFromChar if the string is empty and so we have no ssa.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 820460fccecb3eb25e983a85088ed8c9ec2b785f
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=820460fccecb3eb25e983a85088ed8c9ec2b785f

Author: Aric Stewart <aric at codeweavers.com>
Date:   Thu Oct 27 13:38:00 2011 -0500

user32: Handle PosFromChar if the string is empty and so we have no ssa.

---

 dlls/user32/edit.c |   24 +++++++++++++++++-------
 1 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/dlls/user32/edit.c b/dlls/user32/edit.c
index f8cf757..71df7e6 100644
--- a/dlls/user32/edit.c
+++ b/dlls/user32/edit.c
@@ -1069,11 +1069,16 @@ static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
 		EDIT_UpdateUniscribeData(es, NULL, 0);
 		if (es->x_offset)
 		{
-			if (es->x_offset>= get_text_length(es))
+			if (es->x_offset >= get_text_length(es))
 			{
-				const SIZE *size;
-				size = ScriptString_pSize(es->ssa);
-				xoff = size->cx;
+				if (es->ssa)
+				{
+					const SIZE *size;
+					size = ScriptString_pSize(es->ssa);
+					xoff = size->cx;
+				}
+				else
+					xoff = 0;
 			}
 			ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
 		}
@@ -1081,9 +1086,14 @@ static LRESULT EDIT_EM_PosFromChar(EDITSTATE *es, INT index, BOOL after_wrap)
 		{
 			if (index >= get_text_length(es))
 			{
-				const SIZE *size;
-				size = ScriptString_pSize(es->ssa);
-				xi = size->cx;
+				if (es->ssa)
+				{
+					const SIZE *size;
+					size = ScriptString_pSize(es->ssa);
+					xi = size->cx;
+				}
+				else
+					xi = 0;
 			}
 			else
 				ScriptStringCPtoX(es->ssa, index, FALSE, &xi);