From 947687ac0de3b95c3f679fa6d5bcfb6cf69be0ee Mon Sep 17 00:00:00 2001
From: Lior Halphon <LIJI32@gmail.com>
Date: Thu, 9 Feb 2023 20:56:08 +0200
Subject: [PATCH] Use standard function

---
 SDL/gui.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/SDL/gui.c b/SDL/gui.c
index c00a531..c7d3c4b 100644
--- a/SDL/gui.c
+++ b/SDL/gui.c
@@ -567,7 +567,7 @@ static void change_cheat_address_callback(char ch)
         return;
     }
     ch = toupper(ch);
-    if (!ishexnumber(ch)) return;
+    if (!isxdigit(ch)) return;
     
     unsigned digit_count = 0;
     const char *s = text_input + 1;
@@ -643,7 +643,7 @@ static void change_cheat_value_callback(char ch)
         SDL_StopTextInput();
         return;
     }
-    if (!ishexnumber(ch)) return;
+    if (!isxdigit(ch)) return;
     ch = toupper(ch);
     size_t len = strlen(text_input);
     if (len == 3) {
@@ -721,7 +721,7 @@ static void change_cheat_old_value_callback(char ch)
         SDL_StopTextInput();
         return;
     }
-    if (!ishexnumber(ch)) return;
+    if (!isxdigit(ch)) return;
     ch = toupper(ch);
     if (strcmp(text_input, "Any") == 0) {
         strcpy(text_input, "$");
@@ -813,7 +813,7 @@ static void import_cheat_callback(char ch)
         text_input[0] = 0;
         return;
     }
-    if (ch != '-' && !ishexnumber(ch)) return;
+    if (ch != '-' && !isxdigit(ch)) return;
     ch = toupper(ch);
     size_t len = strlen(text_input);
     if (len >= 12) {