From 0b75559334510592ba6064bcb66657cdda36b758 Mon Sep 17 00:00:00 2001
From: Teddy Wing
Date: Sun, 7 Mar 2021 13:49:24 +0100
Subject: register_hotkeys: Add error handling

Fail to start if we can't register hotkeys.
---
 main.m | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/main.m b/main.m
index 87e64c0..c04c2c8 100644
--- a/main.m
+++ b/main.m
@@ -1,8 +1,12 @@
 #import <Carbon/Carbon.h>
 
+#include <sysexits.h>
+
 #import "Invert.h"
 #import "DDHotKeyCenter.h"
 
+#define E_REGISTER_HOTKEY 5
+
 int register_hotkeys();
 
 int main(int argc, const char * argv[]) {
@@ -11,6 +15,9 @@ int main(int argc, const char * argv[]) {
     [NSApplication sharedApplication];
 
     int error_code = register_hotkeys();
+    if (error_code == E_REGISTER_HOTKEY) {
+        return EX_SOFTWARE;
+    }
 
     [NSApp run];
 
@@ -29,7 +36,9 @@ int register_hotkeys() {
             action:@selector(toggleInvertColors:)
             object:nil]
     ) {
-        NSLog(@"Error registering hotkey");
+        NSLog(@"Error registering hotkey Apple+Option+Control-8");
+
+        return E_REGISTER_HOTKEY;
     }
 
     if (
@@ -39,7 +48,9 @@ int register_hotkeys() {
             action:@selector(toggleInvertColors:)
             object:nil]
     ) {
-        NSLog(@"Error registering hotkey");
+        NSLog(@"Error registering hotkey F8");
+
+        return E_REGISTER_HOTKEY;
     }
 
     return 0;
-- 
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