Cleanup: comment on source of button event codes

2021-07-07 13:21:57 +01:00
parent 0153e99780
commit ecbf838fee
1 changed files with 7 additions and 0 deletions
--- a/intern/ghost/intern/GHOST_SystemWayland.cpp
+++ b/intern/ghost/intern/GHOST_SystemWayland.cpp
@@ -52,6 +52,13 @@

 #include <cstring>

+#include <linux/input-event-codes.h>
+
+/* selected input event code defines from 'linux/input-event-codes.h'
+ * We include some of the button input event codes here, since the header is
+ * only available in more recent kernel versions. The event codes are used to
+ * to differentiate from which mouse button an event comes from.
+ */
 #define BTN_LEFT    0x110
 #define BTN_RIGHT   0x111
 #define BTN_MIDDLE  0x112