1 files changed, 15 insertions, 0 deletions

diff --git a/libopie2/opiecore/oinputsystem.cpp b/libopie2/opiecore/oinputsystem.cpp
index bfdc31f..fde36c3 100644
--- a/libopie2/opiecore/oinputsystem.cpp
+++ b/libopie2/opiecore/oinputsystem.cpp
@@ -42,2 +42,7 @@ using namespace Opie::Core;
 #define BUFSIZE 256
+#define     BIT_MASK( name, numbits )                                        \
+    unsigned short  name[ ((numbits) - 1) / (sizeof( short ) * 8) + 1 ];    \
+    memset( name, 0, sizeof( name ) )
+#define     BIT_TEST( bitmask, bit )    \
+    ( bitmask[ (bit) / sizeof(short) / 8 ] & (1u << ( (bit) % (sizeof(short) * 8))) )
 
@@ -142 +147,11 @@ QString OInputDevice::uniq() const
 
+bool OInputDevice::hasFeature( Feature bit ) const
+{
+    BIT_MASK( features, EV_MAX );
+            
+    if( ioctl( _fd, EVIOCGBIT( 0, EV_MAX ), features) < 0 )
+        return false;
+    else
+        return BIT_TEST( features, bit );
+}
+