1 files changed, 53 insertions, 0 deletions
diff --git a/src/XIFreeEvent.c b/src/XIFreeEvent.c
new file mode 100644
index 0000000..2dd0100
--- /dev/null
+++ b/src/XIFreeEvent.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright © 2009 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include <X11/Xlibint.h>
+#include <X11/extensions/XInput2.h>
+
+/**
+ * Free memory associated with the given event, but not the event itself.
+ */
+void
+XIFreeEventData(XIEvent *event)
+{
+    if (event->type != GenericEvent)
+        return;
+
+    switch(event->evtype)
+    {
+        case XI_Motion:
+        case XI_ButtonPress:
+        case XI_ButtonRelease:
+        case XI_KeyPress:
+        case XI_KeyRelease:
+            {
+                XIDeviceEvent *ev = (XIDeviceEvent*)event;
+                free(ev->buttons);
+                free(ev->valuators);
+                free(ev->mods);
+                free(ev->group);
+            }
+            break;
+    }
+}