Merge commit 'c1d65c7f1f6836d4fe961c0a54ea11ff8fdfc62d' as 'cmake'

cmake/CheckMacHIDAPI.cpp

@@ -0,0 +1,47 @@
+/**
+ * \file CheckMacHIDAPI.cpp
+ * \brief C++ source file used by CMake module CheckMacHIDAPI.cmake
+ *
+ * \author
+ * Ryan Pavlik, 2009-2010
+ * <rpavlik@iastate.edu>
+ * http://academic.cleardefinition.com/
+ *
+ * \author
+ * Based on code extracted from VRPN 07.22 for use as a minimal test case
+ *
+ * Attempts to compile a difficult bit of code against the Mac
+ * HID API, as two different types have been required in the callback
+ * function (UInt32 and uint32_t) and testing is the best way to know
+ * which one is correct for a given system.
+ *
+ */
+
+
+#if defined(__APPLE__)
+
+#include <stdio.h>
+#include <IOKit/IOCFPlugIn.h>
+#include <IOKit/hid/IOHIDLib.h>
+#include <IOKit/hid/IOHIDKeys.h>
+#include <CoreFoundation/CoreFoundation.h>
+void ReaderReportCallback(
+						  void *target, IOReturn result, void *refcon, void *sender, MACOSX_HID_UINT32T size
+						  )
+						  {}
+#endif
+
+int main(int argc, char* argv[]) {
+#if defined(__APPLE__)
+	io_object_t _ioObject;
+	IOHIDDeviceInterface122 **_interface;
+	bool _gotdata;
+	int _gotsize;
+	unsigned char _buffer[512];
+	IOReturn result = (*_interface)->setInterruptReportHandlerCallback(_interface,
+															  _buffer, 512,
+															  ReaderReportCallback,
+																	   NULL, 0);
+#endif
+	return 0;
+}