/*
 cc -o showcursor showcursor.c -framework IOKit
*/

#include <IOKit/IOKitLib.h>
#include <IOKit/hidsystem/IOHIDShared.h>
#include <assert.h>

mach_port_t	masterPort;

io_connect_t OpenEventDriver( void )
{
	register kern_return_t	kr;
	mach_port_t		ev, service, iter;

	kr = IOServiceGetMatchingServices( masterPort, IOServiceMatching( kIOHIDSystemClass ), &iter);
	assert( KERN_SUCCESS == kr);

	service = IOIteratorNext( iter );
	assert(service);

	kr = IOServiceOpen( service, mach_task_self(), kIOHIDParamConnectType, &ev);
	assert( KERN_SUCCESS == kr );

	IOObjectRelease( service );
	IOObjectRelease( iter );

	return( ev );
}


void TestParams( io_connect_t ev, boolean_t show )
{
	kern_return_t	kr;

	kr = IOHIDSetCursorEnable( ev, show );
	assert(KERN_SUCCESS == kr);
}

int main(int argc, char **argv)
{
	kern_return_t		kr;
	boolean_t show;

	if (argc != 2)
		show = 1;
	else
		show = (atoi(argv[0]) != 0);

	assert( KERN_SUCCESS == ( kr = IOMasterPort( bootstrap_port, &masterPort) ));
	TestParams( OpenEventDriver(), show);

	return( 0 );
}