how can I get information about the mouse, keyboard, gamepad in MAC OS - macos

Question

need information about the buttons of the device, how many, etc.
I tried iokit but got a strange list
name = IOUSBRootHubDevice
name = IOUSBHubDevice
name = IOUSBDevice
name = IOUSBHubDevice
name = IOUSBDevice
name = IOUSBRootHubDevice
name = IOUSBHubDevice
name = IOUSBDevice
name = IOUSBDevice
name = IOUSBDevice
my code
CFMutableDictionaryRef matchingDict;
io_iterator_t iter;
kern_return_t kr;
io_service_t device;
io_name_t name;
//io_object_t device;
/* set up a matching dictionary for the class */
matchingDict = IOServiceMatching(kIOUSBDeviceClassName);
if (matchingDict == NULL){
return -1; // fail
}
/* Now we have a dictionary, get an iterator.*/
kr = IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &iter);
if (kr != KERN_SUCCESS){
return -1;
}
/* iterate */
while ((device = IOIteratorNext(iter))){
IOObjectGetClass(device, name);
printf("name = %s \n", name);
/* do something with device, eg. check properties */
/* ... */
/* And free the reference taken before continuing to the next item */
IOObjectRelease(device);
}
/* Done, release the iterator */
IOObjectRelease(iter);
there are probably a better option, but I can not find in google

Answer 1

turned himself in, as it so
static void MyCreateHIDDeviceInterface(io_object_t hidDevice,
IOHIDDeviceInterface122 ***hidDeviceInterface)
{
io_name_t className;
IOCFPlugInInterface **plugInInterface = NULL;
HRESULT plugInResult = S_OK;
SInt32 score = 0;
IOReturn ioReturnValue = kIOReturnSuccess;
ioReturnValue = IOObjectGetClass(hidDevice, className);
printf("Failed to get class name.\n");//print_errmsg_if_io_err(ioReturnValue, "Failed to get class name.");
printf("Found device type %s\n", className);
ioReturnValue = IOCreatePlugInInterfaceForService(hidDevice,
kIOHIDDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&plugInInterface,
&score);
if (ioReturnValue == kIOReturnSuccess)
{
//Call a method of the intermediate plug-in to create the device
//interface
plugInResult = (*plugInInterface)->QueryInterface(plugInInterface,
CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID),
(LPVOID *) hidDeviceInterface);
printf("Couldn't create HID class device interface.\n");//print_errmsg_if_err(plugInResult != S_OK, "Couldn't create HID class device interface");
IODestroyPlugInInterface(plugInInterface);
//(*plugInInterface)->Release(plugInInterface);
}
}
void getCookies(IOHIDDeviceInterface122** deviceInterface){
CFArrayRef elements;
CFDictionaryRef element;
CFTypeRef object;
long number;
long usagePage;
long usage;
IOHIDElementCookie cookie;
(*deviceInterface)->copyMatchingElements(deviceInterface, NULL, &elements);
for ( CFIndex i=0; i<CFArrayGetCount(elements); i++ ){
element = (CFDictionaryRef)CFArrayGetValueAtIndex(elements, i);
// Get usage page
object = CFDictionaryGetValue(element, CFSTR(kIOHIDElementUsagePageKey));
if( object==0 || CFGetTypeID(object) != CFNumberGetTypeID() ){
continue;
}
if( !CFNumberGetValue((CFNumberRef) object, kCFNumberLongType, &number) ){
continue;
}
usagePage = number;
if( usagePage!=kHIDPage_GenericDesktop && usagePage!=kHIDPage_Button ){
continue;
}
// Get usage
object = CFDictionaryGetValue( element, CFSTR(kIOHIDElementUsageKey) );
if( object==0 || CFGetTypeID(object) != CFNumberGetTypeID() ){
continue;
}
if( !CFNumberGetValue((CFNumberRef) object, kCFNumberLongType, &number) ){
continue;
}
usage = number;
// Get cookie
object = CFDictionaryGetValue( element, CFSTR(kIOHIDElementCookieKey) );
if( object==0 || CFGetTypeID(object) != CFNumberGetTypeID() ){
continue;
}
if( !CFNumberGetValue((CFNumberRef) object, kCFNumberLongType, &number) ){
continue;
}
cookie = (IOHIDElementCookie) number;
if(usagePage == kHIDPage_GenericDesktop){
switch( usage )
{
case kHIDUsage_GD_Pointer: {
printf("kHIDUsage_GD_Pointer \n");
break;
}
case kHIDUsage_GD_Mouse: {
printf("kHIDUsage_GD_Mouse \n");
break;
};
case kHIDUsage_GD_Joystick: {
printf("kHIDUsage_GD_Joystick \n");
break;
}
case kHIDUsage_GD_GamePad: {
printf("kHIDUsage_GD_GamePad \n");
break;
}
case kHIDUsage_GD_Keyboard:{
printf("kHIDUsage_GD_Keyboard \n");
break;
};
case kHIDUsage_GD_Keypad: {
printf("kHIDUsage_GD_Keypad \n");
break;
};
case kHIDUsage_GD_MultiAxisController:{
printf("kHIDUsage_GD_MultiAxisController \n");
break;
};
case kHIDUsage_GD_X: {
printf("kHIDUsage_GD_X \n");
break;
};
case kHIDUsage_GD_Y: {
printf("kHIDUsage_GD_Y \n");
break;
};
}
} else if( usagePage == kHIDPage_Button){
printf("kHIDPage_Button \n");
}
}
}
int main(int argc, const char * argv[])
{
CFMutableDictionaryRef matchingDict;
io_iterator_t iter;
kern_return_t kr;
io_object_t device;
char name[128];
IOHIDDeviceInterface122 **deviceInterface = NULL;
/* set up a matching dictionary for the class */
matchingDict = IOServiceMatching(kIOHIDDeviceKey);//kIOHIDDeviceKey
if (matchingDict == NULL)
{
return -1; // fail
}
/* Now we have a dictionary, get an iterator.*/
kr = IOServiceGetMatchingServices(kIOMasterPortDefault, matchingDict, &iter);
if (kr != KERN_SUCCESS)
{
return -1;
}
/* iterate */
while ((device = IOIteratorNext(iter)))
{
IOObjectGetClass(device, name);
if(!strcmp(name,"BNBMouseDevice")){
MyCreateHIDDeviceInterface(device, &deviceInterface);
if(*deviceInterface != NULL){
getCookies(deviceInterface);
(*deviceInterface)->Release(deviceInterface);
}
printf("name = %s \n \n", name);
}else if(!strcmp(name,"AppleBluetoothHIDKeyboard")){
MyCreateHIDDeviceInterface(device, &deviceInterface);
if(*deviceInterface != NULL){
getCookies(deviceInterface);
(*deviceInterface)->Release(deviceInterface);
}
printf("name = %s \n \n", name);
}else if(!strcmp(name,"IOUSBHIDDriver")){
MyCreateHIDDeviceInterface(device, &deviceInterface);
if(*deviceInterface != NULL){
getCookies(deviceInterface);
(*deviceInterface)->Release(deviceInterface);
}
printf("name = %s \n \n", name);
}
IOObjectRelease(device);
}
/* Done, release the iterator */
IOObjectRelease(iter);
return 0;
}