Carbon
A simple PHP API extension for DateTime.
Carbon - A simple PHP API extension for DateTime. carbon - a simple php api extension for datetime.
I have a program which needs to behave slightly differently on Tiger than on Leopard. Does anybody know of a system call which will allow me to accurately determine which version of Mac OS X I am running. I have found a number of macro definitions to determine the OS of the build machine, but nothing really good to determine the OS of the running machine.
Thanks,
Joe
Source: (StackOverflow)
I'm writing a program (for Mac OS X, using Objective-C) and I need to create a bunch of .webloc files programmatically.
The .webloc file is simply file which is created after you drag-n-drop an URL from Safari's location bar to some folder.
Generally speaking, I need an approach to create items in a filesystem which point to some location in the Web. As I understand .webloc files should be used for this on Mac OS X.
So, is it possible to craft a .webloc file having a valid url and some title for it?
Source: (StackOverflow)
During the execution of my program I'm getting the following output in the XCode debugging console:
<Error>: CGContextSetTextMatrix: invalid context 0x0
I have no idea where in the application this NULL-context is being passed to the OS. Anyone know of a good technique to hunt it down? Can I break into the application when something is written to stdout?
Source: (StackOverflow)
The Gestalt() function located in CarbonCore/OSUtils.h has been deprecated as of OS X 10.8 Mountain Lion.
I often use this function to test the version of the OS X operating system at runtime (see the toy example below).
What other API could be used to check the OS X operating system version at runtime in a Cocoa application?
int main() {
SInt32 versMaj, versMin, versBugFix;
Gestalt(gestaltSystemVersionMajor, &versMaj);
Gestalt(gestaltSystemVersionMinor, &versMin);
Gestalt(gestaltSystemVersionBugFix, &versBugFix);
printf("OS X Version: %d.%d.%d\n", versMaj, versMin, versBugFix);
}
Source: (StackOverflow)
I am really hoping someone can help me as I have spent at-least 15 hours trying to fix this problem. I have been given a task by a potential employer and my solution is to use graphite/carbon/collectd. I am trying to run and install carbon / graphite 0.9.12 but I simply can't get carbon to start. Every time I try and start carbon I end up with the following error. I am using a bash script to install to keep everything consistent.
I don't really know python at all so would appreciate any help you can provide.
/etc/rc0.d/K20carbon-cache -> ../init.d/carbon-cache
/etc/rc1.d/K20carbon-cache -> ../init.d/carbon-cache
/etc/rc6.d/K20carbon-cache -> ../init.d/carbon-cache
/etc/rc2.d/S20carbon-cache -> ../init.d/carbon-cache
/etc/rc3.d/S20carbon-cache -> ../init.d/carbon-cache
/etc/rc4.d/S20carbon-cache -> ../init.d/carbon-cache
/etc/rc5.d/S20carbon-cache -> ../init.d/carbon-cache
Traceback (most recent call last):
File "/opt/graphite/bin/carbon-cache.py",
line 28, in from carbon.util import run_twistd_plugin
File "/opt/graphite/lib/carbon/util.py",
line 21, in from twisted.scripts._twistd_unix import daemonize
ImportError: cannot import name daemonize
Thanks
Shane
Source: (StackOverflow)
Is there any Carbon/Cocoa/C API available on Macs that I can use to enumerate processes? I'm looking for something like EnumProcesses on Windows.
My goal is to check from code whether a process is running (by name).
Thanks!
Source: (StackOverflow)
I'm trying to get a list of all users and all groups on Mac OS X 10.5+. How can I do this?
For example, the list of all users on my machine should return:
_amavisd, _appowner, _appserver, _ard, _atsserver, _calendar, _carddav, _clamav, _coreaudiod, _cvmsroot, _cvs, _cyrus, _devdocs, _dovecot, _eppc, _installer, _jabber, _lda, _locationd, _lp, _mailman, _mcxalr, _mdnsresponder, _mysql, _pcastagent, _pcastserver, _postfix, _qtss, _sandbox, _screensaver, _securityagent, _serialnumberd, _softwareupdate, _spotlight, _sshd, _svn, _teamsserver, _timezone, _tokend, _trustevaluationagent, _unknown, _update_sharing, _usbmuxd, _uucp, _windowserver, _www, _xgridagent, _xgridcontroller, daemon, dave, nobody, root (that was painstakingly compiled manually).
How can I get that list (and the corresponding list of all groups) programmatically? I'm open to alternative (non-c based) solutions, such as Applescript, commandline, etc.
Update a long time later
TALlama's answer prompted me to investigate the API to Open Directory, and I found that this list can be easily acquired programmatically:
#import <OpenDirectory/OpenDirectory.h>
ODSession *s = [ODSession defaultSession];
ODNode *root = [ODNode nodeWithSession:s name:@"/Local/Default" error:nil];
ODQuery *q = [ODQuery queryWithNode:root forRecordTypes:kODRecordTypeUsers attribute:nil matchType:0 queryValues:nil returnAttributes:nil maximumResults:0 error:nil];
NSArray *results = [q resultsAllowingPartial:NO error:nil];
for (ODRecord *r in results) {
NSLog(@"%@", [r recordName]);
}
That will log the usernames of every user on the system. Substituting in kODRecordTypeGroups will get you the list of all the groups.
The -[ODQuery resultsAllowingPartial:error:] method is a blocking call, so you'd either want to execute this code on a background thread, or use an <ODQueryDelegate> to aggregate the results.
Source: (StackOverflow)
Is there a way to register for global mouse moved events in Cocoa? I was able to register for the events using Carbon's InstallEventHandler(), but would prefer a Cocoa equivalent. I have looked for NSNotificationCenter events, but there doesn't seem to be any public event names (are there private ones?)
Alternatively, is there a way to use NSTrackingArea for views with a clearColor background?
The app is Snow Leopard only.
Source: (StackOverflow)
Mac OS X stores some files with resource forks. I need to create a file with a resource fork. The trouble is, I need to create this file on the command line. Is anyone aware of how you can create a file with a resource form on the command line in Mac OS X?
Source: (StackOverflow)
So here's what is going on.
I am attempting to work with Core Audio, specifically input devices. I want to mute, change volume, etc, etc. I've encountered something absolutely bizarre that I cannot figure out. Thus far, google has been of no help.
When I query the system and ask for a list of all audio devices, I am returned an array of device IDs. In this case, 261, 259, 263, 257.
Using kAudioDevicePropertyDeviceName, I get the following:
261: Built-in Microphone
259: Built-in Input
263: Built-in Output
257: iPhoneSimulatorAudioDevice
This is all well and good.
// This method returns an NSArray of all the audio devices on the system, both input and
// On my system, it returns 261, 259, 263, 257
- (NSArray*)getAudioDevices
{
AudioObjectPropertyAddress propertyAddress = {
kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
UInt32 dataSize = 0;
OSStatus status = AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &dataSize);
if(kAudioHardwareNoError != status)
{
MZLog(@"Unable to get number of audio devices. Error: %d",status);
return NULL;
}
UInt32 deviceCount = dataSize / sizeof(AudioDeviceID);
AudioDeviceID *audioDevices = malloc(dataSize);
status = AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, NULL, &dataSize, audioDevices);
if(kAudioHardwareNoError != status)
{
MZLog(@"AudioObjectGetPropertyData failed when getting device IDs. Error: %d",status);
free(audioDevices), audioDevices = NULL;
return NULL;
}
NSMutableArray* devices = [NSMutableArray array];
for(UInt32 i = 0; i < deviceCount; i++)
{
MZLog(@"device found: %d",audioDevices[i]);
[devices addObject:[NSNumber numberWithInt:audioDevices[i]]];
}
free(audioDevices);
return [NSArray arrayWithArray:devices];
}
The problem crops up when I then query the system and ask it for the ID of the default input device. This method returns an ID of 269, which is not listed in the array of all devices.
If I attempt to use kAudioDevicePropertyDeviceName to get the name of the device, I am returned an empty string. Although it doesn't appear to have a name, if I mute this device ID, my built-in microphone will mute. Conversely, if I mute the 261 ID, which is named "Built-In Microphone", my microphone does not mute.
// Gets the current default audio input device
// On my system, it returns 269, which is NOT LISTED in the array of ALL audio devices
- (AudioDeviceID)defaultInputDevice
{
AudioDeviceID defaultAudioDevice;
UInt32 propertySize = 0;
OSStatus status = noErr;
AudioObjectPropertyAddress propertyAOPA;
propertyAOPA.mElement = kAudioObjectPropertyElementMaster;
propertyAOPA.mScope = kAudioObjectPropertyScopeGlobal;
propertyAOPA.mSelector = kAudioHardwarePropertyDefaultInputDevice;
propertySize = sizeof(AudioDeviceID);
status = AudioHardwareServiceGetPropertyData(kAudioObjectSystemObject, &propertyAOPA, 0, NULL, &propertySize, &defaultAudioDevice);
if(status)
{ //Error
NSLog(@"Error %d retreiving default input device",status);
return 0;
}
return defaultAudioDevice;
}
To further confuse things, if I manually switch my input to "Line In" and re-run the program, I get an ID of 259 when querying for the default input device, which is listed in the array of all devices.
So, to summarize:
I am attempting to interact with the input devices in my system. If I try to interact with device ID 261 which is my "Built-In Microphone", nothing happens. If I try to interact with device ID 269 which is, apparently, a phantom ID, my built-in microphone is affected. The 269 ID is returned when I query the system for the default input device, but it is not listed when I query the system for a list of all devices.
Does anyone know what is happening? Am I simply going insane?
Thanks in advance!
Source: (StackOverflow)
It appears after much searching that there seems to be a common problem when trying to do a file copy and show a progress indicator relative to the amount of the file that has been copied. After spending some considerable time trying to resolve this issue, I find myself at the mercy of the StackOverflow Gods once again :-) - Hopefully one day I'll be among those that can help out the rookies too!
I am trying to get a progress bar to show the status of a copy process and once the copy process has finished, call a Cocoa method. The challenge - I need to make use of File Manager Carbon calls because NSFileManager does not give me the full ability I need.
I started out by trying to utilize the code on Matt Long's site Cocoa Is My Girlfriend. The code got me some good distance. I managed to get the file copy progress working. The bar updates and (with some additional searching within Apple docs) I found out how to tell if the file copy process has finished...
if (stage == kFSOperationStageComplete)
However, I have one last hurdle that is a little larger than my leap right now. I don't know how to pass an object reference into the callback and I don't know how to call a Cocoa method from the callback once finished. This is a limit of my Carbon -> Cocoa -> Carbon understanding. One of the comments on the blog said
"Instead of accessing the progress indicator via a static pointer, you can just use the void *info field of the FSFileOperationClientContext struct, and passing either the AppDelegate or the progress indicator itself."
Sounds like a great idea. Not sure how to do this. For the sake of everyone else that appears to bump into this issue and is coming from a non-Carbon background, based mostly upon the code from Matt's example, here is some simplified code as an example of the problem...
In a normal cocoa method:
CFRunLoopRef runLoop = CFRunLoopGetCurrent();
FSFileOperationRef fileOp = FSFileOperationCreate(kCFAllocatorDefault);
OSStatus status = FSFileOperationScheduleWithRunLoop(fileOp,
runLoop, kCFRunLoopDefaultMode);
if (status) {
NSLog(@"Failed to schedule operation with run loop: %@", status);
return NO;
}
// Create a filesystem ref structure for the source and destination and
// populate them with their respective paths from our NSTextFields.
FSRef source;
FSRef destination;
// Used FSPathMakeRefWithOptions instead of FSPathMakeRef which is in the
// original example because I needed to use the kFSPathMakeRefDefaultOptions
// to deal with file paths to remote folders via a /Volume reference
FSPathMakeRefWithOptions((const UInt8 *)[aSource fileSystemRepresentation],
kFSPathMakeRefDefaultOptions,
&source,
NULL);
Boolean isDir = true;
FSPathMakeRefWithOptions((const UInt8 *)[aDestDir fileSystemRepresentation],
kFSPathMakeRefDefaultOptions,
&destination,
&isDir);
// Needed to change from the original to use CFStringRef so I could convert
// from an NSString (aDestFile) to a CFStringRef (targetFilename)
CFStringRef targetFilename = (CFStringRef)aDestFile;
// Start the async copy.
status = FSCopyObjectAsync (fileOp,
&source,
&destination, // Full path to destination dir
targetFilename,
kFSFileOperationDefaultOptions,
statusCallback,
1.0,
NULL);
CFRelease(fileOp);
if (status) {
NSString * errMsg = [NSString stringWithFormat:@"%@ - %@",
[self class], status];
NSLog(@"Failed to begin asynchronous object copy: %@", status);
}
Then the callback (in the same file)
static void statusCallback (FSFileOperationRef fileOp,
const FSRef *currentItem,
FSFileOperationStage stage,
OSStatus error,
CFDictionaryRef statusDictionary,
void *info )
{
NSLog(@"Callback got called.");
// If the status dictionary is valid, we can grab the current values to
// display status changes, or in our case to update the progress indicator.
if (statusDictionary)
{
CFNumberRef bytesCompleted;
bytesCompleted = (CFNumberRef) CFDictionaryGetValue(statusDictionary,
kFSOperationBytesCompleteKey);
CGFloat floatBytesCompleted;
CFNumberGetValue (bytesCompleted, kCFNumberMaxType,
&floatBytesCompleted);
NSLog(@"Copied %d bytes so far.",
(unsigned long long)floatBytesCompleted);
// fileProgressIndicator is currently declared as a pointer to a
// static progress bar - but this needs to change so that it is a
// pointer passed in via the controller. Would like to have a
// pointer to an instance of a progress bar
[fileProgressIndicator setDoubleValue:(double)floatBytesCompleted];
[fileProgressIndicator displayIfNeeded];
}
if (stage == kFSOperationStageComplete) {
NSLog(@"Finished copying the file");
// Would like to call a Cocoa Method here...
}
}
So the bottom line is how can I:
- Pass a pointer to an instance of a progress bar from the calling method to the callback
- Upon completion, call back out to a normal Cocoa method
And as always, help is much appreciated (and hopefully the answer will solve many of the issues and complaints I have seen in many threads!!)
Source: (StackOverflow)
I'm using some Carbon code in my Cocoa project for handling global key events (shortcuts) from other applications. Currently I have setup a kEventHotKeyReleased event handler and I can successfully obtain hot keys when my application is not active. That triggers some operation in my application.
The problem I have with the behavior of kEventHotKeyReleased is:
Say for example I press the Cmd-Shift-P key combination. As soon as I release the "P" key the hot key event is triggered. I need to be able to trigger the event (or manually trigger it) when all of the keys are unpressed (i.e: the Cmd and Shift keys are released too).
It is easy to monitor for hot keys but I have seen nothing for monitoring individual keystrokes. If I could monitor the modifier key states I would be in business.
Any hints on how to do this?
Thanks in advance!
UPDATE:
I've tried using kEventRawKeyUp and kEventRawKeyModifiersChanged but while kEventHotKeyReleased works those two don't even though I set them up in the exact same way as kEventHotKeyReleased.
EventTypeSpec eventTypes[] = {{kEventClassKeyboard, kEventHotKeyReleased}, {kEventClassKeyboard, kEventRawKeyUp}};
// Changing the order in the list does not help, nor does removing kEventHotKeyReleased
OSStatus err = InstallApplicationEventHandler(&globalHotkeyHandler, GetEventTypeCount(eventTypes), eventTypes, NULL, NULL);
// err == noErr after this line
The globalHotKeyHandler method is called for kEventHotKeyReleased, but not for kEventRawKeyUp for some reason I can't seem to grasp. Here's what my globalHotKeyHandler method looks like:
OSStatus globalHotkeyHandler(EventHandlerCallRef nextHandler, EventRef anEvent, void *userData) {
NSLog(@"Something happened!");
}
Is there an additional call that needs to be made or something else I forgot?
N.B: At first glance, it seems like it could be that Access for Assistive Devices is disabled but it is not. So I'm pretty clueless.
UPDATE 2:
I investigated a bit on the CGEventTap Leibowitzn suggested and I came up with this setup:
CFMachPortRef keyUpEventTap = CGEventTapCreate(kCGHIDEventTap,kCGHeadInsertEventTap,kCGEventTapOptionListenOnly,kCGEventKeyUp,&keyUpCallback,NULL);
CFRunLoopSourceRef keyUpRunLoopSourceRef = CFMachPortCreateRunLoopSource(NULL, keyUpEventTap, 0);
CFRelease(keyUpEventTap);
CFRunLoopAddSource(CFRunLoopGetCurrent(), keyUpRunLoopSourceRef, kCFRunLoopDefaultMode);
CFRelease(keyUpRunLoopSourceRef);
... and the callback:
CGEventRef keyUpCallback (CGEventTapProxy proxy, CGEventType type, CGEventRef event, void *refcon) {
NSLog(@"KeyUp event tapped!");
return event;
}
As you can see I'm using kCGEventKeyUp as the mask for the event tap but somehow I'm receiving mouse down events ??!??
UPDATE 3:
Ok forget that, I overlooked the line in the doc that said to use CGEventMaskBit(kCGEventKeyUp) for this parameter, so the correct call is:
CGEventTapCreate(kCGHIDEventTap,kCGHeadInsertEventTap,kCGEventTapOptionListenOnly,CGEventMaskBit(kCGEventKeyUp),&keyUpCallback,NULL);
I'm still having a problem though: modifier keys do not trigger the kCGEventKeyUp...
UPDATE 4:
Ok forget that again... I'm bound to answer to my own questions 5 minutes after asking them today huh!
To intercept modifier keys, use kCGEventFlagsChanged:
CGEventTapCreate(kCGHIDEventTap,kCGHeadInsertEventTap,kCGEventTapOptionListenOnly,CGEventMaskBit(kCGEventFlagsChanged),&callbackFunction,NULL);
So in essence I got the key and modifier key state detection working, but I'm still interested in knowing why kEventRawKeyUp doesn't work...
N.B: Also note that I'm developing on Tiger with the goal of having support for new and older versions of the OS as much as possible. CGEventTap is 10.4+ only so I'll be using this for now but a backwards-compatible solution would be welcome.
Source: (StackOverflow)
I'm integrating a GTK# application into Mac OS X. GTK on Mac OS X is a wrapper over some Cocoa and Carbon fundamentals. We have some platform-specific stuff directly using Carbon global menu APIs (it's more low-level and flexible than Cocoa, and we don't need to be 64-bit).
It seems that GTK swallows up all the keyboard events before Carbon dispatches them as commands. This makes sense, because there is no mapping of Carbon commands into the GTK world. In general, this isn't a problem, because we have a global key event handler and dispatch everything via our own command system. However, this seems to be preventing Cmd-? from opening the Help search menu, and I cannot find a way to do this programmatically.
Menu Manager's MenuSelect function is promising, but I haven't figured out a way to determine the coordinate automatically, and for some reason it only works when I hit the combination twice...
Alternatively, a way to dispatch the Cmd-? keystroke to Carbon's command handling or synthesize the command event directly would be good, but I haven't had any luck in that area.
Carbon's ProcessHICommand isn't any use without a command ID and I can't figure out what it is (if there is one)
Regarding Cocoa, I can get hold of the NSWindow and call InterpretKeyEvents, but I haven't had any luck success synthesizing the NSEvent - it just beeps. The event I'm using is
var evt = NSEvent.KeyEvent (NSEventType.KeyDown, System.Drawing.PointF.Empty,
NSEventModifierMask.CommandKeyMask | NSEventModifierMask.ShiftKeyMask,
0, win.WindowNumber, NSGraphicsContext.CurrentContext, "?", "?",
false, (ushort) keycode);
Keycode is determined from a GTK keymap to be 44. I confirmed that the keycode was correct using a plain MonoMac (Cocoa) app but InterpretKeyEvents did not work with the event in that app either. And I can't find any selector associated with the command.
Source: (StackOverflow)
I am trying to find process type (32 bit/ 64bit) from process pid?
I get the process information and process list from using GetBSDProcessList method described here.
how can we get the process type information? Any Ideas?
I can use defined(i386) or defined(x86_64) but only if we are in process. I am out of the process.
Source: (StackOverflow)