Trevor being Trevor

This post has a lot of information to give the necessary context, but essentially I can't get the project to build when I add the code to simulate a keystroke and I am not sure why. I was able to figure this out for Windows, but I am running into a problem on Mac that I can't get past. I followed the instructions of this video and github page which seem to be the most up to date.

https://www.youtube.com/watch?v=il5WblTBUgs 
https://github.com/Cycling74/max-sdk/blob/main/README-8.2-update.md 

I started by manipulating the min.hello-world project. I removed the greeting when the object loads, edited the bang function and created a function that responds to integers. Everything compiles and works as expected. However, I want to simulate a keystroke so I brought in the following libraries...

#include <CoreGraphics/CoreGraphics.h>
#include <ApplicationServices/ApplicationServices.h>
#include <Carbon/Carbon.h>

As far as I understand, I only need Application Services, but the other ones were added as I tried to troubleshoot issues. Anyway, to use those libraries I updated my "respond to integer" function to the following code...

message<> number {this, "int", 
        MIN_FUNCTION {
            int key = 56;
            //EDIT: this code is close to correct, but definitely don't trust it.
            //there are better examples on Stack Overflow, if you are really stuck
            //comment and could share something better. Also, it appears
            //olsen put 11strokes code up on Github. It says it's cross platform, so it
            //may be a better and more comprehensive source than what I could offer.
            
            // Create an HID hardware event source
            CGEventSourceRef src = CGEventSourceCreate(kCGEventSourceStateHIDSystemState);
            
            // Create a new keyboard key press event
            CGEventRef evt = CGEventCreateKeyboardEvent(src, (CGKeyCode) key, true);
            
            // Post keyboard event and release
            CGEventPost (kCGHIDEventTap, evt);
            CFRelease (evt);
            CFRelease (src);
 
            //this line printed before I added the above
            cout<< "Sometimes I work, sometimes I don't" << endl;
            return {};
        }
    };

Instead of Xcode (I am not very familiar with it) I am using the terminal to build using the command "cmake --build ." inside the build folder which works great. However, the build fails once I add the keystroke specific code. This is the error given with crucial information in bold...

Undefined symbols for architecture x86_64:
"_CFRelease", referenced from:
      hello_world::number::'lambda'(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const&, int)::operator()(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const, int) const in min.hello-world.o
  "_CGEventCreateKeyboardEvent", referenced from:
      hello_world::number::'lambda'(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const&, int)::operator()(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const, int) const in min.hello-world.o
  "_CGEventPost", referenced from:
      hello_world::number::'lambda'(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const&, int)::operator()(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const, int) const in min.hello-world.o
  "_CGEventSourceCreate", referenced from:
      hello_world::number::'lambda'(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const&, int)::operator()(std::__1::vector<c74::min::atom, hello_world::number::allocator<c74::min>> const, int) const in min.hello-world.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Even though it says the issue is for x86_64 I have seen it say arm64 instead as I've tried to get things working. For that reason, I don't think the issue is specific to the architecture, but I could be wrong. Also,  Xcode intellisense autocompletes these symbols as I type them and I am able to right click and "Jump to Definition" so there is a clearly a path to these symbols, but apparently the linker or compiler is unaware of that path. To combat this (and an earlier issue), I tried updating the CMakeLists.txt for min.helloworld to the following...

# Copyright 2018 The Min-DevKit Authors. All rights reserved.
# Use of this source code is governed by the MIT License found in the License.md file.
cmake_minimum_required(VERSION 3.0)
set(C74_MIN_API_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../min-api)
include(${C74_MIN_API_DIR}/script/min-pretarget.cmake)
#############################################################
# MAX EXTERNAL
#############################################################
include_directories( 
	"${C74_INCLUDES}"
	"/System/Library/Frameworks/CoreFoundation.framework/Headers"
    	"/System/Library/Frameworks/ApplicationServices.framework/Headers"
    	"/System/Library/Frameworks/Carbon.framework/Headers" 
    	"/System/Library/Frameworks/CoreGraphics.framework/Headers"
)
set( SOURCE_FILES
	${PROJECT_NAME}.cpp
)

add_library( 
	${PROJECT_NAME} 
	MODULE
	${SOURCE_FILES}
)

target_link_libraries(  
	${PROJECT_NAME}
	"${C74_LIBS}"
	"-framework CoreFoundation" 
    	"-framework ApplicationServices"
    	"-framework Carbon"  
    	"-framework CoreGraphics"
)

include(${C74_MIN_API_DIR}/script/min-posttarget.cmake)
#############################################################
# UNIT TEST
#############################################################
include(${C74_MIN_API_DIR}/test/min-object-unittest.cmake)


Lastly, in trying to figure this out I was made aware of the 11olsen 11strokes project. That could potentially work for me, but I've already built something specific on Windows and replicating it on Mac would be much less future headache if possible. Also, learning is fun most of the time haha. 

Anyway I'm at the point where I don't know how to proceed. It's probably something simple, but this is a bit out of my element so I'm struggling to see it. Any advice or ideas are welcomed and greatly appreciated!

2021 Macbook Pro, M1 Pro, Ventura 13.3.1
cmake version 3.26.0
xcode version 14.3
max version 8.5.3
Let me know if you need anymore info!

This post has a lot of information to give the necessary context, but essentially I can't get the project to build when I add the code to ... 

mac-keystrokes-using-the-mindevkit

Following up on my own post, here's what I did to accomplish the task for those in the future. 

First, I decided to eliminate CMake and the min-devkit as variables completely and just write a basic "Command Line Tool" in Xcode to simulate a keystroke. This was a struggle and I went at the problem from many angles over a couple of days. As far I can tell, this isn't possible via C++ or Apple doesn't let any old app simulate keystrokes anymore . In hindsight, I'm thinking it's the latter. I would run my code, it would trigger Security and Privacy settings and I would allow it, but then it still not give the expected output. As far as I can tell you need to submit some kind of enhancement request now. (I tested this on Apple Silicon and Intel Based Macs by the way)
https://developer.apple.com/forums/thread/28605

Second, from my post above I was now aware of 11strokes by olsen. I downloaded it and tested it in Max, works great! That told me it was definitely possible to simulate keystrokes. In addition, I'm not sure now, but at the time I was suspicious that C++ may be part of the issue. Also I noticed 11olsen used the max-sdk instead of the min-devkit so I decided to switch to that. I am not as familiar with C so it took a little while to understand and get a customized basic object up and running. 

Once that was ready, I brought in the code to simulate a single keystroke. Immediately, I got undefined symbols error I described in my first post. At this point, I knew the problem was with CMake. I needed to manipulate the CMakeLists.txt file located under max-sdk/source/basics/myCustomExternal to make it aware of the Carbon framework I was using. This is what ended up working for me...

include(${CMAKE_CURRENT_SOURCE_DIR}/../../max-sdk-base/script/max-pretarget.cmake)
#############################################################
# MAX EXTERNAL
#############################################################
include_directories( 
	"${MAX_SDK_INCLUDES}"
	"${MAX_SDK_MSP_INCLUDES}"
	"${MAX_SDK_JIT_INCLUDES}"
	/Developer/Headers/FlatCarbon
)
FIND_LIBRARY(CARBON_LIBRARY Carbon /System/Library/Frameworks)
MARK_AS_ADVANCED (CARBON_LIBRARY)
SET(EXTRA_LIBS ${CARBON_LIBRARY})
file(GLOB PROJECT_SRC
     "*.h"
	 "*.c"
     "*.cpp"
)
add_library( 
	${PROJECT_NAME} 
	MODULE
	${PROJECT_SRC}
)
target_link_libraries(myCustomExternal(<-your project name) PRIVATE ${EXTRA_LIBS})
include(${CMAKE_CURRENT_SOURCE_DIR}/../../max-sdk-base/script/max-posttarget.cmake)


The way that CMake is implemented for the sdk would take me, a beginner, at least a few days to wrap my head around. I mostly got there by trail and error and using these sources...
https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/platform_dependent_issues/HowToUseExistingOSXFrameworks

https://stackoverflow.com/questions/2908640/how-to-add-a-framework-to-cmake

Mainly the second video in this youtube playlist
https://www.youtube.com/playlist?list=PLalVdRk2RC6o5GHu618ARWh0VO0bFlif4 

Also, the official CMake documentation and ChatGPT gave me a clue at some point. 

Lastly, something that helped me troubleshoot my CMakeLists.txt file was deleting the max-sdk/build folder's contents as I made educated guesses. Then running "cmake -G Xcode .." from the build folder in the terminal and then follow that with "cmake --build ." The first command would usually throw errors if there was something wrong with my CMakeLists.txt.

Overall, I banged my head on this problem for about a week and some of that was definitely my lack of knowledge. However, I think some extra guidance like some common basic CMake manipulations (like adding a framework in my case) would go a long way. Anyway, if this post helps you out with something like this, comment! It would be encouraging to know this helped.

Mac keystrokes using the minDevkit

Ralf Waspe

I am currently trying to make the hello-world example less c# in appearence.
By that I mean a separation of header and source.

However, this is somehow ugly, as nearly all class members (inlets, outlets, attribute, arguments ….) have a list of strings as arguments for the help, which can not be set post construction.

Furthermore, the constructors of classes such as a message do not accept a pointer to a member function of the class containing the message. Instead I must put a long std::bind to a member function into the constructor as well. (as a workaround I have written some templates for that)

What are the reason behind these design choices and would fixes to these issues to the min-devkit be welcome?

I am currently trying to make the hello-world example less c# in appearence.
By that I mean a separation of header and source.
However, ... 

min-devkit-api-message-callback-functions

min-devkit api / message callback functions

Luigi Castelli

I am using the function saveasdialog_extended() to give the user the choice to save two different types of image files. (PNG or JPEG)
Here is the relevant code snippet:

void myobj_do_image_save(t_myobj *x, t_symbol *msg, long argc, t_atom *argv)
{
    t_symbol *sym;
    char name[MAX_FILENAME_CHARS];
    t_filepath path = 0;
    t_fourcc type = 0;
    t_fourcc typelist[2] = { FOUR_CHAR_CODE('PNG '), FOUR_CHAR_CODE('JPEG') };
    short typecount = 2;
    t_max_err err;
  
    if (argc && argv) {
        if (atom_gettype(argv) == A_SYM) {
            sym = atom_getsym(argv);
            strncpy_zero(name, sym->s_name, MAX_FILENAME_CHARS);
        } else {
            strncpy_zero(name, “untitled.png”, MAX_FILENAME_CHARS);
        }
    } else {
        strncpy_zero(name, “untitled.png”, MAX_FILENAME_CHARS);
    }
    err = saveasdialog_extended(name, &path, &type, typelist, typecount);
    if (err == MAX_ERR_NONE) {
        post("name: %s, path: %d, type: %d”, name, path, type);
    } else {
        post(“user cancelled…”);
    }
}

I am using the latest Max SDK 7.3.3 and I am noticing some unexpected behavior in the function saveasdialog_extended() as prototyped in ext_proto.h.
In my code the ‘type’ argument doesn’t seem to return the type of file chosen by the user.
I get the file name and the path ID correctly, but - no matter what I try - the function always returns a zero for the type argument.
Can someone double check that?
How is it possible to distinguish what file type has the user selected in the dialog box?

Any help is highly appreciated.
Thank you.

Hello there,
I am using the function saveasdialog_extended() to give the user the choice to save two different types of image files. (PNG or

save-as-dialog-box-with-multiple-file-choice

Below is the code used for writing Dictionaries in the dict object as either YAML or JSON.

char 			filename[MAX_PATH_CHARS];
	short 			path = 0;
	t_fourcc 		types[3] = {'DICT', 'JSON', 'YAML'};
	t_fourcc		outtype = 0;
	t_max_err		err;

	filename[0] = 0;

	if (!userpath || !userpath->s_name[0]) {
		saveas_promptset("Export as file...");

		err = saveasdialog_extended(filename, &path, &outtype, types, 3);
		if (err)		// User Cancelled
			return err;
	}
	else {
		strncpy_zero(filename, userpath->s_name, MAX_PATH_CHARS);
	}

	dictobj_enforce_filesuffix(filename, MAX_PATH_CHARS, &outtype);

	if (outtype == 'YAML')
		err = dictionary_write_yaml(x->m_dictionary, filename, path);
	else
		err = dictionary_write(x->m_dictionary, filename, path);

thanks for your help. I am finally getting somewhere...
Could you please post the code for the dictobj_enforce_filesuffix() function.
It doesn't seem to be declared/defined anywhere in the SDK.

It's not very exciting :-) but here it is:

void dictobj_enforce_filesuffix(char *filename, long maxlen, t_fourcc *type)
{
	char *c;
	char has_json_extension = false;
	char has_yaml_extension = false;

	c = strrchr(filename, '.');
	if (c) {
		if (!strcmp(c, ".json"))
			has_json_extension = true;
		else if (!strcmp(c, ".yaml"))
			has_yaml_extension = true;
		else if (!strcmp(c, ".yml"))
			has_yaml_extension = true;
	}
	if (*type == 'JSON' && !has_json_extension)
		strncat_zero(filename, ".json", maxlen);
	else if (*type == 'YAML' && !has_yaml_extension)
		strncat_zero(filename, ".yaml", maxlen);
	else if (*type == 0) {
		if (!has_yaml_extension && !has_json_extension) {
			*type = 'JSON';
			strncat_zero(filename, ".json", maxlen);
		}
		else if (has_yaml_extension)
			*type = 'YAML';
		else if (has_json_extension)
			*type = 'JSON';
	}
}

Hello Luigi! Did you implemented the code and does it work as expected? I also tried it but had no luck :-( Maybe you can post your code snippet? Thank you so much for your help!

Save As dialog box with multiple file choice

jason@seeinginvideo.com

I have an application that I developed that is only affecting some Windows 10 users but not all of them. The application would open then immediately shut down. I saw in the event viewer that it produced an Application Error 1000, Fault Type 4 error when this happens. I looked up some information and did several steps, including SFC, clean booting, reinstalling .NET Framework, etc. None of that worked. Then randomly out of habit I defragmented my drive and suddenly the application now opens. It still produces an Application Error 1000, but type 5 this time. It does not affect the application performance whatsoever.

My question is this: Why? And what can I do to ensure this does not happen for users of this application? So far I am guessing that it has to do with ASLR. Are the standalone applications compiled with the /DYNAMICBASE flag? If this is the case, then is there a workaround for the specific standalone?

I am posting the actual error details below.

Fault 4 error cycle:  Fault bucket 1923725877593378771, type 4 
Event Name: APPCRASH Response: Not available Cab Id: 0  Problem signature:
P1: Interstream_Windows.exe
P2: 8.0.8.58005
P3: 5d44b1d2
P4: Interstream_Windows.exe
P5: 8.0.8.58005 
P6: 5d44b1d2 
P7: c0000005 
P8: 000000000090a90f 
P9:  
P10:   
Analysis symbol:  Rechecking for solution: 0
Report Id: e67385ca-22aa-4211-9cf4-ed3fc989c5e1 
Report Status: 268435456 Hashed bucket: c712bd3c5c6c3c2d6ab2727e4b2e0fd3 Cab Guid: 0   

Faulting application name: Interstream_Windows.exe, version: 8.0.8.58005, time stamp: 0x5d44b1d2 
Faulting module name: Interstream_Windows.exe, version: 8.0.8.58005, time stamp: 0x5d44b1d2 
Exception code: 0xc0000005 Fault offset: 0x000000000090a90f
Faulting process id: 0x58dc 
Faulting application start time: 0x01d9213ffe2c75f1 
Faulting application path: C:\Users\jbernagozzi\Desktop\Interstream_Windows\Interstream_Windows.exe 
Faulting module path: C:\Users\jbernagozzi\Desktop\Interstream_Windows\Interstream_Windows.exe Report Id: e67385ca-22aa-4211-9cf4-ed3fc989c5e1 
Faulting package full name:  Faulting package-relative application ID:    

Fault 5 is different, here is this code:    

Fault bucket 1733984756823260336, type 5 Event 
Name: BEX64 Response: Not available Cab Id: 0  Problem signature: 
P1: Interstream_Windows.exe 
P2: 8.0.8.58005 
P3: 5d44b1d2
P4: ucrtbase.dll 
P5: 10.0.18362.1110 
P6: b4cacc38
P7: 000000000006dace
P8: c0000409
P9: 0000000000000007
P10:   
Analysis symbol:  Rechecking for solution:
Report Id: 5c9cea6d-60d0-4b5f-ad90-99be23184f85
Report Status: 268435456 Hashed bucket: 66ccab7de70f21c6181059f304647cb0 


Faulting application name: Interstream_Windows.exe, version: 8.0.8.58005, time stamp: 0x5d44b1d2
Faulting module name: ucrtbase.dll, version: 10.0.18362.1110, time stamp: 0xb4cacc3
Exception code: 0xc0000409 Fault offset: 0x000000000006dace 
Faulting process id: 0x1678 Faulting application start time: 0x01d9216b9f3abbe8 
Faulting application path: C:\Users\jbernagozzi\Desktop\Interstream_Windows\Interstream_Windows.exe 
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll 
Report Id: 5c9cea6d-60d0-4b5f-ad90-99be23184f85 
Faulting package full name:  Faulting package-relative application ID:

I have an application that I developed that is only affecting some Windows 10 users but not all of them. 

standalone-memory-crashing-in-windows-10

max installs several dlls  into system, also ucrtbase.dll



Maybe your users are mising it, have incompatible version, who knows ...

I allway bundle all dlls that max usually installs into standalone
and don't  even install max at all but rather extract it using msiexec,
and place dlls next to exe file.
like this


that keeps me out of trouble when using different versions of max,
and makes sure standalones get their versions of needed dlls
when distributed.


That's super interesting. Just to be clear, you do not install Max as normal using windows installer and extract it using msiexec? 

Just curious, the application I created has an external that uses specialized .dll's for processing, but it seems to only work in windows on Max version 8.0.8 (its fine on Mac). Could it be that for whatever reason the .dll's are just out of date?

I can not say anything without knowing details.

Sometimes also windows versions behave differently
home - pro or enterprise ...

and yes, I never install Max.
I have many Max versions on PC
to be able to apply updates to  standalone apps which 
have been compiled over years using different max versions.

I don't want surprises when using older code or have to check
which  objects changed their behaviour in the meantime.


I have tried the above suggestion and it is still an issue. However I do have some more insight, one other question, if you don't mind?

So we produce a series of apps all done in Max. The common denominator for this app having issues is not the app itself. When people open it for the first time, it works. But if they open another one of our apps and then this one, then it crashes before opening like described above. I wonder if that has to do with memory registry? Is there a way to differentiate this within multiple max standalones? I think this might be the key to the problem, but nothing I have searched for has yielded results.

Thanks for being so generous with your suggestions

I have no problem using several Max Standalones on windows,
even different generations - from max 4 till 8 and also keep them running at same time.

But I allways set own preferences file and info for each app.

That crashing I guess is caused by stuff that your standalones execute.


Standalone Memory Crashing in Windows 10

PETE KELLOCK

I’m trying write an external that has multiple voices, each voice driven by an ITM time object. I want each voice, 0 to NVOICES-1, to run independently of the others. I’m working from the info on ITM in Chapter 18 of the Max API doc, and adapting the delay2 code example that’s shipped with the Max sdk.

I’m able to create an array of time objects, one per voice, declaring it in the master structure of the external (called reA) as:
t_object *d_timeObj[NVOICES];

…and I can declare the callback function:
void reA_doOne(t_reA *x);

I’m then able to instantiate these giving a single callback function reA_doOne() as follows:
for (voiceNo=NVOICES-1; voiceNo>=0; voiceNo--)  {
x->d_timeObj[voiceNo] = (t_object *) time_new((t_object *)x, gensym("delaytime"), (method)reA_doOne, TIME_FLAGS_TICKSONLY | TIME_FLAGS_USECLOCK);
}

That all compiles and runs, but it’s not quite enough. When reA_doOne() gets called, it doesn’t know which time object in the array (ie which voice ) is calling it.  Hmm.

So I tried the following...
Declaration:  
void reA_doOne(t_reA *x, long voiceNo);

Instantiation of the time object:
for (voiceNo=NVOICES-1; voiceNo>=0; voiceNo--)  {
x->d_timeObj[voiceNo] = (t_object *) time_new((t_object *)x, gensym("delaytime"), (method)reA_doOne(*x, voiceNo), TIME_FLAGS_TICKSONLY | TIME_FLAGS_USECLOCK);
}

But that fails.  It seems, not too surprisingly, that the time_new() function will only accept a method name reA-doOne; it won’t accept adding arguments to that method in the call. The compiler error I get is:
Semantic Issue Group
Passing 't_reA' (aka 'struct reA') to parameter of incompatible type 't_reA *' (aka 'struct reA *'); remove *
Passing argument to parameter 'x' here

I’ve tried lots of variants of this, but haven’t found a way yet. 
Again, all ll I need is that when the reA_doOne() function gets called, I know which timeObject in the array of time objects (ie which voice) called it. 

My fallback is to create a slew of explicitly-named functions, one for each voice, reA_doOne00(), reA_doOne01(), reA_doOne02() etc, each set up as the callback function for one timeObject. But that's ugly and doesn't allow the number of voices to be changed easily.

I’m trying write an external that has multiple voices, each voice driven by an ITM time object. I want each voice, 0 to NVOICES-1, to run in

max-sdk-t-timeobject-–-creating-a-callback-function-that-includes-a-voice-number

Max SDK t-timeobject – creating a callback function that includes a voice number

sadguitarius

Hi, just wanted to say that for anyone who is interested, I have a fork of max-sdk-base with a fix for some errors that were popping up in min-devkit projects using Clion on Windows. Previously, my projects would compile fine, but there would be a bunch of errors relating to macros in the ext_preprocessor.h file that made Clion's code analysis pretty useless. I also added a check for Ninja build in the cmake files and it seems to be compiling fine with the default Clion settings. Please check it out here. 

I'm relatively new to Windows development, so I was basically hacking away at the preprocessor options until the errors went away. I'd like to know if this is breaking something for anyone, and also if any devs have suggestions for how to do this better. I'm happy to submit a pull request if this is actually helpful for people.

Hi, just wanted to say that for anyone who is interested, I have a fork of max-sdk-base with a fix for some errors that were popping up in m

fix-for-max-sdk-base-and-clion-on-windows

Fix for max-sdk-base and Clion on Windows

Etienne

Hi !
I'm working on an old music piece that needs some externals from Eric Lyon's potpourri.
But all I could find online is 32bits only : I know the sources are available at https://github.com/ericlyon/LyonPotpourri3.0-MaxMSP but I don't know how to compile objects

Does anyone know where to find a 64 bits version of these externals ? Especially el.bashfest el.samm and el.mask
Or we could pay someone to compile it : please tell me if you're interested in this ...

Thanks, 
Etienne


Hi !
I'm working on an old music piece that needs some externals from Eric Lyon's potpourri.
But all I could find online is 32bits only : I 

eric-lyon's-potpourri-3-0

https://disis.music.vt.edu/eric/main/lyonpotpourri/

even arm version is compiled ...
scroll to the page bottom


Eric Lyon's potpourri 3.0

Do the changes in the 8.2 SDK also explain why externals compiled in previous versions don't work in Max 8.2 onwards? I have an external that was working fine in 8.1 and the moment I updated to 8.2 it stopped working.

I'm trying to determine whether I need to re-compile this external with the 8.2 SDK in order to continue using it in Max 8.2 (even if I'm still on Catalina or Big Sur) ?

For context, it's the old Fingerpinger external for use with the Apple trackpad and it makes use of the Apple MultitouchSupport.framework (/System/Library/PrivateFrameworks/MultitouchSupport.framework/)

https://www.anyma.ch/2009/research/multitouch-external-for-maxmsp/

latest source (not linked on site):  http://www.anyma.ch/software/fingerpinger2017_08_17_source.zip

Do the changes in the 8.2 SDK also explain why externals compiled in previous versions don't work in Max 8.2 onwards? I have an external tha

need-to-re-compile-external-with-8-2-sdk-to-use-in-max-8-2-onwards

Need to Re-Compile External with 8.2 SDK to Use in Max 8.2 Onwards?

benedikt.sailer

Hey everyone,  does anyone have a quick idea why my min external would crash, once I add the mousewheel message to my class?  

   c74::min::message<> mousewheel { this, "mousewheel",
        MIN_FUNCTION {
            return {};
        }
    };

These are the last callstack entries on the crash, so as you can see it crashes in c74::min::wrapper_method_generic (), which is right before the callback on my message object should get called:  

Thread 0 Crashed:: CrBrowserMain  Dispatch queue: com.apple.main-thread

0   com.cycling74.myexternal      0x0000000131966ff0 void c74::min::wrapper_method_generic<myexternal>(c74::max::object*, c74::max::symbol const*, long, c74::max::atom const*) + 288 (c74_min_object_wrapper.h:365)

1   com.cycling74.Max           0x000000010ba04371 BoxComponent::sendMouseWheelMessage(juce::MouseEvent const&, double, double) + 401

2   com.cycling74.Max           0x000000010c046cda juce::Component::internalMouseWheel(juce::MouseInputSource, juce::Point<float>, juce::Time, juce::MouseWheelDetails const&) + 346

 All other mouse messages work just fine, only mousewheel instantly crashes the external once it's called.

Is there a trick to using the mousewheel message that's not obvious?

//Edit: I tried just adding the mousewheel message to the min.meter~ example project. Same result, it just immediately crashes the min.meter~ external, once it's called. 



Hey everyone,  does anyone have a quick idea why my min external would crash, once I add the mousewheel message to my class?  
   c74::min::

mousewheel-message-crashing

So, after a lot of help from the community on Discord, it turned out, that the mousewheel message was just not implemented. 

So I've done it. 

And created a PR for it here:
https://github.com/Cycling74/min-api/pull/193 

No idea if that makes it into min, but it's working on my end, so if you need it, there you go :)

mousewheel message crashing

dyzid

I am currently trying to make my custom attribute remember its state, on saving the patch. None of my attributes are being saved at the moment. I am comparing my code to the min.meter_tilde example, and I can't find any difference in how I setup the attribute.
I read about the "value" name, but as I understood this is meant specifically to make the attribute visible to pattr and similar systems, am I right? (Also the meter_tilde example is not using it, so that's how I figured)

I even copy/pasted attributes from the min.meter_tilde example (for example m_range) into my code, and also then it doesn't save. So it seems I need to setup something else to get that to work? I hope someone could shed some light on this topic.

EDIT:
So, after bastardising the min.meter_tilde example a bit, I learned that as soon as I remove  the ui_operator<> inheritance from the min_meter class, it doesn't save arguments anymore. So is this somehow managing that in the background?
Also, I don't need custom UI, so that is probably not the best way to deal with it. What is the intended way to save attributes then?

Thanks :) 

Hey all,
I am currently trying to make my custom attribute remember its state, on saving the patch. None of my attributes are being saved at

Cycling '74 Forums

Following up on my own post, here's what I did to accomplish the task for those in the future.

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So, after a lot of help from the community on Discord, it turned out, that the mousewheel message was just not implemented.

Hey all, I am currently trying to make my custom attribute remember its state, on saving the patch.