How to declare a method used for NSMenuItem with no existing classes?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
I'm trying to create a typical simple macOS menu for my otherwise pure C project and this is the only Objective-C code I have in it, I didn't create any classes or anything:
#import <Cocoa/Cocoa.h>
- (void)method_new_file:(id)sender { new_flag = 1; }
void mac_menu_file_init()
{
NSMenu *currentMenu;
NSMenuItem *menuItem;
currentMenu = [[NSMenu alloc] initWithTitle:@"File"]; // set menu name
[currentMenu addItemWithTitle:@"New..." action:@selector(method_new_file:) keyEquivalent:@"n"];
// Put menu into the menubar and give up our references to the objects
menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
[menuItem setSubmenu:currentMenu];
[[NSApp mainMenu] insertItem:menuItem atIndex:1];
[currentMenu release];
[menuItem release];
}
The problem is obvious, I'm "missing a context for method declaration" for method_new_file, but where do I go from here? I just want that method to be called whenever I click the menu entry, but for that to happen it must be part of something, but what? Based on code and answers I've seen I tried the following:
@interface My_Actions : NSApplication
@end
@implementation My_Actions
- (void)method_new_file:(id)sender { new_flag = 1; }
@end
and other things like it, to no avail, the menu entry remains hopelessly grayed out and I don't know what else to try.
objective-c cocoa sdl-2
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
add a comment |
I'm trying to create a typical simple macOS menu for my otherwise pure C project and this is the only Objective-C code I have in it, I didn't create any classes or anything:
#import <Cocoa/Cocoa.h>
- (void)method_new_file:(id)sender { new_flag = 1; }
void mac_menu_file_init()
{
NSMenu *currentMenu;
NSMenuItem *menuItem;
currentMenu = [[NSMenu alloc] initWithTitle:@"File"]; // set menu name
[currentMenu addItemWithTitle:@"New..." action:@selector(method_new_file:) keyEquivalent:@"n"];
// Put menu into the menubar and give up our references to the objects
menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
[menuItem setSubmenu:currentMenu];
[[NSApp mainMenu] insertItem:menuItem atIndex:1];
[currentMenu release];
[menuItem release];
}
The problem is obvious, I'm "missing a context for method declaration" for method_new_file, but where do I go from here? I just want that method to be called whenever I click the menu entry, but for that to happen it must be part of something, but what? Based on code and answers I've seen I tried the following:
@interface My_Actions : NSApplication
@end
@implementation My_Actions
- (void)method_new_file:(id)sender { new_flag = 1; }
@end
and other things like it, to no avail, the menu entry remains hopelessly grayed out and I don't know what else to try.
objective-c cocoa sdl-2
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
If your code is "otherwise pure C", do you have an application object? Are you running the main event loop? Are you using some C-based GUI wrapper toolkit?
– Ken Thomases
Nov 26 '18 at 20:18
I use SDL2, other than that I didn't define any application object (SDL2 might have). So it's just a typical SDL2 program and at the beginning of the execution I run the function posted above. It seems that this is what SDL2 does in that regard: github.com/spurious/SDL-mirror/blob/…
– Michel Rouzic
Nov 26 '18 at 20:34
why dont u convert the ObjC code to C instead?
– GeneCode
Nov 27 '18 at 0:03
@GeneCode I'd love to but how? Isn't Objective C or Swift required for Cocoa?
– Michel Rouzic
Nov 27 '18 at 0:34
add a comment |
I'm trying to create a typical simple macOS menu for my otherwise pure C project and this is the only Objective-C code I have in it, I didn't create any classes or anything:
#import <Cocoa/Cocoa.h>
- (void)method_new_file:(id)sender { new_flag = 1; }
void mac_menu_file_init()
{
NSMenu *currentMenu;
NSMenuItem *menuItem;
currentMenu = [[NSMenu alloc] initWithTitle:@"File"]; // set menu name
[currentMenu addItemWithTitle:@"New..." action:@selector(method_new_file:) keyEquivalent:@"n"];
// Put menu into the menubar and give up our references to the objects
menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
[menuItem setSubmenu:currentMenu];
[[NSApp mainMenu] insertItem:menuItem atIndex:1];
[currentMenu release];
[menuItem release];
}
The problem is obvious, I'm "missing a context for method declaration" for method_new_file, but where do I go from here? I just want that method to be called whenever I click the menu entry, but for that to happen it must be part of something, but what? Based on code and answers I've seen I tried the following:
@interface My_Actions : NSApplication
@end
@implementation My_Actions
- (void)method_new_file:(id)sender { new_flag = 1; }
@end
and other things like it, to no avail, the menu entry remains hopelessly grayed out and I don't know what else to try.
objective-c cocoa sdl-2
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
I'm trying to create a typical simple macOS menu for my otherwise pure C project and this is the only Objective-C code I have in it, I didn't create any classes or anything:
#import <Cocoa/Cocoa.h>
- (void)method_new_file:(id)sender { new_flag = 1; }
void mac_menu_file_init()
{
NSMenu *currentMenu;
NSMenuItem *menuItem;
currentMenu = [[NSMenu alloc] initWithTitle:@"File"]; // set menu name
[currentMenu addItemWithTitle:@"New..." action:@selector(method_new_file:) keyEquivalent:@"n"];
// Put menu into the menubar and give up our references to the objects
menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
[menuItem setSubmenu:currentMenu];
[[NSApp mainMenu] insertItem:menuItem atIndex:1];
[currentMenu release];
[menuItem release];
}
The problem is obvious, I'm "missing a context for method declaration" for method_new_file, but where do I go from here? I just want that method to be called whenever I click the menu entry, but for that to happen it must be part of something, but what? Based on code and answers I've seen I tried the following:
@interface My_Actions : NSApplication
@end
@implementation My_Actions
- (void)method_new_file:(id)sender { new_flag = 1; }
@end
and other things like it, to no avail, the menu entry remains hopelessly grayed out and I don't know what else to try.
objective-c cocoa sdl-2
objective-c cocoa sdl-2
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
edited Nov 26 '18 at 21:04
Mark Szymczyk
14.3k24455
14.3k24455
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
asked Nov 26 '18 at 19:25
Michel RouzicMichel Rouzic
391218
391218
If your code is "otherwise pure C", do you have an application object? Are you running the main event loop? Are you using some C-based GUI wrapper toolkit?
– Ken Thomases
Nov 26 '18 at 20:18
I use SDL2, other than that I didn't define any application object (SDL2 might have). So it's just a typical SDL2 program and at the beginning of the execution I run the function posted above. It seems that this is what SDL2 does in that regard: github.com/spurious/SDL-mirror/blob/…
– Michel Rouzic
Nov 26 '18 at 20:34
why dont u convert the ObjC code to C instead?
– GeneCode
Nov 27 '18 at 0:03
@GeneCode I'd love to but how? Isn't Objective C or Swift required for Cocoa?
– Michel Rouzic
Nov 27 '18 at 0:34
add a comment |
If your code is "otherwise pure C", do you have an application object? Are you running the main event loop? Are you using some C-based GUI wrapper toolkit?
– Ken Thomases
Nov 26 '18 at 20:18
I use SDL2, other than that I didn't define any application object (SDL2 might have). So it's just a typical SDL2 program and at the beginning of the execution I run the function posted above. It seems that this is what SDL2 does in that regard: github.com/spurious/SDL-mirror/blob/…
– Michel Rouzic
Nov 26 '18 at 20:34
why dont u convert the ObjC code to C instead?
– GeneCode
Nov 27 '18 at 0:03
@GeneCode I'd love to but how? Isn't Objective C or Swift required for Cocoa?
– Michel Rouzic
Nov 27 '18 at 0:34
If your code is "otherwise pure C", do you have an application object? Are you running the main event loop? Are you using some C-based GUI wrapper toolkit?
– Ken Thomases
Nov 26 '18 at 20:18
If your code is "otherwise pure C", do you have an application object? Are you running the main event loop? Are you using some C-based GUI wrapper toolkit?
– Ken Thomases
Nov 26 '18 at 20:18
I use SDL2, other than that I didn't define any application object (SDL2 might have). So it's just a typical SDL2 program and at the beginning of the execution I run the function posted above. It seems that this is what SDL2 does in that regard: github.com/spurious/SDL-mirror/blob/…
– Michel Rouzic
Nov 26 '18 at 20:34
I use SDL2, other than that I didn't define any application object (SDL2 might have). So it's just a typical SDL2 program and at the beginning of the execution I run the function posted above. It seems that this is what SDL2 does in that regard: github.com/spurious/SDL-mirror/blob/…
– Michel Rouzic
Nov 26 '18 at 20:34
why dont u convert the ObjC code to C instead?
– GeneCode
Nov 27 '18 at 0:03
why dont u convert the ObjC code to C instead?
– GeneCode
Nov 27 '18 at 0:03
@GeneCode I'd love to but how? Isn't Objective C or Swift required for Cocoa?
– Michel Rouzic
Nov 27 '18 at 0:34
@GeneCode I'd love to but how? Isn't Objective C or Swift required for Cocoa?
– Michel Rouzic
Nov 27 '18 at 0:34
add a comment |
1 Answer
1
active
oldest
votes
Well, I would hope that SDL2 would provide a mechanism for adding menu items.
If it doesn't, you need an object to target with your menu item. In Objective-C, classes are also objects (instances of their meta-class) and they're conveniently static in lifetime. So, you could so something like:
@interface MyMenuTarget : NSObject
@end
@implementation MyMenuTarget
+ (void) openNewFile:(id)sender
{
new_flag = 1;
}
@end
Notice the + on the method declaration. That means the method is a class method, not an instance method. But a class method is just a method of the class object (compared to an instance method which is a method of an instance of the class).
And then, where you create the menu item, you should set the target to this class:
menuItem = [currentMenu addItemWithTitle:@"New..." action:@selector(openNewFile:) keyEquivalent:@"n"];
menuItem.target = [MyMenuTarget class];
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53487753%2fhow-to-declare-a-method-used-for-nsmenuitem-with-no-existing-classes%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Well, I would hope that SDL2 would provide a mechanism for adding menu items.
If it doesn't, you need an object to target with your menu item. In Objective-C, classes are also objects (instances of their meta-class) and they're conveniently static in lifetime. So, you could so something like:
@interface MyMenuTarget : NSObject
@end
@implementation MyMenuTarget
+ (void) openNewFile:(id)sender
{
new_flag = 1;
}
@end
Notice the + on the method declaration. That means the method is a class method, not an instance method. But a class method is just a method of the class object (compared to an instance method which is a method of an instance of the class).
And then, where you create the menu item, you should set the target to this class:
menuItem = [currentMenu addItemWithTitle:@"New..." action:@selector(openNewFile:) keyEquivalent:@"n"];
menuItem.target = [MyMenuTarget class];
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
add a comment |
Well, I would hope that SDL2 would provide a mechanism for adding menu items.
If it doesn't, you need an object to target with your menu item. In Objective-C, classes are also objects (instances of their meta-class) and they're conveniently static in lifetime. So, you could so something like:
@interface MyMenuTarget : NSObject
@end
@implementation MyMenuTarget
+ (void) openNewFile:(id)sender
{
new_flag = 1;
}
@end
Notice the + on the method declaration. That means the method is a class method, not an instance method. But a class method is just a method of the class object (compared to an instance method which is a method of an instance of the class).
And then, where you create the menu item, you should set the target to this class:
menuItem = [currentMenu addItemWithTitle:@"New..." action:@selector(openNewFile:) keyEquivalent:@"n"];
menuItem.target = [MyMenuTarget class];
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
add a comment |
Well, I would hope that SDL2 would provide a mechanism for adding menu items.
If it doesn't, you need an object to target with your menu item. In Objective-C, classes are also objects (instances of their meta-class) and they're conveniently static in lifetime. So, you could so something like:
@interface MyMenuTarget : NSObject
@end
@implementation MyMenuTarget
+ (void) openNewFile:(id)sender
{
new_flag = 1;
}
@end
Notice the + on the method declaration. That means the method is a class method, not an instance method. But a class method is just a method of the class object (compared to an instance method which is a method of an instance of the class).
And then, where you create the menu item, you should set the target to this class:
menuItem = [currentMenu addItemWithTitle:@"New..." action:@selector(openNewFile:) keyEquivalent:@"n"];
menuItem.target = [MyMenuTarget class];
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
Well, I would hope that SDL2 would provide a mechanism for adding menu items.
If it doesn't, you need an object to target with your menu item. In Objective-C, classes are also objects (instances of their meta-class) and they're conveniently static in lifetime. So, you could so something like:
@interface MyMenuTarget : NSObject
@end
@implementation MyMenuTarget
+ (void) openNewFile:(id)sender
{
new_flag = 1;
}
@end
Notice the + on the method declaration. That means the method is a class method, not an instance method. But a class method is just a method of the class object (compared to an instance method which is a method of an instance of the class).
And then, where you create the menu item, you should set the target to this class:
menuItem = [currentMenu addItemWithTitle:@"New..." action:@selector(openNewFile:) keyEquivalent:@"n"];
menuItem.target = [MyMenuTarget class];
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
answered Nov 26 '18 at 22:18
Ken ThomasesKen Thomases
71.8k673110
71.8k673110
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
add a comment |
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
Thank you, it works! And sadly no, SDL provides no way of creating menus, which seems like a rather big oversight.
– Michel Rouzic
Nov 27 '18 at 7:55
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53487753%2fhow-to-declare-a-method-used-for-nsmenuitem-with-no-existing-classes%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
If your code is "otherwise pure C", do you have an application object? Are you running the main event loop? Are you using some C-based GUI wrapper toolkit?
– Ken Thomases
Nov 26 '18 at 20:18
I use SDL2, other than that I didn't define any application object (SDL2 might have). So it's just a typical SDL2 program and at the beginning of the execution I run the function posted above. It seems that this is what SDL2 does in that regard: github.com/spurious/SDL-mirror/blob/…
– Michel Rouzic
Nov 26 '18 at 20:34
why dont u convert the ObjC code to C instead?
– GeneCode
Nov 27 '18 at 0:03
@GeneCode I'd love to but how? Isn't Objective C or Swift required for Cocoa?
– Michel Rouzic
Nov 27 '18 at 0:34