Minimal Cocoa application - problem with menu

Question

mirek_cxl OP

Created Oct ’18

Replies 1

Boosts 0

Views 1.5k

Participants 2

I need to implement minimal Cocoa application without Xcode. I am trying this example:

https://www.cocoawithlove.com/2010/09/minimalist-cocoa-programming.html

#import <Cocoa/Cocoa.h>int main(){  [NSAutoreleasePool new];  [NSApplication sharedApplication];  [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];  id menubar = [[NSMenu new] autorelease];  id appMenuItem = [[NSMenuItem new] autorelease];  [menubar addItem:appMenuItem];  [NSApp setMainMenu:menubar];  id appMenu = [[NSMenu new] autorelease];  id appName = [[NSProcessInfo processInfo] processName];  id quitTitle = [@"Quit " stringByAppendingString:appName];  id quitMenuItem = [[[NSMenuItem alloc] initWithTitle:quitTitle  action:@selector(terminate:) keyEquivalent:@"q"] autorelease];  [appMenu addItem:quitMenuItem];  [appMenuItem setSubmenu:appMenu];  id window = [[[NSWindow alloc] initWithContentRect:NSMakeRect(10, 10, 200, 200)  styleMask:NSTitledWindowMask backing:NSBackingStoreBuffered defer:NO]  autorelease];  [window setTitle:appName];  [window makeKeyAndOrderFront:nil];  [NSApp activateIgnoringOtherApps:YES];  [NSApp run];  return 0;}

It works well, except for one little problem: Immediately after the launch, menu is altered, but is inactive (clicking it does nothing). If I select some other application and then get back to that minimal one, menu starts working as expected.

Any idea how to fix this?

Boost

Answer 1

hkatsura OP

Sep ’21

looks like NSApplicationActivationPolicyRegular and activateIgnoringOtherApps: were missing according to https://github.com/rgl/minimal-cocoa-app

     [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
 
    dispatch_async(dispatch_get_main_queue(), ^{
        [NSApp activateIgnoringOtherApps:YES];
    });

here is the updated code:

 // cc -o min-cocoa min-cocoa.m -framework Cocoa
#import <Cocoa/Cocoa.h>
 
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        [NSApplication sharedApplication];
        id menubar = [NSMenu new];
        id appMenuItem = [NSMenuItem new];
        [menubar addItem:appMenuItem];
        [NSApp setMainMenu:menubar];
        id appMenu = [NSMenu new];
        id appName = [[NSProcessInfo processInfo] processName];
        id quitTitle = [@"Quit " stringByAppendingString:appName];
        id quitMenuItem = [[NSMenuItem alloc] initWithTitle:quitTitle action:@selector(terminate:) keyEquivalent:@"q"] ;
        [appMenu addItem:quitMenuItem];
        [appMenuItem setSubmenu:appMenu];
        id window = [[NSWindow alloc] initWithContentRect:NSMakeRect(10, 10, 200, 200) styleMask:NSWindowStyleMaskTitled backing:NSBackingStoreBuffered defer:NO];
        [window setTitle:appName];
        [window cascadeTopLeftFromPoint:NSMakePoint(20,20)];
        [window makeKeyAndOrderFront:nil];
 
        [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
 
        dispatch_async(dispatch_get_main_queue(), ^{
            [NSApp activateIgnoringOtherApps:YES];
        });
 
        [NSApp run];
    }
    return 0;
}

0

	[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];

	dispatch_async(dispatch_get_main_queue(), ^{
	[NSApp activateIgnoringOtherApps:YES];
	});

	// cc -o min-cocoa min-cocoa.m -framework Cocoa
	#import <Cocoa/Cocoa.h>

	int main(int argc, const char * argv[]) {
	@autoreleasepool {
	[NSApplication sharedApplication];
	id menubar = [NSMenu new];
	id appMenuItem = [NSMenuItem new];
	[menubar addItem:appMenuItem];
	[NSApp setMainMenu:menubar];
	id appMenu = [NSMenu new];
	id appName = [[NSProcessInfo processInfo] processName];
	id quitTitle = [@"Quit " stringByAppendingString:appName];
	id quitMenuItem = [[NSMenuItem alloc] initWithTitle:quitTitle action:@selector(terminate:) keyEquivalent:@"q"] ;
	[appMenu addItem:quitMenuItem];
	[appMenuItem setSubmenu:appMenu];
	id window = [[NSWindow alloc] initWithContentRect:NSMakeRect(10, 10, 200, 200) styleMask:NSWindowStyleMaskTitled backing:NSBackingStoreBuffered defer:NO];
	[window setTitle:appName];
	[window cascadeTopLeftFromPoint:NSMakePoint(20,20)];
	[window makeKeyAndOrderFront:nil];

	[NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];

	dispatch_async(dispatch_get_main_queue(), ^{
	[NSApp activateIgnoringOtherApps:YES];
	});

	[NSApp run];
	}
	return 0;
	}