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Setting NSView readonly-property tag on subclass


Setting NSView readonly-property tag on subclass

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Setting NSView readonly-property tag on subclass
Tag : macos , By : Anonymous
Date : December 01 2020, 05:00 PM

Hope that helps I think the issue you're hitting is that _tag doesn't exist in the context where you're trying to set it, but if you use @synthesize like this:
#import <Cocoa/Cocoa.h>

@interface SOView : NSView

@property (readwrite) NSInteger tag;

@end


@implementation SOView

@synthesize tag = _tag;

- (void)awakeFromNib
{
    self.tag = 25;
}

@end

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Overriding ReadOnly Property in a subclass to make it Read/Write (VB.NET or C#)


Tag : chash , By : user104292
Date : March 29 2020, 07:55 AM
Hope this helps Given what you're trying to accomplish, and with the sample code you posted, VB.NET will not let you do this.
Ordinarily, you can declare a property in VB.NET like so:
Public Class qwqwqw
  Public Property xyz() As String
      Get
          Return ""
      End Get
      Private Set(ByVal value As String)
          '
      End Set
  End Property
End Class
Public MustInherit Class Parent
  Public MustOverride Property Foo() As String
End Class

Public Class ReadOnlyChild
  Inherits Parent

  Public Overrides Property Foo() As String
    Get
        '
    End Get
    Private Set(ByVal value As String)
        '
    End Set
  End Property
End Class
Public MustInherit Class Parent
  Protected MustOverride Property Foo() As String       
End Class

Public Class ReadOnlyChild
  Inherits Parent

  Protected Overrides Property Foo() As String
      Public Get
          '
      End Get
      Set(ByVal value As String)
          '
      End Set
  End Property
End Class

The Autosizing property setting for NSView is missing


Tag : xcode , By : Feroz
Date : March 29 2020, 07:55 AM
To fix this issue Seaid's solution works. but i think it's bug because the auto sizing tool will apear about half a second when switching to another inspector.
Xcode 4 interface-builder problems

Setting ReadOnly Property in PropertyGrid Sets All Properties Readonly


Tag : .net , By : Tim Coffman
Date : March 29 2020, 07:55 AM
wish of those help Try decorating ALL of your class properties with the ReadOnly attribute:
<[ReadOnly](False)> _
Public Property SomeProperty As Boolean
  Get
    Return _someProperty
  End Get
  Set(value As Boolean)
    _someProperty = value
    If value Then
      SetReadOnlyProperty("SerialPortNum", True)
      SetReadOnlyProperty("IPAddress", False)
    Else
      SetReadOnlyProperty("SerialPortNum", False)
      SetReadOnlyProperty("IPAddress", True)
    End If
  End Set
End Property

<[ReadOnly](False)> _
Public Property IPAddress As String = "0.0.0.0"

<[ReadOnly](False)> _
Public Property SerialPortNum As Integer = 0

Overriding a readonly property in subclass


Tag : objective-c , By : user93312
Date : March 29 2020, 07:55 AM
Any of those help For a readonly property, only a getter method is synthesized, but no setter method.
And when compiling the subclass, the compiler does not know how the property is realized in the base class (it could be a custom getter instead of a backing instance variable). So it cannot just create a setter method in the subclass.
@interface Base : NSObject {
@protected
    NSString *_something;
}
@property (strong, readonly) NSString *something;
- (id)initWithSomething:(NSString *)something;
@end
@interface Sub : Base
@property (strong, readwrite) NSString *something;
@end
@implementation Sub
-(void)setSomething:(NSString *)something
{
    _something = something;
}
@end
@synthesize something = _something;
@synthesize something = _somethingElse;

How to move or resize an NSView by setting the frame property?


Tag : swift , By : Morbo
Date : March 29 2020, 07:55 AM
Hope that helps The autolayout system is the culprit here. When you set the frame, the autolayout system overrides that to re-establish the implicit constraints set in the storyboard.
Set the translatesAutoresizingMaskIntoConstraints property of the label to true. This tells the autolayout system that it should create a new set of autolayout constraints that satisfy the new frame you've set:
class ViewController: NSViewController {

    @IBOutlet var label: NSTextField!

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        label.frame = NSRect(x: 0, y: 0, width: 200, height: 17)
        label.translatesAutoresizingMaskIntoConstraints = true
        label.setNeedsDisplay()
    }
}
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