gtk编程中标签控件设置了gtk_label_set_line_wrap(GTK_LABEL(label),TRUE);为啥也不能自动换行呢？

Posted 2023-05-06

参考技术A 请上传完整的源代码！！

参考资料：http://www.92linux.tk

参考技术B 代码不完整无法判断

参考资料：http://www.bailangcn.tk/tb.php?sc=ca20db&id=6

swift中标签的页面控制

【中文标题】swift中标签的页面控制

【英文标题】：Pagecontrol for label in swift

【发布时间】：2017-05-27 12:27:37

【问题描述】：

我有视图控制器，它在带有滚动视图的标签中显示一些文本，但我想为该标签创建一个页面控件，这意味着带有页面控件的标签中的不同文本。我有以下标签代码。

导入基础 导入 UIKit

 class tips : UIViewController 



@IBOutlet weak var tipsscroll: UIScrollView!

@IBOutlet weak var solutionlabel: UILabel!
override func viewDidLoad() 
    super.viewDidLoad()



    solutionlabel.text = "Some text"

    solutionlabel.numberOfLines = 0
    solutionlabel.lineBreakMode = NSLineBreakMode.byWordWrapping
   // solutionlabel.font = UIFont(name:"HelveticaNeue-Bold", size: 14.0)

提前致谢。

【参考方案1】：

为页面控制器和滚动视图创建 IBOutlet

@IBOutlet weak var pageController: UIPageControl!
@IBOutlet weak var ScrollController: UIScrollView!

创建一个数组

 let pageString = ["showsHorizontalScrollIndicator working pagecontroller", "running christmas card contact in ", "from the application you can back the Address"]

为滚动视图创建委托方法 UIScrollViewDelegate 和方法

class ViewController: UIViewController, UIScrollViewDelegate 

函数和委托方法

// MARK:- Page Controller

func loadScrollView() 
    let pageCount : CGFloat = CGFloat(pageString.count)

    ScrollController.backgroundColor = UIColor.clear
    ScrollController.delegate = self
    ScrollController.isPagingEnabled = true
    ScrollController.contentSize = CGSize(width: ScrollController.frame.size.width * pageCount, height: ScrollController.frame.size.height)
    ScrollController.showsHorizontalScrollIndicator = false
    ScrollController.alwaysBounceVertical = false

    pageController.numberOfPages = Int(pageCount)
    pageController.addTarget(self, action: #selector(self.pageChanged), for: .valueChanged)

    for i in 0..<Int(pageCount) 
        print(self.ScrollController.frame.size.width)

        let textView = UILabel(frame: CGRect(x: self.ScrollController.frame.size.width * CGFloat(i), y: 0, width: ScreenWidth - 30 , height: 30))
        textView.text = pageString[i]
        textView.numberOfLines = 0
        textView.textColor = UIColor.white
        textView.textAlignment = .center
        self.ScrollController.addSubview(textView)
    



//MARK: UIScrollView Delegate
func scrollViewDidScroll(_ scrollView: UIScrollView) 
    let viewWidth: CGFloat = scrollView.frame.size.width
    // content offset - tells by how much the scroll view has scrolled.
    let pageNumber = floor((scrollView.contentOffset.x - viewWidth / 50) / viewWidth) + 1
    pageController.currentPage = Int(pageNumber)



//MARK: Page tap action
@objc func pageChanged() 
    let pageNumber = pageController.currentPage
    var frame = ScrollController.frame
    frame.origin.x = frame.size.width * CGFloat(pageNumber)
    frame.origin.y = 0
    ScrollController.scrollRectToVisible(frame, animated: true)

最后在 ViewDidload() 中调用函数

loadScrollView()