如何将 NSTextField 值转换为 CGFloat

Question

let countY = CGFloat(self.textbox1.stringValue); //NSTextField value= 1024.231234
if let image:CGImage = CGDisplayCreateImage(CGMainDisplayID(), rect: CGRect(x: countX, y: countY, width: 1, height: 1))
        {

我得到了错误

Expression type '@lvalue String' is ambiguous without more context Thanks

Answer 1

CGFloat 没有字符串初始值设定项。

只需从文本字段中获取 doubleValue 而不是 stringValue

let countY = CGFloat(self.textbox1.doubleValue)
if let image = CGDisplayCreateImage(CGMainDisplayID(), rect: CGRect(x: countX, y: countY, width: 1, height: 1)) {

}

如何将 NSTextField 值转换为 CGFloat

How to convert NSTextField value to CGFloat

cocoa

swift