如何在目标C中获取随机unicode字符

I was wondering how to get a random Unicode character so that every time this is run it generates a different value. This is what I have so far to get a character:

我想知道如何获得一个随机的Unicode字符,这样每次运行它都会生成一个不同的值。这是我到目前为止得到一个角色:

    NSFont *arialUnicode = [[NSFontManager sharedFontManager] 
    fontWithFamily:@"Arial Unicode MS"
    traits:0 
    weight:5 
    size:dirtyRect.size.height*0.6];

    NSGlyph *glyphs = (NSGlyph *)malloc(sizeof(NSGlyph) * 1); 

    CTFontGetGlyphsForCharacters((CTFontRef)arialUnicode, (const UniChar *)L"\u2668", (CGGlyph *)glyphs, 1);

It is adapted from a drawing tutorial my friend sent me: http://cocoawithlove.com/2011/01/advanced-drawing-using-appkit.html

它改编自我朋友寄给我的绘图教程:http://cocoawithlove.com/2011/01/advanced-drawing-using-appkit.html

Quite a nice tutorial actually :)

实际上相当不错的教程:)

But I want to know how to use any character as opposed to just the floral heart. I have found that buy changing the value of 2668 to some other value in the line:

但我想知道如何使用任何角色而不仅仅是花心。我发现买入将2668的值更改为该行中的其他值:

CTFontGetGlyphsForCharacters((CTFontRef)arialUnicode, (const UniChar *)L"\u2668", (CGGlyph *)glyphs, 1);

CTFontGetGlyphsForCharacters((CTFontRef)arialUnicode,(const UniChar *)L“\ u2668”,(CGGlyph *)字形,1);

I can make it change character but i want to automate this so that it automatically chooses different characters.

我可以让它改变角色但我想自动化它,以便它自动选择不同的角色。

Thank you

1 个解决方案

#1

If you truly want a random character, something like

如果你真的想要一个随机的角色,比如

UniChar uc = arc4random() % (0xffffu + 1);        
CTFontGetGlyphsForCharacters((CTFontRef)arialUnicode, &uc, (CGGlyph *)glyphs, 1);

But depending on what you are trying to do

但取决于你想要做什么

There are much easier ways to display text in Cocoa, particularly NSTextField

有更简单的方法可以在Cocoa中显示文本,尤其是NSTextField

There are so many characters in Unicode it's highly unlikely a single font will contain all the glyphs.

Unicode中有这么多字符,单个字体包含所有字形的可能性极小。

Do you really want a random unicode code point or do you want to select from a subset of the available characters? See http://www.unicode.org/charts/ to get an idea of just how much Unicode covers.

您真的想要一个随机的unicode代码点,还是想从可用字符的子集中进行选择?请参阅http://www.unicode.org/charts/以了解Unicode涵盖的内容。

#1