如何确定货币符号是否位于MacOS上的数字的左侧或右侧

How do I determine if the currency symbol is supposed to be on the left or right of a number using CFLocale / CFNumberFormatter in a Mac Carbon project?

如何在Mac Carbon项目中使用CFLocale / CFNumberFormatter确定货币符号是否应该位于数字的左侧或右侧?

I need to interface with a spreadsheet application which requires me to pass a number, currency symbol, currency symbol location and padding instead of a CStringRef created with CFNumberFormatter.

我需要与电子表格应用程序连接,这需要我传递数字,货币符号,货币符号位置和填充,而不是使用CFNumberFormatter创建的CStringRef。

CFLocaleRef currentLocale = CFLocaleCopyCurrent();
CFTypeRef currencySymbol = CFLocaleGetValue (currentLocale, kCFLocaleCurrencySymbol);

provides me with the currency symbol as a string. But I'm lost on how to determine the position of the currency symbol...

为我提供货币符号作为字符串。但我迷失在如何确定货币符号的位置......

2 个解决方案

#1

As a workaround, I have started to create a string representing a currency value and determining the position of the currency symbol by searching the string, but this sure looks fishy to me.

作为一种解决方法,我已经开始创建一个表示货币值的字符串,并通过搜索字符串来确定货币符号的位置,但这对我来说确实很可疑。

    CFNumberFormatterRef numberFormatter = CFNumberFormatterCreate(kCFAllocatorDefault, CFLocaleCopyCurrent(), kCFNumberFormatterCurrencyStyle);
    double someNumber = 0;
    CFStringRef asString = CFNumberFormatterCreateStringWithValue(kCFAllocatorDefault, numberFormatter, kCFNumberDoubleType, &someNumber);

...

Feel free to hit me with a rolled-up newspaper and tell me the real answer...

随意用报纸打我,告诉我真正的答案......

#2

You could try inspecting the format string returned from CFNumberFormatterGetFormat. It looks like you want to search for ¤ which is \u00A4.

您可以尝试检查从CFNumberFormatterGetFormat返回的格式字符串。看起来你想要搜索¤这是\ u00A4。

#1