WRL Helper类将Platform :: String ^（PCWSTR）转换为ANSI char *？

问题描述

ATL有简单的宏可以在不同的字符格式之间进行转换（安全）。 WRL是否提供类似的功能？

ATL had easy macros to convert (securely) between the different character formats. Does WRL provide similar functionality?

如果不希望在整个地方使用WideCharToMultiByte和朋友（缓冲区溢出错误等待发生），建议的方法是什么？

Whats the recommended way to do that, if one does not want to use WideCharToMultiByte and friends all over the place (buffer overflow errors waiting to happen).

推荐答案

您可以自己编写此函数，如下所示：

You can write this function by yourself, like this:

	String^ str1 = "AAAAAAAA";
	wstring wstr( str1->Data() ); 
	int len = WideCharToMultiByte(CP_ACP, 0, wstr.c_str(), wstr.size(), NULL, 0, NULL, NULL); 
	char* buffer = new char[len + 1];  
	WideCharToMultiByte(CP_ACP, 0, wstr.c_str(), wstr.size(), buffer, len, NULL, NULL); 
	buffer[len] = '\0'; 

http://msdn.microsoft.com/en-us/library/hh438486(v = vs.110）.aspx

最好的问候，

Jesse

Best regards,
Jesse

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