C++ 如何连接多个CString
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How to concatenate multiple CString
提问by Gustavo V
All functions return CString, this is a MFC code and must compile in 32 & 64 bits.
所有函数都返回 CString，这是一个 MFC 代码，必须以 32 位和 64 位编译。
Currently I'm using
目前我正在使用
CString sURI = GetURL(); sURI += GetMethod(); sURI += "?"; sURI += GetParameters();
CString sURI = GetURL(); sURI += GetMethod(); sURI += "?"; sURI += GetParameters();
Exists any manner to do the same like:
存在任何方式来做同样的事情：
CString sURI = GetURL() + GetMethod() + "?" + GetParameters();
CString sURI = GetURL() + GetMethod() + "?" + GetParameters();
回答by Bojan Hrnkas
Problem is that "?" of type "const char*" is, and its + operator does not take right hand operand of type CString. You have to convert "?" to CString like this:
问题是“？” 类型为“const char*”的是，其 + 运算符不采用 CString 类型的右手操作数。你必须转换“？” 到 CString 像这样：
CString sURI = GetURL() + GetMethod() + _T("?") + GetParameters();
回答by Luca Matteis
As long as all those functions return a CStringobject, then it should be fine to use the +operator for concatenation.
只要所有这些函数都返回一个CString对象，那么使用+运算符进行连接应该没问题。
Otherwise use the CString _T(const char *)function to wrap your regular C strings and make them a CString.
否则使用该CString _T(const char *)函数来包装您的常规 C 字符串并使它们成为 CString。
