菜鸟问题，谢谢

[soft2000]

CString HeaderString;
HeaderString="test";
LVColumn.pszText = (LPTSTR) (LPCTSTR)HeaderString;

为什么还必须用(LPTSTR) (LPCTSTR),是不是先把字符串转化成常量，然后再进行取字符串呢？谢谢

[ydogg]

pszText为非const类型，而HeaderString经]LPCTSTR强制转换后为const类型，所以需要去掉其const，以便能够赋值

[plusplus]

in fact, LPCTSTR is operator of CString, this operator can convert a CString into LPCTSTR, but LPTSTR is not a operator of CString, so you can use (LPTSTR)HeaderString.

while LPCTSTR is a const LPTSTR, so use LPTSTR to type cast.

[xiaoxiaohan]

You can freely substitute CString objects for const char* and LPCTSTR function arguments.

这是类型转换的问题，CString只能转换为LPCTSTR，而直接转换为LPTSTR会出现错误，又因为LVColumn.pszText为LPTSTR类型，而从LPCTSTR直接转换为LPTSTR会出现错误，所以需要再从LPCTSTR强制转换为LPTSTR，再赋给LVColumn.pszText。

[vanta]

呵呵，已经都说得很清楚了
CString::operator LPCTSTR
Use this casting operator to access the null-terminated C string contained in a CString object. No characters are copied; only a pointer is returned. Be careful with this operator. If you change a CString object after you have obtained the character pointer, you may cause a reallocation of memory that invalidates the pointer

[包心菜加糯米饭]

(LPCTSTR)是一个CString的操作符，也就是一个成员函数，(LPTSTR) 是一个强制类型转化。这样说应该明白了吧

[zellniu]

原因很简单：CString没有重载char*，只重载了const char*。