Not Set 和 Use Unicdoe Character Set 有何不同?

Question

VC2005工程属性设置中(Configuration properties-->General) Character Set -->Not Set 和 Use Unicdoe Character Set 有何不同?它们各有什么优势和特点? 它们之间字符转换有什么规律?

Answer 1

一个默认是使用窄字符 ，一个是使用宽字符；一个字符只占一个字节,一个宽字符通常占2个字节。UNICODE字符集称为宽字符，16位,可以存放世界上所有语言所有文字。

Answer 2

http://topic.csdn.net/u/20090911/10/ce82387c-b997-4e46-a0ec-869fc0aeca05.html

Answer 3

Unicdoe 下如何往 char buf[10] 中 拷贝 字符串呢?

Answer 4

Unicdoe 下如何往 char buf[10] 中 拷贝 字符串呢?strcpy也支持的， 用wcscpy就是unicode 

Answer 5

VC++2005下一个应用程序(UniCode 工程), 它要调用一个开源的代码(开源的代码是经过测试的).  开源代码中一个函数定义如下:
int WINAPI OpenPortAndConnect (HANDLE &hCom, char* cPort, UCHAR flagCrc);
int WINAPI OpenPortAndConnect (HANDLE &hCom, char* cPort, UCHAR flagCrc)
{
    ....
}
现在的情况:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int WINAPI OpenPortAndConnect (HANDLE &hCom, wchar_t* cPort, UCHAR flagCrc);
int WINAPI OpenPortAndConnect (HANDLE &hCom, wchar_t* cPort, UCHAR flagCrc)
{
    ....
}void Crm900Dlg::OnBnClickedButton1()
{
    wchar_t* comchar=L"COM3:";
    CString  ComboText;
   
    ctrCombo.GetWindowText(ComboText);   //combobox 控件, 得到控件所选的COM口.
    comchar = ComboText.GetBuffer(ComboText.GetLength());    if (OpenPortAndConnect(hCom, comchar, CRC))
    {
        //这样可以连接成功
    }
}
现在的情况:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++出现的问题:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
int WINAPI OpenPortAndConnect (HANDLE &hCom, char* cPort, UCHAR flagCrc);
int WINAPI OpenPortAndConnect (HANDLE &hCom, char* cPort, UCHAR flagCrc)
{
    ....
}void Crm900Dlg::OnBnClickedButton1()
{
    char* comchar="COM3:";
    CString  ComboText;
   
    ctrCombo.GetWindowText(ComboText);   //combobox 控件
    strcpy(comchar, (const char *)ComboText.GetBuffer(ComboText.GetLength()));    if (OpenPortAndConnect(hCom, comchar, CRC))   // 或 if (OpenPortAndConnect(hCom, "COM:3", CRC))
    {
        //这样连接不成功
    }
}
出现的问题:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++想得到的结果:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++(想维护开源代码的完整性, 不到改动开源代码)
int WINAPI OpenPortAndConnect (HANDLE &hCom, char* cPort, UCHAR flagCrc);
int WINAPI OpenPortAndConnect (HANDLE &hCom, char* cPort, UCHAR flagCrc)
{
    ....
}void Crm900Dlg::OnBnClickedButton1()
{
    char* comchar="COM3:";
    CString  ComboText;
   
    ctrCombo.GetWindowText(ComboText);   //combobox 控件    //这里应如何处理呢?
    OpenPortAndConnect(hCom, comchar, CRC);}
想得到的结果:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++