QT、MFC 格式转换QString、CString转char*
QT数据格式转换方式
int 转 QString
int m=1;
QString b;
b=QString::number(m)
QString 转int
QString a="1111"
int b;
b=a.toInt()
char 转换为 QString
char a='b';
QString(QLatin1String(a));
QString 转换为 char
QString str="qq";
char *ch;
ch = str.toLatin1.data();
char * 与 const char *的转换
char *ch1="tt";
const char *ch2="qq";
ch2 = ch1;//不报错,但有警告
ch1 = (char *)ch2;
QByteArray 转换为 char *
char *ch;//不要定义成ch[n];
QByteArray byte;
ch = byte.data();
char * 转换为 QByteArray
char *ch;
QByteArray byte;
byte = QByteArray(ch);
QString 转换为 QByteArray
QByteArray byte;
QString string;
byte = string.toAscii();
QByteArray 转换为 QString
QByteArray byte;
QString string;
string = QString(byte);
MFC CString 转为char*
CString strSource;//声明CString
char* charSource; //声明char*
法1:
charSource = (char*)strSource.GetBuffer(0);
法2:
charSource = (char*)strSource.GetBuffer(strSource.GetLength());
法3:
charSource = (char*)(LPCTSTR)strSource