资料介绍
qt常用类
判断:
bool isDigit() const;//判断是否是十进制数字('0'-'9')
bool isLetter() const;//判断是否是字??
bool isLetterOrNumber() const;//判断力是否是字母或数??
bool isLower() const;判断是否是小写字??
bool isUpper() const;//判断是否是大写字??
bool isNull() const;//判断是否是空字符'0'
bool isPrint() const;//判断是否是可打印字符
bool isSpace() const;//判断是否是分隔符,包括空格??
转换:
char toAscii() const;//得到字符的ASCII??
QChar toLower() const;//转换成小写字??
QChar toUpper() const;转换成大写字??
ushort unicode() const;//得到Unicode编码
比较:
bool operator != (QChar c1, QChar c2);//判断c1是否不等于c2
bool operator < (QChar c1, QChar c2);// ??......是否小于...
bool operator <= (QChar c1, QChar c2);
bool operator == (QChar c1, QChar c2);
bool operator > (QChar c1, QChar c2);
bool operator >= (QChar c1, QChar c2);
判断: ???????????bool isEmpty() const; //判断是否为空字符??
转换: ???????????将字符串转换成数??
double
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