一.简介
<QtGlobal>头文件包含了Qt类库的一些全局定义,包含基本数据类型 函数和宏
二.全局变量定义
<QtGlobal>定义的数据类型:
Qt数据类型 定义 字节数
qint8 signed char 1
qint16 signed short 2
qint32 signed int 4
qingt64 long long int 8
qlonglong long long int 8
quint8 unsigned char 1
quint16 unsigned short 2
quint32 unsigned int 4
quint64 unsigned long long int 8
qulonglong unsigned long long int 8
uchar unsigned char 1
ushort unsigned short 2
uint unsigned int 4
ulong unsigned long 8
qreal double 8
qfloat16 2