QMargins 類

QMargins 類定義矩形的 4 邊距。 更多...

頭：	#include <QMargins>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Core) target_link_libraries(mytarget PRIVATE Qt6::Core)
qmake:	QT += core

• 所有成員列錶，包括繼承成員
• QMargins 屬於 描繪類 .

此類 相等可比較 .

此類 相等可比較 with QMarginsF .

公共函數

	QMargins ()
	QMargins (int left , int top , int right , int bottom )
int	bottom () const
bool	isNull () const
int	left () const
int	right () const
void	setBottom (int bottom )
void	setLeft (int left )
void	setRight (int right )
void	setTop (int Top )
(從 6.4 起) QMarginsF	toMarginsF () const
int	top () const
QMargins &	operator*= (int factor )
QMargins &	operator*= (qreal factor )
QMargins &	operator+= (const QMargins & margins )
QMargins &	operator+= (int addend )
QMargins &	operator-= (const QMargins & margins )
QMargins &	operator-= (int subtrahend )
QMargins &	operator/= (int divisor )
QMargins &	operator/= (qreal divisor )

相關非成員

bool	operator!= (const QMargins & lhs , const QMargins & rhs )
QMargins	operator* (const QMargins & margins , int factor )
QMargins	operator* (const QMargins & margins , qreal factor )
QMargins	operator* (int factor , const QMargins & margins )
QMargins	operator* (qreal factor , const QMargins & margins )
QMargins	operator+ (const QMargins & margins )
QMargins	operator+ (const QMargins & m1 , const QMargins & m2 )
QMargins	operator+ (const QMargins & lhs , int rhs )
QMargins	operator+ (int lhs , const QMargins & rhs )
QMargins	operator- (const QMargins & margins )
QMargins	operator- (const QMargins & m1 , const QMargins & m2 )
QMargins	operator- (const QMargins & lhs , int rhs )
QMargins	operator/ (const QMargins & margins , int divisor )
QMargins	operator/ (const QMargins & margins , qreal divisor )
QDataStream &	operator<< (QDataStream & stream , const QMargins & m )
bool	operator== (const QMargins & lhs , const QMargins & rhs )
QDataStream &	operator>> (QDataStream & stream , QMargins & m )
(從 6.0 起) QMargins	operator| (const QMargins & m1 , const QMargins & m2 )

詳細描述

QMargin defines a set of four margins; left, top, right, and bottom, that describe the size of the borders surrounding a rectangle.

The isNull () 函數返迴 true 僅當所有邊距被設為 0 時。

既可以流化，也可以比較 QMargins 對象。

成員函數文檔編製

[constexpr noexcept] QMargins:: QMargins ()

構造邊距對象，采用把所有邊距設為 0。

另請參閱 isNull ().

[constexpr noexcept] QMargins:: QMargins ( int left , int top , int right , int bottom )

構造邊距采用給定 left , top , right ，和 bottom

另請參閱 setLeft (), setRight (), setTop ()，和 setBottom ().

[constexpr noexcept] int QMargins:: bottom () const

返迴下邊距。

另請參閱 setBottom ().

[constexpr noexcept] bool QMargins:: isNull () const

返迴 true 若所有邊距為 0；否則返迴 false。

[constexpr noexcept] int QMargins:: left () const

返迴左邊距。

另請參閱 setLeft ().

[constexpr noexcept] int QMargins:: right () const

返迴右邊距。

另請參閱 setRight ().

[constexpr noexcept] void QMargins:: setBottom ( int bottom )

將下邊距設為 bottom .

另請參閱 bottom ().

[constexpr noexcept] void QMargins:: setLeft ( int left )

將左邊距設為 left .

另請參閱 left ().

[constexpr noexcept] void QMargins:: setRight ( int right )

將右邊距設為 right .

另請參閱 right ().

[constexpr noexcept] void QMargins:: setTop ( int Top )

將上邊距設為 Top .

另請參閱 top ().

[constexpr noexcept, since 6.4] QMarginsF QMargins:: toMarginsF () const

Returns these margins as margins with floating point accuracy.

該函數在 Qt 6.4 引入。

另請參閱 QMarginsF::toMargins ().

[constexpr noexcept] int QMargins:: top () const

返迴上邊距。

另請參閱 setTop ().

[constexpr noexcept] QMargins &QMargins:: operator*= ( int factor )

此對象的各分量乘以 factor 並返迴其引用。

另請參閱 operator/= ().

[constexpr noexcept] QMargins &QMargins:: operator*= ( qreal factor )

此對象的各分量乘以 factor 並返迴其引用。

這是重載函數。

另請參閱 operator/= ().

[constexpr noexcept] QMargins &QMargins:: operator+= (const QMargins & margins )

Add each component of margins to the respective component of this object and returns a reference to it.

另請參閱 operator-= ().

[constexpr noexcept] QMargins &QMargins:: operator+= ( int addend )

添加 addend to each component of this object and returns a reference to it.

這是重載函數。

另請參閱 operator-= ().

[constexpr noexcept] QMargins &QMargins:: operator-= (const QMargins & margins )

Subtract each component of margins from the respective component of this object and returns a reference to it.

另請參閱 operator+= ().

[constexpr noexcept] QMargins &QMargins:: operator-= ( int subtrahend )

減去 subtrahend from each component of this object and returns a reference to it.

這是重載函數。

另請參閱 operator+= ().

[constexpr] QMargins &QMargins:: operator/= ( int divisor )

此對象的各分量除以 divisor 並返迴其引用。

另請參閱 operator*= ().

[constexpr] QMargins &QMargins:: operator/= ( qreal divisor )

這是重載函數。

另請參閱 operator*= ().

相關非成員

[constexpr noexcept] bool operator!= (const QMargins & lhs , const QMargins & rhs )

返迴 true if lhs and rhs 不同；否則返迴 false .

[constexpr noexcept] QMargins operator* (const QMargins & margins , int factor )

返迴 QMargins object that is formed by multiplying each component of the given margins by factor .

另請參閱 QMargins::operator*= () 和 QMargins::operator/= ().

[constexpr noexcept] QMargins operator* (const QMargins & margins , qreal factor )

返迴 QMargins object that is formed by multiplying each component of the given margins by factor .

這是重載函數。

另請參閱 QMargins::operator*= () 和 QMargins::operator/= ().

[constexpr noexcept] QMargins operator* ( int factor , const QMargins & margins )

返迴 QMargins object that is formed by multiplying each component of the given margins by factor .

這是重載函數。

另請參閱 QMargins::operator*= () 和 QMargins::operator/= ().

[constexpr noexcept] QMargins operator* ( qreal factor , const QMargins & margins )

返迴 QMargins object that is formed by multiplying each component of the given margins by factor .

這是重載函數。

另請參閱 QMargins::operator*= () 和 QMargins::operator/= ().

[constexpr noexcept] QMargins operator+ (const QMargins & margins )

Returns a QMargin object that is formed from all components of margins .

[constexpr noexcept] QMargins operator+ (const QMargins & m1 , const QMargins & m2 )

返迴 QMargins 對象是和對於給定邊距 m1 and m2 ；各分量分彆相加。

另請參閱 QMargins::operator+= () 和 QMargins::operator-= ().

[constexpr noexcept] QMargins operator+ (const QMargins & lhs , int rhs )

返迴 QMargins object that is formed by adding rhs to lhs .

另請參閱 QMargins::operator+= () 和 QMargins::operator-= ().

[constexpr noexcept] QMargins operator+ ( int lhs , const QMargins & rhs )

返迴 QMargins object that is formed by adding lhs to rhs .

另請參閱 QMargins::operator+= () 和 QMargins::operator-= ().

[constexpr noexcept] QMargins operator- (const QMargins & margins )

Returns a QMargin object that is formed by negating all components of margins .

[constexpr noexcept] QMargins operator- (const QMargins & m1 , const QMargins & m2 )

返迴 QMargins 對象的形成是通過減去 m2 from m1 ；分彆減去各分量。

另請參閱 QMargins::operator+= () 和 QMargins::operator-= ().

[constexpr noexcept] QMargins operator- (const QMargins & lhs , int rhs )

返迴 QMargins 對象的形成是通過減去 rhs from lhs .

另請參閱 QMargins::operator+= () 和 QMargins::operator-= ().

[constexpr] QMargins operator/ (const QMargins & margins , int divisor )

返迴 QMargins object that is formed by dividing the components of the given margins 通過給定 divisor .

另請參閱 QMargins::operator*= () 和 QMargins::operator/= ().

[constexpr] QMargins operator/ (const QMargins & margins , qreal divisor )

返迴 QMargins object that is formed by dividing the components of the given margins 通過給定 divisor .

這是重載函數。

另請參閱 QMargins::operator*= () 和 QMargins::operator/= ().

QDataStream & operator<< ( QDataStream & stream , const QMargins & m )

寫入邊距 m 到給定 stream 並返迴流引用。

另請參閱 序列化 Qt 數據類型 .

[constexpr noexcept] bool operator== (const QMargins & lhs , const QMargins & rhs )

返迴 true if lhs and rhs 相等；否則返迴 false .

QDataStream & operator>> ( QDataStream & stream , QMargins & m )

讀取邊距從給定 stream 進邊距 m 並返迴流引用。

另請參閱 序列化 Qt 數據類型 .

[constexpr noexcept, since 6.0] QMargins operator| (const QMargins & m1 , const QMargins & m2 )

返迴 QMargins object that is formed from the maximum of each component of m2 and m1 .

該函數在 Qt 6.0 引入。

另請參閱 QMargins::operator+= () 和 QMargins::operator-= ().

內容

1. 公共函數

2. 相關非成員

3. 詳細描述