内容

• 特性
• 公共函数
• 公共槽
• 信号
• 详细描述

QWinTaskbarProgress 类

QWinTaskbarProgress class represents a progress indicator in the Windows taskbar. 更多...

头：	#include <QWinTaskbarProgress>
qmake:	QT += winextras
Since:	Qt 5.2
继承：	QObject

• 所有成员列表，包括继承成员

特性

maximum : int minimum : int paused : bool

stopped : const bool value : int visible : bool

• 1 特性继承自 QObject

公共函数

	QWinTaskbarProgress (QObject * parent = Q_NULLPTR)
	~QWinTaskbarProgress ()
bool	isPaused () const
bool	isStopped () const
bool	isVisible () const
int	maximum () const
int	minimum () const
int	value () const

• 32 公共函数继承自 QObject

公共槽

void	hide ()
void	pause ()
void	reset ()
void	resume ()
void	setMaximum (int maximum )
void	setMinimum (int minimum )
void	setPaused (bool paused )
void	setRange (int minimum , int maximum )
void	setValue (int value )
void	setVisible (bool visible )
void	show ()
void	stop ()

• 1 公共槽继承自 QObject

信号

void	maximumChanged (int maximum )
void	minimumChanged (int minimum )
void	valueChanged (int value )
void	visibilityChanged (bool visible )

• 2 信号继承自 QObject

额外继承成员

• 11 静态公共成员继承自 QObject
• 9 保护函数继承自 QObject

详细描述

QWinTaskbarProgress class represents a progress indicator in the Windows taskbar.

A progress indicator is used to give the user an indication of the progress of an operation and to reassure them that the application is still running.

The progress indicator uses the concept of steps . It is set up by specifying the minimum and maximum possible step values, and it will display the percentage of steps that have been completed when you later give it the current step value. The percentage is calculated by dividing the progress ( value () - minimum ()) 除以 maximum () - minimum ().

The minimum and maximum number of steps can be specified by calling setMinimum () 和 setMaximum (). The current number of steps is set with setValue (). The progress indicator can be rewound to the beginning with reset ().

If minimum and maximum both are set to 0 , the indicator shows up as a busy (indeterminate) indicator instead of a percentage of steps. This is useful when it is not possible to determine the number of steps.

	A progress indicator at 50%.
	A paused progress indicator at 50%.
	A stopped progress indicator at 50%.
	An indeterminate progress indicator.

注意： The final appearance of the progress indicator varies depending on the active Windows theme.

另请参阅 QWinTaskbarButton .

特性文档编制

maximum : int

此特性保持进度指示器的最大值

默认值为 100 .

访问函数：

int	maximum () const
void	setMaximum (int maximum )

通知程序信号：

void	maximumChanged (int maximum )

minimum : int

此特性保持进度指示器的最小值

默认值为 0 .

访问函数：

int	minimum () const
void	setMinimum (int minimum )

通知程序信号：

void	minimumChanged (int minimum )

paused : bool

This property holds whether the progress indicator is paused.

默认值为 false .

The final appearance of a paused progress indicator depends on the active Windows theme. Typically, a paused progress indicator turns yellow to indicate that the progress is currently paused. Unlike a stopped progress indicator, a paused progress should not be used to indicate an error.

访问函数：

bool	isPaused () const
void	setPaused (bool paused )

另请参阅 pause () 和 resume ().

stopped : const bool

This property holds whether the progress indicator is stopped.

默认值为 false .

The final appearance of a stopped progress indicator depends on the active Windows theme. Typically, a stopped progress indicator turns red to indicate that the progress is currently stopped. Unlike a paused progress indicator, a stopped progress may be used to indicate an error.

访问函数：

bool	isStopped () const

另请参阅 stop () 和 resume ().

value : int

This property holds the current value of the progress indicator

默认值为 0 .

访问函数：

int	值 () const
void	setValue (int value )

通知程序信号：

void	valueChanged (int value )

visible : bool

This property holds whether the progress indicator is visible.

默认值为 false .

访问函数：

bool	isVisible () const
void	setVisible (bool visible )

通知程序信号：

void	visibilityChanged (bool visible )

成员函数文档编制

QWinTaskbarProgress:: QWinTaskbarProgress ( QObject * parent = Q_NULLPTR)

构造 QWinTaskbarProgress with the parent object parent .

QWinTaskbarProgress:: ~QWinTaskbarProgress ()

销毁 QWinTaskbarProgress .

[slot] void QWinTaskbarProgress:: hide ()

Hides the progress indicator.

[slot] void QWinTaskbarProgress:: pause ()

Pauses the progress indicator.

另请参阅 paused .

[slot] void QWinTaskbarProgress:: reset ()

Resets the progress indicator.

This function rewinds the value to the minimum value.

[slot] void QWinTaskbarProgress:: resume ()

Resumes a paused or stopped progress indicator.

另请参阅 paused and stopped .

[slot] void QWinTaskbarProgress:: setRange ( int minimum , int maximum )

Sets both the minimum and maximum 值。

[slot] void QWinTaskbarProgress:: show ()

Shows the progress indicator.

[slot] void QWinTaskbarProgress:: stop ()

Stops the progress indicator.

另请参阅 stopped .