QStyleOptionHeader 類

QStyleOptionHeader 類是用於繪製 Header (頭) 的描述參數。更多...

頭：	#include <QStyleOptionHeader>
qmake:	QT += widgets
繼承：	QStyleOption

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公共類型

enum	SectionPosition { Beginning, Middle, End, OnlyOneSection }
enum	SelectedPosition { NotAdjacent, NextIsSelected, PreviousIsSelected, NextAndPreviousAreSelected }
enum	SortIndicator { None, SortUp, SortDown }
enum	StyleOptionType { Type }
enum	StyleOptionVersion { Version }

公共函數

	QStyleOptionHeader (const QStyleOptionHeader & other )
	QStyleOptionHeader ()

公共變量

QIcon	icon
Qt::Alignment	iconAlignment
Qt::Orientation	orientation
QStyleOptionHeader::SectionPosition	position
int	section
QStyleOptionHeader::SelectedPosition	selectedPosition
QStyleOptionHeader::SortIndicator	sortIndicator
QString	text
Qt::Alignment	textAlignment

詳細描述

QStyleOptionHeader contains all the information that QStyle functions need to draw the item views' header pane, header sort arrow, and header label.

For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters used by the style functions.

對於可以如何使用樣式選項的演示範例，見樣式範例。

另請參閱 QStyleOption .

成員類型文檔編製

enum QStyleOptionHeader:: SectionPosition

This enum lets you know where the section's position is in relation to the other sections.

常量	值	描述
`QStyleOptionHeader::Beginning`	`0`	At the beginining of the header
`QStyleOptionHeader::Middle`	`1`	In the middle of the header
`QStyleOptionHeader::End`	`2`	At the end of the header
`QStyleOptionHeader::OnlyOneSection`	`3`	Only one header section

另請參閱 position .

enum QStyleOptionHeader:: SelectedPosition

This enum lets you know where the section's position is in relation to the selected section.

常量	值	描述
`QStyleOptionHeader::NotAdjacent`	`0`	Not adjacent to the selected section
`QStyleOptionHeader::NextIsSelected`	`1`	The next section is selected
`QStyleOptionHeader::PreviousIsSelected`	`2`	The previous section is selected
`QStyleOptionHeader::NextAndPreviousAreSelected`	`3`	Both the next and previous section are selected

另請參閱 selectedPosition .

enum QStyleOptionHeader:: SortIndicator

Indicates which direction the sort indicator should be drawn

常量	值	描述
`QStyleOptionHeader::None`	`0`	No sort indicator is needed
`QStyleOptionHeader::SortUp`	`1`	Draw an up indicator
`QStyleOptionHeader::SortDown`	`2`	Draw a down indicator

另請參閱 sortIndicator .

enum QStyleOptionHeader:: StyleOptionType

This enum is used to hold information about the type of the style option, and is defined for each QStyleOption 子類。

常量	值	描述
`QStyleOptionHeader::Type`	`SO_Header`	提供樣式選項的類型 ( SO_Header 對於此類)。

類型內部使用通過 QStyleOption ，其子類，和 qstyleoption_cast () to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleOption subclass and your own styles.

另請參閱 StyleOptionVersion .

enum QStyleOptionHeader:: StyleOptionVersion

This enum is used to hold information about the version of the style option, and is defined for each QStyleOption 子類。

常量	值	描述
`QStyleOptionHeader::Version`	`1`	1

版本的使用通過 QStyleOption 子類以實現擴展在不破壞兼容性的情況下。若使用 qstyleoption_cast ()，通常不需要校驗它。

另請參閱 StyleOptionType .

成員函數文檔編製

QStyleOptionHeader:: QStyleOptionHeader (const QStyleOptionHeader & other )

構造副本為 other 樣式選項。

QStyleOptionHeader:: QStyleOptionHeader ()

Constructs a QStyleOptionHeader, initializing the members variables to their default values.

成員變量文檔編製

QIcon QStyleOptionHeader:: icon

This variable holds the icon of the header

默認值為空圖標 (即：圖標既沒有像素圖，也沒有文件名)。

Qt::Alignment QStyleOptionHeader:: iconAlignment

This variable holds the alignment flags for the icon of the header

默認值為 Qt::AlignLeft .

Qt::Orientation QStyleOptionHeader:: orientation

This variable holds the header's orientation (horizontal or vertical)

The default orientation is Qt::Horizontal

QStyleOptionHeader::SectionPosition QStyleOptionHeader:: position

This variable holds the section's position in relation to the other sections

默認值為 QStyleOptionHeader::Beginning .

int QStyleOptionHeader:: section

This variable holds which section of the header is being painted

默認值為 0。

QStyleOptionHeader::SelectedPosition QStyleOptionHeader:: selectedPosition

This variable holds the section's position in relation to the selected section

默認值為 QStyleOptionHeader::NotAdjacent

QStyleOptionHeader::SortIndicator QStyleOptionHeader:: sortIndicator

This variable holds the direction the sort indicator should be drawn

默認值為 QStyleOptionHeader::None .

QString QStyleOptionHeader:: text

This variable holds the text of the header

默認值為空字符串。

Qt::Alignment QStyleOptionHeader:: textAlignment

This variable holds the alignment flags for the text of the header

默認值為 Qt::AlignLeft .