Qt 内置图标的介绍和使用

一、

QT内置的ICON资源保存在QStyle类里。

可以通过成员函数 QStyle::standardIcon 来获取。

保存的icon有：

enum QStyle::StandardPixmap

This enum describes the available standard pixmaps. A standard pixmap is a pixmap that can follow some existing GUI style or guideline.

Constant	Value	Description
QStyle::SP_TitleBarMinButton	1	Minimize button on title bars (e.g., in QMdiSubWindow).
QStyle::SP_TitleBarMenuButton	0	Menu button on a title bar.
QStyle::SP_TitleBarMaxButton	2	Maximize button on title bars.
QStyle::SP_TitleBarCloseButton	3	Close button on title bars.
QStyle::SP_TitleBarNormalButton	4	Normal (restore) button on title bars.
QStyle::SP_TitleBarShadeButton	5	Shade button on title bars.
QStyle::SP_TitleBarUnshadeButton	6	Unshade button on title bars.
QStyle::SP_TitleBarContextHelpButton	7	The Context help button on title bars.
QStyle::SP_MessageBoxInformation	9	The "information" icon.
QStyle::SP_MessageBoxWarning	10	The "warning" icon.
QStyle::SP_MessageBoxCritical	11	The "critical" icon.
QStyle::SP_MessageBoxQuestion	12	The "question" icon.
QStyle::SP_DesktopIcon	13	The "desktop" icon.
QStyle::SP_TrashIcon	14	The "trash" icon.
QStyle::SP_ComputerIcon	15	The "My computer" icon.
QStyle::SP_DriveFDIcon	16	The floppy icon.
QStyle::SP_DriveHDIcon	17	The harddrive icon.
QStyle::SP_DriveCDIcon	18	The CD icon.
QStyle::SP_DriveDVDIcon	19	The DVD icon.
QStyle::SP_DriveNetIcon	20	The network icon.
QStyle::SP_DirHomeIcon	55	The home directory icon.
QStyle::SP_DirOpenIcon	21	The open directory icon.
QStyle::SP_DirClosedIcon	22	The closed directory icon.
QStyle::SP_DirIcon	37	The directory icon.
QStyle::SP_DirLinkIcon	23	The link to directory icon.
QStyle::SP_FileIcon	24	The file icon.
QStyle::SP_FileLinkIcon	25	The link to file icon.
QStyle::SP_FileDialogStart	28	The "start" icon in a file dialog.
QStyle::SP_FileDialogEnd	29	The "end" icon in a file dialog.
QStyle::SP_FileDialogToParent	30	The "parent directory" icon in a file dialog.
QStyle::SP_FileDialogNewFolder	31	The "create new folder" icon in a file dialog.
QStyle::SP_FileDialogDetailedView	32	The detailed view icon in a file dialog.
QStyle::SP_FileDialogInfoView	33	The file info icon in a file dialog.
QStyle::SP_FileDialogContentsView	34	The contents view icon in a file dialog.
QStyle::SP_FileDialogListView	35	The list view icon in a file dialog.
QStyle::SP_FileDialogBack	36	The back arrow in a file dialog.
QStyle::SP_DockWidgetCloseButton	8	Close button on dock windows (see also QDockWidget).
QStyle::SP_ToolBarHorizontalExtensionButton	26	Extension button for horizontal toolbars.
QStyle::SP_ToolBarVerticalExtensionButton	27	Extension button for vertical toolbars.
QStyle::SP_DialogOkButton	38	Icon for a standard OK button in a QDialogButtonBox.
QStyle::SP_DialogCancelButton	39	Icon for a standard Cancel button in a QDialogButtonBox.
QStyle::SP_DialogHelpButton	40	Icon for a standard Help button in a QDialogButtonBox.
QStyle::SP_DialogOpenButton	41	Icon for a standard Open button in a QDialogButtonBox.
QStyle::SP_DialogSaveButton	42	Icon for a standard Save button in a QDialogButtonBox.
QStyle::SP_DialogCloseButton	43	Icon for a standard Close button in a QDialogButtonBox.
QStyle::SP_DialogApplyButton	44	Icon for a standard Apply button in a QDialogButtonBox.
QStyle::SP_DialogResetButton	45	Icon for a standard Reset button in a QDialogButtonBox.
QStyle::SP_DialogDiscardButton	46	Icon for a standard Discard button in a QDialogButtonBox.
QStyle::SP_DialogYesButton	47	Icon for a standard Yes button in a QDialogButtonBox.
QStyle::SP_DialogNoButton	48	Icon for a standard No button in a QDialogButtonBox.
QStyle::SP_ArrowUp	49	Icon arrow pointing up.
QStyle::SP_ArrowDown	50	Icon arrow pointing down.
QStyle::SP_ArrowLeft	51	Icon arrow pointing left.
QStyle::SP_ArrowRight	52	Icon arrow pointing right.
QStyle::SP_ArrowBack	53	Equivalent to SP_ArrowLeft when the current layout direction isQt::LeftToRight, otherwise SP_ArrowRight.
QStyle::SP_ArrowForward	54	Equivalent to SP_ArrowRight when the current layout direction isQt::LeftToRight, otherwise SP_ArrowLeft.
QStyle::SP_CommandLink	56	Icon used to indicate a Vista style command link glyph.
QStyle::SP_VistaShield	57	Icon used to indicate UAC prompts on Windows Vista. This will return a null pixmap or icon on all other platforms.
QStyle::SP_BrowserReload	58	Icon indicating that the current page should be reloaded.
QStyle::SP_BrowserStop	59	Icon indicating that the page loading should stop.
QStyle::SP_MediaPlay	60	Icon indicating that media should begin playback.
QStyle::SP_MediaStop	61	Icon indicating that media should stop playback.
QStyle::SP_MediaPause	62	Icon indicating that media should pause playback.
QStyle::SP_MediaSkipForward	63	Icon indicating that media should skip forward.
QStyle::SP_MediaSkipBackward	64	Icon indicating that media should skip backward.
QStyle::SP_MediaSeekForward	65	Icon indicating that media should seek forward.
QStyle::SP_MediaSeekBackward	66	Icon indicating that media should seek backward.
QStyle::SP_MediaVolume	67	Icon indicating a volume control.
QStyle::SP_MediaVolumeMuted	68	Icon indicating a muted volume control.
QStyle::SP_CustomBase	0xf0000000	Base value for custom standard pixmaps; custom values must be greater than this value.

二、调用

QToolButton *button = new QToolButton(this);
button->resize(100,30);
button->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
QStyle* style = QApplication::style();
QIcon icon = style->standardIcon(QStyle::SP_DriveCDIcon);
button->setIcon(icon);
button->setText(QString("123"));
button->move(100,100);

    //按键设置图片文字的一般方式，与上文没有太大关系
    BtnYes = new QToolButton(this);
    BtnYes->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
    QPixmap yesPix(":/res/yesBtn.png");
    BtnYes->setIcon(yesPix);
    BtnYes->setIconSize(QSize(26, 24));

 参考文档：

https://www.cnblogs.com/xshang/p/6291998.html

https://blog.csdn.net/wh_19931117/article/details/80444107