# from http://doc.qt.io/qt-5/qstyle.html#StandardPixmap-enum
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	56	The home directory icon.
QStyle::SP_DirOpenIcon	21	The open directory icon.
QStyle::SP_DirClosedIcon	22	The closed directory icon.
QStyle::SP_DirIcon	38	The directory icon.
QStyle::SP_DirLinkIcon	23	The link to directory icon.
QStyle::SP_DirLinkOpenIcon	24	The link to open directory icon.
QStyle::SP_FileIcon	25	The file icon.
QStyle::SP_FileLinkIcon	26	The link to file icon.
QStyle::SP_FileDialogStart	29	The "start" icon in a file dialog.
QStyle::SP_FileDialogEnd	30	The "end" icon in a file dialog.
QStyle::SP_FileDialogToParent	31	The "parent directory" icon in a file dialog.
QStyle::SP_FileDialogNewFolder	32	The "create new folder" icon in a file dialog.
QStyle::SP_FileDialogDetailedView	33	The detailed view icon in a file dialog.
QStyle::SP_FileDialogInfoView	34	The file info icon in a file dialog.
QStyle::SP_FileDialogContentsView	35	The contents view icon in a file dialog.
QStyle::SP_FileDialogListView	36	The list view icon in a file dialog.
QStyle::SP_FileDialogBack	37	The back arrow in a file dialog.
QStyle::SP_DockWidgetCloseButton	8	Close button on dock windows (see also QDockWidget).
QStyle::SP_ToolBarHorizontalExtensionButton	27	Extension button for horizontal toolbars.
QStyle::SP_ToolBarVerticalExtensionButton	28	Extension button for vertical toolbars.
QStyle::SP_DialogOkButton	39	Icon for a standard OK button in a QDialogButtonBox.
QStyle::SP_DialogCancelButton	40	Icon for a standard Cancel button in a QDialogButtonBox.
QStyle::SP_DialogHelpButton	41	Icon for a standard Help button in a QDialogButtonBox.
QStyle::SP_DialogOpenButton	42	Icon for a standard Open button in a QDialogButtonBox.
QStyle::SP_DialogSaveButton	43	Icon for a standard Save button in a QDialogButtonBox.
QStyle::SP_DialogCloseButton	44	Icon for a standard Close button in a QDialogButtonBox.
QStyle::SP_DialogApplyButton	45	Icon for a standard Apply button in a QDialogButtonBox.
QStyle::SP_DialogResetButton	46	Icon for a standard Reset button in a QDialogButtonBox.
QStyle::SP_DialogDiscardButton	47	Icon for a standard Discard button in a QDialogButtonBox.
QStyle::SP_DialogYesButton	48	Icon for a standard Yes button in a QDialogButtonBox.
QStyle::SP_DialogNoButton	49	Icon for a standard No button in a QDialogButtonBox.
QStyle::SP_ArrowUp	50	Icon arrow pointing up.
QStyle::SP_ArrowDown	51	Icon arrow pointing down.
QStyle::SP_ArrowLeft	52	Icon arrow pointing left.
QStyle::SP_ArrowRight	53	Icon arrow pointing right.
QStyle::SP_ArrowBack	54	Equivalent to SP_ArrowLeft when the current layout direction is Qt::LeftToRight, otherwise SP_ArrowRight.
QStyle::SP_ArrowForward	55	Equivalent to SP_ArrowRight when the current layout direction is Qt::LeftToRight, otherwise SP_ArrowLeft.
QStyle::SP_CommandLink	57	Icon used to indicate a Vista style command link glyph.
QStyle::SP_VistaShield	58	Icon used to indicate UAC prompts on Windows Vista. This will return a null pixmap or icon on all other platforms.
QStyle::SP_BrowserReload	59	Icon indicating that the current page should be reloaded.
QStyle::SP_BrowserStop	60	Icon indicating that the page loading should stop.
QStyle::SP_MediaPlay	61	Icon indicating that media should begin playback.
QStyle::SP_MediaStop	62	Icon indicating that media should stop playback.
QStyle::SP_MediaPause	63	Icon indicating that media should pause playback.
QStyle::SP_MediaSkipForward	64	Icon indicating that media should skip forward.
QStyle::SP_MediaSkipBackward	65	Icon indicating that media should skip backward.
QStyle::SP_MediaSeekForward	66	Icon indicating that media should seek forward.
QStyle::SP_MediaSeekBackward	67	Icon indicating that media should seek backward.
QStyle::SP_MediaVolume	68	Icon indicating a volume control.
QStyle::SP_MediaVolumeMuted	69	Icon indicating a muted volume control.
QStyle::SP_LineEditClearButton	70	Icon for a standard clear button in a QLineEdit. This enum value was added in Qt 5.2.
QStyle::SP_CustomBase	0xf0000000	Base value for custom standard pixmaps; custom values must be greater than this value.