Qt Documentation

C

Qt QML Type

Provides a global object with useful enums and functions from Qt. More...

Import Statement:	import QtQuick .
Since:	Qt Quick Ultralite 1.0

List of all members, including inherited members

Properties

Key : enumeration
Orientation : enumeration
uiLanguage : string

Methods

color rgba(real red, real green, real blue, real alpha)

Detailed Description

The Qt object is a global object with utility functions, properties and enums.

It is not instantiable; to use it, call the members of the global Qt object directly. For example:

import QtQuick 2.15

Text {
    color: Qt.rgba(1, 0, 0, 1)
    text: "hello, world"
}

Enums

The Qt object contains some of the enums available in the Qt Namespace. For example, you can access the Qt::Vertical enumeration value as Qt.Vertical.

Types

If the QtQuick module has been imported, the following helper functions for creating objects of specific data types are also available for clients to use:

color - use Qt::rgba()

Property Documentation

Key : enumeration

The key names used by Qt.

Constant	Description
`Key_Escape`
`Key_Tab`
`Key_Backtab`
`Key_Backspace`
`Key_Return`
`Key_Enter`	Typically located on the keypad.
`Key_Insert`
`Key_Delete`
`Key_Pause`	The Pause/Break key (Note: Not related to pausing media)
`Key_Print`
`Key_SysReq`
`Key_Clear`	Corresponds to the Clear key on selected Apple keyboard models. On other systems it is commonly mapped to the numeric keypad key 5, when Num Lock is `off`.
`Key_Home`
`Key_End`
`Key_Left`
`Key_Up`
`Key_Right`
`Key_Down`
`Key_PageUp`
`Key_PageDown`
`Key_Shift`
`Key_Control`	On macOS, this corresponds to the Command keys.
`Key_Meta`	On macOS, this corresponds to the Control keys. On Windows keyboards, this key is mapped to the Windows key.
`Key_Alt`
`Key_AltGr`	On Windows, when the KeyDown event for this key is sent, the Ctrl+Alt modifiers are also set.
`Key_CapsLock`
`Key_NumLock`
`Key_ScrollLock`
`Key_F1`
`Key_F2`
`Key_F3`
`Key_F4`
`Key_F5`
`Key_F6`
`Key_F7`
`Key_F8`
`Key_F9`
`Key_F10`
`Key_F11`
`Key_F12`
`Key_F13`
`Key_F14`
`Key_F15`
`Key_F16`
`Key_F17`
`Key_F18`
`Key_F19`
`Key_F20`
`Key_F21`
`Key_F22`
`Key_F23`
`Key_F24`
`Key_F25`
`Key_F26`
`Key_F27`
`Key_F28`
`Key_F29`
`Key_F30`
`Key_F31`
`Key_F32`
`Key_F33`
`Key_F34`
`Key_F35`
`Key_Super_L`
`Key_Super_R`
`Key_Menu`
`Key_Hyper_L`
`Key_Hyper_R`
`Key_Help`
`Key_Direction_L`
`Key_Direction_R`
`Key_Space`
`Key_Any`
`Key_Exclam`
`Key_QuoteDbl`
`Key_NumberSign`
`Key_Dollar`
`Key_Percent`
`Key_Ampersand`
`Key_Apostrophe`
`Key_ParenLeft`
`Key_ParenRight`
`Key_Asterisk`
`Key_Plus`
`Key_Comma`
`Key_Minus`
`Key_Period`
`Key_Slash`
`Key_0`
`Key_1`
`Key_2`
`Key_3`
`Key_4`
`Key_5`
`Key_6`
`Key_7`
`Key_8`
`Key_9`
`Key_Colon`
`Key_Semicolon`
`Key_Less`
`Key_Equal`
`Key_Greater`
`Key_Question`
`Key_At`
`Key_A`
`Key_B`
`Key_C`
`Key_D`
`Key_E`
`Key_F`
`Key_G`
`Key_H`
`Key_I`
`Key_J`
`Key_K`
`Key_L`
`Key_M`
`Key_N`
`Key_O`
`Key_P`
`Key_Q`
`Key_R`
`Key_S`
`Key_T`
`Key_U`
`Key_V`
`Key_W`
`Key_X`
`Key_Y`
`Key_Z`
`Key_BracketLeft`
`Key_Backslash`
`Key_BracketRight`
`Key_AsciiCircum`
`Key_Underscore`
`Key_QuoteLeft`
`Key_BraceLeft`
`Key_Bar`
`Key_BraceRight`
`Key_AsciiTilde`
`Key_nobreakspace`
`Key_exclamdown`
`Key_cent`
`Key_sterling`
`Key_currency`
`Key_yen`
`Key_brokenbar`
`Key_section`
`Key_diaeresis`
`Key_copyright`
`Key_ordfeminine`
`Key_guillemotleft`
`Key_notsign`
`Key_hyphen`
`Key_registered`
`Key_macron`
`Key_degree`
`Key_plusminus`
`Key_twosuperior`
`Key_threesuperior`
`Key_acute`
`Key_mu`
`Key_paragraph`
`Key_periodcentered`
`Key_cedilla`
`Key_onesuperior`
`Key_masculine`
`Key_guillemotright`
`Key_onequarter`
`Key_onehalf`
`Key_threequarters`
`Key_questiondown`
`Key_Agrave`
`Key_Aacute`
`Key_Acircumflex`
`Key_Atilde`
`Key_Adiaeresis`
`Key_Aring`
`Key_AE`
`Key_Ccedilla`
`Key_Egrave`
`Key_Eacute`
`Key_Ecircumflex`
`Key_Ediaeresis`
`Key_Igrave`
`Key_Iacute`
`Key_Icircumflex`
`Key_Idiaeresis`
`Key_ETH`
`Key_Ntilde`
`Key_Ograve`
`Key_Oacute`
`Key_Ocircumflex`
`Key_Otilde`
`Key_Odiaeresis`
`Key_multiply`
`Key_Ooblique`
`Key_Ugrave`
`Key_Uacute`
`Key_Ucircumflex`
`Key_Udiaeresis`
`Key_Yacute`
`Key_THORN`
`Key_ssharp`
`Key_division`
`Key_ydiaeresis`
`Key_Multi_key`
`Key_Codeinput`
`Key_SingleCandidate`
`Key_MultipleCandidate`
`Key_PreviousCandidate`
`Key_Mode_switch`
`Key_Kanji`
`Key_Muhenkan`
`Key_Henkan`
`Key_Romaji`
`Key_Hiragana`
`Key_Katakana`
`Key_Hiragana_Katakana`
`Key_Zenkaku`
`Key_Hankaku`
`Key_Zenkaku_Hankaku`
`Key_Touroku`
`Key_Massyo`
`Key_Kana_Lock`
`Key_Kana_Shift`
`Key_Eisu_Shift`
`Key_Eisu_toggle`
`Key_Hangul`
`Key_Hangul_Start`
`Key_Hangul_End`
`Key_Hangul_Hanja`
`Key_Hangul_Jamo`
`Key_Hangul_Romaja`
`Key_Hangul_Jeonja`
`Key_Hangul_Banja`
`Key_Hangul_PreHanja`
`Key_Hangul_PostHanja`
`Key_Hangul_Special`
`Key_Dead_Grave`
`Key_Dead_Acute`
`Key_Dead_Circumflex`
`Key_Dead_Tilde`
`Key_Dead_Macron`
`Key_Dead_Breve`
`Key_Dead_Abovedot`
`Key_Dead_Diaeresis`
`Key_Dead_Abovering`
`Key_Dead_Doubleacute`
`Key_Dead_Caron`
`Key_Dead_Cedilla`
`Key_Dead_Ogonek`
`Key_Dead_Iota`
`Key_Dead_Voiced_Sound`
`Key_Dead_Semivoiced_Sound`
`Key_Dead_Belowdot`
`Key_Dead_Hook`
`Key_Dead_Horn`
`Key_Dead_Stroke`
`Key_Dead_Abovecomma`
`Key_Dead_Abovereversedcomma`
`Key_Dead_Doublegrave`
`Key_Dead_Belowring`
`Key_Dead_Belowmacron`
`Key_Dead_Belowcircumflex`
`Key_Dead_Belowtilde`
`Key_Dead_Belowbreve`
`Key_Dead_Belowdiaeresis`
`Key_Dead_Invertedbreve`
`Key_Dead_Belowcomma`
`Key_Dead_Currency`
`Key_Dead_a`
`Key_Dead_A`
`Key_Dead_e`
`Key_Dead_E`
`Key_Dead_i`
`Key_Dead_I`
`Key_Dead_o`
`Key_Dead_O`
`Key_Dead_u`
`Key_Dead_U`
`Key_Dead_Small_Schwa`
`Key_Dead_Capital_Schwa`
`Key_Dead_Greek`
`Key_Dead_Lowline`
`Key_Dead_Aboveverticalline`
`Key_Dead_Belowverticalline`
`Key_Dead_Longsolidusoverlay`
`Key_Back`
`Key_Forward`
`Key_Stop`
`Key_Refresh`
`Key_VolumeDown`
`Key_VolumeMute`
`Key_VolumeUp`
`Key_BassBoost`
`Key_BassUp`
`Key_BassDown`
`Key_TrebleUp`
`Key_TrebleDown`
`Key_MediaPlay`	A key setting the state of the media player to play
`Key_MediaStop`	A key setting the state of the media player to stop
`Key_MediaPrevious`
`Key_MediaNext`
`Key_MediaRecord`
`Key_MediaPause`	A key setting the state of the media player to pause (Note: not the pause/break key)
`Key_MediaTogglePlayPause`	A key to toggle the play/pause state in the media player (rather than setting an absolute state)
`Key_HomePage`
`Key_Favorites`
`Key_Search`
`Key_Standby`
`Key_OpenUrl`
`Key_LaunchMail`
`Key_LaunchMedia`
`Key_Launch0`	On X11 this key is mapped to "My Computer" (XF86XK_MyComputer) key for legacy reasons.
`Key_Launch1`	On X11 this key is mapped to "Calculator" (XF86XK_Calculator) key for legacy reasons.
`Key_Launch2`	On X11 this key is mapped to XF86XK_Launch0 key for legacy reasons.
`Key_Launch3`	On X11 this key is mapped to XF86XK_Launch1 key for legacy reasons.
`Key_Launch4`	On X11 this key is mapped to XF86XK_Launch2 key for legacy reasons.
`Key_Launch5`	On X11 this key is mapped to XF86XK_Launch3 key for legacy reasons.
`Key_Launch6`	On X11 this key is mapped to XF86XK_Launch4 key for legacy reasons.
`Key_Launch7`	On X11 this key is mapped to XF86XK_Launch5 key for legacy reasons.
`Key_Launch8`	On X11 this key is mapped to XF86XK_Launch6 key for legacy reasons.
`Key_Launch9`	On X11 this key is mapped to XF86XK_Launch7 key for legacy reasons.
`Key_LaunchA`	On X11 this key is mapped to XF86XK_Launch8 key for legacy reasons.
`Key_LaunchB`	On X11 this key is mapped to XF86XK_Launch9 key for legacy reasons.
`Key_LaunchC`	On X11 this key is mapped to XF86XK_LaunchA key for legacy reasons.
`Key_LaunchD`	On X11 this key is mapped to XF86XK_LaunchB key for legacy reasons.
`Key_LaunchE`	On X11 this key is mapped to XF86XK_LaunchC key for legacy reasons.
`Key_LaunchF`	On X11 this key is mapped to XF86XK_LaunchD key for legacy reasons.
`Key_LaunchG`	On X11 this key is mapped to XF86XK_LaunchE key for legacy reasons.
`Key_LaunchH`	On X11 this key is mapped to XF86XK_LaunchF key for legacy reasons.
`Key_MonBrightnessUp`
`Key_MonBrightnessDown`
`Key_KeyboardLightOnOff`
`Key_KeyboardBrightnessUp`
`Key_KeyboardBrightnessDown`
`Key_PowerOff`
`Key_WakeUp`
`Key_Eject`
`Key_ScreenSaver`
`Key_WWW`
`Key_Memo`
`Key_LightBulb`
`Key_Shop`
`Key_History`
`Key_AddFavorite`
`Key_HotLinks`
`Key_BrightnessAdjust`
`Key_Finance`
`Key_Community`
`Key_AudioRewind`
`Key_BackForward`
`Key_ApplicationLeft`
`Key_ApplicationRight`
`Key_Book`
`Key_CD`
`Key_Calculator`	On X11 this key is not mapped for legacy reasons. Use Qt::Key_Launch1 instead.
`Key_ToDoList`
`Key_ClearGrab`
`Key_Close`
`Key_Copy`
`Key_Cut`
`Key_Display`
`Key_DOS`
`Key_Documents`
`Key_Excel`
`Key_Explorer`
`Key_Game`
`Key_Go`
`Key_iTouch`
`Key_LogOff`
`Key_Market`
`Key_Meeting`
`Key_MenuKB`
`Key_MenuPB`
`Key_MySites`
`Key_News`
`Key_OfficeHome`
`Key_Option`
`Key_Paste`
`Key_Phone`
`Key_Calendar`
`Key_Reply`
`Key_Reload`
`Key_RotateWindows`
`Key_RotationPB`
`Key_RotationKB`
`Key_Save`
`Key_Send`
`Key_Spell`
`Key_SplitScreen`
`Key_Support`
`Key_TaskPane`
`Key_Terminal`
`Key_Tools`
`Key_Travel`
`Key_Video`
`Key_Word`
`Key_Xfer`
`Key_ZoomIn`
`Key_ZoomOut`
`Key_Away`
`Key_Messenger`
`Key_WebCam`
`Key_MailForward`
`Key_Pictures`
`Key_Music`
`Key_Battery`
`Key_Bluetooth`
`Key_WLAN`
`Key_UWB`
`Key_AudioForward`
`Key_AudioRepeat`
`Key_AudioRandomPlay`
`Key_Subtitle`
`Key_AudioCycleTrack`
`Key_Time`
`Key_Hibernate`
`Key_View`
`Key_TopMenu`
`Key_PowerDown`
`Key_Suspend`
`Key_ContrastAdjust`
`Key_TouchpadToggle`
`Key_TouchpadOn`
`Key_TouchpadOff`
`Key_MicMute`
`Key_Red`
`Key_Green`
`Key_Yellow`
`Key_Blue`
`Key_ChannelUp`
`Key_ChannelDown`
`Key_Guide`
`Key_Info`
`Key_Settings`
`Key_MicVolumeUp`
`Key_MicVolumeDown`
`Key_New`
`Key_Open`
`Key_Find`
`Key_Undo`
`Key_Redo`
`Key_MediaLast`
`Key_unknown`
`Key_Call`	A key to answer or initiate a call (see Qt::Key_ToggleCallHangup for a key to toggle current call state)
`Key_Camera`	A key to activate the camera shutter. On Windows Runtime, the environment variable QT_QPA_ENABLE_CAMERA_KEYS must be set to receive the event.
`Key_CameraFocus`	A key to focus the camera. On Windows Runtime, the environment variable QT_QPA_ENABLE_CAMERA_KEYS must be set to receive the event.
`Key_Context1`
`Key_Context2`
`Key_Context3`
`Key_Context4`
`Key_Flip`
`Key_Hangup`	A key to end an ongoing call (see Qt::Key_ToggleCallHangup for a key to toggle current call state)
`Key_No`
`Key_Select`
`Key_Yes`
`Key_ToggleCallHangup`	A key to toggle the current call state (ie. either answer, or hangup) depending on current call state
`Key_VoiceDial`
`Key_LastNumberRedial`
`Key_Execute`
`Key_Printer`
`Key_Play`
`Key_Sleep`
`Key_Zoom`
`Key_Exit`
`Key_Cancel`

Orientation : enumeration

This type is used to signify an object's orientation.

Constant	Value
`Horizontal`
`Vertical`

uiLanguage : string

The uiLanguage holds the name of the language to be used for user interface string translations.

You can set the value freely and use it in bindings. By convention, an empty string means no translation from the language used in the source code is intended to occur.

This property was introduced in Qt Quick Ultralite 1.1.

Method Documentation

color rgba(real red, real green, real blue, real alpha)

Returns a color with the specified red, green, blue, and alpha components. All components should be in the range 0-1 (inclusive).

Available under certain Qt licenses.
Find out more.