BaseWindow
Create and control windows.
Process: Main
Note
BaseWindowprovides a flexible way to compose multiple web views in a single window. For windows with only a single, full-size web view, theBrowserWindowclass may be a simpler option.
This module cannot be used until the ready event of the app
module is emitted.
// In the main process.
const { BaseWindow, WebContentsView } = require('electron')
const win = new BaseWindow({ width: 800, height: 600 })
const leftView = new WebContentsView()
leftView.webContents.loadURL('https://electronjs.org')
win.contentView.addChildView(leftView)
const rightView = new WebContentsView()
rightView.webContents.loadURL('https://github.com/electron/electron')
win.contentView.addChildView(rightView)
leftView.setBounds({ x: 0, y: 0, width: 400, height: 600 })
rightView.setBounds({ x: 400, y: 0, width: 400, height: 600 })
Parent and child windows
By using parent option, you can create child windows:
const { BaseWindow } = require('electron')
const parent = new BaseWindow()
const child = new BaseWindow({ parent })
The child window will always show on top of the parent window.
Modal windows
A modal window is a child window that disables parent window. To create a modal
window, you have to set both the parent and modal options:
const { BaseWindow } = require('electron')
const parent = new BaseWindow()
const child = new BaseWindow({ parent, modal: true })
Platform notices
- On macOS modal windows will be displayed as sheets attached to the parent window.
- On macOS the child windows will keep the relative position to parent window when parent window moves, while on Windows and Linux child windows will not move.
- On Linux the type of modal windows will be changed to
dialog. - On Linux many desktop environments do not support hiding a modal window.
Class: BaseWindow
Create and control windows.
Process: Main
BaseWindow is an EventEmitter.
It creates a new BaseWindow with native properties as set by the options.
new BaseWindow([options])
When setting minimum or maximum window size with minWidth/maxWidth/
minHeight/maxHeight, it only constrains the users. It won't prevent you from
passing a size that does not follow size constraints to setBounds/setSize or
to the constructor of BrowserWindow.
The possible values and behaviors of the type option are platform dependent.
Possible values are:
- On Linux, possible types are
desktop,dock,toolbar,splash,notification.- The
desktoptype places the window at the desktop background window level (kCGDesktopWindowLevel - 1). However, note that a desktop window will not receive focus, keyboard, or mouse events. You can still use globalShortcut to receive input sparingly. - The
docktype creates a dock-like window behavior. - The
toolbartype creates a window with a toolbar appearance. - The
splashtype behaves in a specific way. It is not draggable, even if the CSS styling of the window's body contains -webkit-app-region: drag. This type is commonly used for splash screens. - The
notificationtype creates a window that behaves like a system notification.
- The
- On macOS, possible types are
desktop,textured,panel.- The
texturedtype adds metal gradient appearance (NSWindowStyleMaskTexturedBackground). - The
desktoptype places the window at the desktop background window level (kCGDesktopWindowLevel - 1). Note that desktop window will not receive focus, keyboard or mouse events, but you can useglobalShortcutto receive input sparingly. - The
paneltype enables the window to float on top of full-screened apps by adding theNSWindowStyleMaskNonactivatingPanelstyle mask,normally reserved for NSPanel, at runtime. Also, the window will appear on all spaces (desktops).
- The
- On Windows, possible type is
toolbar.
Instance Events
Objects created with new BaseWindow emit the following events:
Note: Some events are only available on specific operating systems and are labeled as such.
Event: 'close'
Returns:
eventEvent
Emitted when the window is going to be closed. It's emitted before the
beforeunload and unload event of the DOM. Calling event.preventDefault()
will cancel the close.
Usually you would want to use the beforeunload handler to decide whether the
window should be closed, which will also be called when the window is
reloaded. In Electron, returning any value other than undefined would cancel the
close. For example:
window.onbeforeunload = (e) => {
console.log('I do not want to be closed')
// Unlike usual browsers that a message box will be prompted to users, returning
// a non-void value will silently cancel the close.
// It is recommended to use the dialog API to let the user confirm closing the
// application.
e.returnValue = false
}
Note: There is a subtle difference between the behaviors of window.onbeforeunload = handler and window.addEventListener('beforeunload', handler). It is recommended to always set the event.returnValue explicitly, instead of only returning a value, as the former works more consistently within Electron.
Event: 'closed'
Emitted when the window is closed. After you have received this event you should remove the reference to the window and avoid using it any more.
Event: 'session-end' Windows
Emitted when window session is going to end due to force shutdown or machine restart or session log off.
Event: 'blur'
Emitted when the window loses focus.
Event: 'focus'
Emitted when the window gains focus.
Event: 'show'
Emitted when the window is shown.
Event: 'hide'
Emitted when the window is hidden.
Event: 'maximize'
Emitted when window is maximized.
Event: 'unmaximize'
Emitted when the window exits from a maximized state.
Event: 'minimize'
Emitted when the window is minimized.
Event: 'restore'
Emitted when the window is restored from a minimized state.
Event: 'will-resize' macOS Windows
Returns:
eventEventnewBoundsRectangle - Size the window is being resized to.detailsObjectedge(string) - The edge of the window being dragged for resizing. Can bebottom,left,right,top-left,top-right,bottom-leftorbottom-right.
Emitted before the window is resized. Calling event.preventDefault() will prevent the window from being resized.
Note that this is only emitted when the window is being resized manually. Resizing the window with setBounds/setSize will not emit this event.
The possible values and behaviors of the edge option are platform dependent. Possible values are:
- On Windows, possible values are
bottom,top,left,right,top-left,top-right,bottom-left,bottom-right. - On macOS, possible values are
bottomandright.- The value
bottomis used to denote vertical resizing. - The value
rightis used to denote horizontal resizing.
- The value
Event: 'resize'
Emitted after the window has been resized.
Event: 'resized' macOS Windows
Emitted once when the window has finished being resized.
This is usually emitted when the window has been resized manually. On macOS, resizing the window with setBounds/setSize and setting the animate parameter to true will also emit this event once resizing has finished.
Event: 'will-move' macOS Windows
Returns:
eventEventnewBoundsRectangle - Location the window is being moved to.
Emitted before the window is moved. On Windows, calling event.preventDefault() will prevent the window from being moved.
Note that this is only emitted when the window is being moved manually. Moving the window with setPosition/setBounds/center will not emit this event.
Event: 'move'
Emitted when the window is being moved to a new position.
Event: 'moved' macOS Windows
Emitted once when the window is moved to a new position.
Note: On macOS this event is an alias of move.
Event: 'enter-full-screen'
Emitted when the window enters a full-screen state.
Event: 'leave-full-screen'
Emitted when the window leaves a full-screen state.
Event: 'always-on-top-changed'
Returns:
eventEventisAlwaysOnTopboolean
Emitted when the window is set or unset to show always on top of other windows.
Event: 'app-command' Windows Linux
Returns:
eventEventcommandstring
Emitted when an App Command is invoked. These are typically related to keyboard media keys or browser commands, as well as the "Back" button built into some mice on Windows.
Commands are lowercased, underscores are replaced with hyphens, and the
APPCOMMAND_ prefix is stripped off.
e.g. APPCOMMAND_BROWSER_BACKWARD is emitted as browser-backward.
const { BaseWindow } = require('electron')
const win = new BaseWindow()
win.on('app-command', (e, cmd) => {
// Navigate the window back when the user hits their mouse back button
if (cmd === 'browser-backward') {
// Find the appropriate WebContents to navigate.
}
})
The following app commands are explicitly supported on Linux:
browser-backwardbrowser-forward
Event: 'swipe' macOS
Returns:
eventEventdirectionstring
Emitted on 3-finger swipe. Possible directions are up, right, down, left.
The method underlying this event is built to handle older macOS-style trackpad swiping,
where the content on the screen doesn't move with the swipe. Most macOS trackpads are not
configured to allow this kind of swiping anymore, so in order for it to emit properly the
'Swipe between pages' preference in System Preferences > Trackpad > More Gestures must be
set to 'Swipe with two or three fingers'.
Event: 'rotate-gesture' macOS
Returns:
eventEventrotationFloat
Emitted on trackpad rotation gesture. Continually emitted until rotation gesture is
ended. The rotation value on each emission is the angle in degrees rotated since
the last emission. The last emitted event upon a rotation gesture will always be of
value 0. Counter-clockwise rotation values are positive, while clockwise ones are
negative.
Event: 'sheet-begin' macOS
Emitted when the window opens a sheet.
Event: 'sheet-end' macOS
Emitted when the window has closed a sheet.
Event: 'new-window-for-tab' macOS
Emitted when the native new tab button is clicked.
Event: 'system-context-menu' Windows
Returns:
eventEventpointPoint - The screen coordinates the context menu was triggered at
Emitted when the system context menu is triggered on the window, this is
normally only triggered when the user right clicks on the non-client area
of your window. This is the window titlebar or any area you have declared
as -webkit-app-region: drag in a frameless window.
Calling event.preventDefault() will prevent the menu from being displayed.
Static Methods
The BaseWindow class has the following static methods:
BaseWindow.getAllWindows()
Returns BaseWindow[] - An array of all opened browser windows.
BaseWindow.getFocusedWindow()
Returns BaseWindow | null - The window that is focused in this application, otherwise returns null.
BaseWindow.fromId(id)
idInteger
Returns BaseWindow | null - The window with the given id.
Instance Properties
Objects created with new BaseWindow have the following properties:
const { BaseWindow } = require('electron')
// In this example `win` is our instance
const win = new BaseWindow({ width: 800, height: 600 })
win.id Readonly
A Integer property representing the unique ID of the window. Each ID is unique among all BaseWindow instances of the entire Electron application.
win.contentView
A View property for the content view of the window.
win.tabbingIdentifier macOS Readonly
A string (optional) property that is equal to the tabbingIdentifier passed to the BrowserWindow constructor or undefined if none was set.
win.autoHideMenuBar
A boolean property that determines whether the window menu bar should hide itself automatically. Once set, the menu bar will only show when users press the single Alt key.
If the menu bar is already visible, setting this property to true won't
hide it immediately.
win.simpleFullScreen
A boolean property that determines whether the window is in simple (pre-Lion) fullscreen mode.
win.fullScreen
A boolean property that determines whether the window is in fullscreen mode.
win.focusable Windows macOS
A boolean property that determines whether the window is focusable.
win.visibleOnAllWorkspaces macOS Linux
A boolean property that determines whether the window is visible on all workspaces.
Note: Always returns false on Windows.
win.shadow
A boolean property that determines whether the window has a shadow.
win.menuBarVisible Windows Linux
A boolean property that determines whether the menu bar should be visible.
Note: If the menu bar is auto-hide, users can still bring up the menu bar by pressing the single Alt key.
win.kiosk
A boolean property that determines whether the window is in kiosk mode.
win.documentEdited macOS
A boolean property that specifies whether the window’s document has been edited.
The icon in title bar will become gray when set to true.
win.representedFilename macOS
A string property that determines the pathname of the file the window represents,
and the icon of the file will show in window's title bar.
win.title
A string property that determines the title of the native window.
Note: The title of the web page can be different from the title of the native window.
win.minimizable macOS Windows
A boolean property that determines whether the window can be manually minimized by user.
On Linux the setter is a no-op, although the getter returns true.
win.maximizable macOS Windows
A boolean property that determines whether the window can be manually maximized by user.
On Linux the setter is a no-op, although the getter returns true.
win.fullScreenable
A boolean property that determines whether the maximize/zoom window button toggles fullscreen mode or
maximizes the window.
win.resizable
A boolean property that determines whether the window can be manually resized by user.
win.closable macOS Windows
A boolean property that determines whether the window can be manually closed by user.
On Linux the setter is a no-op, although the getter returns true.
win.movable macOS Windows
A boolean property that determines Whether the window can be moved by user.
On Linux the setter is a no-op, although the getter returns true.
win.excludedFromShownWindowsMenu macOS
A boolean property that determines whether the window is excluded from the application’s Windows menu. false by default.
const { Menu, BaseWindow } = require('electron')
const win = new BaseWindow({ height: 600, width: 600 })
const template = [
{
role: 'windowmenu'
}
]
win.excludedFromShownWindowsMenu = true
const menu = Menu.buildFromTemplate(template)
Menu.setApplicationMenu(menu)
win.accessibleTitle
A string property that defines an alternative title provided only to
accessibility tools such as screen readers. This string is not directly
visible to users.
Instance Methods
Objects created with new BaseWindow have the following instance methods:
Note: Some methods are only available on specific operating systems and are labeled as such.
win.setContentView(view)
viewView
Sets the content view of the window.
win.getContentView()
Returns View - The content view of the window.
win.destroy()
Force closing the window, the unload and beforeunload event won't be emitted
for the web page, and close event will also not be emitted
for this window, but it guarantees the closed event will be emitted.
win.close()
Try to close the window. This has the same effect as a user manually clicking the close button of the window. The web page may cancel the close though. See the close event.
win.focus()
Focuses on the window.
win.blur()
Removes focus from the window.
win.isFocused()
Returns boolean - Whether the window is focused.
win.isDestroyed()
Returns boolean - Whether the window is destroyed.
win.show()
Shows and gives focus to the window.
win.showInactive()
Shows the window but doesn't focus on it.
win.hide()
Hides the window.
win.isVisible()
Returns boolean - Whether the window is visible to the user in the foreground of the app.
win.isModal()
Returns boolean - Whether current window is a modal window.
win.maximize()
Maximizes the window. This will also show (but not focus) the window if it isn't being displayed already.
win.unmaximize()
Unmaximizes the window.
win.isMaximized()
Returns boolean - Whether the window is maximized.
win.minimize()
Minimizes the window. On some platforms the minimized window will be shown in the Dock.
win.restore()
Restores the window from minimized state to its previous state.
win.isMinimized()
Returns boolean - Whether the window is minimized.
win.setFullScreen(flag)
flagboolean
Sets whether the window should be in fullscreen mode.
Note: On macOS, fullscreen transitions take place asynchronously. If further actions depend on the fullscreen state, use the 'enter-full-screen' or 'leave-full-screen' events.
win.isFullScreen()
Returns boolean - Whether the window is in fullscreen mode.
win.setSimpleFullScreen(flag) macOS
flagboolean
Enters or leaves simple fullscreen mode.
Simple fullscreen mode emulates the native fullscreen behavior found in versions of macOS prior to Lion (10.7).
win.isSimpleFullScreen() macOS
Returns boolean - Whether the window is in simple (pre-Lion) fullscreen mode.
win.isNormal()
Returns boolean - Whether the window is in normal state (not maximized, not minimized, not in fullscreen mode).
win.setAspectRatio(aspectRatio[, extraSize])
aspectRatioFloat - The aspect ratio to maintain for some portion of the content view.extraSizeSize (optional) macOS - The extra size not to be included while maintaining the aspect ratio.
This will make a window maintain an aspect ratio. The extra size allows a developer to have space, specified in pixels, not included within the aspect ratio calculations. This API already takes into account the difference between a window's size and its content size.
Consider a normal window with an HD video player and associated controls. Perhaps there are 15 pixels of controls on the left edge, 25 pixels of controls on the right edge and 50 pixels of controls below the player. In order to maintain a 16:9 aspect ratio (standard aspect ratio for HD @1920x1080) within the player itself we would call this function with arguments of 16/9 and { width: 40, height: 50 }. The second argument doesn't care where the extra width and height are within the content view--only that they exist. Sum any extra width and height areas you have within the overall content view.
The aspect ratio is not respected when window is resized programmatically with
APIs like win.setSize.
To reset an aspect ratio, pass 0 as the aspectRatio value: win.setAspectRatio(0).
win.setBackgroundColor(backgroundColor)
backgroundColorstring - Color in Hex, RGB, RGBA, HSL, HSLA or named CSS color format. The alpha channel is optional for the hex type.
Examples of valid backgroundColor values:
- Hex
- #fff (shorthand RGB)
- #ffff (shorthand ARGB)
- #ffffff (RGB)
- #ffffffff (ARGB)
- RGB
rgb\(([\d]+),\s*([\d]+),\s*([\d]+)\)- e.g. rgb(255, 255, 255)
- RGBA
rgba\(([\d]+),\s*([\d]+),\s*([\d]+),\s*([\d.]+)\)- e.g. rgba(255, 255, 255, 1.0)
- HSL
hsl\((-?[\d.]+),\s*([\d.]+)%,\s*([\d.]+)%\)- e.g. hsl(200, 20%, 50%)
- HSLA
hsla\((-?[\d.]+),\s*([\d.]+)%,\s*([\d.]+)%,\s*([\d.]+)\)- e.g. hsla(200, 20%, 50%, 0.5)
- Color name
- Options are listed in SkParseColor.cpp
- Similar to CSS Color Module Level 3 keywords, but case-sensitive.
- e.g.
bluevioletorred
- e.g.
Sets the background color of the window. See Setting backgroundColor.
win.previewFile(path[, displayName]) macOS
pathstring - The absolute path to the file to preview with QuickLook. This is important as Quick Look uses the file name and file extension on the path to determine the content type of the file to open.displayNamestring (optional) - The name of the file to display on the Quick Look modal view. This is purely visual and does not affect the content type of the file. Defaults topath.
Uses Quick Look to preview a file at a given path.
win.closeFilePreview() macOS
Closes the currently open Quick Look panel.
win.setBounds(bounds[, animate])
boundsPartial<Rectangle>animateboolean (optional) macOS
Resizes and moves the window to the supplied bounds. Any properties that are not supplied will default to their current values.
const { BaseWindow } = require('electron')
const win = new BaseWindow()
// set all bounds properties
win.setBounds({ x: 440, y: 225, width: 800, height: 600 })
// set a single bounds property
win.setBounds({ width: 100 })
// { x: 440, y: 225, width: 100, height: 600 }
console.log(win.getBounds())
Note: On macOS, the y-coordinate value cannot be smaller than the Tray height. The tray height has changed over time and depends on the operating system, but is between 20-40px. Passing a value lower than the tray height will result in a window that is flush to the tray.
win.getBounds()
Returns Rectangle - The bounds of the window as Object.
Note: On macOS, the y-coordinate value returned will be at minimum the Tray height. For example, calling win.setBounds({ x: 25, y: 20, width: 800, height: 600 }) with a tray height of 38 means that win.getBounds() will return { x: 25, y: 38, width: 800, height: 600 }.
win.getBackgroundColor()
Returns string - Gets the background color of the window in Hex (#RRGGBB) format.
Note: The alpha value is not returned alongside the red, green, and blue values.
win.setContentBounds(bounds[, animate])
boundsRectangleanimateboolean (optional) macOS
Resizes and moves the window's client area (e.g. the web page) to the supplied bounds.
win.getContentBounds()
Returns Rectangle - The bounds of the window's client area as Object.
win.getNormalBounds()
Returns Rectangle - Contains the window bounds of the normal state
Note: whatever the current state of the window : maximized, minimized or in fullscreen, this function always returns the position and size of the window in normal state. In normal state, getBounds and getNormalBounds returns the same Rectangle.
win.setEnabled(enable)
enableboolean
Disable or enable the window.
win.isEnabled()
Returns boolean - whether the window is enabled.
win.setSize(width, height[, animate])
widthIntegerheightIntegeranimateboolean (optional) macOS
Resizes the window to width and height. If width or height are below any set minimum size constraints the window will snap to its minimum size.
win.getSize()
Returns Integer[] - Contains the window's width and height.
win.setContentSize(width, height[, animate])
widthIntegerheightIntegeranimateboolean (optional) macOS
Resizes the window's client area (e.g. the web page) to width and height.
win.getContentSize()
Returns Integer[] - Contains the window's client area's width and height.
win.setMinimumSize(width, height)
widthIntegerheightInteger
Sets the minimum size of window to width and height.
win.getMinimumSize()
Returns Integer[] - Contains the window's minimum width and height.
win.setMaximumSize(width, height)
widthIntegerheightInteger
Sets the maximum size of window to width and height.
win.getMaximumSize()
Returns Integer[] - Contains the window's maximum width and height.
win.setResizable(resizable)
resizableboolean
Sets whether the window can be manually resized by the user.
win.isResizable()
Returns boolean - Whether the window can be manually resized by the user.
win.setMovable(movable) macOS Windows
movableboolean
Sets whether the window can be moved by user. On Linux does nothing.
win.isMovable() macOS Windows
Returns boolean - Whether the window can be moved by user.
On Linux always returns true.
win.setMinimizable(minimizable) macOS Windows
minimizableboolean
Sets whether the window can be manually minimized by user. On Linux does nothing.
win.isMinimizable() macOS Windows
Returns boolean - Whether the window can be manually minimized by the user.
On Linux always returns true.
win.setMaximizable(maximizable) macOS Windows
maximizableboolean
Sets whether the window can be manually maximized by user. On Linux does nothing.
win.isMaximizable() macOS Windows
Returns boolean - Whether the window can be manually maximized by user.
On Linux always returns true.
win.setFullScreenable(fullscreenable)
fullscreenableboolean
Sets whether the maximize/zoom window button toggles fullscreen mode or maximizes the window.
win.isFullScreenable()
Returns boolean - Whether the maximize/zoom window button toggles fullscreen mode or maximizes the window.
win.setClosable(closable) macOS Windows
closableboolean
Sets whether the window can be manually closed by user. On Linux does nothing.
win.isClosable() macOS Windows
Returns boolean - Whether the window can be manually closed by user.
On Linux always returns true.
win.setHiddenInMissionControl(hidden) macOS
hiddenboolean
Sets whether the window will be hidden when the user toggles into mission control.
win.isHiddenInMissionControl() macOS
Returns boolean - Whether the window will be hidden when the user toggles into mission control.
win.setAlwaysOnTop(flag[, level][, relativeLevel])
flagbooleanlevelstring (optional) macOS Windows - Values includenormal,floating,torn-off-menu,modal-panel,main-menu,status,pop-up-menu,screen-saver, anddockfloatingwhenflagis true. Thelevelis reset tonormalwhen the flag is false. Note that fromfloatingtostatusincluded, the window is placed below the Dock on macOS and below the taskbar on Windows. Frompop-up-menuto a higher it is shown above the Dock on macOS and above the taskbar on Windows. See the macOS docs for more details.relativeLevelInteger (optional) macOS - The number of layers higher to set this window relative to the givenlevel. The default is0. Note that Apple discourages setting levels higher than 1 abovescreen-saver.
Sets whether the window should show always on top of other windows. After setting this, the window is still a normal window, not a toolbox window which can not be focused on.
win.isAlwaysOnTop()
Returns boolean - Whether the window is always on top of other windows.
win.moveAbove(mediaSourceId)
mediaSourceIdstring - Window id in the format of DesktopCapturerSource's id. For example "window:1869:0".
Moves window above the source window in the sense of z-order. If the
mediaSourceId is not of type window or if the window does not exist then
this method throws an error.
win.moveTop()
Moves window to top(z-order) regardless of focus
win.center()
Moves window to the center of the screen.
win.setPosition(x, y[, animate])
xIntegeryIntegeranimateboolean (optional) macOS
Moves window to x and y.
win.getPosition()
Returns Integer[] - Contains the window's current position.
win.setTitle(title)
titlestring
Changes the title of native window to title.
win.getTitle()
Returns string - The title of the native window.
Note: The title of the web page can be different from the title of the native window.
win.setSheetOffset(offsetY[, offsetX]) macOS
offsetYFloatoffsetXFloat (optional)
Changes the attachment point for sheets on macOS. By default, sheets are attached just below the window frame, but you may want to display them beneath a HTML-rendered toolbar. For example:
const { BaseWindow } = require('electron')
const win = new BaseWindow()
const toolbarRect = document.getElementById('toolbar').getBoundingClientRect()
win.setSheetOffset(toolbarRect.height)
win.flashFrame(flag)
History
| Version(s) | Changes |
|---|---|
None |
|
None | API ADDED |
flagboolean
Starts or stops flashing the window to attract user's attention.
win.setSkipTaskbar(skip) macOS Windows
skipboolean
Makes the window not show in the taskbar.
win.setKiosk(flag)
flagboolean
Enters or leaves kiosk mode.
win.isKiosk()
Returns boolean - Whether the window is in kiosk mode.
win.isTabletMode() Windows
Returns boolean - Whether the window is in Windows 10 tablet mode.
Since Windows 10 users can use their PC as tablet, under this mode apps can choose to optimize their UI for tablets, such as enlarging the titlebar and hiding titlebar buttons.
This API returns whether the window is in tablet mode, and the resize event
can be be used to listen to changes to tablet mode.
win.getMediaSourceId()
Returns string - Window id in the format of DesktopCapturerSource's id. For example "window:1324:0".
More precisely the format is window:id:other_id where id is HWND on
Windows, CGWindowID (uint64_t) on macOS and Window (unsigned long) on
Linux. other_id is used to identify web contents (tabs) so within the same
top level window.
win.getNativeWindowHandle()
Returns Buffer - The platform-specific handle of the window.
The native type of the handle is HWND on Windows, NSView* on macOS, and
Window (unsigned long) on Linux.
win.hookWindowMessage(message, callback) Windows
messageIntegercallbackFunctionwParamBuffer - ThewParamprovided to the WndProclParamBuffer - ThelParamprovided to the WndProc
Hooks a windows message. The callback is called when
the message is received in the WndProc.
win.isWindowMessageHooked(message) Windows
messageInteger
Returns boolean - true or false depending on whether the message is hooked.
win.unhookWindowMessage(message) Windows
messageInteger
Unhook the window message.
win.unhookAllWindowMessages() Windows
Unhooks all of the window messages.
win.setRepresentedFilename(filename) macOS
filenamestring
Sets the pathname of the file the window represents, and the icon of the file will show in window's title bar.
win.getRepresentedFilename() macOS
Returns string - The pathname of the file the window represents.
win.setDocumentEdited(edited) macOS
editedboolean
Specifies whether the window’s document has been edited, and the icon in title
bar will become gray when set to true.
win.isDocumentEdited() macOS
Returns boolean - Whether the window's document has been edited.
win.setMenu(menu) Linux Windows
menuMenu | null
Sets the menu as the window's menu bar.
win.removeMenu() Linux Windows
Remove the window's menu bar.
win.setProgressBar(progress[, options])
progressDouble
Sets progress value in progress bar. Valid range is [0, 1.0].
Remove progress bar when progress < 0; Change to indeterminate mode when progress > 1.
On Linux platform, only supports Unity desktop environment, you need to specify
the *.desktop file name to desktopName field in package.json. By default,
it will assume {app.name}.desktop.
On Windows, a mode can be passed. Accepted values are none, normal,
indeterminate, error, and paused. If you call setProgressBar without a
mode set (but with a value within the valid range), normal will be assumed.
win.setOverlayIcon(overlay, description) Windows
overlayNativeImage | null - the icon to display on the bottom right corner of the taskbar icon. If this parameter isnull, the overlay is cleareddescriptionstring - a description that will be provided to Accessibility screen readers
Sets a 16 x 16 pixel overlay onto the current taskbar icon, usually used to convey some sort of application status or to passively notify the user.
win.invalidateShadow() macOS
Invalidates the window shadow so that it is recomputed based on the current window shape.
BaseWindows that are transparent can sometimes leave behind visual artifacts on macOS.
This method can be used to clear these artifacts when, for example, performing an animation.
win.setHasShadow(hasShadow)
hasShadowboolean
Sets whether the window should have a shadow.
win.hasShadow()
Returns boolean - Whether the window has a shadow.
win.setOpacity(opacity) Windows macOS
opacitynumber - between 0.0 (fully transparent) and 1.0 (fully opaque)
Sets the opacity of the window. On Linux, does nothing. Out of bound number values are clamped to the [0, 1] range.
win.getOpacity()
Returns number - between 0.0 (fully transparent) and 1.0 (fully opaque). On
Linux, always returns 1.
win.setShape(rects) Windows Linux Experimental
rectsRectangle[] - Sets a shape on the window. Passing an empty list reverts the window to being rectangular.
Setting a window shape determines the area within the window where the system permits drawing and user interaction. Outside of the given region, no pixels will be drawn and no mouse events will be registered. Mouse events outside of the region will not be received by that window, but will fall through to whatever is behind the window.
win.setThumbarButtons(buttons) Windows
buttonsThumbarButton[]
Returns boolean - Whether the buttons were added successfully
Add a thumbnail toolbar with a specified set of buttons to the thumbnail image
of a window in a taskbar button layout. Returns a boolean object indicates
whether the thumbnail has been added successfully.
The number of buttons in thumbnail toolbar should be no greater than 7 due to the limited room. Once you setup the thumbnail toolbar, the toolbar cannot be removed due to the platform's limitation. But you can call the API with an empty array to clean the buttons.
The buttons is an array of Button objects:
ButtonObjecticonNativeImage - The icon showing in thumbnail toolbar.clickFunctiontooltipstring (optional) - The text of the button's tooltip.flagsstring[] (optional) - Control specific states and behaviors of the button. By default, it is['enabled'].
The flags is an array that can include following strings:
enabled- The button is active and available to the user.disabled- The button is disabled. It is present, but has a visual state indicating it will not respond to user action.dismissonclick- When the button is clicked, the thumbnail window closes immediately.nobackground- Do not draw a button border, use only the image.hidden- The button is not shown to the user.noninteractive- The button is enabled but not interactive; no pressed button state is drawn. This value is intended for instances where the button is used in a notification.
win.setThumbnailClip(region) Windows
regionRectangle - Region of the window
Sets the region of the window to show as the thumbnail image displayed when
hovering over the window in the taskbar. You can reset the thumbnail to be
the entire window by specifying an empty region:
{ x: 0, y: 0, width: 0, height: 0 }.
win.setThumbnailToolTip(toolTip) Windows
toolTipstring
Sets the toolTip that is displayed when hovering over the window thumbnail in the taskbar.
win.setAppDetails(options) Windows
Sets the properties for the window's taskbar button.
Note: relaunchCommand and relaunchDisplayName must always be set
together. If one of those properties is not set, then neither will be used.
win.setIcon(icon) Windows Linux
iconNativeImage | string
Changes window icon.
win.setWindowButtonVisibility(visible) macOS
visibleboolean
Sets whether the window traffic light buttons should be visible.
win.setAutoHideMenuBar(hide) Windows Linux
hideboolean
Sets whether the window menu bar should hide itself automatically. Once set the
menu bar will only show when users press the single Alt key.
If the menu bar is already visible, calling setAutoHideMenuBar(true) won't hide it immediately.
win.isMenuBarAutoHide() Windows Linux
Returns boolean - Whether menu bar automatically hides itself.
win.setMenuBarVisibility(visible) Windows Linux
visibleboolean
Sets whether the menu bar should be visible. If the menu bar is auto-hide, users can still bring up the menu bar by pressing the single Alt key.
win.isMenuBarVisible() Windows Linux
Returns boolean - Whether the menu bar is visible.
win.setVisibleOnAllWorkspaces(visible[, options]) macOS Linux
visibleboolean
Sets whether the window should be visible on all workspaces.
Note: This API does nothing on Windows.
win.isVisibleOnAllWorkspaces() macOS Linux
Returns boolean - Whether the window is visible on all workspaces.
Note: This API always returns false on Windows.
win.setIgnoreMouseEvents(ignore[, options])
ignoreboolean
Makes the window ignore all mouse events.
All mouse events happened in this window will be passed to the window below this window, but if this window has focus, it will still receive keyboard events.
win.setContentProtection(enable) macOS Windows
enableboolean
Prevents the window contents from being captured by other apps.
On macOS it sets the NSWindow's sharingType to NSWindowSharingNone.
On Windows it calls SetWindowDisplayAffinity with WDA_EXCLUDEFROMCAPTURE.
For Windows 10 version 2004 and up the window will be removed from capture entirely,
older Windows versions behave as if WDA_MONITOR is applied capturing a black window.
win.setFocusable(focusable) macOS Windows
focusableboolean
Changes whether the window can be focused.
On macOS it does not remove the focus from the window.
win.isFocusable() macOS Windows
Returns boolean - Whether the window can be focused.
win.setParentWindow(parent)
parentBaseWindow | null
Sets parent as current window's parent window, passing null will turn
current window into a top-level window.
win.getParentWindow()
Returns BaseWindow | null - The parent window or null if there is no parent.
win.getChildWindows()
Returns BaseWindow[] - All child windows.
win.setAutoHideCursor(autoHide) macOS
autoHideboolean
Controls whether to hide cursor when typing.
win.selectPreviousTab() macOS
Selects the previous tab when native tabs are enabled and there are other tabs in the window.
win.selectNextTab() macOS
Selects the next tab when native tabs are enabled and there are other tabs in the window.
win.showAllTabs() macOS
Shows or hides the tab overview when native tabs are enabled.
win.mergeAllWindows() macOS
Merges all windows into one window with multiple tabs when native tabs are enabled and there is more than one open window.
win.moveTabToNewWindow() macOS
Moves the current tab into a new window if native tabs are enabled and there is more than one tab in the current window.
win.toggleTabBar() macOS
Toggles the visibility of the tab bar if native tabs are enabled and there is only one tab in the current window.
win.addTabbedWindow(baseWindow) macOS
baseWindowBaseWindow
Adds a window as a tab on this window, after the tab for the window instance.
win.setVibrancy(type) macOS
typestring | null - Can betitlebar,selection,menu,popover,sidebar,header,sheet,window,hud,fullscreen-ui,tooltip,content,under-window, orunder-page. See the macOS documentation for more details.
Adds a vibrancy effect to the window. Passing null or an empty string
will remove the vibrancy effect on the window.
win.setBackgroundMaterial(material) Windows
materialstringauto- Let the Desktop Window Manager (DWM) automatically decide the system-drawn backdrop material for this window. This is the default.none- Don't draw any system backdrop.mica- Draw the backdrop material effect corresponding to a long-lived window.acrylic- Draw the backdrop material effect corresponding to a transient window.tabbed- Draw the backdrop material effect corresponding to a window with a tabbed title bar.
This method sets the browser window's system-drawn background material, including behind the non-client area.
See the Windows documentation for more details.
Note: This method is only supported on Windows 11 22H2 and up.
win.setWindowButtonPosition(position) macOS
positionPoint | null
Set a custom position for the traffic light buttons in frameless window.
Passing null will reset the position to default.
win.getWindowButtonPosition() macOS
Returns Point | null - The custom position for the traffic light buttons in
frameless window, null will be returned when there is no custom position.
win.setTouchBar(touchBar) macOS
touchBarTouchBar | null
Sets the touchBar layout for the current window. Specifying null or
undefined clears the touch bar. This method only has an effect if the
machine has a touch bar.
Note: The TouchBar API is currently experimental and may change or be removed in future Electron releases.
win.setTitleBarOverlay(options) Windows Linux
On a Window with Window Controls Overlay already enabled, this method updates the style of the title bar overlay.
On Linux, the symbolColor is automatically calculated to have minimum accessible contrast to the color if not explicitly set.