beginUpdate()
Prevents the widget from refreshing until the endUpdate() method is called.
The beginUpdate() and endUpdate() methods prevent the widget from excessive updates when you are changing multiple widget settings at once. After the beginUpdate() method is called, the widget does not update its UI until the endUpdate() method is called.
See Also
defaultOptions(rule)
defaultOptions is a static method that the widget class supports. The following code demonstrates how to specify default options for all instances of the ContextMenu widget in an application executed on the desktop.
jQuery
DevExpress.ui.dxContextMenu.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the ContextMenu options } });
Angular
import ContextMenu from "devextreme/ui/context_menu"; // ... export class AppComponent { constructor () { ContextMenu.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the ContextMenu options } }); } }
dispose()
The following code disposes of an ContextMenu instance that corresponds to the element ID (or reference variable in Angular) and removes the element from the DOM:
jQuery
$("#myContextMenu").dxContextMenu("dispose"); $("#myContextMenu").remove();
Angular
<dx-context-menu #contextMenuVar id="myContextMenu"></dx-context-menu>
import { ..., ViewChild } from "@angular/core"; import { DxContextMenuComponent } from "devextreme-angular"; // ... export class AppComponent { @ViewChild("contextMenuVar") contextMenu: DxContextMenuComponent; removeContextMenu (e) { this.contextMenu.instance.dispose(); document.getElementById("myContextMenu").remove(); } }
endUpdate()
Refreshes the widget after a call of the beginUpdate() method.
Main article: beginUpdate()
See Also
getInstance(element)
getInstance is a static method that the widget class supports. The following code demonstrates how to get the ContextMenu instance found in an element with the myContextMenu
ID:
// Modular approach import ContextMenu from "devextreme/ui/context_menu"; ... let element = document.getElementById("myContextMenu"); let instance = ContextMenu.getInstance(element) as ContextMenu; // Non-modular approach let element = document.getElementById("myContextMenu"); let instance = DevExpress.ui.dxContextMenu.getInstance(element);
See Also
hide()
A Promise that is resolved after the widget is hidden. It is a native Promise or a jQuery.Promise when you use jQuery.
option()
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
option(optionName)
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
option(optionName, optionValue)
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
option(options)
See Also
- Get and Set Options
- Call Methods: jQuery | Angular | AngularJS | Knockout | Vue | React | ASP.NET MVC
registerKeyHandler(key, handler)
A handler. Accepts the keydown event as the argument. It is a dxEvent or a jQuery.Event when you use jQuery.
The key argument accepts one of the following values:
- "backspace"
- "tab"
- "enter"
- "escape"
- "pageUp"
- "pageDown"
- "end"
- "home"
- "leftArrow"
- "upArrow"
- "rightArrow"
- "downArrow"
- "del"
- "space"
- "F"
- "A"
- "asterisk"
- "minus"
A custom handler for a key cancels the default handler for this key.
See Also
show()
A Promise that is resolved after the widget is shown. It is a native Promise or a jQuery.Promise when you use jQuery.
toggle(showing)
A Promise that is resolved after the widget is shown/hidden. It is a native Promise or a jQuery.Promise when you use jQuery.
If you have technical questions, please create a support ticket in the DevExpress Support Center.