`)
> Allows the control to be dragged as text.
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WebMessageDialog.Close
**Close**
> Removes the control from the page.
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WebMessageDialog.CSSClasses
**CSSClasses**
> Returns the instance of `WebCSSClasses` for this control allowing you to add CSS classes to and remove CSS classes from the control.
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WebMessageDialog.ExecuteJavaScript
**ExecuteJavaScript**(script As `String`)
> Executes the JavaScript passed. The JavaScript passed can call a JavaScript function in a WebPageSource control.
>
> The Xojo web framework uses EcmaScript 6 which is more strict than previous versions of JavaScript. For more details, see the [EcmaScript 6 documentation](https://www.ecma-international.org/ecma-262/6.0/).
>
> This code in the Pressed event of a Button displays an alert using JavaScript:
>
> ``` xojo
> Me.ExecuteJavaScript("alert('Hello!');")
> ```
>
> This code will select the text in a WebTextField (or WebTextArea):
>
> ``` xojo
> WebTextField1.ExecuteJavascript("document.getElementById('" + _
> WebTextField1.ControlID + "_inner').select();")
> ```
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WebMessageDialog.GotoURL
**GotoURL**(url As `String`, inNewWindow As `Boolean` = `False`)
> Opens the passed *url* in place of the current web page or downloads a file. If *inNewWindow* is `True`, the browser is asked to open the *url* in a new window.
>
> If the browser has popup windows disabled and *inNewWindow* is `True`, the method silently fails and the page is not shown.
>
> If *inNewWindow* is `False`, the running web app is replaced with the specified *url*. If you want to display an external web site within your web app, use the `WebHTMLViewer` control.
>
> Display a web site in a new popup window:
>
> ``` xojo
> Me.GotoURL("http://www.wikipedia.org", True)
> ```
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WebMessageDialog.Hide
**Hide**
> Hides the WebMessageDialog but does not destroy it.
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WebMessageDialog.SetFocus
**SetFocus**
> Sets the focus to the `Control`.
>
> This code checks for a required value when a button is pressed:
>
> ``` xojo
> If UserNameField.Text.IsEmpty Then
> MessageBox("Please enter your UserName.")
> UserNameField.SetFocus
> Return
> End If
> ```
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WebMessageDialog.Show
**Show**
> Displays the dialog.
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WebMessageDialog.Style
**Style** As `WebStyle`
> Returns the `WebStyle` for the control.
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**Style**(`Assigns` style As `WebStyle`)
> Assigns the *style* to the control.
>
> In this example, in any event of the control, set the text to bold:
>
> ``` xojo
> Var style As New WebStyle
> style.Bold = True
> Me.Style = style
> ```
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WebMessageDialog.UpdateBrowser
**UpdateBrowser**
> Forces the current values of the control to be sent to the browser.
>
> This method is useful when you are computing values in a loop and wish to update the browser immediately rather than wait until the current method ends.
>
> This code iterates through a `RowSet` of `database rows`, updates a `WebProgressBar` and then forces the updated `WebProgressBar` to be sent to the browser via UpdateBrowser.
>
> ``` xojo
> ProgressBar1.MaximumValue = SalesData.RowCount
> For Each row As DatabaseRow in SalesData
> AnalyzeSales(row)
> ProgressBar1.Value = ProgressBar1.Value + 1
> ProgressBar1.UpdateBrowser
> Next
> ```
## Event descriptions
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WebMessageDialog.ButtonPressed
**ButtonPressed**(button As `WebMessageDialogButton`)
> A button was pressed in the WebMessageDialog.
>
> You can determine which button was pressed by examining properties of the button parameter. In this example, the code compares the button parameter to the three different properties to see which one it is:
>
> ``` xojo
> Select Case button
> Case Me.ActionButton
> MessageBox("Action button pressed.")
> Case Me.AlternateActionButton
> MessageBox("Alternate Action button pressed.")
> Case Me.CancelButton
> MessageBox("Cancel button pressed.")
> End Select
> ```
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WebMessageDialog.Closed
**Closed**
> The control has been removed from the browser either because the page has closed or the control's Close method was called.
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WebMessageDialog.ContextualMenuSelected
**ContextualMenuSelected**(hitItem As `WebMenuItem`)
> Called when a contextual menu item is selected. This selected item is contained in *hitItem*.
>
> This code populates a contextual menu in the Opening event of a `WebToolbar`:
>
> ``` xojo
> Var menu As New WebMenuItem
>
> menu.AddMenuItem("One")
> menu.AddMenuItem("Two")
> menu.AddMenuItem("Three")
> Me.ContextualMenu = menu
> ```
>
> The menu selection is then handled by the ContextualMenuSelected event when the user right-clicks on the control. For example, it can be of the form:
>
> ``` xojo
> Select Case hitItem.Text
> Case "One"
> MessageBox("One")
> Case "Two"
> MessageBox("Two")
> Case "Three"
> MessageBox("Three")
> End Select
> ```
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WebMessageDialog.DropObject
**DropObject**(obj As `WebDragItem`, action As `WebDragItem.DragActionTypes`, x As `Integer`, y As `Integer`)
> Called when a dragged item is over a control that can accept it. The dragged item is contained in *obj* and the type of drag is identified by *action*.
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WebMessageDialog.Hidden
**Hidden**
> The control is about to become no longer visible. This could be because the page is being closed, is being replaced as the foreground page by another page or because the control or a parent control's Visible property has been set to `False`.
>
>
>
>
>
> Note
>
>
>
> This event is equivalent to the `DesktopWindow.Deactivated
` event in a desktop app.
>
>
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WebMessageDialog.Opening
**Opening**
> The control has been created and the page is opening but has not been sent to the browser yet.
>
> The Opening event handler can be used to initialize non-visual properties and settings for controls.
>
> In most cases, you should use the `Shown` event to initialize controls.
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WebMessageDialog.Shown
**Shown**
> The control has appeared on the currently displayed page. This could be because its parent page just finished loading, its parent page has come to the foreground or the control is now visible having been previously invisible because it or its parent control's Visible property has been set to `True`.
>
> Use the Shown event for initializing your controls or doing anything that would interact with other controls or user interface elements on the web page instead of the `Opening` event.
>
>
>
>
>
> Note
>
>
>
> This event is the web equivalent to the `DesktopWindow.Activated
` event.
>
>
`WebUIControl` parent class; `WebMessageDialogButton` class and `MessageBox` function.