mobileFX WebKitX CEF3 ActiveX 4.x
WebKitXCEF3Lib ActiveX Control / WebKitXCEF3 Object / Zoom Property
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    Zoom Property
    In This Topic

    Sets or retrieves the scale factor of the HTML rendering window. Default is 1.0.

    Property type
    Read-write property
    Visual Basic
    Public Property Zoom As Double

    Zoom property affects the scale of the HTML rendering output bitmap without overwriting DOM values such as CSS3 scale transformation or body zoom attribute. You should change the zoom scale by 20% intervals, that is by +/- 0.2, with lowest acceptable scale factor value being 0.2.

    Zoom performance and function is affected by DPI awareness of your executable and you should consider making test on both normal-dpi and high-dpi screens. There is no generalized guide on how to use Zoom property as it greatly depends on your application's objectives and the combination of your script libraries and the dpi-awareness of your executable.

    Private Sub WebKitX1_OnKeyPress(ByVal BrowserID As Long, ByVal Modifiers As Long, ByVal WindowsKeyCode As Long, ByVal NativeKeyCode As Long, ByVal IsSystemKey As Boolean, ByVal EventCharacter As String, ByVal UnmodifiedCharacter As String, ByVal IsFocusOnEditableField As Boolean)
        Dim Zoom As Double
        If WindowsKeyCode = 116 Then
            WebKitX1.Reload True
        End If
        Select Case EventCharacter
        ' Set zoom to 100%
        Case "=":
            WebKitX1.Zoom = 1
        ' Increase zoom by +20%
        Case "+":
            Zoom = WebKitX1.Zoom
            WebKitX1.Zoom = Zoom + 0.2
        ' Decrease zoom by -20%
        Case "-":
            Zoom = WebKitX1.Zoom
            WebKitX1.Zoom = Zoom - 0.2
        Case "*"
            WebKitX1.Eval "'transform:scale3d(0.5, 0.5, 0.5);'"
        End Select
    End Sub
    See Also