Even though AllowResizeByZoom is true, resizing form by zooming form will not work in these situations:
InnerPanelLayoutMode is InnerPanelLayoutMode.None.
ZoomPreviewMode is ZoomPreviewMode.NoPreview.
Pinch zoom when ZoomPreviewMode is ZoomPreviewMode.AlternativeContent.
Set ZoomFactor by SetZoomFactor(float,false).
The ownerForm's System.Windows.Forms.Form.IsMdiContainer is true.
The following code example shows how to use this property.
This code example is part of a larger example provided for the AllowPinchZoom property.