I am developing a ribbon form using Devespress and I need to let the end user to be able to customize the ribbon items so the I used the following code
RibbonControl1.AllowCustomization = True
RibbonControl1.ApplicationIcon = CType(resources.GetObject("RibbonControl1.ApplicationIcon"), System.Drawing.Bitmap)
I found an answer based on devexpress official support email.
this property will change the ribbon customization form icon.
Ex: I have added the following code to the MAIN form designer (the form that contains the ribbon)
RibbonControl1.OptionsCustomizationForm.FormIcon = CType(resources.GetObject("$this.Icon"), System.Drawing.Icon)
this will change the customization form's icon to the MAIN form's icon.