Custom menu checkmarks

Here is some example code which sits in App. EnableMenuItems event and modifies the menu just before it's showing:
EventHandler Sub EnableMenuItems()
FileUnchecked.enable
// normally checked
FileChecked.checked = true
FileChecked.enable
FileDot.enable
FileDot.checked = true
// with bullet via constructor
dim n1 as new NSMenuItemMBS(fileDot)
n1.onStateImage = NSImageMBS.imageNamed("NSMenuItemBullet")
FileDiamond.enable
FileDiamond.checked = true
// with diamond via function
dim n2 as NSMenuItemMBS = NSMenuItemMBS.MenuItem(FileDiamond)
n2.onStateImage = NSImageMBS.imageNamed("NSMenuItemDiamond")
FileIcon.enable
FileIcon.checked = true
// with icon as checkmark
dim n3 as NSMenuItemMBS = NSMenuItemMBS.MenuItem(FileIcon)
dim icon as NSImageMBS = NSWorkspaceMBS.iconForFileType("com.xojo.project.binary")
icon.setSize(16,16)
n3.onStateImage = icon
FileCustomImage.enable
FileCustomImage.checked = true
// with custom image as checkmark
dim p as new Picture(32,32)
dim g as Graphics = p.Graphics
g.ForeColor = &c0000FF
g.FillOval 0, 0, p.Width, p.Height
dim n4 as NSMenuItemMBS = NSMenuItemMBS.MenuItem(FileCustomImage)
dim image as new NSImageMBS(p)
image.setSize(16,16)
n4.onStateImage = image
End EventHandler
The example project will be included soon with 18.3 plugins.
