swift: cannot assign value of type UIView to type CGRect

In the for loop I am trying to place images from arrayOfImages in rectangles that I've created with CGRect.

But after that I want to use class MyClassView which inherits UIView, because I have there additional functions that I want to apply on my rectangle images that I've just created, but I am getting the error

cannot assign value of type UIView to type CGRect

let widthRect = 50

func createMyRects(){

    let insetSize = CGRectInset(self.view.bounds, CGFloat(Int(widthRect)), CGFloat(Int(widthRect))).size

    for i in 0...arrayOfImages.count-1{

        let pointX = CGFloat(UInt(arc4random() % UInt32(UInt(insetSize.width))))
        let pointY = CGFloat(UInt(arc4random() % UInt32(UInt(insetSize.height))))
        let showImages = UIImageView(image: arrayOfImages[i])
        let newFrame = CGRect(x: pointX, y: pointY, width: CGFloat(widthRect), height: CGFloat(widthRect))
        //showImages.frame = newFrame

        let newFrame2 = MyClassView(frame: newFrame)

        showImages.frame = newFrame2  //here it says: cannot assign value of type UIView view to type CGRect 
        view.addSubview(showImages)

    }
}