Self.Image.Frame.Width = 20 Give Get Only Property Error

Cannot assign to property: 'width' is a get-only property

You need to set the width of the frame's size property.

cell.reciverMsg.frame.size.width = 20

The width property of frame is just a read-only convenience. See the documentation for CGRect for details.

SwiftUI Pass Value from Geometry Reader to Function

Is there a way to pass the value calculated by GeometryReader to a function?

Yes, you can do this. The var metrics is a GeometryProxy, so function signature should be like in the following example

private func resizedImage(for metrics: GeometryProxy) -> some View {
    self.image
       .resizable()
       .frame(width:  (metrics.size.height - 10) * 0.561403509 , height: metrics.size.height - 10, alignment: .top)
       .clipped()
}

so your usage

GeometryReader { metrics in
    ZStack{
       self.resizedImage(for: metrics)
    }
}

Update: for changed request

Assuming you have in child view binding as

@Binding var cropSize: CGSize

the above function can be modified as follow

private func resizedImage(for metrics: GeometryProxy) -> some View {
    let size = CGSize(width: (metrics.size.height - 10) * 0.561403509, 
                           height: metrics.size.height - 10)
    self.cropSize = size
    return self.image
       .resizable()
       .frame(width: size.width, height: size.height, alignment: .top)
       .clipped()
}

UIImageView frame not placing correctly on the parent ImageView

You're using frame sizes before the frames are finished being set by auto-layout.

I'd suggest using constraints, but if you want to stick to frame coordinates...

• add the "round plus" icon imageView in viewDidLoad()
• set its frame.origin in viewDidLayoutSubviews() or viewDidAppear()

Incorrect frame size inside UITextfield Subclass in swift3

TextField is getting it's frame from the storyboard so you are getting incorrect frame size while setting cornerRadius.

You have error while setting the corner radius.

 self.layer.cornerRadius = self.frame.size.height / 2

Replace this with

self.layer.cornerRadius = 2

Or also better if you override drawRect method and set cornerRadius as

override func draw(_ rect: CGRect) {

     self.layer.cornerRadius = rect.size.height / 2

}

Resize image in asp.net Size readonly error

It is read-only; you'll have to create a new bitmap from it. Try this: -

internal static Image ScaleByPercent(Image image, Size size, float percent)
{
    int sourceWidth  = image.Width,
        sourceHeight = image.Height;

    int destWidth  = (int)(sourceWidth * percent),
        destHeight = (int)(sourceHeight * percent);

    if (destWidth <= 0)
    {
        destWidth = 1;
    }

    if (destHeight <= 0)
    {
        destHeight = 1;
    }

    var resizedImage = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb);
    resizedImage.SetResolution(image.HorizontalResolution, image.VerticalResolution);

    // get handle to new bitmap
    using (var graphics = Graphics.FromImage(resizedImage))
    {
        InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

        // create a rect covering the destination area
        var destRect = new Rectangle(0, 0, destWidth, destHeight);
        var brush    = new SolidBrush(drawing.Color.White);
        graphics.FillRectangle(brush, destRect);

        // draw the source image to the destination rect
        graphics.DrawImage(image,
                            destRect,
                            new Rectangle(0, 0, sourceWidth, sourceHeight),
                            GraphicsUnit.Pixel);
    }

    return resizedImage;
}

This is from a site I have in production; if you want I can send you the code that works out how to keep the correct aspect ratio when resizing (i.e. what gets passed in the 'size' parameter)

Hope that helps

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