Subclass and override UITextField in Monotouch

Question

I am trying to set the placeholder text for a UITextField to a different color. I found out that I need to subclass and override the drawPlaceholderInRect method.

iPhone UITextField - Change placeholder text color

(void) drawPlaceholderInRect:(CGRect)rect { [[UIColor blueColor] setFill]; [[self placeholder] drawInRect:rect withFont:[UIFont systemFontOfSize:16]]; } 

Here is what I still have, but I just can't figure out how to do it right. I got confused on the last line, as I don’t know how to map this to MonoTouch / C # objects.

 using System; using MonoTouch.UIKit; using MonoTouch.Foundation; using System.Drawing; namespace MyApp { [Register("CustomUITextField")] public class CustomUITextField:UITextField { public CustomUITextField () :base() { } public CustomUITextField (IntPtr handle) :base(handle) { } public override void DrawPlaceholder (RectangleF rect) { UIColor col = new UIColor(0,0,255.0,0.7); col.SetFill(); //Not sure what to put here base.DrawPlaceholder (rect);} } } 

Answer 1

The source code for ObjC does not call super (the base method), but drawInRect: Have you tried the same with MonoTouch? eg.

 public override void DrawPlaceholder (RectangleF rect) { using (UIFont font = UIFont.SystemFontOfSize (16)) using (UIColor col = new UIColor (0,0,255.0,0.7)) { col.SetFill (); base.DrawString (rect, font); } } 

Note: drawInRect:WithFont: displayed in the DrawString extension DrawString in C # (which can be called on any string ).