Can I create Icons on the fly in WPF?

Question

Since I am not getting anywhere with my previous question, I would like to know, are there any ways I can create icons on the fly on WPF?

he probably means generating an image using xaml (likely data driven), and saving it as a bitmap — Joel Martinez, May 11 '11 at 15:01
I mean on demand, Lets say I want to display progress status in Tray icon, rather displaying tool tip, I want to display an icon with display status on top the icon. — iraSenthil, May 11 '11 at 15:07

score 1 · Answer 1 · answered May 11 '11 at 14:57

1

You don't need WPF.

Usign GDI+ (System.Drawing.dll), you can create a 16x16 Bitmap, then call Icon.FromHandle(bitmap.GetHicon()).

answered May 11 '11 at 14:57

SLaks

868,454
176
1,908
1,964

Are you saying I can't do it in WPF? – iraSenthil May 11 '11 at 14:58
No; I'm saying that you _can_ do it in WinForms. – SLaks May 11 '11 at 15:15
1

Why take an additional dependency on System.Drawing and do expensive WPF/GDI interop if you can do it natively in WPF only. – bitbonk May 11 '11 at 15:24
@bitbonk: In his original question, it sounded like he wanted GDI+. WPF doesn't have a NotifyIcon, so he needs GDI+ and WinForms anyway. – SLaks May 11 '11 at 15:26
@SLaks, I am looking for a solution in WPF. – iraSenthil May 11 '11 at 15:27
Ooops, I didn't see he actually wants a NotityIcon. This will involve win32 interop in any case, I think. – bitbonk May 11 '11 at 15:35

score 0 · Answer 2 · answered May 11 '11 at 15:22

0

You can use WritableBitmap for this.

answered May 11 '11 at 15:22

bitbonk

48,890
37
186
278

@iraSenthil here is a per pixel drawing method http://tipsandtricks.runicsoft.com/CSharp/WpfPixelDrawing.html – Code0987 May 15 '11 at 18:07
@Neeraj How do I add text and Image? – iraSenthil May 19 '11 at 20:08

score 0 · Answer 3 · answered May 11 '11 at 15:42

0

You can use Taskbar icon progress bar...Sure U have seen, most of the application if doing any scanning or progress things, it displays progress actions on Icon.

Do this in your main form where u included the Icon

<Window x:Class="CCTrayHelper.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   
    Icon="/CCTrayHelper;component/Images/CCTrayHelperIcon.png">

<Window.TaskbarItemInfo>
    <TaskbarItemInfo />
</Window.TaskbarItemInfo>

Trig it from code behind

 private void OnProgress(object sender, EventArgs args)
    {
        Dispatcher.Invoke(DispatcherPriority.Send, (Action)delegate() { TaskbarItemInfo.ProgressState = TaskbarItemProgressState.None; });
        // Use here your progress type
    }

answered May 11 '11 at 15:42

PawanS

7,033
14
43
71

I need status on tray icon, anyway thanks for the suggestion. – iraSenthil May 12 '11 at 04:15
Yes!! it works only for Windows 7......... @iraSenthil, u means something Like Messenger Icon where if user is busy or not available then it shows some other animation or image over Icon.. right?? – PawanS May 12 '11 at 07:10
Closer, But I want to add some text instead of some limited icons. – iraSenthil May 12 '11 at 15:00

score 0 · Accepted Answer · answered May 19 '11 at 20:13

This is what I ended up doing, I don't fully understand the details, if you find anything that can be improved, please do comment. Thanks for all the answers and comments.

 public static ImageSource GetIconWithText(int digit)
 {
     BitmapImage myBitmapImage = new BitmapImage(new Uri(@"Images\PomoDomo.ico", 
         UriKind.RelativeOrAbsolute));

     DrawingVisual drawingVisual = new DrawingVisual();

     using (DrawingContext drawingContext = drawingVisual.RenderOpen())
     {
         // Draw image
         drawingContext.DrawImage(myBitmapImage, new Rect(0, 0, myBitmapImage.Width, 
             myBitmapImage.Height));

         var typeFace = new Typeface(new FontFamily("Verdana"), FontStyles.Normal, 
             FontWeights.ExtraBold, FontStretches.UltraCondensed);
         var formatedText = new FormattedText(digit.ToString(),
               CultureInfo.InvariantCulture,
               FlowDirection.LeftToRight,
               typeFace,
               40, 
               System.Windows.Media.Brushes.White);

         //Center the text on Image
         int pointY = (int)(myBitmapImage.Height - formatedText.Height) / 2;
         int pointX = (int)(myBitmapImage.Width - formatedText.Width) / 2;

         drawingContext.DrawText(formatedText, new Point(pointX, pointY));
     }

     RenderTargetBitmap finalBitmap = new RenderTargetBitmap((int)myBitmapImage.Width, 
         (int)myBitmapImage.Height, myBitmapImage.DpiX, myBitmapImage.DpiY, 
         PixelFormats.Pbgra32);
     finalBitmap.Render(drawingVisual);
     return finalBitmap;
 }

 private static void SaveImage(RenderTargetBitmap returnBitmap, string pngFileName)
 {
     string fileName = string.Format("{0}.png", pngFileName)
     PngBitmapEncoder image = new PngBitmapEncoder();
     image.Frames.Add(BitmapFrame.Create(returnBitmap));
     using (Stream fs = File.Create(fileName))
     {
         image.Save(fs);
     }
 }

score 0 · Answer 5 · edited May 23 '17 at 12:04

0

You can find a method here and here to render text on writeablebitmap

edited May 23 '17 at 12:04

Community

1
1

answered May 20 '11 at 08:18

Code0987

2,598
3
33
51

Can I create Icons on the fly in WPF?

5 Answers5