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In WPF how to give the InteropBitmap drawing font

Manoj Bhatt 2869 23-Sep-2013

ex winform：

Graphics g = Graphics.FromImage(newimg);

String str = "hello world";

Font font = new Font("Arial", 30);

SolidBrush sbrush = new SolidBrush(Color.Black);

g.DrawString(str, font, sbrush, new PointF(100, 120));

In the WPF on how the InteropBitmap to do the same thing?

wpf wpf 
Updated on 23-Sep-2013
Manoj Bhatt

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1 Answers

Sumit Kesarwani

Sumit Kesarwani

23-Sep-2013
Hi Manoj,

The graphics object in Wpf is different than Winforms since Wpf uses Vector Graphics. In Wpf you will be using a DrawingVisual, DrawingContext, FormattedText and a BitmapImage, the DrawingContext is equivalent to the Graphics object in Winforms. This is a quick example to show what I mean.

public MainWindow()
{
    InitializeComponent();
    Grid myGrid = new Grid();
    BitmapImage bmp = new BitmapImage(new Uri(@"C:\temp\test.jpg")); //Use the path to your Image
    DrawingVisual dv = new DrawingVisual();
    DrawingContext dc = dv.RenderOpen();
    dc.DrawImage(bmp, new Rect(100, 100, 300, 300));
    dc.DrawText(new FormattedText("Hello World",
                CultureInfo.GetCultureInfo("en-us"),
                FlowDirection.LeftToRight,
                new Typeface("Arial"),
                30, System.Windows.Media.Brushes.Black),
                new System.Windows.Point(100, 120));
    dc.Close();
    myGrid.Background = new VisualBrush(dv);
    this.Content = myGrid;
}
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