graphics screen capture makes a black image

Question

graphics screen capture makes a black image

Tanne 41

When I Run this code I get a black png:

class Program
{

    static void Main(string[] args)
    {
        Console.ReadLine();

        using (Bitmap screenshot = new Bitmap(53, 21))
        {
            System.IO.File.Delete("C:\\test.png");

            using (Graphics image = Graphics.FromImage(screenshot))
            {
                image.CopyFromScreen(new Point(81, 160), new Point(134, 181), new Size(53, 21));
            }
            screenshot.Save("C:\\test.png");

            screenshot.Dispose();




        }

    }
}

any ideas why?

Answer 1

Castorix31 71,866

new Point(134, 181) is the destination, so it is out of bounds

replace it by new Point(0, 0)

(and don't use Dispose when you use using...)

Tanne 41 Reputation points

2021-02-18T18:33:06.757+00:00

@Castorix31 that Worked! I'm still confused though I thought it was like a rectangle where the top left corner is the first point (81, 160) then the bottom right was the second point (134 181) could you explain what i'm getting wrong?
Castorix31 71,866 Reputation points

2021-02-18T18:38:25.033+00:00

You can check the doc at : CopyFromScreen(Point, Point, Size)
with :

upperLeftDestination Point
The point at the upper-left corner of the destination rectangle.

graphics screen capture makes a black image

0 additional answers

Activity