Draw rectangle on button click in C#
问题 I have form in which background is transparent. I have a button on the form. When I click the button, screenshot of the transparent area is taken and the screenshot is analyzed for a certain reference-image, and if the image is found, a rectangle should be drawn around the reference-image. For now nothing happens when I press the button. I'm using BotSuite Dll, provided here: http://www.botsuite.net/. I My code for the button click is as follows: private void button1_Click(object sender,