How to capture the balance of CCB?

With QQ screenshot function, you log in to QQ, and then press and hold Ctrl+Alt+A on the keyboard at the same time, the screen and mouse will change color, and then press and hold the left mouse button for a while, a box will appear, and the box will be as big as the place where you want to take a screenshot. Then select the function below the screenshot, and the third function on the right is the save function, and then save the screenshot to the computer.