1, take the WINDOWS7 system as an example, click the lower left corner Start button, select All Programs, in the attachment, find the screenshot tool, open it.
2, enable the Screenshot tool, click the New Right Drop-down arrow, select any format screenshot.
3, intercept the picture you want to keep the position, with the Red Line circle.
4, the interception completes, the picture will automatically display in the screenshot tool, if needs to carry on other processing to the picture, click the brush to be possible to add.
5, CTRL + C copy, Ctrl + V paste into the slide page, select the picture, resize position, in the Format tab click the Color button, set the transparent color.
6. Set the background area of the picture to be transparent, if you think the picture style is not very beautiful, you can change the picture style.