Photoshop Round Corner selection

Step 1
In Photoshop, create a new 200*200 file, go to the Channels panel, and press the new channel.

Step 2
Select the Circle Selection tool and hold down shift to create a circular selection.

Step 3
Alt + Delete, filled with foreground color.

Step 4
Hold the selection, select the Move tool, press ALT + SHIFT to move the mouse, and copy the selection. Ctrl + D lose the selection.

Step 5
Go to the Channels panel and convert the channel to a selection.

Step 6
Operation with step 4 to copy the selection down.

Step 7
Select the Zoom tool to enlarge the picture properly to facilitate observation.

Step 8
Select the square selection tool to do as shown in Figure selection.

Step 9
Alt + Delete, filled with foreground color.

Step 10
Use the square selection tool again, as shown in the figure selection.
Ctrl + Delete, filled with the foreground color.

Step 11
Double-click on the toolbar so that picture 100% is displayed.

Step 12
Go to the Channels panel, press, convert the channel to a selection, back to the RGB channel.
All right, there's a constituency, let's play it free!
(Pictures from http://seaedge.yeah.net/)