Windows Print Screen Steps to (Only Capture Selected Windows Screenshot)

1. Locate and maximize the window you'd like to capture.
2. To copy/capture the current window, hold down ALT + Print Scrn at the same time.
Nothing visual will indicate that you have successfully captured a screenshot until step 4 below.
3. Open a new document in your email program,
4. Paste by holding down CTRL and V at the same time.
If your image did not appear in your email, as some emails  will support this others won't:
5. Open MS Word, MS Photo Editor, or Adobe PhotoShop or Paint.
Paste by holding down CTRL and V at the same time.

6.Save the file as a jpeg or gif and attach it to your  email as you would any other file.
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in Mac OS X. There are few ways to do screen capture
Follow the steps below and you will be able to do a screen capture in Mac OS X.

• Switch to the screen that you want to to do screen capture

• Hold down Apple key ⌘ + Shift + 3 and release all

• then use your mouse to click on the screen
• Done. You will see a picture file in at your desktop. That’s the screen capture picture.

You can also do a screen capture for a portion of your screen.

• Switch to the screen that you wan to to do screen capture

• Hold down Apple key ⌘ + Shift + 4 and release all key

• Now, You will see the mouse cursor will change to +
• You can start to drag your mouse to select the portion you wish to capture.
• Once finish, you will see a picture file in at your desktop. That’s the screen capture picture!

If you want to do a screen capture for a particular application window, you can follow this:-

• Switch to the screen that you wan to to do screen capture

• Hold down Apple key ⌘ + Shift + 4 and release all key

• Now, You will see the mouse cursor will change to +
• Press the space bar once
• You will see the mouse cursor change to a camera
• Now you can use the camera to select which application window to screen capture
• Once finish, you will see a picture file in at your desktop. That’s the screen capture picture!
• attach it to your email and send it