Properly capturing the contents of a scrolling window is not trivial. It may take some experimentation on your part to get a perfect capture.
Most of the time people use scrolling window contents capture to grab a web page which is too big to render in a window. In this case, you might also consider using a dedicated browser plugin for this task made by other companies. Such plugins may be found for Internet Explorer and FireFox.
To capture a scrolling window, first Select the Windows Object capture mode:
You should then see the Red Box Capture outline appear on the screen, and follow your cursor around as you hover over windows.
Move to the background of the window you wish to capture:
IMPORTANT:
If you are trying to capture a web page, make sure that before you engage a capture, click your mouse somewhere on the background of the page - and not in an input field. This is very important because for some scrolling window captures the program needs to send key presses to scroll the window, and if an input field is the focus of the web page the page won't be scrolled.
To being the scrolling capture, hold the Ctrl+Shift Key while clicking the mouse, or hold the shift key and press the Right Ctrl Key. Sometimes pressing the mouse can mess up the program so the Right Ctrl Key alternative can come in handy.
If all goes well, you should see the window flicker and scroll for a bit while ScreenShot Captor attempts to figure out the size of the contents and then do the actual capture. It will capture both horizontal and vertically scrolling windows.
Capturing and stiching together the contents of a scrolling is complicated, and occassionally Screenshot Captor can get fooled into capturing the scrollbars or otherwise make mistakes about the proper boundries of the scrolling capture. To handle such cases there is an advanced feature called Scrolling Window Capture exceptions which is covered in the next section.
TRICK: You can use the right ctrl key instead of mouse click.