Windows 3.1 Device Drivers (ddag31qh.hlp) (Table of Contents; Topic list)
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Screen Captures
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The user can capture the non-Windows application's screen by pressing the
ALT+PRNTSCRN key combination when the application is either full screen or
in a window, or by making a selection and choosing the Copy command when the
application is in a window. WINOLDAP calls the RenderSelection function to
direct the grabber to copy the contents of the current selection to the
clipboard.
 
To do a screen capture, WINOLDAP first calls the display grabber's selection
functions by specifying a selection rectangle that consists of the entire
screen of the non-Windows application. To the grabber, there is no
difference between a screen capture and a normal selection.
 
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