The GHOSTVIEW environment variable (GNU gv Manual)

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7.1.4 The GHOSTVIEW environment variable

parameters

window-id [pixmap-id]

scanf format

"%d %d"

Explanation of parameters:

window-id

tells ghostscript where to

• read the GHOSTVIEW property
• send events

If pixmap-id is not present, ghostscript will draw on this window.

pixmap-id

If present, tells ghostscript that a pixmap will be used as the final destination for drawing. The window will not be touched for drawing purposes.