Inside Macintosh: QuickDraw GX Environment and Utilities /

Chapter 1 - QuickDraw GX and the Macintosh Environment / QuickDraw GX and the Macintosh Environment Reference

Macintosh Interface Functions / Associating View Ports With Macintosh Windows

GXGetWindowViewPort

You can use the GXGetWindowViewPort function to return the view port of a specified Macintosh window.

gxViewPort GXGetWindowViewPort(WindowPtr qdWindow);

qdWindow

A pointer to the specified window.

function result

A reference to the view port associated with the specified window.

DESCRIPTION

The function returns nil if the window has no associated view port.

ERRORS, WARNINGS, AND NOTICES

Errors

out_of_memory

SEE ALSO

To create a view port associated with a window, use the GXNewWindowViewPort function, described on page 1-24. To obtain the window associated with a view port, use the GXGetViewPortWindow function, described in the previous section.