User Guide

321

invertMask

Syntax

member(whichQuickTimeMember).invertMask

the invertMask of member whichQuickTimeMember

Description

QuickTime cast member property; determines whether Director draws QuickTime movies in the

white pixels of the movie’s mask (TRUE) or in the black pixels (FALSE, default).

This property can be tested and set.

Example

This handler reverses the current setting of the invertMask property of a QuickTime movie

named Starburst:

on toggleMask

member("Starburst").invertMask = not member("Starburst").invertMask

end

See also

mask

isBusy()

Syntax

sound(channelNum).isBusy()

Description

Function; returns TRUE if sound channel channelNum is currently playing or pausing a sound, and

FALSE if it hasn’t started playing any of its queued sounds or has been stopped.

To see an example of

isBusy() used in a completed movie, see the Sound Control movie in the

Learning/Lingo Examples folder inside the Director application folder.

Example

The following Lingo statement checks whether a sound is playing in sound channel 1. If there is,

the text of member field is set to “You should hear music now.” Otherwise, the text reads “The

music has ended.”

if sound(1).isBusy() then

member("field").text = "You should hear music now."

else

member("field").text = "The music has ended."

end if