Inside Macintosh: Mac OS 8 Toolbox Reference /

Chapter 2 - Control Manager Reference / Control Manager Functions

Accessing and Changing Control Settings and Data /

IsControlVisible

NEW WITH THE APPEARANCE MANAGER

Indicates whether a control is visible.

pascal Boolean IsControlVisible (ControlHandle inControl);

inControl

On input, a handle to the control whose visibility you wish to determine.

function result

Returns a Boolean value. If true, the control is visible. If false, the control is hidden.

DISCUSSION

If you wish to determine whether a control is visible, call IsControlVisible instead of testing the contrlVis field of the control structure.

SEE ALSO

"Appearance Manager Gestalt Selector Constants".