IsValidControlHandle2

PATHMac OS 8 and 9 Developer Documentation > Human Interface Toolbox > Control Manager >

Programming With the Mac OS 8.5 Control Manager

IsValidControlHandle

Reports whether a given handle is a control handle.



 
pascal Boolean IsValidControlHandle (

                     ControlHandle theControl);

theControl: A value of type ControlHandle . Pass the handle to be examined.
function result: A value of type Boolean . The IsValidControlHandle function returns true if the specified handle is a valid control handle; otherwise, false .

DISCUSSION

The IsValidControlHandle function confirms whether a given handle is a valid control handle, but it does not check the validity of the data contained in the control itself.

VERSION NOTES

Available with Mac OS 8.5 and later.