Return
codes.
On completion, the handling routine must return a BOOLEAN value to indicate
success or an error.
TRUE
FALSE
Possible
Errors Detected: When an error is detected, the handling routine must
call WinSetErrorInfo to post the condition. An error code for conditions
that the handling routine is expected to check is:
Refer to the "Error
Explanations" section in the Presentation Manager Programming Reference
for further explanation.