Action with Max/Min/Close Buttons on a Sheet/DW

Map this to the userevent: PBM_SYSCOMMAND

IF commandtype = 61488 THEN // Maximize Button
.....
END IF
IF commandtype = 61472 THEN // Minimize button
....
END IF
IF commandtype = 61536 THEN // Close the Window
....
END IF

Пример:
// Disable Max/Min/Close Buttons
IF message.wordparm = 61488 THEN // Maximize Button
message.processed = TRUE
message.returnvalue = 1
END IF
IF message.wordparm = 61472 THEN // Minimize button
message.processed = TRUE
message.returnvalue = 1
END IF
IF message.wordparm = 61536 THEN // Close the Window
message.processed = TRUE
message.returnvalue = 1
END IF