Computer Science Canada Help with button callback procedure |
| Author: | mikiehahn [ Sat Feb 13, 2016 7:01 pm ] |
| Post subject: | Help with button callback procedure |
What is it you are trying to achieve? I am having trouble getting button creation code to run. What is the problem you are having? I have this variable define. I have a procedure defined that has one boolean parameter Then I try to create a button using the procedure as a callback procedure. Here is the code snipet (turing 4.1.1): ... const numInPins : int := 8 % the number of input pins var portInButton : array 0..(numInPins-1) of int procedure buttonInBit0 (value: boolean) portInState(0):= value end buttonInBit0 portInButton(0) := GUI.CreateButton (425, 16, 0, "0", buttonInBit0) .... When I try to run the program, it highlights "buttonInBit0" and the error says: "Argument is the wrong type" I've done cut-n-paste on all the variable names so that I know there is no obvious spelling mistake. What am I doing wrong. Thanks, Michael. |
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| Author: | Insectoid [ Mon Feb 15, 2016 2:12 pm ] |
| Post subject: | RE:Help with button callback procedure |
buttonInbit0 has a parameter, but you do not pass one to it when you call it inside GUI.CreateButton. |
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