5 replies to this topic

[Alfie Stoppani]

Hi,

I would like to write a program using buttons. So, for example, when the program is first launched, a screen appears with a number of options. Let's say if F1' /> the program is told to Goto 1, and the code under Lbl 1 would come on screen, and if the program was executed again and F2' /> was pressed, then Goto 2 would be shown for example.

I assume this uses loops but I'm quite new to programming and don't know how to use loops to make buttons.

Hope you can help. Thanks.

Alf <:3D~

[flyingfisch]

Ok.

Here is a simple way to do it:

While not Getkey  //loop while no button is pressed
Getkey -> G
WhileEnd

G=79 => Goto 1  //If F1 is pressed, goto 1  (79 is the code for F1)
G=29 => Goto 2

Lbl 1
Stuff to do if f1 is pressed

Lbl 2

stuff to do if f2 is pressed

Hope that helps

[Alfie Stoppani]

I can't get your code to work, it just shows the things in labels 1 & 2 simultaneously, and seems to bypass the getkey looping bit.

I tried this code: [codebox]Goto 3
Lbl 1
"I Just Pressed F1"
Goto 0
Lbl 2
"I Just Pressed F2"
Goto 0
Lbl 3
While Not Getkey
Getkey -> G
WhileEnd

If G=79
Then Goto 1
If End

If G=69
Then Goto 2
If End

Lbl 0[/codebox]

And it doesn't work, just says 'Done'. What am I doing wrong with this modification to the previous code?

Alf.

[flyingfisch]

Oh wait, try this:

While Getkey=0 or Getkey =21  //loop while no button is pressed
Getkey -> G
WhileEnd

G=79 => Goto 1  //If F1 is pressed, goto 1  (79 is the code for F1)
G=29 => Goto 2

Lbl 1
Stuff to do if f1 is pressed

Lbl 2

stuff to do if f2 is pressed

[somebody1234]

Maybe you can use Do LpWhile to loop unless f1 or f2 is pressed:

Do
Getkey->G
LpWhile G≠79 And G≠29
G=79 => Goto 1
G=29 => Goto 2
Lbl 1
Stuff to do if f1 is pressed
Lbl 2
stuff to do if f2 is pressed

[flyingfisch]

That works.

Also, Lbl's and goto's are not the best coding practices. Maybe this code would be faster (slightly)?

Do
Getkey->G
LpWhile G≠79 And G≠29
If G=79
Then 
'Stuff to do if f1 is pressed

If G=29
Then
'stuff to do if f2 is pressed