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WIDGETS GAMBAS
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_gb3.pngBUTTON - Simplify code
Use ACTION and GROUP to simplify code

Hi
Today for this tutorial, we will create one simple application with 5 buttons.
When i click on one button, other buttons are disabled. One Reset button return all buttons enabled.

A) create interface.

Let create 4 buttons like this :



  and one button named Button5 with property Text is : Reset who will enable all 4 buttons.

B) Let write code

Naturaly, we will write this code bellow :

Public Sub Button1_Click()
Button1.Enabled = True
Button2.Enabled = False
Button3.Enabled = False
Button4.Enabled = False
End

Public Sub Button2_Click()
Button1.Enabled = False
Button2.Enabled = True
Button3.Enabled = False
Button4.Enabled = False
End

Public Sub Button3_Click()
Button1.Enabled = False
Button2.Enabled = False
Button3.Enabled = True
Button4.Enabled = False
End

Public Sub Button4_Click()
Button1.Enabled = False
Button2.Enabled = False
Button3.Enabled = False
Button4.Enabled = True
End

Public Sub Button5_Click()
Button1.Enabled = True
Button2.Enabled = True
Button3.Enabled = True
Button4.Enabled = True
End

C) Simplify code using Group property

We could simplify code using group property.
Group property are used to do group of widget, All event will be grouped in a same group.
  In GROUP property of every button write this text : toto . All these button with be in  toto group.

  Now in Tag property of every button, write text 0,1,2,3 (button1.tag = 0 button2.tag = 1 etc...)
Result is interesting, we will have only one event click like this :

PUBLIC SUB toto_Click()
SELECT CASE LAST.tag
CASE 0
bouton0.Enabled = FALSE
bouton1.Enabled = TRUE
bouton2.Enabled = TRUE
bouton3.Enabled = TRUE
CASE 1
bouton0.Enabled = TRUE
bouton1.Enabled = FALSE
bouton2.Enabled = TRUE
bouton3.Enabled = TRUE
CASE 2
bouton0.Enabled = TRUE
bouton1.Enabled = TRUE
bouton2.Enabled = FALSE
bouton3.Enabled = TRUE
CASE 3
bouton0.Enabled = TRUE
bouton1.Enabled = TRUE
bouton2.Enabled = TRUE
bouton3.Enabled = FALSE
END SELECT
END

D) simplify code with 3 lines

We could simplify more this code.
We use only enabled property of every button. We could use ACTION property of every button.
Write for every action property of every button this text : bouton.
With group and action properties, we will write this simple code :

PUBLIC SUB toto_Click()
Action["bouton", ME].Enabled = TRUE
LAST.Enabled = FALSE
END

  Let explain this code :
public Sub toto_click When i click on widget in toto group
Action["bouton", ME].Enabled = TRUE property enabled will be true on this widget with action named bouton
LAST.Enabled = FALSE and last widget clicked will be disabled.

In conclusion, we simplify all this code with only 3 lines.
It's this gambas power.
Thanks for your attention.

Creation date : 08/04/2022 @ 11:31
Last update : 08/04/2022 @ 20:51
Category : BUTTON
Page read 1513 times

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