[G4P] Check state of options or checkboxes

hansbaer

[G4P] Check state of options or checkboxes

in Contributed Library Questions • 4 months ago

First of all:

Thanks for that awesome library and the builder tool. Really helped me to grab a foothold in the whole processing business. :)

The only thing i can't get working are the checkboxes and option groups.

To explain what my problem is, i made a simple example program with the GUI builder:

Main Tab:

// Need G4P library
import g4p_controls.*;
int bgcolor=100;
public void setup(){
size(480, 320, JAVA2D);
createGUI();
customGUI();
// Place your setup code here
}
public void draw(){
background(bgcolour);
}
// Use this method to add additional statements
// to customise the GUI controls
public void customGUI(){
}

gui Tab:

public void checkbox1_select(GCheckbox source, GEvent event) { //_CODE_:checkbox1:537084:
println("checkbox1 - GCheckbox event occured " + System.currentTimeMillis()%10000000 );
if (checkbox1 == true) {
bgcolor=1;
}
else bgcolor = 230;
} //_CODE_:checkbox1:537084:
// Create all the GUI controls.
// autogenerated do not edit
public void createGUI(){
G4P.messagesEnabled(false);
G4P.setGlobalColorScheme(GCScheme.BLUE_SCHEME);
G4P.setCursor(ARROW);
if(frame != null)
frame.setTitle("Sketch Window");
checkbox1 = new GCheckbox(this, 176, 147, 120, 20);
checkbox1.setTextAlign(GAlign.LEFT, GAlign.MIDDLE);
checkbox1.setText("checkbox text");
checkbox1.setOpaque(false);
checkbox1.addEventHandler(this, "checkbox1_select");
}
// Variable declarations
// autogenerated do not edit
GCheckbox checkbox1;

Well, it didn't work. I just want to read the state of the checkbox (or option). I got the Textfield working with getText() and setText(), getValue() didn't work either.

Any advice here?

Thanks in advance!

Replies(3)

quarks

Re: [G4P] Check state of options or checkboxes

4 months ago

In the second listing change the code to

if (checkbox1.isSelected() == true) {
bgcolor=1;
}
else {
bgcolor = 230;
}

hansbaer

Re: [G4P] Check state of options or checkboxes

4 months ago

Thank you!

Do option buttons work with option.isSelected() , too?

Btw, is there any reference where i could look for those commands myself?

quarks

Re: [G4P] Check state of options or checkboxes

4 months ago

Do option buttons work with option.isSelected() , too?

Yes.

Btw, is there any reference where i could look for those commands myself?

There are two sets of reference you can view. They are both auto-generated from comments in the libraries source code but use different software to generate them so they show the same information in different formats.

SET ONE
This set comes with the library download so if you locate the folder
..\Documents\Processing\libraries\G4P\reference
then double click on the index.html file.

SET TWO
This set can be found on my website.

To find out about GCheckbox controls clicl on the link for this class and it will list the methods available for that control. The core of the G4P library is an inhertiance hierachy so the checkbox control has all the methods in the GCheckbox class as well as all the methods in the classes it inherits from.

The image on the right shows the inheritance hierarchy for the GCheckbox class so when checking for methods you should also look at the classes above i.e.
GToggleControl
GTextIconAlignBase
GTextAlign
GTextBox
GAbstractControl

BTW the image was taken from my website - click on the image to see the full webpage for this control.

Also don't ignore the G4P class - this has a number of powerful methods that can be applied to all controls e.g.
G4P.setAlpha(129); // make all controls semi-transparent

Look at the examples that come with the library - these demonstrate all the various controls and most of the things you can do with them.

The reference takes some time to get used to but is well worth the effort.

HTH

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