In Gambas, how do I define a button to be themed as 'destructive-action' or 'suggested-action'? They should be of different color.

In Gambas, how do I define a button to be themed as 'destructive-action' or 'suggested-action'? They should be of different color.

The best way is to make your own bespoke button. Run this code in a new Graphical Application.

I appreaciate the humour

JumpyVB said

In Gambas, how do I define a button to be themed as 'destructive-action' or 'suggested-action'? They should be of different color.

Forgive me, but :? I do not quite understand what you want to achieve.

Here's a screenshot illustrating the use of suggested-action style class. On the screenshot I am closing an unsaved document in the xed text editor and the program highlights the "Save As…" button. Gtk Inspector reveals that the button has a suggested-action css style class associated to it. The color in this case is defined in /usr/share/themes/Mint-Yz-Base-Purple/gtk-3.0/gtk.css

(Click to enlarge)

I wan't a specific button on my gambas app to be styled like this. I don't want to hardcode the background. I want the appearance to follow which ever theme the user has specified on their gnu/linux.

PS: I'm using Linux Mint and SebastJava/mint-yz-theme here.

PSS: Maybe this could be achieved in QT as well as in Gtk. I can change my app to using QT. I know you vuott are using QT if I remember correctly from an earlier post.

 You can set a buttons Cancel or Default Boolean properties.

btnSaveAs.Default = True
btnExit.Cancel = True

BruceSteers said

You can set a buttons Cancel or Default Boolean properties.
btnSaveAs.Default = True
btnExit.Cancel = True

I tried default and cancel but they don't change the appearance - At least on my setup.

I will post a new question about theming QT apps.

 It's down to the theme config.

You have to code it yourself if you want it guaranteed.

BruceSteers said

It's down to the theme config.

How should I theme config for a Gambas app?

There seems to be something odd with naming convention of gtk ui elements in Gambas. Here's a screenshot showcasing my image viewer prototype made in Gambas as a GTK+3 Application. For example Gtk Inspector reveals that the proggressbar is called GtkFixed - Which makes it impossible to be themed? I would have expected it to be called GtkProggressBar and have the name ProgressBar1 shown aswell - As compared to gtk3-widget-factory on the right side on the screenshot. Is it possible that proggressbar is not a native gtk component in Gambas?

(Click to enlarge)

You'd have to ask Benoit about that level of internal detail.

Personally i think it would be easier to just make your own buttons like cogier first suggested.

I'd probably do something like this….

Save this code in my projects .src folder as Form.class


That will make ALL your programs windows buttons (including modal windows like Message.class) show a hint of green if Default or a hint of red if Cancel.

of course you can change the color to your own liking

PS. you need to explicitly use Me.Show in your startup forms Form_Open() method as it does not seem to run Show() itself.

cogier said

The best way is to make your own bespoke button.

Okay, I'll have a go with this. I will need to wrap this in to a custom control to keep the source code of FMain ungluttered. Let's leave out the label for now to make things more simple. So far I have created a "NiceButton.class":


I have this in a new Graphical application with a single VBox on the FMain to populate my buttons (or a single button now for starters): Only hovering the mouse cursor over my nice panel button or clicking it has no effect What am I doing wrong here?

Have a look at ColButton that's on the farm and here.

cogier said

Have a look at ColButton that's on the farm and here.

 Exactly what I needed. Thank you very much.