[Gambas-user] User Controls and Font resizing to fit content

[Gianluigi]

2018-05-01 16:19 GMT+02:00 Gianluigi <bagonergi at gmail.com>:

>
>
> 2018-05-01 15:16 GMT+02:00 Tobias Boege <taboege at gmail.com>:
>
>> On Tue, 01 May 2018, KKing wrote:
>> > Sorry to repeat and if any is covered by wiki/doco but I didn't seem to
>> find
>> > any recent info on easily.
>> >
>> > 1. Does Gambas have a concept similar to the VB User Control concept
>> > (i.e. you build a control with the standard label/textbox/buttons save
>> > it and be able to reuse multiple times in another form)?
>> >
>>
>> I put an answer off the first time around, because this question actually
>> needs a whole tutorial to be answered.
>>
>> I don't know VB but Gambas does have a UserControl class for creating
>> custom controls. This is usually a two-step process:
>>
>>   1. Create a form FMyControl and use the form editor to place your
>>      Labels, Buttons and everything else, then write their functionality
>>      into FMyControl's code.
>>
>>   2. Create a class MyControl which inherits UserControl. This class
>>      will create an instance of FMyControl and embed it into itself.
>>      This way, you get the widget FMyControl but don't inherit all the
>>      methods and properties of the Form class. You will have to proxy
>>      the interface parts of FMyControl which you do want to expose
>>      yourself.
>>
>> This technique is used in Gambas a lot. You should look through the
>> source code of gb.form for examples, or ask followup questions.
>>
>> The ListEditor [1] is a very good starting point, because it is small,
>> easy to read and does only the things mentioned above. You will find
>> some UserControls without a corresponding form; these build their
>> appearance by code only, without the help of the form editor.
>> This makes sense for ValueBox, for example, which switches between
>> multiple input controls.
>>
>> A tutorial for this would be nice to have, along with how to use
>> Arrangement, Expand, Spacing and Margin -- something like
>> "Advanced GUI techniques" -- does the Gambas magazine still exist? :-)
>>
>> > 2. Suggestions if convenient way to get the font size to automatically
>> > change to fit provided text in a (can be any of) label/textbox/or other
>> > control?
>> >
>>
>> I don't know. Something like that would be nice for translated projects,
>> where you can't estimate the content size of a Label at development time.
>> [ Not sure if reducing the font size or enlarging the label is the right
>> way
>> to go, but I guess anything but cutting off excessive text can go horribly
>> wrong. ]
>>
>> Regards,
>> Tobi
>>
>> [1] https://gitlab.com/gambas/gambas/tree/master/comp/src/gb.
>> form/.src/ListEditor
>>
>> --
>> "There's an old saying: Don't change anything... ever!" -- Mr. Monk
>>
>>
> You have to forget about VB, Gambas is different, it's better and with a
> few clicks you create windows that do everything you want.
> You have to understand the containers, you have to study the IDE as Tobias
> advised you.
>
> See small attached example, look at the properties of the controls
>
> Regards
> Gianluigi
>
>

That's better

Regards
Gianluigi

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