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Manual set height of button
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Author
Topic: Manual set height of button (Read 1445 times)
las
New Member
Posts: 26
Manual set height of button
«
on:
September 17, 2019, 10:46:48 pm »
Hi!
I put two buttons on the form jButton1, jButton2.
The text in jButton1 takes 2 lines
The text in jButton2 takes 1 lines
Coded:
jButton1.LayoutParamHeight := lpWrapContent;
jButton2.LayoutParamHeight := lpExact;
jButton2.height:=jButton1.height;
JButton2.UpdateLayout;
But height of jButton2 not equal height of jButton1 on screen.
Why? What wrong?
Logged
zorfox
Newbie
Posts: 5
Re: Manual set height of button
«
Reply #1 on:
September 17, 2019, 11:52:08 pm »
This works but may cause issues across devices...
jButton1.LayoutParamHeight:=lpExact;
jButton1.Height := 300;
jButton2.LayoutParamHeight:=lpExact;
jButton2.Height := 300;
Logged
las
New Member
Posts: 26
Re: Manual set height of button
«
Reply #2 on:
September 18, 2019, 12:01:07 am »
The problem is in different devices. It is necessary that the size of the large button is determined automatically.
Logged
zorfox
Newbie
Posts: 5
Re: Manual set height of button
«
Reply #3 on:
September 18, 2019, 06:56:18 pm »
There is no [left , top, width, height] exposed at run time. As far as I know, height properties will need to be derived from the parent. Unfortunately, jButton2.Parent := jButton1 won't work. You'll need to use some sort of container such as a jPanel.
Code: Pascal
[Select]
[+]
[-]
jButton1
.
Parent
:
=
jPanel1
;
jButton1
.
LayoutParamHeight
:
=
lpMatchParent
;
jButton1
.
PosRelativeToParent
:
=
[
rpTop
,
rpLeft
]
;
jButton1
.
Text
:
=
'This is'
+
#10
+
'two lines'
;
jButton1
.
Parent
:
=
jPanel1
;
jButton2
.
Anchor
:
=
jButton1
;
jButton2
.
PosRelativeToAnchor
:
=
[
raToRightOf
,
raAlignTop
]
;
jButton2
.
LayoutParamHeight
:
=
lpMatchParent
;
jButton2
.
Text
:
=
'This is one'
;
Here is a good explanation about auto-sizing and layout on the lazarus Wiki page. Maybe you can come up with a better solution after digesting that.
https://wiki.freepascal.org/Autosize_/_Layout
Logged
las
New Member
Posts: 26
Re: Manual set height of button
«
Reply #4 on:
September 18, 2019, 10:23:04 pm »
In your example, the height of the buttons is generally not clear what, because the height of the jPanel is not tied to the height of jButton1, which is automatically calculated.
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