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Height of text

Posted on 2002-06-27
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Last Modified: 2006-11-17
Since microsoft desided to remove the autosize property for the labels in vb.net (its still there but only on a horizontal sence of the word), I am trying to determin the required height of a text (with the current font, fontsize etc). I have tried everything (.PreferredHeight and so on) but have faild ,looking for ideas. What I am trying to do is to create a label that will autosize vertical (down) when a text is added to it that cannot fit into its widht (wordwrap).

PLZ PLZ PLZ ideas anything that might pop into your heads, give it to me... I will post the solution if I solve it my self.

Sincerly
Claes
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Question by:clylv
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8 Comments
 
LVL 22

Expert Comment

by:CJ_S
ID: 7113052
So you want the text to always be on one line?

CJ
0
 
LVL 22

Expert Comment

by:CJ_S
ID: 7113084
Anyway, no matter how you can retrieve the height of the font by using code similar to the following:

System.Drawing.Font x = new Font("Verdana", 3);
x.GetHeight()

You can use these functions to determine how big your font needs to be.

CJ
0
 

Author Comment

by:clylv
ID: 7113154
Thanx CJ S,
That goes a way but what I need to know is how many lines in a multiline label I need to make room for.

EX

Label1.wordwrap = true
Label1.width = 50
label1.Text = "lllllllllllllllllllllllllllllllllllllllllll"

Now the text will require more space thatn the 50 pixels that has been assigned to it.
The text will be displayd something like this:
lllllllllll and the rest will be hidden.
What I want to be able to do is to calculate the number of needed rows so that I can adjust the height of the label to accomodate the whole text like this:
lllllllllll
lllllllllll
lllllllllll
lllllllllll
lllllll
The autosize property will not let me do this, so I tried this formula

Dim Label2 as Label
Label2.AutoSize = true
Label2.Text = Label1.Text
dim rows as integer
rows = label1.width / label2.width
dim iHeight as integer
iHeight = rows * font.GetHeight
Label1.Height  = iHeight

And it works sortof,

The problem is that like most wordprocessors the Label changes the spacings in a text when wordwrap adds a new line. And then sometimes you end up with a few char or a word below the Label.... irritating lik hel.... and I can't find a way around it.

/claes
0
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LVL 22

Accepted Solution

by:
CJ_S earned 150 total points
ID: 7113182
Just add the linespacing

iHeight = rows * (Font.GetHeight + Font.FontFamily.GetLineSpacing(FontStyle.Regular))
0
 

Author Comment

by:clylv
ID: 7113207
AHHHHHHHHHH!! CJ S YOU HAVE NO IDEA HOW HAPPY YOU JUST MADE ME!!!

Been trying to solve this for 3 (three!) weeks know and you just naild it for me my friend! works like a charm, a grade A and all the points are yours!

Once again THANKYOU!!!

/Claes
0
 
LVL 22

Expert Comment

by:CJ_S
ID: 7113214
Glad to help ;-)

CJ
0
 

Author Comment

by:clylv
ID: 7113557
mayby I was a bit premature there, or mayby im just stupid, it looked as if it worked like a charm and mayby it will but the linespaceing returns a value of 2355, is this in some strange unit do you know?
It looked like it worked fine but in reality the label is 10 as high as the form?

/Claes
0
 

Author Comment

by:clylv
ID: 7113572
mayby I was a bit premature there, or mayby im just stupid, it looked as if it worked like a charm and mayby it will but the linespaceing returns a value of 2355, is this in some strange unit do you know?
It looked like it worked fine but in reality the label is 10 as high as the form?

/Claes
0

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