[VB .Net] Label Transparency over Pic

[bangbang023 Veteran]

I am working on my on going project and have come across a problem. I wan tto have a picture box filling the back ground with 2 labels over it. However, when I set the label background color to Web/Transparent, the background still comes out grey when I run the program and this is a problem. How do I make it so that the label is truely transparent and you see the contents of the picture box behind it?

[akaladis Veteran]

Hmmm... i had the exact same problem with .NET... This is why i still use VB6 for most of my work, rather than using VB .NET which causes me a lot of headaches with the new structure... Some changes in .NET are really stupid, and create big incompatabilities... I believe the problem with the label (IF it is a problem) makes my life difficult so when i HAVE to do it, i use VB6... I would also be interested in a solution about this issue... Anyone knows?

/Raptor

[Glowstick]

I had to set all labels to transparent color manually. I did that in the form constructor.

[spike232]

i had to manualy draw text on a few times,

as transparent background means it uses the form colour, so if its on the form it appers transparent, so overlaying it on images does not work.

[no name]

I use Panel to load the picture and it works. I will try to use picture box later after my lunch!

[no name]

Ok now here is now it works!

Conclusion: Use Form1.BackgroundImage or Panel1.BackgroundImage instead of PictureBox1.Image or PictureBox1.BackgroundImage

And when you set Label1.Backcolor to Transparece, the background of Label1 actually goes to the background or back colour of the form. I suggest you to set the image into Form1.BackgroundImage and it will work! (Or you can try use Panel, too)

[smurfiness]

When a label's background colour is set to Transparent, it inherits the background colour of its parent control. IIRC, a PictureBox cannot be the parent of another control, so you'll never be able to get the PictureBox's image to show through. You need to do as no name said and put the background image on a panel or other control that can be a parent.

--

Danny Smurf

[bangbang023 Veteran]

one problem, I need to use the stretch feauture tho for resizing purposes

[no name]

  bangbang023 said:

one problem, I need to use the stretch feauture tho for resizing purposes

Use Panel instead!

[Glowstick]

As said, if you force the transparent color manually on form initialization then it should work. Worked here. Style of (in c#):

SomeElement.BackColor = Color.FromArgb(0, System.Drawing.Color.Transparent);

[bangbang023 Veteran]

thanx tom but that doesn't work in vb ,net apparently :(

[Glowstick]

lol weird. It actually must work, because it's a .NET thing and not a language thing.

Then again, after looking up, I was trying to make a Panel's picture to be shown thru a PictureBox' transparency.

[bangbang023 Veteran]

yeah I set the label transparency on form load and it still doesnt work I still see right through to the form itself and not the picture......darn

[no name]

Well, try this...

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Label1.BackColor = System.Drawing.Color.Transparent
End Sub

And here's the screen shot...

[no name]

You can find more information HERE and HERE

[bangbang023 Veteran]

  no name? said:

Well, try this...

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 ? ? ? ?Label1.BackColor = System.Drawing.Color.Transparent
End Sub

And here's the screen shot...

it doesn't:(ork :( i duno I guess I'll have to forget being able to resize the form.

[no name]

  bangbang023 said:

  no name? said:

Well, try this...

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 ? ? ? ?Label1.BackColor = System.Drawing.Color.Transparent
End Sub

And here's the screen shot...

it doesn't:(ork :( i duno I guess I'll have to forget being able to resize the form.

what do you mean resize?? tell me what exactly you wanna do and i will figure it out for you. i thought you just wanna put some labels on to picture box. btw, that code does work in my .ne:stho :s

[no name]

Maybe try use different size pictures instead of resizing it??? working on it now anyways

[Glowstick]

He means that the picture scales with the size of the PictureBox, a Panel doesn't do that IIRC.

[no name]

I don't think panel would work then. and size property of background image is read only and picturebox cannot be a container in vb .net!

[azcodemonkey]

Why not just override the panel's onpaint and write your own code to size the bitmap? Better yet, since panel doesn't allow double-buffering, create a user control that inherits from panel and use SetStyle to setup double-buffering.

public class UserPanel : System.Windows.Forms.Panel
	{
  /// <summary> 
  /// Required designer variable.
  /// </summary>
  private System.ComponentModel.Container components = null;

  public UserPanel()
  {
 	 // This call is required by the Windows.Forms Form Designer.
 	 InitializeComponent();

 	 // TODO: Add any initialization after the InitializeComponent call
 	 SetStyle(ControlStyles.AllPaintingInWmPaint | 
        ControlStyles.UserPaint |
        ControlStyles.DoubleBuffer, true );
  }

As far as the label not drawing transparent, what is its FlatStyle property set to? I think that some of the settings will not draw transparent( e.g. System ). Set it to Standard and it should draw transparent. If that doesn't work, again, you could override OnPaint and used the DrawString method to write text over the image. It isn't that much work to do so.

The pics have a panel that resizes the image, and a string drawn over it with DrawString. Ugly, I know, but you could probably do something nice with it.

Edited March 20, 2003 by weenur

[no name]

No it won't. It has nothing to do with FlatStyle. It just doesn't work that way. It only goes transparence with mother container!!! and you cannot resize picture either except in picture box which is NOT possible to be a container!

[no name]

tis in vb .net not c#

[azcodemonkey]

Ok. I'll use a label over the panel that can't have a scaling image in it that i wrote... :huh:

ahem...

[azcodemonkey]

So what if it's c# and not vb.net? you can do the same thing. The framework is the same. You can override painting in VB, you can create controls in VB.

I'll try and write this in VB.net just to show you how to do it. Granted, I don't write alot in VB so this may take a while.

[no name]

i dont either. i just started it in Feb. but according to microsoft documents, you cannot resize pic cus tis read only and label only set transparence to the mother container! anyways, i will try it!!