Transparent PictureBox on BackgroundImage of Form, not BackColor of Form

[Alex Gray]

Hi,
I'm trying to make my PictureBox transparent to the BackgroundImage of
the Form, not the BackColor of the form.

Here's what i have:
---------------------------------------------------
this.BackColor = Color.Wheat;

this.gameBackgr oundBMP = new
Bitmap(GetType( ),"MyForm.backG round.bmp");
this.Background Image = (System.Drawing .Image)gameBack groundBMP;

this.foo = new Bitmap(GetType( ),"MyForm.comba tant.bmp");
System.Drawing. Color backColor = foo.GetPixel(1, 1);
this.foo.MakeTr ansparent(backC olor);

this.combatant = new System.Windows. Forms.PictureBo x();
this.combatant. Image = (System.Drawing .Image)foo;

---------------------------------------------------

The problem is that the combatant.bmp *is* transparent, but i see
Color.Wheat, not the this.Background Image.

Am I doing something fundamentally wrong here?
thanks in advance,
-alex-

[Bob Powell [MVP]]

PictureBox will not do true transparency because it clears it's background
using the idiot transparency scheme of Windows Forms. You can create a
control that displays an image very easily. There is an article in the GDI+
FAQ about truly transparent controls that will help you to understand how.

--
Bob Powell [MVP]
C#, System.Drawing

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm

Read my Blog at http://bobpowelldotnet.blogspot.com

"Alex Gray" <gr*****@netsca pe.net> wrote in message
news:50******** *************** ***@posting.goo gle.com...

Hi,
I'm trying to make my PictureBox transparent to the BackgroundImage of
the Form, not the BackColor of the form.

Here's what i have:
---------------------------------------------------
this.BackColor = Color.Wheat;

this.gameBackgr oundBMP = new
Bitmap(GetType( ),"MyForm.backG round.bmp");
this.Background Image = (System.Drawing .Image)gameBack groundBMP;

this.foo = new Bitmap(GetType( ),"MyForm.comba tant.bmp");
System.Drawing. Color backColor = foo.GetPixel(1, 1);
this.foo.MakeTr ansparent(backC olor);

this.combatant = new System.Windows. Forms.PictureBo x();
this.combatant. Image = (System.Drawing .Image)foo;

---------------------------------------------------

The problem is that the combatant.bmp *is* transparent, but i see
Color.Wheat, not the this.Background Image.

Am I doing something fundamentally wrong here?
thanks in advance,
-alex-

[Alex Gray]

Thank you, Bob! That link you gave me in your reply is excellent.
You saved me quite a lot of time :)
-alex-

"Bob Powell [MVP]" <bob@_spamkille r_bobpowell.net > wrote in message news:<OA******* ******@TK2MSFTN GP12.phx.gbl>.. .

PictureBox will not do true transparency because it clears it's background
using the idiot transparency scheme of Windows Forms. You can create a
control that displays an image very easily. There is an article in the GDI+
FAQ about truly transparent controls that will help you to understand how.

--
Bob Powell [MVP]
C#, System.Drawing

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm

Read my Blog at http://bobpowelldotnet.blogspot.com

"Alex Gray" <gr*****@netsca pe.net> wrote in message
news:50******** *************** ***@posting.goo gle.com...

Hi,
I'm trying to make my PictureBox transparent to the BackgroundImage of
the Form, not the BackColor of the form.

Here's what i have:
---------------------------------------------------
this.BackColor = Color.Wheat;

this.gameBackgr oundBMP = new
Bitmap(GetType( ),"MyForm.backG round.bmp");
this.Background Image = (System.Drawing .Image)gameBack groundBMP;

this.foo = new Bitmap(GetType( ),"MyForm.comba tant.bmp");
System.Drawing. Color backColor = foo.GetPixel(1, 1);
this.foo.MakeTr ansparent(backC olor);

this.combatant = new System.Windows. Forms.PictureBo x();
this.combatant. Image = (System.Drawing .Image)foo;

---------------------------------------------------

The problem is that the combatant.bmp *is* transparent, but i see
Color.Wheat, not the this.Background Image.

Am I doing something fundamentally wrong here?
thanks in advance,
-alex-