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AlphaGradientPanel, an extended panel

, 24 Mar 2006 CPOL
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A panel that has rounded borders, gradients, and transparency.


This is a panel, first of all. Therefore, it has all the advantages of a panel, plus some nice little features.

Using the code

You'll just have to include the component in your toolbox and use it.

The only property that is a bit special is the Colors() property. It is a collection of items and has design-time visibility in the property grid. I'm still trying to achieve transforming the color name that appears in the property grid in a nice drawing... If anybody knows how that can be achieved, please, please, please, let me know Wink | ;)


  • Rounded corners (any one of them or all at the same time).
  • Gradients (from 2 to n colors, with some special effects).
  • Transparency (any color can be made transparent with an "Alpha" value between 0 and 255).
  • Borders, even with rounded corners, have a nice little border.
  • Image inclusion (position, opacity, size, grayscale, and padding).
  • Padding of the content, of the back, and of the docking.


  • Version 1.0.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Nicolas Wälti
Software Developer (Senior)
Switzerland Switzerland
No Biography provided

Comments and Discussions

Questionimage alpha question Pinmemberbekiser1-May-13 8:23 
SuggestionA few changes needed to get this to work in .Net 4 [modified] PinmemberJonathan_Collins6-Jun-12 23:55 
GeneralMy vote of 2 PinmemberBrad Barnhill6-Jan-12 17:49 
GeneralMy vote of 2 PinmvpDave Kreskowiak8-Apr-10 7:37 
QuestionIssue removing control from form(s) PinmemberDavid Minder22-Dec-09 6:09 
QuestionOver controls??? PinmemberMember 247284813-Oct-09 10:53 
Generalfrustrating Pinmemberjoe destefano8-May-09 12:45 
GeneralRe: frustrating Pinmemberjoe destefano8-May-09 12:59 
GeneralRe: frustrating PinmemberDavid Minder22-Dec-09 5:16 
QuestionAdding an AlphaGradientPanel at runtime? PinmemberSMothes29-Sep-08 5:38 
AnswerRe: Adding an AlphaGradientPanel at runtime? PinmemberNick Waelti1-Oct-08 2:10 
Questiontransparency over controls PinmemberFallakka14-Aug-08 0:06 
GeneralTransparency problem Pinmemberzuraw13-Mar-08 5:06 
GeneralRe: Transparency problem Pinmembercdebel26-Feb-09 10:49 
QuestionException PinmemberBBWicked1-Aug-07 0:46 
Generalsorry but :) Pinmemberdeltadirac29-Jul-07 9:05 
QuestionRemoving a color Pinmemberthe-rpd1-Jul-07 6:20 
I'm using the code in a other project to modify it and get a nice button but i'm having a problem.

How can i delete a color?

I'm trying to delete it in design mode but it won't disapear from the color list and I'm getting an error.
When I delete it in de disigner generated code it's gone but I don't think thats the way it should be done?
When I re add the color in the designer I get the same error (something about component not being serializable).
Did I forget to copy something?

Also when I re add it in the designer code, I can set the color but the colorproperty above it gets the same color.

When I do this in your default project it all works fine.
GeneralNice control Pinmemberthe-rpd26-Jun-07 10:38 
GeneralRe: Nice control Pinmember(Nick Waelti)28-Jun-07 1:11 
GeneralRe: Nice control Pinmemberthe-rpd28-Jun-07 7:40 
GeneralUse in applications PinmemberBryanTKinkel12-Jun-07 4:40 
AnswerRe: Use in applications PinmemberNick Waelti12-Jun-07 4:55 
GeneralRe: Use in applications PinmemberBryanTKinkel13-Jun-07 5:29 
GeneralRe: Use Commercial in applications PinmemberMatt Lowrance26-Sep-07 7:39 
GeneralRe: Use Commercial in applications PinmemberNick Waelti26-Sep-07 21:19 

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