Solved

.Net Transparent Form Back Ground

Posted on 2010-09-21
14
336 Views
Last Modified: 2012-05-10
I want a form background as this :

http://www.launchy.net/images/screenshot_sheep.jpg

how should i do it
0
Comment
Question by:3XLcom
  • 7
  • 5
  • 2
14 Comments
 
LVL 19

Expert Comment

by:Shahan Ayyub
ID: 33727127
Hi!

One way as I see is that you can use two forms form1, form2.

form1 has opacity is less, like 20% etc and
form2 has opacity 100%

form1 has ShowInTaskbar property =false.
0
 

Author Comment

by:3XLcom
ID: 33729133
ok what about corner on the forms
0
 
LVL 19

Expert Comment

by:Shahan Ayyub
ID: 33733321
You can use Form_Paint event to redraw the form by making Polygon(Graphics.DrawPolygon). This will help to reshape the form.
0
DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

 
LVL 8

Expert Comment

by:mac-will
ID: 33737033
The partial class below give the form in this screenshot.

You would need to add quite a bit of mouse/focus handling code...

MAC
   public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        internal static GraphicsPath CreateRoundedRectanglePath(Rectangle rect, int cornerRadius)
        {

            GraphicsPath roundedRect = new GraphicsPath();
            roundedRect.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90);
            roundedRect.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y);
            roundedRect.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90);
            roundedRect.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2);

            roundedRect.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y + rect.Height - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 0, 90);

            roundedRect.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
            roundedRect.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90);
            roundedRect.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2);
            roundedRect.CloseFigure();
            return roundedRect;

        }


        protected override void OnPaint(PaintEventArgs e)
        {
            Rectangle lRect = new Rectangle(new Point(0,0), this.Bounds.Size);
            lRect.Inflate(-1, -1);

            using (GraphicsPath path = CreateRoundedRectanglePath(lRect, 12))
            {
                e.Graphics.DrawPath(Pens.White, path);

                e.Graphics.FillPath(new LinearGradientBrush(lRect,
                    Color.FromArgb(100, Color.White), 
                    Color.FromArgb(100, Color.WhiteSmoke),  
                    LinearGradientMode.Vertical), path);
            }

            lRect.Inflate(-18, -18);
            using (GraphicsPath path = CreateRoundedRectanglePath(lRect, 12))
            {
                e.Graphics.DrawPath(Pens.White, path);

                e.Graphics.FillPath(new LinearGradientBrush(lRect,
                    Color.DarkGray,
                    Color.Black,
                    LinearGradientMode.Vertical), path);
            }

            e.Graphics.DrawString("Hello test 1,2,3...", this.Font, Brushes.WhiteSmoke, new PointF(50, 50));
        }
        protected override void OnActivated(EventArgs e)
        {
            base.OnActivated(e);
            this.Invalidate();
        }

        /// <summary>
        /// Gets the creation parameters.
        /// </summary>
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                cp.ExStyle |= 0x20;
                return cp;
            }
        }

        /// <summary>
        /// Paints the background.
        /// </summary>
        /// <param name="e">E.</param>
        protected override void OnPaintBackground(PaintEventArgs e)
        {
            // do nothing
        }

        protected void InvalidateEx()
        {

            if (Parent == null)
                return;

            Rectangle rc = new Rectangle(this.Location, this.Size);

            Parent.Invalidate(rc, true);
        }
    }

Open in new window

Untitled.jpg
0
 

Author Comment

by:3XLcom
ID: 33740663
CreateRoundedRectanglePath()

how should i use this function i don't understand i am sorry
0
 
LVL 8

Expert Comment

by:mac-will
ID: 33743507
See how I used it in the example OnPaint method above.
0
 

Author Comment

by:3XLcom
ID: 33745177
i checked it already, i could not find what to write to :
Rectangle rect, int cornerRadius
0
 
LVL 8

Expert Comment

by:mac-will
ID: 33745966
I'm not sure what you mean.  What do you mean when you say "could not find what to write"?

Basically I provided a complete class that produces the look of a form much like your example.

The function CreateRoundedRectanglePath() takes as parameters a rectangle and a corner radius and returns a graphics path of a rounded rectangle.


Do you understand what is going on here?  We are custom painting the form.
0
 

Author Comment

by:3XLcom
ID: 33746176
yes i understand but i do not understand how to call CreateRoundedRectanglePath() this function for ex.


CreateRoundedRectanglePath(?????, 12);

sth like this but what will i put the ????? part
0
 
LVL 8

Accepted Solution

by:
mac-will earned 500 total points
ID: 33747322
This parameters takes a Rectangle Object.

For example a Form has a Bounds Rectangle.

try making a new rectangle

Rectangle myRect =  new Rectangle(0, 0, 100, 300);
0
 

Author Closing Comment

by:3XLcom
ID: 33747444
Thanks Perfect Job
0
 

Author Comment

by:3XLcom
ID: 33747605
I want to add one thing if sth. come behind to the form then go out the shadow getting worst why ?
Untitled.png
0
 
LVL 8

Expert Comment

by:mac-will
ID: 33754590
because it isn't repainting the desktop properly so it is repainting over itself...
0
 

Author Comment

by:3XLcom
ID: 33755677
do you have any advice for solution?
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question