RGB for Control color from System.Colors

[mechwarrior3]

I am trying to create a bitmap image that will be used over a Radio Button. This image, well actually two of them, will simulate a Radio Button. There is an "unclicked" image and a "clicked" image. I'm drawing these images in Paint (the application, not the event handler) and I need the color around the circles to be the same as the color of the form. The color of the form is "Control" under the System color choices. I am trying to match that with making a custom color in Paint, however, I have no idea what the RGB components of the "Control" color are.

Does anyone know or know how I can find out?

I greatly appreciate any help.

 

[JohnH]

it's 212,208,200

Dim clr As Color = Me.BackColor
MsgBox(clr.R.ToString & "," & clr.G.ToString & "," & clr.B.ToString)

 

[mechwarrior3]

Oh.

Awesome! Thank you very much, JohnH. Also thank you for showing me the code so I can get other colors if I need to.

 

[DavidT_macktool]

Thanks JohnH

That sure is a nice bit of useful code... Thank you.

 

[jmcilhinney]

What happens if the user changes their theme? Not a problem in a highly controlled corporate environment but it would be in many other situations. If matching colours with the rest of the form is important you might be better off using GDI+ to paint the appropriate colour at run time.

 

[mechwarrior3]

If a user changes their theme, wouldn't all appropriate default colors change too so the problem would already be solved? Or do you mean using GDI+ would change the image to correctly match the new theme?

Quick question: How do you set it up so that an image drawn using the Paint method automatically scales the image based on the size of the control?

 

[vis781]

If you are using a graphicspath then you can do this....

e.graphics.drawimage(yourimage, graphicspath.getbounds)

 

[mechwarrior3]

Right now, what I am doing is specifying the points of the triangle I want drawn on the control so I'm specifying the image to be a triangle drawn at specific points.

 

[vis781]

You can specify those points inside a graphicspath then use the setclip method of the graphicspath so the image is displayed only inside your triangle. something like...

e.graphics.setclip(your graphics path)

then the draw image code as in my previous post.

 

[mechwarrior3]

Well, I am not drawing an image, exactly. I'm drawing a graphics object onto the control. Here is the code I'm using to draw this graphic.

[SIZE=2]
[/SIZE][SIZE=2][COLOR=#0000ff]Private[/COLOR][/SIZE][SIZE=2] [/SIZE][SIZE=2][COLOR=#0000ff]Sub[/COLOR][/SIZE][SIZE=2] DownButton_Paint([/SIZE][SIZE=2][COLOR=#0000ff]ByVal[/COLOR][/SIZE][SIZE=2] sender [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] [/SIZE][SIZE=2][COLOR=#0000ff]Object[/COLOR][/SIZE][SIZE=2], [/SIZE][SIZE=2][COLOR=#0000ff]ByVal[/COLOR][/SIZE][SIZE=2] e [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] System.Windows.Forms.PaintEventArgs)
[/SIZE][SIZE=2][COLOR=#008000]' This function paints the down arrow onto the respective button
[/COLOR][/SIZE][SIZE=2][/SIZE][SIZE=2][COLOR=#0000ff]Dim[/COLOR][/SIZE][SIZE=2] g [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] Graphics = e.Graphics
[/SIZE][SIZE=2][COLOR=#0000ff]Dim[/COLOR][/SIZE][SIZE=2] myBrush [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] [/SIZE][SIZE=2][COLOR=#0000ff]New[/COLOR][/SIZE][SIZE=2] SolidBrush(Color.Black)
[/SIZE][SIZE=2][COLOR=#0000ff]Dim[/COLOR][/SIZE][SIZE=2] myPoints(2) [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] System.Drawing.Point
myPoints(0).X() = 1
myPoints(0).Y() = 10
myPoints(1).X() = 40
myPoints(1).Y() = 50
myPoints(2).X() = 78
myPoints(2).Y() = 10
g.FillPolygon(myBrush, myPoints)
[/SIZE][SIZE=2][COLOR=#0000ff]End[/COLOR][/SIZE][SIZE=2] [/SIZE][SIZE=2][COLOR=#0000ff]Sub [COLOR=black]

[/COLOR][/COLOR][/SIZE]

And, in using your code, I would need to create a bitmap or jpeg as an image and then use that, right?

 

[jmcilhinney]

If a user changes their theme, wouldn't all appropriate default colors change too so the problem would already be solved? Or do you mean using GDI+ would change the image to correctly match the new theme?

I'm saying that if you create an image and hard-code that image into your app then if the user changes their theme your image won't match. If you use GDI+ to draw at run time then you can use the SystemColors class or just get individual colours from controls at run time.

 

[mechwarrior3]

Oh. I see. Cool.