I'm looking for a code/algorithm that will help me to draw border around different color regions inside a bitmap.I have a bitmap like the "before" image.I want to add border around the colored regions like the "after" image.
VS Version: 2005-2010 (Doesn't matter)
Language: VB.Net / C# / C++ (Doesn't matter as long as it can be called from a managed exe)
What i'm trying to do is fill a non rectangular region (actual build up out of 6 points) and draw a bitmap in such a way that it stretches with the region. Now for drawing a normal bitmap or even a trapezoid bitmap there are examples on the net. but drawing anything more then that with GDI+..
View 11 RepliesI am using vb express 2008.How I can have border around a Textbox or Label and change the color of border. Like we have different border styles and colours in MsWord and other applictions. Also how a Lable can be made transparent?
View 4 RepliesI need to draw a border of a certain width around a new bitmap.
I want to use Graphics.DrawLines, because i may want to draw the Horizontal or Vertical borders only.
For Example:
Code:
'Add this to a button on a blank form
Dim Canvas As New Bitmap(100, 100)
Dim G As Graphics = Graphics.FromImage(Canvas)
[Code]....
Ive fiddled around with this, but i cant get the math right. What must i do to get the border of the correct width around my bitmap?
Also do i need the first "G.Dispose()"?
how can i draw a free-shape (it means no particular shape or sides) and fill it in with the colors chosen from colordialog?
e.g. im gonna draw a rounded rectangle and i want to fill its insides with color red.
I have a RichTextbox set to Border style FixedSingle.. I want to have a blue boarder around my richtextbox, but it is always gray.. How do you go about changing the border color of a RichTextBox?
Obviously this doesn't work:
RichTextBox1.bordercolor = Color.Blue
I have been googling for a while and haven't found anything useful yet...
I'm working in VB, VS2008, winforms.I've got some labels to create, and I'm using the BorderStyle = FixedSingle.Is there any way to change the color of this border?It is always defaulting to black.
View 3 RepliesI need some kind of control that let's me set a Text like in a Label but when I get my mouse over it (MouseEnter) it defines a Border Color and will darken that color (probably using some transparecy property) .
View 2 RepliesHow to change a border color of ListView?
View 4 RepliesI want to change the border color of a textbox. I have tryed to override the onpaint event (setting userpaint to true), but in this case I must control all the painting events of a textbox. So, this isn't a good thing. This seems to work, but the user control has no text property. And I woult like to override the gotfocus and the lostfocus events.
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing
[code]....
Is there a way to set the color of a PictureBox border? (Visual Baisc)
View 18 Repliesim using the following code to change the textboxes border color:Private Sub BorderColor(ByRef _Control As Control, ByVal _Color As Color)
[Code]...
the weird problem im getting is if i run my program and click the add button with the textboxes being empty it correctly changes the bordercolor to red but if i press the tab key it removes all the red bordercolors, why is this?i dont want the tab key to clear the red bordercolors.
For rich textbox in vb.net i want to have single border line. Fixed single and Fixed 3D are having some dimensional effect which i do not want. And i would also like to change the color of the border.
And same thing with the button, for them how to have single line border and specified color.
How can I change the border size/style/color of my TabControl to make it blend in with my form's background color?I am unable to find any property for this in Visual Studio. Is this possible?
View 2 Repliesknows how to change the border color of a textbox at run-time. What i mean here is i already have textboxes on my form at design time, and want to change their
View 3 RepliesI've created an ownerdraw ComboBox (used as DropDownList only) in Visual Basic .NET 2010. I inherited ComboBox and set DrawMode to OwnerDrawVariable. The control itself and the dropdown items are drawn with Paint and DrawItem.
The control works fine so far, but there is one thing i was unable to change: When i click on the combobox to open the dropdown area, this new area has a very bright border color (nearly white) which I want to change to black. I've uploaded an image of the current control and how I want it to look like:
[Code]...
Even with <label>.forecolor = Color.Black. I find that my labels' borders are not {255,0,0,0} but rather {255,100,100,100), a middlish gray, Is there some system setting (e.g., themes, Silverlight) from which the standard label draws its color?( I am familiar with the sub-classing work-around, but have hundereds of instances that would have to be changed.)
View 3 RepliesI'm in the need to draw a border of different color and dimension around a panel, after a paint event.
View 7 RepliesHow to set the BUTTON border line color transparent? Because my BUTTON background pic is not a square. So when i click the button i will see the border line ..
View 2 RepliesHow do I change the Form's Border color?
View 1 Replieshow do I change the border color and border width of textbox as something shown below
If it is mouse hover I need to display one colour and on mouse down I need to display another colour.
detailed process with the source if available.
I want to change the TextBox border color if certain event is true.
For example, in a GroupBox, there is a TextBox and a Button.
If the TextBox is empty, and I click the button, I want the TextBox border color to change to red.
If the TextBox is not empty, I want The border color to remain unchanged.
How do I change the TextBox border color on a certain event?
Im quite new to VB actually and i've run my web application using VB .net. My problem here is to change the standard border color so that it would not look dull and just to make it look custom from other application. How can i change it? ive search all the properties but havent solved it.
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Ok basically I want to select a point on a bitmap and then fill all of the color that is the same as the color at that point touching that color with a different color. If that sounds confusing, just think of the paint bucket tool in mspaint or photoshop. Currently I do this by starting with the point selected and then check all the points around it in an ever expanding box until at last no new contiguous points of the color to replace are found.The bad news: This is slow as heck =(I remember my windows 98 computer could handle this just fine with no noticeable delay. So I'm either missing something algorithmically (is there a better approach) or VB.net is just too slow to accomplish this without some sort of different approach/optimization.
[Code]...
As you can see, right now I just select the middle point as where I want to start filling from, and I fill with the color aquamarine. later I want to make this more flexible, but right now I just need this to be faster.
My general algorithm works like this:Start with a 3x3 pixel box with the first pixel (already changed to your new color, with the old color stored) as your start point.Check if each pixel is the color you stored (the one you're replacing) If it is, check if it's next to the new color you're replacing the old color with. If it is, replace it and increase the size of the box.The process ends when no new pixels are replaced.
How do I set the background color for a bitmap that I create from a graphics object?
Basically I create graphichs object from a bitmap object and draw on the graphics object. T hebackgroung color is black, the drawing color follow the pens used. How do is set the background Color?
I've got a couple of instances of a user control on a flowlayoutpanel. The user control has got a couple of controls on it, and very little / almost none of the control's original space is visible. I need to know when the mouse is inside the usercontrol. What then happens is that the border color changes (of a control in the user control), and when it leaves the control, it changes back to original state.
I tried the following:
Private Sub ctrDashboardWidgetFrame_MouseEnter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.MouseEnter
Try
ShowControls()
Catch ex As Exception
[Code] .....
And it works, but it only works when you move over the original visible space of the user control, and doesn't work when you move over the child controls inside the user control. How I'll be able to achieve this to also work while the user is inside the full user control and not just it's visible space?
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('c7f9624a181a409ebf7e3e1f57df5ce8')
[URL]
I need to read a bitmap generated with paint or similar programs and interpert the picture to detect straight lines of black, larger squares in red and smaller squares of yellow, green or red. Which one of the Visual Basic environments are is best suited for this? WPF or Forms or..The lines represent walls and for start we have square objects as obsticles. I would like to create a maze and allow a dot to travel between obstacles leaving a trace of pixels and not hit any of the objects untill it exits.
I like to write the logic for it but I do not know how would I read a 500x500 pixel picture and decode the colors of each pixel. I like to assign a byte for each pixel's color (256color) but only use 4 bits of it to for start.
I am doing this as hobby. So please forgive me because I should only look at your answers during my free times.It will take some time before I could see it and mark your work as Helpful or Answer.
What im trying to do is to minimize the file size of an image to as low as possible.Its 640x480 and i need to be 30kb or even 20 kb in file size...
View 3 RepliesThe following code does not appear to draw text properly to the bitmap. The text is rendered bold and anything but "clear". Can someone please help? I've searched all over the web for a solution and have not been able to locate one.The Code:
[Code]...
how can i get the general color based on what is returned from Bitmap.GetPixel()? Like i want all shades of blue to just be blue, and so on
View 10 Replies