Convert A Drawing To Real Points?
Aug 25, 2009
I have an application which draws a graphicspath in dot style using pen.dashstyle = dot. after all, i need to send the drawing points to another hardware. I have to extract the points out of the drawing in order to send them to hardware. the background of the drawing is totally black and the dots were drawn in yellow color. as an example suppose a simple circle drawn in dots with fixed distance in yellow on a black background. how i can convert this drawing to an array of points()?
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May 13, 2009
I have a question about drawing lines. Most of the code snippets I've seen approach drawing a line with the mouse down as the startpoint and the mouse up as the endpoint. But I am trying to draw a line by startpoint as
a mouse click and then an endpoint as a mouse click just as you do on a typical cad program.
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Sep 6, 2010
Looking for something like:
dim rect as system.drawing.rectangle
For each point in rect
Debug.print(point.name, point.value)
Next
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May 23, 2009
Is it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?
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Sep 4, 2009
I have written a VB (6.0) progam that pulls data from a Comm Port. I get two bytes back everytime I real the data (i.e. FF E1).Does anyone know how to represent this as a Real number (or floating point)?
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Jan 20, 2010
I have a System.Drawing.Graphics g, which draw something in a PictureBox. Now I want to export this pGraphics to a new System.DrawingImage pImage (or Bitmap). But how?
Dim pImage As Bitmap
Dim g As Graphics
g = Graphics.FromImage(b)
[Code].....
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Mar 10, 2010
I have two graphics I'm trying to superimpose into one, then display in a DataGridViewImage cell...The Value property of a DataGridViewImage is an Image type.
Dim Image1 As System.Drawing.Image = imgl_Imagelist1.Images(0)
Dim Image2 As New Bitmap(imgl_ImageList2.Images(0))
Dim DualGraphic As Graphics = Graphics.FromImage(Image1)
[code].....
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Nov 13, 2010
I have the e.keyvalue (or e.keycode) of a pressed Key. Now the problem is, when is pressed a Oem key, to know the real $char of the key, depending from kekboard and language. In few words, starting from the e.keycode (that is not the ascii code), I would like to get the $char that the pressed key whould write in a text box....
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Aug 14, 2008
I have a multitude of VB .NET programs that generate reports in Excel that I populate from an SQL Database locally. My boss wants me to port all these to ASP.net so that users could then access these reports with dynamicly generated results on a browser page.Before jumping onto imbeding Excel objects using ASP.NET from the code I have in VB .NET I was wondering on what kind of approach to use. What could be the most effective way to convert/display these reports in real time to the user via a Browser?
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Apr 12, 2009
I created a new webbrowser and it's not showing up. I can change the height but when I change the location it says can't convert integer into drawing point. I made sure it's visible and added it in the form.
[Code]....
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Apr 17, 2011
I need to convert a Drawing.Bitmap to 4 bit grayscale. Is there any way to accomplish this? I've tried using Bitmap.Clone but I only get the usual infamous "Out of memory" exception. Would this be grayscale even if it managed to convert to 4 bit?
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Apr 20, 2010
is there a way to offset the points in a polygon without having to change each one individually the points are in an array
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May 14, 2010
I'm reading a string from a text file and placing it in a variable called "myString"Now, I want to take this string and make it the font name of a label, but I'm having a problem converting this string to System.Drawing.FontFamily.[code]
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Mar 17, 2011
I want to convert html color e.g #FFFFD2 or RGB 255,255,210 to its brush color equivalent.am doing this in the listbox_drawitem event. see the sample code am using, i got from internet, buts its not working.I want to paint the listitem background with this color, but the items background gets painted white..[code]
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Dec 3, 2010
How do you get the cursors in an executable file? Like how to extract all cursors from a .exe, .dll, .ocx, .cpl or .src file, and then convert to an System.Drawing.Icon...
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Jan 31, 2010
how can i get the points which make a polygon from a region which was derived from the polygon's points?
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Jun 3, 2012
draw individual pixels, without resorting to drawing a line and setting it's length to 1. Is there an actual ability to draw a pixel that is just 1 pixel big?
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Feb 18, 2012
I need some code to draw a resizable, draggable rectangular cursor (or selection box) on a picturebox. I found some excellent code (albeit rather old) that does just that, but on a form rather than a picturebox. I have tried converting the code - basically moving things to the picturebox events (Paint, MouseDown, MouseMove etc). It nearly works but leaves a trail behind it when you move or resize the cursor. In other words, the selection rectangle is not being erased before being drawn in the new position.
Is there some fundamental difference between drawing graphics on a form and drawing on a picturebox that would cause this behaviour? Something like, when you invalidate a form and cause a redraw it erases what you did last? If not, then I just need to dig a bit further and work out how the cursor is being erased from the previous position.
Here's the original code that works fine on a form:
Private DragRect As New RectangleF(20, 20, 100, 80)
Private Adornments(7) As RectangleF
Private MouseInRect As Boolean = False
[Code]....
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Jun 21, 2010
Say I have 3 Buttons, labelled: Unit 1, Unit 2 and Unit 3. When I click on any button I want a drawing of that unit to appear on screen at a pre-specified starting point. Thereafter when I press any other one of the buttons the unit drawings appear alongside each other in a line. So I could end up with:
[Code]...
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Aug 17, 2009
With this line...
If PictureBox1.Image = My.Resources._2star Then
I get this error: Operator '=' is not defined for types 'System.Drawing.Image' and 'System.Drawing.Bitmap'.Is there another way to say = with images?
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Jan 21, 2010
Here is my favicon code
Dim oURL As Uri = New Uri(e.Uri.AbsoluteUri)
Dim favicon As Image
If oURL.HostNameType = UriHostNameType.Dns Then
[code]....
The error is Value of type System.Drawing.Image cannot be converted to System.Drawing.Icon Is it even possible to make the favicon be the icon of the form?
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Apr 3, 2009
im using an MDI parent form and MDI Child. how can i print the image that's inside a picture box that's inside the Child from a button that's on the Parent?when i try to use print preview or print dialog, i can't get it to recognize that the document is the picure inside the picture box. i've looked up this error message:Value of type 'System.Drawing.Image' cannot be converted to 'System.Drawing.Printing.PrintDocument'.[code]
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Apr 9, 2012
I am making a web browser using geckofx. I have put the favicon in a picture box but I have changed my mind and now I want it as the form's icon. The code for the favicon is:[code...]
The favicon works fine in the picture box but i think it will look better as an icon. If i change the line Me.PictureBox1.Image = favicon to Form1.icon = favicon I get the error Value of type 'System.Drawing.Image' cannot be converted to 'System.Drawing.Icon'. How can I get this to work?
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Feb 25, 2011
How to get my real IP using vb.net?
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Jun 19, 2011
In window textbox, I'd like to just allow 2 decimal points only. I could set text box only numeric but don't know how to limit 2 decimal points.[code]...
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Apr 14, 2012
I want two decimal points value. I have used this code
lblNo.Text = Math.Round(CDec(txtNo.Text + (txtNo.Text * 0.2)), 2).ToString()
If i have value as 1.32 then its ok but if i have value like 2.3 it shows 2.3 but i want value as 2.30 How can i get this value.
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Jul 7, 2009
I have problem, when I add Real Player in form. This one..
This is a problem...
I reinstalled real player , and nothing happened , the problem still with me.
The VB in the attachment....
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Oct 8, 2009
I want to find out the X and Y position of a point which is halfway between a point and another point, in VB.net. Since there is no "direction" property (which would make this much easier...), I have no idea how to do this.
C# code is acceptable as well, though I would prefer vb as it wouldn't require a port.
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Feb 6, 2012
i have this code in vb and i want to know how to make it to add decimal points
Dim a, b As Integer
a = CSng(TextBox1.Text)
b = CSng(TextBox2.Text)
Dim result As Single
result = a + b
Lb_sum.Text = result
for example if i add 4.2 + 4.4 its show 8 instaid of 8.6
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Jul 13, 2011
I am drawing an arc within a square or a polygon with the maximum possible radius inside.When the arc is drawn within the boundary of the square or polygon,the arc length will intersect at few points on the square or polygon.How to find the coordinates of the intersecting points of arc at the periphery of the square/ polygon?
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