PictureBox1.Refresh() With DrawLine ?
Jan 15, 2012
i am want to draw lines on a picture for my project.Apart from the PictureBox1.Refresh() function, i wanted to know which other functions can be applied to a PictureBox.Moreover, I am trying to draw a line from a point to another several times on the same picture.I am actually using the PictureBox1.Refresh() that is not effective in my case when I want all the lines I draw to remain on that same picture. Currently, when I am trying to draw another line, the first one is cleared and the new one only is shown.
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Dec 13, 2011
I just want to draw some lines between the rectangles in vb.net. I used g.drawstring() method to that.
But now, based on a value I just want to change the opacity of the arrow.
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Oct 12, 2011
I support a program that captures a drawings from a digitizer tablet. The tablet functions as sort of a mouse and the user uses a Stylus to draw (sign) their name into documents. An issue that has come up is that the user signs their name but the line that the signature is build with has noticable holes in it. Kind of like having a pen that skips when you write. The information is communicated into a PictureBox using a DrawLine Function where it passes the line color, the previous point and the current point.Kind of stuck with this, not sure why the tablet would produce a spotty signature when the stylus is in contact the whole time with the tablet. I have yet to port out the line x,y points to see if the tablet is producing consistent points but this is the next step.
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Jan 2, 2011
I'm a beginner to VB2010. If I draw a red line on a BLANK form, obviously its red. But if I draw a second red line, which crosses the first, is there a way of controlling the colour at the crossover position, for example returning it to the original colour of the form?
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Apr 8, 2012
how to remove a line?I have:
Dim PenColor As New Pen(Color.Black) and after I received the values I draw the line with:
objGraphics.DrawLine(PenColor, Xstart, Ystart, Xend, Yend)
The user can do this 10 times... (so 10 lines)...But if the user presses a cancel button, the last line drawn shall be removed (and the user can click until he is back at 0)..Would I use PenColor white here (to draw over the line)? Or is there a way to remove line directly in visual basic? I couldn't find it.
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Sep 28, 2009
I have a AxAcroPDF on a from which i added from the toolbox I can draw on the form using this code
Private m_Drawing As Boolean = False
Private m_LastPoint As Point = Nothing
' Start drawing.
[Code]....
Is it possible to draw directly onto the AxAcroPDF Control?
The AxAcroPDF Control dosnt have the mouseup and mouse down declatations so i am unable to easily adapt the code.
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Nov 22, 2010
I want to draw lines (paths) for AI to follow. I need to know the X,Y coordinates of each pixel in the line.Lines drawn straight vertical (0 or 180 Degs), diagonal (45 or 225 Degs), or horizontal (90 or 270 Degs) are easy to map.I need to know how to map straight lines that are not one of the those three. Like 1 degree to 44 degrees, 46 degrees to 89 degrees, and so on...
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Nov 4, 2011
I am trying to draw a bus route as a simple sequence of lines. Nothing fancy. But instead of lines, I'm getting wedges. Initially I was fine with this, because the wedges sortof look like arrows and always face towards the second point. But now I want to improve the look, and the wedges are becoming a big problem.
My suspicion is some sort of floating-point issue due to the graphics transform (lat/lons are fed in and the transform turns them into x/y on the bitmap [assuming lat/lon is euclidean is accurate enough for my purposes], so the scaling is several orders of magnitude).
Screenshot:
It actually kind of looks like the line was split into two triangles but only one of them was drawn.
Relevant Code (note: drawing is done asynchronously, which is why I'm creating a bitmap):
'-- Creating the transform --'
Dim bitmap = New Bitmap(Math.Max(1, PictureBox1.Width), Math.Max(1, PictureBox1.Height))
Dim g = Graphics.FromImage(bitmap)
[Code].....
Using DrawLines instead of DrawLine solves the issue (but why?) Increasing the pen thickness makes the issue go away (but the lines are too thick) Zooming out (increasing lat/lon view window) makes the issue go away, eventually (but I want to zoom in!)
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Nov 10, 2011
Hi, I'm using the Drawline method by capturing coordinates entered into 4 textboxes and then printing the image onto a picturebox. However, I can't get the previous line to be redrawn along with the new line that needs to be drawn. I understand that it refreshes when using the picturebox.refresh() function.
The code is:Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
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Oct 13, 2008
Is there any way to have 2d graphics that gets made by user through manual dimensions input be bound to a text box?
Is there any way to take position 1000,600 and make that zero? Can we make graphics by inputting only the next co-ordinate and have the pc automatically draw a line from last point?
Also, whats the difference between drawline and draw path? How can I get the shape to remain on screen when I toggle between pages?
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Sep 3, 2009
After running into much difficulty getting started on my little planner attachment, I found this C# program (calendar_src) floating around on the net...somewhere. So I have been working on trying to convert this from C# to VB, which I have been using an online converter. From what I know I have been going through and trying to edit the code after it has been converted to VB code as best as I can. But now I have limited the errors from over 50 to these:
Error1Overload resolution failed because no accessible 'DrawLine' can be called without a narrowing conversion:
'Public Sub DrawLine(pen As System.Drawing.Pen, x1 As Integer, y1 As Integer, x2 As Integer, y2 As Integer)': Argument matching parameter 'y1' narrows from 'Double' to 'Integer'.
[code].....
Not only this, the VB main Form1 isn't showing the "DayView1" control that the C# one is. When I first created the VB app, I didn't know how to make 2 projects in 1, so it's probably wrong altogether...but I tried. The only reasons I am wanting to go off of someone else's control is because it only lacks 1 feature that I want, and that's having a full month view, not just limited to 1-3-5-7 day views.
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Jun 5, 2009
Lets say i label "label1" , and 2 buttons named "button1" and "btnRefresh " [code]So , when user press the button 1 , the text will change. But what should i put inside btnRefresh to reload the forms ? and display the default label.text = "Form Load" ???
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Jun 21, 2010
SQL Table employees has data as follows
sno--name----img-----img_path
1-----A----Binary---D:C2009BITMAPSPICT.JPG
2-----B----Binary---D:C2009BITMAPSeric.JPG
Now I want to display picture in picturebox1. To do this I use this codes, but it does not display picture on this line: Dim arrPicture() As Byte = CType(dt2.Rows(0)("img_path"), Byte()) it shows this message,
Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.
str2 = "select * from employees where sno =" & Val(Me.TextBox1.Text)
cmd2 = New SqlClient.SqlCommand(str2, con)
[Code].....
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Mar 14, 2011
I'm trying to populate PictureBox1 through to PictureBox9. I'm using the first 9 images by way of a test before I expand the program to use the rest.
Private Sub Pop()
Dim a As Integer, x As Object, z As String
For a = 1 To 9
[code]....
This seems to work up to: -
Dim p As Image = New Bitmap(Me.GetType(), z)
At this point I get an exception which says "Resource 'Pic01.png' cannot be found in class 'Project_1066.Form1'."However, when I open the Resource page it looks something like this: -
Project 1066
[+] My Project
[+] Referencies
[code]....
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Feb 23, 2010
I would like to be able to fade out the picture in a picture box, like a fade to black deal. It should be completed in about 6 seconds. How I could do that?
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Jun 11, 2010
I cannot seem to get my image resources to load into PictureBox1.I can see all the images I added as resources in the solution explorer.They are a series of PNG files with names associated with countries.I am at the beginning stages of randomly changing the image that is displayed in PictureBox1, but I cannot even get the first image to load.Here is my code so far. When I click on Button2 I can see that my array returns a random country, but no image loads.I even tried typing in several of the countries names as well as the country name followed by png (e.g. chine.png) and again no image loads.
Public Class Form1
Dim randomObject As New Random()
Dim Flags() As String = {"australia", "brazil", "china", "italy", "russia", "south africa", "spain"}[code]......
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Sep 5, 2010
can someone show me an example script of how I would upload picturebox1's Image to an FTP connection?
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Oct 19, 2011
I have a project in which I turn a picturebox into a bitmap and I want to check if picturebox2 exists within picturebox1. NOT THE SAME IMAGE.Picturebox2 is a smaller image and isnt THE SAME image as picturebox2.For eg.If picturebox1 was The google logo.and if picturebox2 was Now they arn't the same but picturebox1 CONTAINS picturebox2.I want it to be able to check if it exists in picturebox2 and get the COORDS of the location WITHIN picturebox2I have this code so far but don't know how to finish it
Dim bmp As Bitmap = DirectCast(PictureBox1.Image, Bitmap)
Dim bmp1 As Bitmap = DirectCast(PictureBox2.Image, Bitmap)
For x As Integer = 0 To bmp.Width - 1
[code]....
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Jun 30, 2010
I'm making a program that can search for all .JPG files and display them in a ListBox. Now I want it to display the selected ListBox Item in the PictureBox1.I have tried many codes but none of them worked.The files in the listbox are listed like this: C:\Documents and Settings\My pictures\ Image01.JPG.
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Jun 21, 2010
I'm making a program that can search for all .JPG files and display them in a ListBox. Now I want it to display the selected ListBox Item in the PictureBox1.
The files in the listbox are listed like this :C:Documents and SettingsMy picturesImage01.JPG
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Sep 23, 2008
I am trying to verify that an image has been loaded into the picturebox1. I am loading the image from the web and need to verify it has arrived before I can save it to disk. If I save it to soon I will save nothing and that will crash the app. I have tried to use 'if PictureBox1.image = nothing then' ... 'End If', but that isn't a valid check. I can obviously not check picturebox1.image if it is empty or has an image.
So the question is, how do I verify that the file has finished loading?
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Oct 23, 2006
I am able to save images from a picturebox in the .png format properly, but not using .jpg or .gif formats. What I get is a black image only with .jpg and .gif. The picturebox has a white background with text and lines on it which I generate via VB coding.
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Mar 20, 2011
How to save image from picturebox1 to access database.
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Sep 2, 2011
i have search on google many hours but i dont find what i want.I have 1 standar image in picturebox1 and another picture in picturebox2 where i load it manually.I want to compare to see if there are a BIG diference like people, dog etc.My algorithm always say is diferent when found diferent light. I want to find a big diference to return true.
[Code]...
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Apr 30, 2012
how could i insert PictureBox1.Image into sql server i built the database
table name is"prodect"
column is "pimg"
i tried this code
class1.cmd = #"insert into prodect #pimg# values #'" & PictureBox1.Image & "'#"#
but it is give me this error
Error2Operator '&' is not defined for types 'String' and 'System.Drawing.Image'.C:Usersprodocumentsvisual studio 2010ProjectsaccountingaccountingForm1.vb8823accounting
i deleted this & also i got error
Error3')' expected.C:Usersprodocumentsvisual studio 2010ProjectsaccountingaccountingForm1.vb8863accounting
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Feb 28, 2012
I have a Problems Regarding with the IMAGE I create a Program That save Information of END USERS including Image...but the Image will save into Bytes.....and I have no Problem in that as you seen below.....
[code]...
This is My Problem i have this Search Engine that can Search information that can show the information needed from the database....... it works Nicely but I don't know how to show/Retrieve the Image from Bytes to Image itself and show it into the PictureBox1.. the code shown Below..
[code]....
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Apr 6, 2010
Dim Reso As String
Reso = TextBox2.Text
PictureBox1.Image.Size.ToString(Reso)
I am trying to get the current size of the image in picturebox1 to show up in textbox2.
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Aug 10, 2009
Put a picturebox1 on a form2, and paste the following into form2 public class. When you run it you will see nothing untill you force a paint event by mouse dragging the form half off the screen. If you minimize - then maximise - the image dissappears and the picturebox1 does not repaint itself??? I want the picturebox1 to be "auto drawn" somehow.
Public
Class Form2
Dim colr As System.Drawing.Color
Dim grfx As System.Drawing.Graphics
[code]....
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May 2, 2011
How can I iterate through PictureBoxes named PictureBox1, PictureBox2 ... PictureBox24 in Visual Basic 10
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Feb 12, 2009
I have a form with a PictureBox1, Texbox1, TextBox2, and Button1. What I want to be able to do is: Enter a name in TextBox1, and based on that "name", place an Image in PictureBox1 and insert the number of the Image in TextBox2.
Example: In TextBox1 I enter "Gia", and press Button1. The results will be a Image being inserted into Picturebox1 and the IDnumber of that image being inserted into TextBox2. All my images are stored in C:Images. My movie titles are stored in a sql database or a datagrid in the application. I'm very new at this and hopefully I explained this clearly. Thank you in advance.Here is my code. As you can see, it's hard coded. I need this to be dynamic, because the TextBox1 is a search box.
[code]...
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