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.
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Ok so im looking at this code and it cant possibly be right but im not sure how to do what i want.I have made a list of n points. I now want to click a button on my form and use the picturebox paint event to draw my lines between the points in the list.From what i can see i have at least two issues with this code. 1. Nowhere in this snippet do i reference the picture boxes paint event 2. I do not think that the loop i have is how to navigate through the list of Points to make my drawings.
View 14 RepliesI'm working on a game engine, and I want to be able to draw a billboarded (i.e. rectangular to the screen) quad with the center-bottom of the quad being determined by a single point.
View 1 RepliesFirst, the overall objective is to find the best point within a multipoint filled 'star', at which to start drawing text. That is, depending upon the size of the star and the number of points, there is a larger or smaller area within the points that is filled with colour. So a 5 point star has a relatively small area that is filled, in which to draw text. A 40 point star of the same radius has a much larger area filled. If I can determine the size of this area as a rectangle, then I can measure the string and draw within it using the best fit font and starting position. The code below is an attempt to answer the question but I am stuck trying to find the text area rectangle within the filled portion of the star. Some of the code exists purely to explore the means to determine how to identify this rectangle (and is probably the totally wrong direction).
The second part of the problem is in exploring the options, I tried to draw a vector to different points on the circumference of the star. This is the code highlighted. The lines drawn do not seem to be the correct length nor the correct angle but I cannot see why.[code]...
I have several picture boxes on a form (frmMain).My question is, how do I paint a point on a particular picture box at the location specified by the coordinates of the current mouse position? The snippet below shows defining some canvases and pens. But I'm not sure how to capture the mouse position when the mouse is over a particular picture box and how to paint the actual point at that location.[code]
View 3 RepliesIm getting an error right now for this code, and I'm wondering if it's me, or VB2010 has changed?
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.Left Then
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Step 1 - I plot 4 random points on an image in the picture box
Step 2 - I capture the co - ordinates for all the points
Step 3 - I draw a line from point 1 to point 2 (name it line 1)
Queries :
1) I need to draw a line parallel to line 1 passing through point 3
2) I need to draw a line parallel to line 1 passing through point 4
3) Extend the line from both the ends so that I can draw a perpendicular line passing through all the 3 lines so that it becomes a rectangle
I'm just getting started, and it's as simple as that: I need guidance to draw a rectangle or place a dot or a point on Form1, in VB 2008 Express. I knew how in VB6 -- let's build on that.
View 3 RepliesI'm drawing a rectangle snapped to a grid by getting the start point(Mouse down e.location) and the end point(mouseup(e.location). The coding I'm having trouble with is having the program determine which way to draw the rectangle(where the location should be, and the height and width.) Now, this would be extremely simple if the user started their rectangle from the top left corner and ended it in the bottom right every time. But you need to be able to drag from all angles. So does anyone have some code lying around that I could look at so I could actually get my rectangles drawn right?
View 5 RepliesIs it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?
View 4 RepliesIf I try to draw a circle by using e.g.
Code:
e.Graphics.DrawEllipse(Pens.Red, 50.133, 100.321, 0.1, 0.1)
I will get an error message. I tried something like
Code:
Public ObjectPoint As PointF
Dim cpoint As New PointF()
cpoint.ObjectPoint = New PointF(startX, startY)
e.Graphics.DrawEllipse(Pens.Blue, cpoint.ObjectPoint, 0.4, 0.4)
but it didn't work for the location and the circle size. How to draw a circle(and rectangle) by using floating point numbers?
Dim pt As Point, is the problem here, i know that this class point can belong to the types Inventor or System drawing.I want to make it part of the System drawing, how i do this ?
View 2 RepliesI 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)
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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)
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Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Me.BackColor = RGB(Rnd() * 255, Rnd() * 255, Rnd() * 255)
End Sub
then i see this error:Value of type 'Integer' cannot be converted to 'System.Drawing.Color'
When I try and compile code in vb.net 2008 I get an error that says "value of type 'system.drawing.image' cannot be converted to integer. The error happens at piccolor.image
GetDIBits(Form1.PictureBox1.Handle,
picColor.Image , _
0, Form1.PictureBox1.Height, pixels(1, 1, 1), _
bitmap_info, DIB_RGB_COLORS)
Here's the code that explains what piccolor.image is, it's a picturebox on form1 that has an image
readpic(Form1.PictureBox1)
Public Function readpic(ByVal picColor As PictureBox)
GetDIBits(Form1.PictureBox1.Handle,
picColor.Image , _
0, Form1.PictureBox1.Height, pixels(1, 1, 1), _
[Code] .....
And Imports System.Runtime.InteropServices is on the top of the module, if u need more code then let me know. Also I wonder if there is a way to bitblt directly to a pixel array.
How do yo convert a 3d point into a 2d point that can be displayed on the screen? This is the basic code that I need:
Dim ScreenXCoord as integer
Dim ScreenYCoord as integer
Private Sub ConvertPoint(PointXCoord as integer, PointYCoord as integer,
[Code[,,,,,
I;m trying to learn from vb 6, and am having trouble with the simplest of things. I got a function that needs a point, im trying to feed it my 2 x and y integers and it can only accept a point. How can i convert my 2 integers into 1 point.
View 2 RepliesI 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()?
View 13 RepliesI 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?
View 3 RepliesI want to know how I can convert string to a point ( {X=150, Y=150} ) I'm having a little trouble figuring this one out.
View 2 RepliesI'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]
View 1 Repliesi tried this, but had invalidcast at line 2.
vb.net
Dim a As Array = Array.CreateInstance(GetType(Integer), New Integer() {1}, New Integer() {1}) Dim b As Integer() = CType(a, Integer())
what i'm trying to do is to create an Integer array with LBound greater than 0. any way would be accepted, or can i say this: my function that takes i As Integer() as its argument does not have to check the LBound of i because there is no way LBound of i will ever be greater than 0
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]
View 1 RepliesI hve been working with points a lot recently, and I have been wondering if there is a way to set a point without setting point.x and point.y separately. For example for (3, 5): Point1 = (3, 5) But that isn't right
View 4 RepliesHow 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...
View 2 RepliesPrivate Function SingleToIEEE754Hex(ByVal pValue As Single) As String
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when I used
Integer.Parse(CustomerID, System.Globalization.NumberStyles.HexNumber) to convert from hex to interger it display like this &H566
ho to remover &H or how to convert in another way .
I'm a C# programmer but am converting some code from C# to VB.NET. In c# I can simply use (int)blah.getValue() where getValue() returns an Integer?
View 8 RepliesHow do I convert from a string to an integer? Here's what I tried:
Price = CInt(Int(txtPrice.Text))
I took out the Int and I still got an exception.
