I want to make a graphic of certain data in my program. The problem is that the zedgraph doesn't zoom out to see the dots or lines in the graphic. This is my code:
[Code].....
I've tested the codes that Zedgraph provides in his homepage, but that code only work if you call this subroutine in the form load. Instead of that, I want to make the graphic when I clic a button.
I have a converted VB6 App that would draw irregular shapes on a PictureBox when I click on a button, and these irregular shapes would persist until I either close the App or erased the PictureBox to start the display anew.I converted my App to VB.Net to do the same, i.e. draw on a PictureBox again, but the drawn lines appear briefly and then, at the end of the drawing process, when my App returns control to the Operating System in wait for another event, the graphics disappear as if erased by the App (which I don't do of course).I have created a Graphics Object associated to my Picture Box as:
Dim CurrGraphics as System.Drawing.Graphics
CurrGraphics = PictureOut.CreateGraphics
I then use the DrawPolygon and DrawLine methods to add the irregular shapes I want:
CurrGraphics.DrawPolygon(CurrPen, Pts)
CurrGraphics.DrawLine(CurrPen, Pts(I).X, Pts(I).Y, Pts(I+1).X, Pts(I+1).Y)
where CurrPen is a defined Pen, and Pts is the Points() array with the coordinates of the displayed shape. Several dozens irregular shapes are drawn and then the subroutine stops, and returns to waiting for another request from the user.What could be the prime reason why graphics do not persist in a PictureBox, and are erased immediately after they are created ?
PS: I do not use the PainEvent of the PictureBox PictureOut, as in the example given in the VB documentation (below), as the display process is initiated by clicking on a button, and I cannot relate how to transfer control to the PaintEvent as below:
Private Sub Form1_Paint(sender As Object, pe As PaintEventArgs) Handles _
MyBase.Paint
' Declares the Graphics object and sets it to the Graphics object
[code]....
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I use the "Paint" version of the form. I am a beginner so excuse my poor skills. Shouldn´t this be a very simple little problem?
I work with Visual Basic 2008 Express
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this is the
'This program computes customer's bills at the pizza shop for all combinations of
'crusts, toppings, sizes and discounts
Option Strict On
Public Class PizzaForm
[code].....
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[Code]...
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If IncomingCommand.Substring(0, 2) = "-1" Then
form1.close()
End If
End If
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The textbook shows the following code: IN THE(General) (Declarations)AREA we are told to type the following:
' Create a Graphic object to use with the game's bitmap
Dim myGraphicObject As Graphics = Me.CreateGraphics
' Create an empty Bitmap Object
[Code].....
is there a difference between VB 2005 and VB 2008 that would be causing the errors? or am I missing something subtle maybe mistyped?
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[code]...
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Public Sub DrawObjects(ByVal g As Graphics, ByVal Scale As Single)
Dim drawObj As GraphicObject
Dim i As Integer
[code]....
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Public Class Form1
Dim PlayerSprite As Image
Dim BGImage As Image
[code]....
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