Drawing With GDI+ On Form Load?
Aug 18, 2009Drawing with GDI+ on form load?
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Drawing A Graph On Form Load
Jun 20, 2009I'm having difficulty drawing a graph using a picturebox and the graphics type. For some reason my graph doesn't load, even if I put thec code at the end of the on load event. But it works fine of I assign it to a button.
View 2 RepliesDrawing A String On A Picturebox In The Form Load Event?
Jun 13, 2010I have a question about drawing a string on a picturebox in the form load event. So I have a picturebox on a form and in the form load event of this form I have this code:
Dim gx As Graphics = PictureX.CreateGraphics
Dim f As Font = New Font("Arial", 8)
Dim brr As Brush = New SolidBrush(Color.Black)
' Add the copyright text
gx.DrawString("1", f, brr, 2, 5)
But when I load the program nothing is drawn in the picturebox. Is there something wrong with the code or should I use the paint event of the picturebox?
By the way I also used this code in another program and there it works flawlessly, everything is drawn in the right place there when i load the program.
Winforms - Load System.Drawing V4.0.0.0 On A Windows Form In Visual Studio 2010?
Mar 4, 2012I've decided to learn Visual Basic .Net as this is what some of my colleagues work with, and this will allow me to work with them on projects.I have purchased Microsoft Visual Basic 2010 Step by Step and downloaded the sample files. When I am trying to debug the first sample application (a Windows form), it is telling me that it can't load System.Drawing V4.0.0.0. However, if I create a new Windows Form application (C# or VB.Net) this works fine.
I had a look at the References tab in the project settings and System.Windows.Forms is referenced, but the version referenced is 2.0.0.0. I have removed and re-added this reference and it stays at 2.0.0.0 and I still get the error.Does anybody have any ideas as to what may be going on?
Drawing On Picturebox Vs Drawing On Form?
Feb 18, 2012I 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]....
Convert An Object Form System.Drawing.Graphics To System.Drawing.Image?
May 23, 2009Is it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?
View 4 RepliesIDE :: Visual Studio 2010, Target .net 3.5, Dll Fails On Load - System.Drawing, Version=4.0 ?
Aug 30, 2011I have an desktop application that references several dlls. All are targeted for .Net 3.5, x86. The applicaiton has been deployed for several years and was upgraded from visual studion 2008 to 2010 last year. I have made several changes to the app since then (as recently as last Thursday) with out any issues. Now, everything builds, but when I run the application, I get a type initialiazer error when one of the projects is loaded by the main application.
The error messsage is {"Could not load file or assembly 'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.":"System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"}.
There were no changes to this project since the last successfuly deployment last week, but today I am getting this error.
VS 2005 - Form Load - Retains The Previous Values During The Form Load
Jul 27, 2009Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[CODE]...............
The insertion part of the form works great. But my problem is in the form load part......If i leave a field blank(Null),then perform Save operation,close the form after successful insertion and then reopen the form,then it retains the previous values during the form load......This is only in case where i leave a field blank in the previous data entry in the database.......But if i enter values in all fields then form load is working great.
VS 2005 : Load A Form And Allow It To Run It's Code In The Form Load But Keep It Not Visible?
Dec 14, 2009How can I load a form and allow it to run it's code in the form load but keep it not visible. I want it to do what it needs to but but not display.
View 3 RepliesDrawing Outside Of Form?
Dec 9, 2011Imports System.Runtime.InteropServices
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
[code]....
Load Creategraphic Into Picturebox On Form Load
Aug 24, 2009I would like to load a default created image at start. But seems to not be working on form load any ideas.[code]
View 5 RepliesDrawing A Graph On A Form Using GDI?
Aug 25, 2009My graph code works but i'm afraid it may not be efficient. I'm drawing a graph on a form using GDI. Basically, i'm making the entire form one big graph. Is this the best approach to creating a graph:
Private Sub frmGraphPaper_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim g As Graphics = e.Graphics
[code].....
Drawing A Line On Form
Feb 24, 2012how to draw in vb.net, and I figured the easiest way is to get my hands dirty and start coding. I figure that the best way to start is by drawing a line on the form. What I'm trying to do is use the graphics.drawline(), but I'm failing. This is what I'm using so far
[Code]...
Drawing On A Borderless Form
Dec 5, 20111)Interestingly, if I try to draw on a Form with formborderstyle = none, no drawing appears.On a form, with borders; no problem
2)If I draw from wihin a paint event, i can draw on both.However, the paint event has its own issues, most irritatingly the fact that it doesn't draw immedately, but only after going all the way back through a whole chain of calls.anyway that I can draw directly on a borderless form?
Drawing Icon On Form Border?
Apr 14, 2012i have the blow code that draws forms border with custom color and title.
'A form with custom border and title bar.
'Some functions, such as resize the window via mouse, are not implemented yet.
Public Class CustomBorderColorForm
[Code]....
Code For Drawing Multiple Lines On Form?
Jun 5, 2011I want to draw three straight lines on a form. if the following code is correct:
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim Line1 As System.Drawing.Graphics
[CODE]........
Can I use only one variable (Line1) to draw three straight lines?
Drawing Pixels With Me.creategraphics In System.drawing (yay)?
Jun 3, 2012draw 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?
View 2 RepliesDraw Over A Form, Detect Drawing In Specific Areas?
Mar 27, 2010[URL] In my Windows Form, I wanted the user to give an option to draw all over the form. But, if the user while drawing, enters the region 1, I want to assign a value to variable, say a=1. Correspondingly, if the user without leaving the mouse button previously enter the region 4, I want to b=1.After the user leaves the mouse button, I wanted to compare a and b. If both of them are equal, then Result=Done else not.
View 3 RepliesGame Programming :: Faster Image Drawing On Form?
Aug 12, 2011I'm writing a game in VB 2005 Express and at the moment it involves using the drawimage method to first draw a background and then various sprites onto my form every time a timer ticks. It's all double buffered so there's no flicker or anything but it just goes very slowly, how to speed it up. I've come across the term blitting (bitblt), which seems like it would be useful, but haven't been able to work out exactly what it is, whether it can be used in this version of vb, how to use it etc.
Here's my code (or at least an approximation of the relevant bits seeing as the whole thing is rather long):
Public Class Form1
Dim BackgroundImg as Image 'plus all of my sprite images declared
Dim Mybuffer As BufferedGraphics
Dim MyContext As BufferedGraphicsContext
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
Interface And Graphics :: Drawing A Rectangle Or A Point On A Form?
Jun 8, 2010I'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 RepliesLoad The Data From Them In Form Load?
Apr 7, 2012I have a couple of tables in a sql server database and i want to load the data from them in form load.
Here is the code i use to load the first table
connection string here
Con.Open()
Dim objCmd As New SqlCommand("SELECT * FROM Customers", Con)
Dim cust As SqlDataReader = objCmd.ExecuteReader()
[Code]...
VS 2010 Place Drawing Logic On Form Or Within Object To Be Drawn?
Sep 10, 2010I am working on a snake game for my portfolio and was wondering where the best place to put the logic for drawing the snake. Should the code reside within the snake object or within the form? Either would work, but I am wondering from a business objects/coding standard perspective where such code belongs.
View 2 RepliesClick Button To Insert Drawing, Click Drawing To Get Option To Delete - VB Versus Access
Jun 21, 2010Say 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]...
Error: Operator '=' Is Not Defined For Types 'System.Drawing.Image' And 'System.Drawing.Bitmap'
Aug 17, 2009With 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?
Load The Main Form Of A WPF So That A Separate Thread Goes And Gets Data From The Database While The Form Is In An Apartmentstate?
May 15, 2012How do i load the Main form of a WPF so that a seperate thread goes and gets data from the database while the form is in an apartmentstate? (drag-able / movable) I Know this is possible with opening a new window from your main form like this :
Private Sub openOrderWindow()
Dim OrderWindow As Orders = New Orders
OrderWindow.ShowDialog()
End Sub
[code]....
I've tried putting MyBase.ShowDialog() and .Show() and .9000+ other things The only benefit I've got out of using a seperate thread to load from the databse is i can see the screen right away (as oppose to it being a transparent box until it loads) but i cannot move it around or minimize it?is there any way to make it Movable while it loads?
Progress Bar In Status Bar To Move When Load Any Child Form Inside The MDIParent Form
Sep 16, 2009i am asking about using the progress bar into the status bar to move when i load any child form inside the MDIParent form.
View 1 RepliesError Value Of Type System.Drawing.Image Cannot Be Converted To System.Drawing.Icon
Jan 21, 2010Here 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?
Call A Form Load Parent Event From A Child Form?
Jun 3, 2011I have two forms. Form A and Form B. Form A has a datagrid that is populated from a SQL Database Table query. When a button is pressed Form B is launched that allows you to add a record to the database table. I need for the datagrid to be refreshed and show the newly added record when I close form B and go back to the parent.
[Code]...
VS 2008 Populating Cbobox On Form Load For A Child Form?
May 14, 2009i am having an issue populating two combo boxes on form load. The program will connect to an access database and pull data as instructed. Then as it pulls each record it puts it into the combo box.
This was working.. atleast i think it was. i dont recall it ever not working, however i wasn't looking for it.
My problem is that if when i load the MDI parent form and have it skip the selection form and the login form and load the next form in the sequence, it loads everything perfectly. However if the select form is loaded first, then the login form and then the form i need loaded, it will not populate. The only difference between the two different loads is that the login form calls a function that loads the form as a new project.form
I did this so that I can have multiple forms open at a time. I am assuming my problem is that I need to get the child forms handle then populating controls using that handle? but i think if I had to do that then I would beable to populate the comboboxes on the first form load using the login method of opening the form.
Here's my code.
vb.net
Private Sub frmLine1t5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.Text = "Line " & LineNumber & " Test Form"
[Code].....
VS 2010 : Load A Child Form By Default In MDI Parent Form?
Jan 23, 2011I want to load a child form which is a login form by default when the parent form is loaded.Right now when I click new file on the toolbar of the parent form, then only the login form is loaded but i want it be loaded by default without clicking anything.
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