Draw A Rectangle In Picturebox In The Mousemove Event In Application?
Feb 14, 2012
Actually I'm creating a simple paint application in VB.Net 2010. I want to draw shapes in my application same as we do in Microsoft Paint using mouse.
I'm a bit successful also using mousedown and mouseup events of a picture box. The mousedown event sets the starting point and mouseup event sets the ending point(diagonally opposite point of rectangle.) The problem is "Nothing seems to be occuring between mousedown and mouseup events(Well..that is obvious because I didn't add any code on mousemove event). My question is: "Can I do something to see a growing rectangle during mousemove event?". The rest of the drawing should remain unaffected.
View 1 Replies
ADVERTISEMENT
Oct 5, 2009
I am trying to draw a rectangle in a PictureBox (100 x 50)
Using gr As System.Drawing.Graphics = Picbox.CreateGraphics
Dim rect As New System.Drawing.Rectangle(10, 10, 80, 30)
gr.DrawRectangle(Drawing.Pens.Blue, rect)
End Using
From looking at the examples in my book, I "think" it should work, but alas, tis not working - nothing is drawn.
View 1 Replies
Oct 30, 2011
How can i draw a rectangle in picturebox using coordinate(X , Y) and size of rectangle from textbox?
View 7 Replies
Mar 29, 2011
This code is used to demonstrate drawing a blue border around a picture box...(I've numbered the lines so I can refer to them below
1 Dim objGraphics As Graphics
2 objGraphics = Me.CreateGraphics
3 objGraphics.Clear(SystemColors.Control)
[code]....
Regarding line 1, the author says, "To instantiate an object in code, you create a variable that holds a reference to an instantiated object".!Regarding line 2, he says "the CreateGraphics method is pretty complicated, but for now, just know that it instantiates a new object that represents the client area of the current form".So now I have two new instances, the one from line 1 - an instance of a graphics object, and this one from line 2 representing the client area of the form.The rest of it is pretty clear; But Why can't I draw the rectangle around the picturebox itself? Why do I have to draw it around the "instance" of the picture box?
View 13 Replies
May 29, 2012
I have a form in which I draw a rectangle and a line depending on the button click. I basically want a dynamic line/ rectangle that moves when the mouse is clicked on another point on the picturebox. I found some code online for a rectangle, and I'm trying to extend it to draw a line too, but i'm having some issues. The line is not displayed when the mouse is lifted(mouse up event).
Here's my code:
Public Class Form1
Dim selection As Rectangle = Nothing
Dim m_Drawing As Boolean = False
Dim m_Start As Point
Dim square_click As Boolean = False
[Code] ......
View 6 Replies
Jul 23, 2007
correct way to draw rectangles onto a picturebox, and also to explain the paint event more clearly.Basically I have an application where a picturebox contains an image, this image is a small computer monitor as such:
The idea of this part of my application is that the user can draw small window size rectangles which represent windows later on. I have already used some excellent code on this forum to be able to draw the rectangles on the picturebox (As pictured above), the rectangle outline is drawn from MouseDown and MouseUp respectivley.
The problem I am encountering is with the 'repainting' of this rectangle. I have included code to repaint the rectangle in the Paint event of the picturebox. This works when you move the picturebox 'off screen' and bring it back. However when the form is re-sized or other various things occur the rectangle is not re-drawn? even though the picturebox 'appears' to be clean and always there!
My code is below, it is not full and complete, but the few main subs listed should give an indication as to how I am currently creating the rectangle:
Private Sub picboxAdvDisplay_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picboxAdvDisplay.MouseDown
'Set the flag for Drawing enabled
[code]....
1. What is the CORRECT way to draw a rectangle onto a Picturebox?
2. How do you code so that the rectangle is ALWAYS visible/drawn on a form re-size, minimise, window overlap etc etc.
View 11 Replies
Aug 25, 2010
Basically Im converting my old VB6 chip8 emulator into Vs2010 version, so far everything works except the drawing routine.In Vb6 it was easy, simply pict1.line(x1,y1)-(x2,y2),vbwhite, BF etc..I could write to the picture box directly within a different sub called from main() and also call the form refresh etc.In Vb2010 it seems entirely different, you create a graphics object.Dim g as graphics Then assign it to an object with the create graphics method g=picturebox1.creategraphics then use g.drawline etc.. <<< this normally goes in the paint event of the object.The problem im having is that nothing displays until the paint event, which is not how my code works.Basically the emulator procedure framework is:-
LoadRom
Initialise stuff
Emulate
-Fetch opcodes
[code]....
As I try to draw on the picture box from within the DrawRoutine sub nothing displays, is there something else needed to cause a draw event to happen?
View 16 Replies
Jul 23, 2009
I have a picture box that i can click on and drag the mouse around to define a region with in it. The problem is the region is not reset when you click and drag, only when you simply click. You then need to click and drag again and it does not set the region to the new location of the mouse. It is hard to explain so i have example code below. Simply copy and paste into a form named Form1 of a new project and run.
Option Explicit On
Option Strict On
Public Class Form1
[Code].....
View 4 Replies
Dec 3, 2011
This code is to draw rectangle. How can I draw rectangle divided to four rectangle or more
e.Graphics.DrawRectangle(Pens.Coral, 50, 200, 30, 40)
View 11 Replies
Aug 3, 2009
I have this in my form:
Lots of ovalshapes... What I want to do is that when the mouse is over one of the shapes, it will display the name of the shape in a label. I can easily do it for each shape like this:
Private Sub p34_mouseover() Handles p34.MouseMove
Label1.Text = p34.Name
End Sub
[Code]....
But if I do it that way, I need to make like 120 subs. Is it possible to make one sub/function/whatever that handles this for every ovalshape?
View 4 Replies
Jun 20, 2012
Alright my goal is to test to see if the user has dragged a label over a button. I have add event handlers for MouseMove and ButtonEnter, the trick is that i dont want the buttonEnter sub to fire unless the user is actually dragging a label.Dim dragging As Boolean = False
[Code]...
I thought would work but because the user is dragging the label the mouse never actually enters the button field. I also tried doing lbl.location = button.location... but unless the label and the buttons are the exactly the same size in exactly the same location then the event wont trigger.
View 3 Replies
Jun 21, 2010
I'm writting program in VB 2010, but I have a problem. I want to draw a temporary line on PictureBox control MouseMove event. That works fine but deleting of that line doesn't work. I tried to draw the white line on the same coordinates (PictureBox's background is white), but won't work.
Here is the code: Private Sub drawing_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles drawing.MouseMove
[Code]...
View 7 Replies
May 19, 2009
I am using VS 2008. I have a listview control whitch 'checkboxes' property enabled.My question is: how can I trap a MouseMove event over an item only, excluding the associated checkbox?I have the following code in MouseMove event of the ListView control but it cannot differentiate between an 'item' and a 'checkbox:
Private Sub mylstview_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles mylstview.MouseMove
Dim oListViewItem As ListViewItem[code]....
View 2 Replies
Oct 14, 2011
I have a form that uses a button to draw a line and a second button to draw a rectangle. I have a third button to clear the form but can't find a code example to code the Clear button.
View 4 Replies
May 17, 2011
is this possible to draw a red rectangle about a text box? How?
View 4 Replies
Oct 3, 2010
I have a datagridview in my application. and I have created a function for searching different words in datagridview. When the functionfind the word in one cell of datagridview, the cell is selected, but I want to draw a red rectangle in the selected cell when I found the searched value.
I have made my application in visual basic.
View 6 Replies
Apr 29, 2009
Public Class Form1
Private opsets As New List(Of OpSet)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
opsets.Add(New OpSet(Me, 100, 300))
[code]....
View 1 Replies
Mar 12, 2011
User launches the application, enters width of circle, then enters width and height of rectangle and presses the button. Then app draws the circle with rectangle inside of it (if it fits). App should output the coordinates x1;y1 , x1;y2 , x2;y1 , x2;y2 (corners of rectangle) somewhere on form and would be great if it could post those coordinates on x and y axes (optional).
View 23 Replies
Jun 6, 2011
Draw rectangle outside of form?[url]...
View 1 Replies
Sep 28, 2009
i've found this code on the web that allow me to draw a rectangle and keep the Image inside this. But there is a way to make draw this rectangle in all the direction and not only from left to right and top to bottom?
Public Class frmSS
Private Declare Auto Function BitBlt Lib "gdi32.dll" ( _
ByVal hdcDest As IntPtr, _
[code]......
View 4 Replies
Jun 25, 2011
Since using the DrawArc function in GDI+ isn't very accurate when drawing a small rounded rectangle, I am using RoundRect instead.
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
Dim hDC As IntPtr = e.Graphics.GetHdc
Dim rc As New Rectangle(10, 10, 64, 24)[code].....
This will draw a nice rounded rectangle, but it will also fill it with a white brush, erasing what I don't want to have erased.How can I draw this without erasing the inside of the rectangle?
View 2 Replies
May 20, 2010
I have drawn a diagram of lines on a panel using the g.DrawLine command. I want to be able to zoom in to the diagram and define the zoom area by two cursor picks. I get the coordinates of the picks and draw a rectangle using g.DrawRectangle. This works fine but as I move the cursor around, the rectangle becomes solid black (with all the DrawRectangle commands). In VB6 I used a rectangular shape on top of my diagram but you cannot do this in VB2008. I need something like drawing in XOR mode. Somehow as I move the cursor I need to undraw the old rectangle and draw the new rectangle.
View 11 Replies
Dec 8, 2009
how to draw and resize by selecting a rectangle in winformsby using power pack tools or graphics.drawrectangle() method
View 1 Replies
Sep 23, 2011
In order to draw a text over a ComboBox (or whatever else), I override WndProc() and catch 0x000F message -- which is WM_PAINT.Code is like the following:
Protected Overrides Sub WndProc(ByRef m As Message)
MyBase.WndProc(m)
If m.Msg = &HF Then[code].....
It works very well, but there is a problem: if I drag parent window on a side of the screen (in order to hide a part of the window form), the visible part of my control is infinitely redrawn. This makes the text redrawn over itself. I suppose there is a way to draw only invalidated (hidden) part of the control. How can I do?
EDIT:Here is the problem in one picture: http:[url].....(it's a link since I can't post image for now.)
UPDATE: I tried using BeginPaint API, but the RECT structure included in the returned PAINTSTRUCT structure contains only zeros.
If m.Msg = WM_PAINT Then
Dim ps As PAINTSTRUCT = New PAINTSTRUCT
BeginPaint(Handle, ps)[code].....
Can I do something with that? I don't know how to proceed, in order to paint only invalidated area.
View 2 Replies
Oct 7, 2011
I'm using e.graphics in the Me.Paint event to draw a string in the form. There is a rectangle shape with gradient in the form, and the string is supposed to be drawn on top of the rectangle shape. However, when I run the program, the string is drawn under the rectangle shape, and is therefore invisible... How do I fix this?
View 2 Replies
Oct 5, 2011
How to draw Rectangle in Print Preview Dialog I have used Graphic Class For it but it is not working my code is following
[Code]...
It is drawing Rectangle and Line on other Controls but not on Print Preview Dialog
View 3 Replies
Nov 9, 2010
I want to Draw an Rectangle on a PictureBox and after that I must be able to move this Rectangle around. I have made now that I can draw a Rectangle on a Picturebox via MouseDown and MouseMove Events, but I dont know how to Move the Rectangle.
Private Sub PictureBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseDown
Try
If e.Button = MouseButtons.Left Then
cropX = e.X
cropY = e.Y
[Code] .....
View 1 Replies
Mar 28, 2010
i am making application for image cropping. where in this application i want to draw transparent rectangle on picture box.eg> you must have uploaded photo on orkut , when u upload the photo if photo is too big croping windows comes up and tranparent rectangle with resizable appears on image.similarly i want resizable rectangle on my picturebox where user can resize the rectangle and then user press crop button it crops off that much part.my question
1) how to draw transparent rectangle on picturebox
2) how to resize it.
View 3 Replies
Oct 14, 2010
How to do it?
View 8 Replies
Jul 29, 2009
how can I draw a rectangle around the listbox's selected item? Something like the default windows focus rectangle.
I know I have to draw a custom ListBox, I have already done everything but this... This is what I'm trying, but it doesn't work
vb.net
If ColoredListBox.SelectedItem <> Nothing Then
Dim pos As Point = Me.PointToClient(Control.MousePosition)
e.Graphics.DrawRectangle(Pens.Red, pos.X, pos.Y, 259, 12)
End If
Is it possible to get the bounds of the selected item?
View 28 Replies
