Dim MyGraphics As Graphics?
Mar 4, 2009How Can I Draw an Image in a Picturebox (Specific Location X = 10, Y = 10) ?[code]...
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Rendering Graphics Efficiently - DirectX - Graphics Card And Use Of DirectDraw Or OpenGL
Sep 23, 2011We have a GIS application that has some performance issues. It creates and sends an image to a web browser. We start with a Bing Maps imager, add complex polygons (complete with transparent fill), save the finished image as a PNG, and send it to the browser.
The idea has come up that we could possibly install a graphics card and use DirectX or OpenGL to improve performance. I believe this would be the case even though we ultimately generate an image instead of sending the data the the screen. I believe our processes could still make use of the API and the hardware acceleration it provides. Our process is not unlike what CGI film makers do to render individuals frames of a film, though we simply render a single image and send it, as opposed to the hundreds of thousands of images needed for a single CGI film.
So my question is: would a powerful graphics card and use of DirectDraw or OpenGL provide us a worthwhile performance boost? It can take us 20-30 seconds to render a more complex map. Which is a long time to wait on a web page...
Interface And Graphics :: E.Graphics.Drawstring Length Overflow Page?
Nov 19, 2010Im working on a project that needs to print a report of one client.Everything went smooth untill i came across my multiline input text data.When i display it in the PrintPagePreview the text go's outside my page. Even when im printing it only the halve of my text is displayed. I googled and looked everywhere but i can't get a clear fix for it.
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Interface And Graphics :: Passing Bitmaps & Graphics To Subroutines As Arguments
Jan 22, 2011I used to program with Visual Basic 6, so I have alot of old programs that I'm updating, plus I'm learning the new VB2008 methods. I'm writing a program that replaces the old "BitBlit" function which is no longer supported by Visual Basic 2008. It involves three picture boxes, one holds the sprite bitmap, a second holds the mask (silhouette) of the sprite bitmap, and a third has a background image.
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Interface And Graphics :: System.Drawing.Graphics.DrawString On Other Window?
Aug 14, 2009drawing text on a window which is not the current form's window.I remember doing this in Win32 api with getwindowdc(handle) to obtain a DC for the Window, then textout() on the DC.
View 2 RepliesInterface And Graphics :: Creating A Class Holding Some Graphics?
Jan 12, 2011Ok, I want to create a class that will handle a special rectangle graphic.In my form, I want to have two of these special rectangles. So, basically, I need two instances of that class in my form, right?I manage to initialize two, alright. But, how exactly am I supposed tomanage drawing/graphics etc in a class, and the results to be displayed in my form?
View 13 RepliesInterface And Graphics :: Error - Graphics Paths For Designing
Oct 29, 2008Using graphics paths for designing...but am getting an error when trying to add a shape to : _shapelist.add(createshape())
It says : Value of type 'system.drawing.drawing2d.graphicspath' cannot be converted to '1-dimensional array of system.drawing.drawing2d.graphicspath'
Graphics & RedrawWindow API, Clearing Graphics On The Desktop?
Sep 27, 2010[code]...
ok, i know the code is a little rough, but it should be good to give you an idea of what im trying to do, if not i will still explain.simply draw 2 lines one from left to right, another from top to bottom, intersecting through the tip of the mouse.ok, theres no problem there the lines draw perfectally the way i want them.... BUT! now heres the issue im having.i cant get rid the previous lines.i did a bit of good old "Google'ing" and ran across a few links that all pointed me to the ReDrawWindow API, so i tried (as you can see in the above code) but i just cant seem to get it worked out.
Interface And Graphics :: Draw On Tabpage's Graphics?
Jan 19, 2011So I decided to make my famous tile selector project, but instead of drawing in a form's graphics, do it inside a tabpage.Well, I managed to get it working, but it seems to... flicker.Normally, setting the form's DoubleBuffered property to True would help a lot there, but apparently, the tabpage has no such property.
When I invalidate the tabpage, I draw two images and fill one rectangle.Following past advice, those two images were created before, just once, and are stored in a variable so I don't create them every time I invalidate the tabpage.
Interface And Graphics :: Save Graphics As Png With Transparency?
Aug 1, 2010Ok I have this: This makes a sub called 'graphicspaint' then writes "demo version" to a picturebox1
Code:
Imports System.Drawing
Imports System.Windows.Forms
[code]......
Interface And Graphics :: [VB2010] - Some Graphics Effects?
Dec 5, 2011i whant do my own shadow effect. i can do the shandow. but how can i plus 2 bitmap images(1 above the other)?
View 15 Replies"Dim Temp As Graphics = E.graphics/
Oct 20, 2011My application is all centered around one form with lots of graphics drawings on it.All these drawings take place from within a paint event handler. However, the amount of code within that sub is becomming unwieldy.I have been trying to move sonme of it to another class and use the "dim temp as Graphics = e.graphics" construction to continue to draw graphics. However, I get all kind of argument exception runtime arreors when doing so (and I do not get these with the same graphics operations directly from the original paint event handler. I have also tried to pass on the original e argument, but with the same result.Is my conclusion that there is no solution to this so to continue with the unwieldy amount of code,correct, or am I mistaken somewhere. the "dim temp as graphics = e graphics" is recommended.
View 6 RepliesInterface And Graphics :: Keep Graphics Over Image
Oct 28, 2011I load my picturebox with a jpeg. If I put my DrawObjects() sub into picturebox paint event.When ever a picturebox.refresh or picturebox.visible = true (vb.net seems to draw my DrawObjects() first, then load the jpeg Image over my drawing - erasing drawing) Is there a way to get the picturebox to redraw the jpg image first then draw on it, in picturebox paint event?
View 10 RepliesUse The Graphics Accelerator To Process Graphics?
Aug 21, 2008In a Previous Thread, I asked some questions about how to create graphics. Everything was OK, until I realized that the graphics are really slow. While I was trying to find out what the problem was, I realized that the processor load was about 50% and my graphics card was not used at all. So doesn't Visual Basic use the Graphics Accelerator to process graphics? What I made is not a real program. It's like an experiment (I tried to make an image flip). Here is the Code:
[Code]...
VB 2010 Move The Game Peaces (graphics) Over Another Graphics Which Is The Game Board
Apr 7, 2011I am trying to do a game application similar to chess, where i need to move the game peaces(graphics) over another graphics which is the game board. using the mouse. How can I do multiple layers of graphics and control their movement(without using direct x, i know nothing about it)? Note: I have visual basic 2010 express, windows xp home
View 1 RepliesDim G As Graphics = E.Graphics - Is That A 'Reference'?
May 4, 2012I am trying to work out whether when I create a variable of type Graphics and assign it (is assign the correct word?) to the Graphics part of a PaintEventArgs instance I also need to Dispose of it, since I *think*Dim g As Graphics = e.Graphics is areference that that part of PaintEventArgs not a new instance of a Grpahics object, but I'm not sure.
Class A
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
MyBase.OnPaint(e)
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Animated Graphics Using GDI+?
Jun 6, 2012First part of a huge block will contain some text. That block is not always visible. it will be visible when the user is inputing a control. It is drawn in a bitmap image which will later be a part of the final image of the form.The second part consist of several small bitmap images most probably will contain a letter. These images will not change but there position will keep changing by time. These images will be free to move even beneath the huge block (If visible).I used a timer with 1 sec. interval to redraw form, but when the block is visible it keeps flickering because the timer clear the form and redraw the block.
I tried to use different container for the block like the PictureBox but when the small image goes beneath the block it just disappear.The block color code is "Color.FromArgb(100, Color.Black)" I tried lower Alpha components and that didn't make any difference.My explanation is that the background of the picturebox is not transparent. If I'm right how to make the picture box transparent?
Draw Graphics More Than Once?
Aug 21, 2010Running VB/Studio? 2010 on XP. I draw on full screen resolution of 1920 wide x 1080 hi.I have set FormBorderStyle to NONE & WindowState to Maximize which seems to be the only way to get rid of the task bar.but w or wout this setting, My graphics draws a full screen twice - mostly repeatably.When I have [code] parameters set to use 9/16th of screen horizontally, the pattern is drawn once the first time I run it and usually once if I hit F5 quickly enough after hitting Alt-F4. But if I wait long enough [a second or 2] after 'Ready' appears at teh lower left of the IDE screen, then it draws the pattern 3 times.for wider patterns, 10/16th, 11/16 up to 16/16, which is 1920 pixels wide, it usually draws the pattern once after I make this parameter change and twice from there on. The 'twice' is repeatable; it 'doing it once' the first time is not a sure thing.
There are more peculiaraities than this, but if we can find causes for what I"ve given you, it might get them all wout making it seem more complicated than it is.I don't think it's in my code; it works - it draws the right thing the right number of times w no compiler errors. But here is the guts of it:
Public Class Form1
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
[code]....
Graphics On Top Of All Other Controls?
Nov 18, 2009I have a panel in my form, with several controls that are added at runtime.I want to be able to create graphics that appear on top of those controls. Right now when I use my code, the graphics appear fine on the panel, but are hidden underneath the controls within that panel.
View 2 RepliesHow To Use E.graphics Functions
Jun 4, 2012How do you use the e.graphics functions? I have visual studio 2010 professional installed. I opened a windows form project, in the code window I type e., there's only End. or Enum., no e.! Do I need to import something at the beginning, or do I need to open certain type of project to use the e. graphics class of functions?
View 6 RepliesLoading Graphics In A Box?
Jan 20, 2010how to Load graphics in a Box?
View 12 RepliesMake 2D Graphics Look 3D?
Jul 7, 2010Is it possible to make 2D graphics look 3D in visual basic. Or do i need to use XNAEngine or Viewport 3D?
View 1 RepliesPut Graphics Into A Variable?
Mar 11, 2010I am relatively experienced with vb.net. I am currently creating a program that outputs an image, but the image being outputted consists of text and other graphical elements.
So the text element would look like:
graphics.DrawString(text, variable, variable, variable, variable)
My problem is that I cannot create more than one set of each element that I am creating. And then put that into the code that creates the image.
Is there a way of creating this line of code and then putting it into say a variable and then putting the variable into the code where the image is created?
Two Layers Of Graphics?
Apr 8, 2011I am trying to do a game application similar to chess, where i need to move the game peaces(graphics) over another graphics which is the game board. using the mouse. How can I do multiple layers of graphics and control their movement(without direct x)?
Note: I have visual basic 2010 express, windows xp home
Using E.graphics In A Module?
Oct 11, 2009I have a module where I have the code to paint bmp's to the screen, I only have two issues with it so far - here is the code for the module:
Public Sub PaintMap(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
'Code for the bitmaps in here
End Sub
End Module
In the above there is an error for '...Handles Me.Paint' saying " 'Handles' in modules must specify a 'WithEvents' variable qualified with a single identifier..."And the second error is coming from the following bit of code:
Private Sub GameForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
mMapDrawer.PaintMap()
End Sub
The error says "Argument not specified for parameter 'e' of 'Public Sub PaintMap(sender As Object, e As System.Windows.Forms.PaintEventArgs)'..."
.net - Release DC Before Or After Graphics.Dispose?
Jun 1, 2012On the back of a Windows Form, I get a window DC, create a Graphics object with Graphics.FromHdc, and then dispose the Graphics object before releasing the DC.
Private Declare Function GetWindowDC Lib "user32.dll" (ByVal hwnd As IntPtr) As IntPtr
Private Declare Function ReleaseDC Lib "user32.dll" (ByVal hwnd As IntPtr, ByVal hdc As IntPtr) As Integer
Dim hdc As IntPtr = GetWindowDC(Me.Handle)
[code]....
Why did they do it this way?Should the DC be released before or after Graphics.Dispose?It is possible that the wrong order can cause resource leaks or memory corruption?
C# - Graphics FillRectangle Except Specified Area (.NET, GDI+)?
Jun 18, 2012I would like to use Graphics.FillRectangle or Graphics.Clear with semi-transparent colour (e.g. ARGB=128,0,0,0) to darken entire area of the Graphics object except some specified (rectangular) area:I know this can be achieved with four FillRectangle calls, but I wonder if it cannot be done easier.I am aware of simple clipping (Graphics.SetClip), but this allows me to clip everything outside the specified area and I would like to achieve the opposite.
View 1 RepliesC# - How To Copy One Graphics Object Into Another
Feb 27, 2009I am trying to copy the contents of one graphics object to another, but the only was I have been able to find is based on using GDI32.DLL, which i would rather avoid using if possible.Does anyone know how/if this is possible using managed code? I don't mind if answers are in C# or VB.Net.
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Clear All Graphics In Datagridview?
Apr 27, 2010I use graphics.fillrectangle to draw rectangle in datagrid
and i want remove all rectangle , it's possible ?
Create A FloorPlan In Graphics ?
Jun 9, 2010I am trying to create a floorPlan in Vb.Net Graphics. I thought i could use say 20 pixels = 1 Linear Metre
I am currently using a Picturebox 504 * 504 Pixel. Taking a little for borders the 4 pixels off width height this gives me 500/20 = 25 Linear Metre square which is okay.
But when i draw guide ruler lines which updates the lenght of the line being drawn i cannot get it to increment per mm.
The ruler is calculated at = (pic1.Width - 4) / 20. On the mouseMove Event the measurement which i show as a string increments by 40mm or so i need it per mm.