VS 2005 DrawImage Scales Incorrectly
Jul 18, 2010
Basically, what I am trying to do is scale part of an image. In VB6 the Scaling version of the BITBLT api worked fine, however in .NET's Drawimage version of it works okay, until a different destination size is specified.url...The red is from the next tile on the source image. and the bottom is missing one row of pixels.I have also screened this, and counted that the left side isn't properly doubled and the very first column of pixels is in 1x1 squares instead of 2x2 like the rest of the image.I don't get why it's obtaining outside the range I set, so here is my code incase it helps, note that you'll need to define a blocks array:[code]
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Jan 5, 2011
In this question I managed to combine two .png images into one, and then display the result in a pictureBox image.However, the pictureBox seems to scale up my image! Makes it bigger!The pictureBox size is 96x128.The two images I have combined are 96x128.The pictureBox's SizeMode is set to "Normal"
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May 9, 2012
I am trying to build a socket program and I need your help.The program is to be used for Scales.I need to trap the data from the scales and then update the DB.
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Jun 19, 2011
With reference to this article:>>[URL]..and the formulae at the bottom of the article I've added a small bit of content.
If you want to try it and see the content I've added, please go to the bottom of this page:>>[URL]..
The conversions only go one way from a Celsius value to all the others.
Select ADD CLASS... from the
PROJECT menu.
Type in Temperature.Vb
for the Class name and click on the ADD button.
[Code]...
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Mar 3, 2010
I'm importing some data from MySQL into a VB.NET application with .NET charts. At the moment, the chart is plotting points by date, which means that when you zoom in, each major tick mark simply displays the date.It would be better to change these dates to times (hours) when one zooms in.Presumably there's a parameter to do this, but I can't find it.
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Nov 14, 2011
I have these three images that I have drawn to my form.
GraphicsBuffer.DrawImage(ButtonEasy, New Rectangle(25, 330, 100, 50), 0, 0, 100, 50, GraphicsUnit.Pixel, ImageAttributes)
GraphicsBuffer.DrawImage(ButtonMedium, New Rectangle(150, 330, 100, 50), 0, 0, 100, 50, GraphicsUnit.Pixel, ImageAttributes)
GraphicsBuffer.DrawImage(ButtonHard, New Rectangle(275, 330, 100, 50), 0, 0, 100, 50, GraphicsUnit.Pixel, ImageAttributes)
But I want to make a Boolean expression for when they are clicked so I can trigger the events to load the game mode selected.
Do I do this through resource code or is there a simply way to do this. My idea seems like it would be bad and not syntaxically correct.
Edit: I've gotten to this:
Private Sub ButtonEasy_MouseClick(ByVal sender As Object, ByVal e As MouseEventArgs) _
Handles ButtonEasy.MouseClick
[Code].....
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Jul 8, 2009
At the top of my code I have:
imports system.drawing.graphics
but when I try to use it, no DrawImage or DrawString methods are available. I can get DrawImageAbort rather ironically.[code]...
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May 15, 2011
I've a program that draw an image in a picturebox with DrawImage. This image, a ball (.png transparent), every second is overwritten by another ball of different color. After 3-5 second the edge of the ball becomes bad, because of overwriting.
I tried to clean the background with a FillRectangle before any overwrite, but i need to preserve the windows form background. How can i do that?
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Mar 21, 2011
I'm using the following code to display an arabic date:
[Code]....
Today this is displaying as 161432. However, according to a user, the arabic text should be in the middle with the year 1432 at the end. However, when you highlight the text, it highlights back to front.
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Sep 8, 2009
I have a data table in my dataset which was created with the following script.[code]
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Jun 1, 2010
Well currently im programming a game in Visual Basic and I have it to the point where it draws a map on the form, it loads maps to different areas when you walk on the map, and I am doing so by using Graphics. DrawImage which redraws the map on the screen with the character in the new position. It was working quickly and smoothly until now.
I added some more sprites and now it starts to lag badly then it will throw a Out of Memory exception and it will display a big red x across the form. I watched the memory now as i move the character one spot on the forum and the memory increases 100mb's each time. It wasn't doing this before which is weird. I managed to fix the out of memory error using GC.GarbageCollect but I read that this is bad, also the character still lags across the forum. I really didn't want to release the source code until I was finished but seeing as I need help quickly because this is for a project I am working on for Thursday (End of semester Programming 2 Junior year of high school) I don't have many options.
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Apr 6, 2010
In my user control's paint handler I iterate over a collection of predefined Bitmap objects and draw them to the client area thusly:
C# version:
private void Control_Paint(object sender, PaintEventArgs e) {
Graphics g = e.Graphics;
foreach (BitmapObj bmpObj in _bitmapObjCollection) {
g.DrawImageUnscaled(bmpObj.Bitmap, bmpObj.Location);
[Code] .....
The code works fine but starts to bog down when a dozen or so objects are added to the collection. My question is: Is there a way to speed this up? Would it be possible to use the Win32 bitblt function to replace DrawImageUnscaled? And if so how?
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Dec 21, 2010
Graphics.DrawImage loses resolution
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Nov 15, 2010
See graphic.Is this right? (Top is what I am seeing, bottom is what I expected to see.) Do I just really not understand Arabic culture and ways, or is there something wrong here?
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Nov 5, 2009
I am working on a website at the moment which is displaying a strange bug with generated word documents. The site has a feature on it which allows the user to download a word document containing information related to their visit. This file is generated via some vb.net code and takes an xml template of the final document and inserts the relevant content required.
The strange behaviour is that on some machines the .doc file generated displays fine and on others it displays as XML when opened in Word. Both behaviours have been seen in the same version of Office (2003) but on seperate machines. My question is really whether the error lies with the set up of word on the individual machines, or whether there is an error in the code.
The code to create the file and download it is as follows:
Response.Clear()
Response.ClearHeaders()
Response.AddHeader("content-disposition", "inline; filename=MyNewFile")
Response.ContentType = "application/msword"
[code]....
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Feb 26, 2010
I am trying to setup a few fixes in some code that have caught me out, and am trying to get some exceptions to spit out if the developer trys to access a property where rules haven't been met.
[Code]....
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Feb 4, 2011
I have a temp dataset (ds) that I load with data from a filtered dataset. I run this in a loop essentially populating the temp dataset with select records from the main dataset. I then merge the temp dataset back to the main dataset (dsSpecifics). The issue I am running into is that the records are loaded into the temp dataset in the way they were merged. record 1 is at row 0, record 2 is at row 1 and so on. When I merge the ds back to dsSpecifics, they load out of order but in a predictable way. Here is a snipit of the code:
myAircraft.Reset()
While myAircraft.MoveNext()
Me.TblAircraftSpecificTableAdapter.FillBy(Me.DsSpecifics.tblAircraftSpecific, CInt(myAircraft.Key.ToString))
[Code].....
It seems that after the final merge, the merge starts with the last record of ds and and then rolls over to record position 0.
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May 4, 2010
[URL]...The link above is a thread showing the application I'm working on. (2008 Pro)I have since created an MDI Parent form which holds my 16 camera forms. What I am having trouble with is dividing the MDIParent's Width and Height by 4, to display 4 equal height/width camera forms within it.
I've tried all the available properties (Rectangle, ClientArea, etc) and none seem to calculate correctly.Using Me.Width and Me.Height ALMOST worked, but again, it was about an inch too skinny and short.
What do I need to do in order to retrieve the exact size of the MDIParent's Client Area?
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Dec 9, 2009
When connecting to a Sybase ASE database via ODBC using the code below, I'll occasionally get a '[IM006] [Microsoft][ODBC Driver Manager] Driver's SQLSetConnectAttr failed' error. this be caused by my code? I read here that I should be using the 'With' statement instead, but I don't understand how that would affect this.
[Code]...
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Mar 5, 2011
I have 2 buttons, named: 'Select item 1' and 'Select item2' to these buttons I have added images. how? when the form loads I execute this
Private Sub LoadButtonImages()
btnCompare1.Image = My.Resources.close1
btnCompare1.ImageAlign = ContentAlignment.MiddleLeft
[Code]....
when I test the program on my friend's pc it gives an error and does not display the image. ( and yes I already tried putting the executable in exactly the same folder as it is on my pc WITH the image folder.. )
so is there any way to use the first method of loading the images and ensuring the size is correctly? Ive added 2 screenshots to show you what I mean by incorrect size..
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Feb 25, 2009
I've nearly finished my latest project (VB 2008 Express Edition) I built the project and ran the .exe from inRelease and it appears and works exactly as it did in Visual Basic
When I carry this .exe to any other computer, it displays differently. The biggest difference is the font size in labels (grows on other machines) and the size of the tabcontrol is a bit larger on other machines. see the links below for comparison (coding machine vs other machine) [URL]
note that both machines were set at the same screen resolution, both were using the default Windows XP "Theme" and display fonts appear to be set the same on both machines. I've tried this on about 3 other XP machines with the same result (only looks correct on the machine I coded on)
I've specifically used Microsoft Sans Serif font, size 8 (VB seems to display this as 8.25pt in the properties window) I have also tried making all labels "UseCompatibleTextRendering" both true and false with the same result. Perhaps something on the original (programming) machine is different that is throwing this off? Am I missing a step when building this project? If other encounter this problem often, what steps do you take (when programming) to avoid this and allow the form(s) to display correct regardless of the user's settings?
Edit: One difference can be found in (Right Click on Desktop -> Properties -> Settings Tab -> Advanced Button) the DPI Setting on the coding machine is Normal Size (96 DPI) The DPI on the other computers is Large Size (120 DPI)
The application will be used by roughly 100 folks on various systems (some Windows ME, most XP). How can I prevent things from going crazy with different user settings?
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Nov 27, 2010
I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
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Oct 9, 2009
using DrawImage I can copy the whole source picture into destination one using its left&top corner and width&height sizes...butI would like to copy A REGION of source picture into destination one using my "starting corner" and my sizes.
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Feb 7, 2012
I am using VB 2008 & drawimage function to copy image A to Image B. My problem is image A has many different colored patches on it and I only want to copy the ones that have a certain RGB value. I was going to set the masking color to the RGB value but remembered that defines the color to ignore - Im interested in the opposite.
I know I could loop through all the pixels and check its color, but its way slow and Im hoping theres something better?
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Feb 5, 2009
This is my first post to these forums so forgive me for any etiquette I may be disregarding.I am creating a custom control that has a TabControl on it. The user will then double click or right click the TabControl to display a ContextMenuStrip asking if they would like to add a new image (or tab) to the project. After they select the image file, I create a new tab, add that to the TabControl, and then I want to create a PictureBox that I draw on in a particular way depending on space available and several other factors.
Where I am having the issue is in drawing the image to the PictureBox, it is only displaying the BackColor and none of the DrawImage work. It is important to note that because of what I am doing it will not suffice to set the PicBox.Image = ImageFile or PicBox.BackgroundImage = ImageFile. I need to select tiles from the image file and then draw them into the PictureBox in a particular way, which changes if the control resizes. Also, I am using a PictureBox because the final image within it can potentially be larger than the containing tab page, and therefore I want the TabPage to generate an AutoScroll bar. If there is another way to do this, please let me know.
Below is a very simple example of what I have currently. What I suspect to be happening is that the PictureBox's Paint event is firing after I do my DrawImage work and basically overriding what I did, but I hope I am wrong.OpenAddTilesetForm() simply displays a form for the user to select which image to use, and the properties pertaining to it.
[Code]...
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Nov 15, 2010
In the following code is the way to make a picture transparent (picture i1 is emty and opacity can get values from 0.00 to 1.00[code]...
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Nov 30, 2011
[Code]...
I don't know how to distort bmpR with destinationPoints0. Which graphic method do I use to transform it? Muchas gracias, Onion Ring (fried) Onion is a recent refuge from Mac OS X and hates Mac App Store. System: Windows 7 x64
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Jun 5, 2010
I'm trying to improve the speed of my call to:Graphics.DrawImage (Image, Rectangle, Int32, Int32, Int32, Int32, GraphicsUnit, ImageAttributes)I want to display two images, where the old one fades smoothly into the new one, driven by a Timer tick of 10 or 20 ticks a second. The following code runs fine on JPEG files of around half a megabyte or less, but takes much too long (up to half a second) fora 2MB JPEG. Using the Stopwatch control, I isolated the problem to the two .DrawImage calls. Do I need to do this in DirectX or is there a way to improve the efficiency of the routine? I thought of trying to resize the two images beforehand to fit the rectangle, but that's not a simple call (I don't think), and it might just mean moving the delay elsewhere.
(Dim fltOpacity As Single = 1.0F 'opacity value)
(Dim BGrafx As BufferedGraphics)
* * * * * * * * * *
[code].....
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Feb 20, 2009
How do I flip the image upside down (below the first image) Like as if a house were at the waters edge and you can see the house, and the reflection in the water?
code for drawing the image (which is a battery)
VB
'Finding center'
Dim batX As Integer = 160 - (imgDct(cbo_Battery.Text).Width / 2)
Dim batY As Integer = 200 - (imgDct(cbo_Battery.Text).Height / 2)
'Draw Battery
[Code]...
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Jun 14, 2009
I am working in VB.net 2008. I have a Window application that will be used to eliminate a lot of manual copy and paste activates from one work sheet to anther. Workbook 1 (wbMatrix)Never has the same layout twice. The destination Workbook2(wbTemplateSAS)has a defined layout that remains constant. To collect the copy ranges the user pouplates the text box on the form. Only the textbox that need popualted. There are 16 total. These textbox values are then concantianted to create the range. This process is intiated with button click.
When itinated the copy and paste works but not as expected. Cell.text range paste correctly In A9, OEC range paste correctly in P9. After that it skips the next colume as it should. Then in colume R9 the error starts the a paste of the range A10:B10 form wbMatrix is pouplated in R9:S9 Then It paste accoring to the application T9. Then in U9:X9 it paste date for wbMatrix A10:D10. It paste correctly again in Z9. it has the same error agiain till the next Range. It then paste correctly in 9AD. This should be the last paste that have values entered in the textbox to create the range. But it does not finish it paste the balnce of the cells form wbMartix on wbTempateSAS.
To sumerize above
wbMatrix Paste to wbTemplateSAS
First Row =10
Last Row = 158
[code]....
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