I'm currently working on a project where I need to bind 3 different bitmaps.Bitmap1, Bitmap2, Bitmap3.
I tried :
bitmaps = Bitmap1 & Bitmap2 & Bitmap3
But of course, that didn't work.If it's possible, I also need Bitmap1 and Bitmap3 to have a fixed size and Bitmap2 to change its width if the form is resized.
I want to know if there's a faster way to draw images onto a picturebox based on a list of point.
vb
Dim MyPoints as New List(Of Point)
Dim MyBitmap as New Bitmap("C:MyBitmap.PNG")
[code]....
Now, This code may be a little sloppy, but I just put it together. The image isn't very simple, but it's simple enough. After about 10 images that need to be drawn, it starts to get slow.What would I need to do to ensure it draws the images faster? If I made the image itself smaller would it make it go faster?
I need to draw a bitmap background with one or more moving bitmaps in the foreground; something like a chessboard where pieces move across it. I use a timer-tick event to redraw the background and then draw the relocated foreground image like the code below. But I get flicker, even though I set the form to use double-buffering. The culprit seems to be redrawing the background to refresh where the foreground images used to be; no flicker if I replace the background DrawImage with a simple Graphics.Clear. I think what I want to do is draw the background, and the foreground bitmap(s), in memory and then render it all. I used to do this with double-buffering, BitBlt, and .Refresh in VB6 but I haven't found the equivalent in VB2010. This must be a pretty common graphics requirement; what's the trick to it?
Dim Gfx As Graphics
Me.SetStyle(ControlStyles.AllPaintingInWmPaint Or ControlStyles.UserPaint Or ControlStyles.OptimizedDoubleBuffer, True)
Dim rectBrd As Rectangle 'use as clipping region for drawing
[Code].....
is there any way that i could link/bind multiple binding source to only one binding source navigator?
View 4 RepliesHow can I filter multiple clauses in a binding source. I've tried
Form4.CustomersBindingSource.Filter = "[Last Name] = '" & TextBox1.Text & "'" & "[First Name] = '" & TextBox2.Text & "'"
I'm using a SQL database and I want to bind five tables to one Binding Navigator.
View 3 Repliesa checkboxlist control on my page and each item relates to a boolean value column in a flat table on my sql server. I've worked out how to transpire checked listitems into the table ok, but I'm having problems auto populating the checkboxlist with the boolean (selected or not) columns.
View 5 RepliesI am very new to vb. I have to create a registration form based on the a complainant form and offender form. Complainant form fills out, take the complainant_ID and parse it to registration form to load. Now when the registration form loads, it has registration_Id and complainant_ID, fills out necessary info and add an offender from the offender form and pass back the offender_ID to the registration form..now on this registration form, we have registration_ID, complainant_ID, and offender_ID..complainant and offender can have more than one registration..
Table structures:
Complainant table(complaint_ID, last, first)
Offender table(offender_ID, last, first)
Registration table(registration_ID, complainant_ID, offender_ID, type, desc)
What I have done so far:
Using separate dataset for each form. Complainant/Offender/Registration form load and save fine. But I do not know how to bind these Ids together so they stay in sync.. What I mean, when I add new complainant, take the complainant_Id, parse it to registration to create a new registration for that particular complainant, and also add an offender to that newly created registration, and pass offender_ID back to registration form. I am using visual studio 5 and sql express..
I have SQLdb column elements from one table that are selected from another table. This is achieved through the use of binding a combobox to the selectable entries and applying that entries ID to the initiating table column When I add multiple combo boxes, for multiple columns, the data selected propagates across all the combo boxes I have. They all use the same binding source. It seems to me the only way out of this is to create a bunch of binding sources, essentially one for each control. I have tested this and it appears to work, but is there another, less cluttered way of ensuring that the comboboxes, while bound to the same binding source, are not bound to one another?
View 2 RepliesI have a winforms app access a database with 6 tables. Out of 6, I am showing 3 tables on three different tabs on my Form. However, I want to do it using a single binding navigator that will use / change the respective binding source dynamically, depending on the tab that is activated by the user. I have separate binding source for each of the three tables.
View 3 RepliesHow can I do this, this what I got so far.
Dim ClassID As Integer = 1
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Database
[code].....
.NET Bitmap class uses GDI+
I want to know how many Bitmaps I can create.
Will memory leak when create too many Bitmaps?
I'm trying to create a new bitmap from a filestream...I keep getting the error "parameter not valid" on the line[code]...
View 6 RepliesI'm experimenting with the various graphics, bitmap and image functions of vb.net 2010, with the aim of being able to create an image processing tutorial program for my Physics AS group. Currently, I'm trying to zoom in to an image so that individual pixels are clearly visible. The below code shows what I'm doing.
My problem is that the zoomed in image always comes out blurred; the individual square pixels are not visible. I presume this is because as the DrawImage method resizes the image, it re-samples the image in some way. Is there a way of resizing the image while retaining the pixels as in the original image, so that individual pixels are visible? I've tried several other methods, including drawing to a picturebox control and then resizing the picturebox with the size mode set to zoom or stretch... this results in the same blurred image.
[Code]...
I have a function that returns a bitmap meant to be used as background in a panel, and occasionally I'd have to call it to create a new background based on parameters
View 2 Repliesi want a way in which i can extract 2 bitmaps from winload.exe.mui file in vb.net 2008
View 6 RepliesHow can I convert a series of bitmap files to an AVI (or any other format of video)? Or any format of image file? Or any Bitmap object?
View 7 RepliesI need to know how to populate a listview with all of the images from my.settings, and I need it to show the image in the listview. How would I do this? I've never used listview because I never cared to learn until now.
View 2 Replieshow to draw an unknown amount of images to a form
the amount of images should be determined during runtime.
Bitmaps and Pictureboxes, memory usage off the chart!???????????
View 7 RepliesI am trying to create a multipage tiff from a series of bitmaps. The bitmaps are not saved I am creating them using graphics. The code goes something like this:
Dim info As ImageCodecInfo = Nothing
Dim ice As ImageCodecInfo
For Each ice In ImageCodecInfo.GetImageEncoders()
[code]....
The problem is I can see the first page, but no others. I have searched the forums, internet, etc., have worked on this for hours and am getting nowhere.
I'm trying to find the colors of pixels using GetPixel(x,y) with bitmaps.
I understand how to use it and it works.
When I use .ToString I get the string version of the color.
Now when I use .ToArgb I get a negative number and the colors are backwards?
16777215 should be white and 0 should be black.
This is an example of some results:
-16273900 is showing close to black and -32567 is showing close to white.
I've searched these forums, and found some GDI and C# links, but I really want to do some image processing in VB.NET.
how I would go about combining 2 bitmaps into one, sort of superimposed on top of eachother? I don't know what libraries are available in .NET.
Basically, I have a program which screenshots the form when the person clicks their mouse button. Afetr the click it will store the screenie in a bitmap.But the problem how would I store loads of picutres in different bitmaps if they for instance clicked 100 times without having to declare the bitmaps 100 times and seeing if each has a image and then checking thge next 1.
View 1 RepliesI am writing a VB 2008 Express Edition application which has multiple forms. All of the forms contain one or more PictureBox controls. All PictureBox controls have assigned bitmaps via Image property during development mode. So far, all the bitmaps displayed during runtime without a slightest problem. Now, suddenly, not a single new one (i.e. which I add from this moment on) would display bitmap during runtime. All the old ones (i.e. those which I have added up to that unspecified point in time when something went wrong) still display bitmaps fine as they did before. But any newly added PictureBox (or, come to that, any other control which can display bitmap.
I have tried also Label control) displays the bitmap loaded via Image property only during development mode. During runtime the PictureBox shows as empty. I tried to load the bitmap during runtime via command Image.FromFile and that works fine (but I don't want to use this approach in my program). If I create a completely new application, all PictureBox controls display the bitmaps just fine. I don't get any errors or warnings in VB editor. I reinstalled the whole VB 2008 Express Edition including SP1 and .NET 3.5 SP1 with no difference whatsoever (as would be expected as any new application works with PictureBox controls fine).
It seems difficult to find good information on working with bitmaps. Specifically I am looking for .NET info on getting tile graphics to the screen. What I know so far is this. I need a picturebox for the display. I need a second picture box for a back buffer and then I need a third picturebox for the tiles that I would copy to the back buffer which then gets flipped to the screen.I need this to be done with .net controls and classes or functions and etc. If anyone has good information on this, please let me know. I am using visual basic 2008 express edition.
View 2 Repliesbinding navigators, datagrid view, binding source are all sql database parts.Will these parts still work if you havent got sql on you pc and your not using an database file (.log and .mfd) and your not coding to them, im using MS Jet/Oledb to code to Excel.What not to put on an Employee evaluation: This employee has hit rock bottom and shows signs of starting to dig.
View 2 RepliesBinding Master Table to TextBox and DateTimePicker and Binding Details Tables to Datagridview then Add / Update / Delete in both
View 8 RepliesI use objectbinding to display client data in a datagridview. The datagridview also contains a counry-column allowing the user to choose the country of the client.Unfortunately, databinding of comboboxcolumn does not seem to work if an own business class is used. Using a simple collection instead works well.Copy the sample code into a new windows project and the programm runs fine. Then comment and uncomment the two lines with "XXX" and the code will fail. Why and does anybody know how to make the sample code work by using the business object class(variable named "newClientListVariable" in the sample)? [code]
View 3 RepliesI started programming in VBA, then graduated to VB6, and I am now using VB.NET 2008 Express.I have read, in the various posts, that I should keep Option Explicit and Option Strict both on, in order that I use correct VB.NET code and not VB6.I am trying to do that but am totally confused with the results of one of my programmes that was running perfectly with Option Strict off, but now advises:Option Strict On disallows late binding. To me it appears that I am using early binding, but to be honest I am not clear on the binding situation. I have checked through a number of google items, and a number of this Forum's items without seeing the light.[code]
View 8 Replies