I tried using LockBits to blur images, since I heard it was faster, and there's no error, but there's no blur either. It doesn't do anything. The commented-out code is the code I had before using LockBits, and it works.
vb.net
Private Sub BlurImage(ByVal img As Bitmap, Optional ByVal radius As Integer = 3, Optional ByVal blur_bounds As Object = Nothing)
Dim bb As Rectangle
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I have this code to blur an image (a rewritten one from my Vista Forms project):
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And it works fine for blurring a picture, but when I pass it a rectangle (and I know the rectangle is correct), it ends up stretched and very thin. I've attached a screen-shot of it "working". The red rectangle is the rectangle I pass, and the warped sort-of red area is where it seems to be blurring.
I've made an Aero-style form header (see signature) and I wanted to speed it up, so I used LockBits, and it had a different effect. These two methods should do the same thing, right? Well, it doesn't. Image 1 is before LockBits, Image 2 is after. Using LockBits gives a streaking effect that I don't like.[code]
View 5 RepliesWhen I converted small application from C# to VB, a little problem appeared. Method, which used to take 110-120ms, started to work about 500ms (and it's very big difference for this kind of application). So, I've made detailed comparison, and here is the result:
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In duplicated code using Lockbits in VB to obtain the address of Bitmap.Scan0, the first is OK, in all applications, but the second NEVER is. What is the explanation please? Surely both StartAddrA and StartAddrB should be valid pointers to Bitmap.Scan0 for calls to valid, functional ASM code in the functional DLL. The error is, it seems, in the VB Lockbits process. Using VS2010 Beta 2 and XP.
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My blurring results have been somewhat strange lately, so I tried this simple test to see what the ARGB order is when using LockBits. When I run this
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim bmp As New Bitmap(1, 1)
Using g As Graphics = Graphics.FromImage(bmp)
g.FillRectangle(New SolidBrush(Color.FromArgb(&H11, &H22, &H33, &H44)), New Rectangle(0, 0, 1, 1))
End Using
[Code]..
Which would be better to use if I want to find one pixel?
View 2 RepliesI want to make my mainform become blur when a new form is showed.I dont want use opacity property because it can't make mainform darker.I mean opacity only change opacity of form.
View 3 Repliesthe goofiest bloor function that exists in vb.net simillar to saying hello world!No blur hardness no sharp edges or any other settings everything should be default the easiest way to do it.
View 4 RepliesI have a login form and a Main Menu Form. I want that everytime I click Login (assuming that I'm in Main Menu Form) Main Menu Form will become blur then a small form for Login will pop up.
View 5 RepliesHow can I make background window blur with code.just like when you open regedit in Vista or seven all background changes to black except the prompt window.I want to mimic this behavior but instead of just color black I want it to be the image of the background in blur view. How can I do this in VB 2008?
View 1 RepliesI do remember what I did but text in code windows became very blur.Another screens such as option, solution explorer are still very clear.How to fix it?I tried to reset to reset all setting but no luck.
View 18 RepliesHow to make a picture glow & blur even if the picture contains transparent color?
View 6 RepliesI'm using PrintForm which comes with PowerPack to print a form with a couple of Labels into it.But the letters appear a little blur and not clear at all, bad quality, I tried by increasing the size of the labels but the result was the same.Under the PrintForm parameters I only found one that could be relevant, the papersize but that doesn't helped too.
View 5 RepliesI should mention I am developing this in SharpDevelop, so if it's a bug with this software then I'll take this up with them.
So I am having issues with trying to get a right-mouse click to work. I have a grid of 30 buttons and I need to right-click to enable a button and left-click disable. I have surfed all over the internet trying to find the answer and the closest I have come to it is it detecting a left-click, but never right.
Sub Button1Click(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Button1.Click
DataGridView1.CurrentCell = datagridview1.Rows(0).Cells(0)
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As you can understand, I am having a lot of frustration with this. It just seems that I can't get it to work. I've scoured the internet looking for a solution without avail.
I'm trying to compress a file in .NET, but having some trouble. The zip file is created, but it's only 1KB and no files are within the zip file. Basically, it's not working for some reason and I'm not sure why.
Public Sub CompressFile(ByVal fileName As String)
Dim strOutput As Stream = File.Create("zippedFile.zip")
Try
Using (strOutput)
Dim strInput As Stream = File.OpenRead(fileName)
Using (strInput)
[Code] .....
I have a folder named "Root" in my d: drive.The "Root" folder contains two folders namely "Child1" and "Child2".The "Child1" again contains a folder named "Sub-Child1".The "Child2" again contains a folder named "Sub-Child1".I want to do a code in such a way that i can show the folder names in a Treeview.
View 8 Replieshow to operate onthe excel in vb.net......such as Create an Excel 2003 file in VB.NET 2005,Open and Edit Cells in an Excel 2003 file in VB.NET,Format Excel 2003 Page in VB.NET ,How to export from database to excel,How to export from DataGridView to excel,etc.i know the structure a file excel.It contains 3 main component.
1. Application which can modify and operate cells .
2. Work book , is child of Application and contains worksheet.
3. worksheet is child of Work book and contain columns and rows.
I have a picturebox on the form that has the KeyTip property assigned. If I hit the corresponding key, nothing happens. It seems to only work with controls other than the PictureBox.I have set KeyPreview to True and added this
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I'm having an issue with rasing an event. In my application I have a form and within that form I create an instance of a class (clsUsage). Within clsUsage I create an instance of clsUser which does several checks form permissions and other things. What I want is for clsUser to send status updates to clsUsage. ClsUser will be a dll but for now I've got it as a separate project in my solution. The RaiseEvent in clsUser seems to execute but the proc in clsUser that handles the event does not execute. I'm wondering if this is threading issue.
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I have a script for uninstallation which I use to uninstall a developed application. For some reason I am getting the following message and the uninstallation is not working. The message is attached.The script for the uninstallation is follows:
Dim shell, systempath
set shell = WScript.CreateObject( "WScript.Shell" )
systempath = shell.ExpandEnvironmentStrings("%SystemRoot%")
[code].....
I am running Windows Vista Ultimate. I have a copy of Visual Studios 2005. The toolbar is not working. I tried all of these and none of these fixed the toolbar:
-Show all (greyed out)
-Reset Toolbar
-delete C:UsersUsernameAppDataLocalMicrosoftVisualStudio8.0*.tbd worked one time then it did not.
I've updated my settings via:
My.Settings.SomeString = "new text"
then I call
My.Settings.Save()
When I check the .config file, the entry under
<userSettings>
<BE.IS.My.MySettings>
<setting name="SomeString" serializeAs="String">
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... the value remained the same, unchanged.1 thing though, my app is started via Sub Main() in module file, instead of "Enable application framework". Does this affect the saving of Settings file?
I have created a class module with this
Imports System.Data
Imports System.Data.OleDb
Public Class DefaultReport_New
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Im having a very strange problem.. I just copied the source code from one working application to this new application. It was working fine over there but not over here in new application. Neither it was showing any error nor updating the data. Below is the source code (method) that im using ..
public static void AppendViolations(string dsPath, DataTable dtSource, string PartitionID)
{
string ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=" + dsPath;
string SqlStatement = "select * from IncaViolations";
[code]....
I have some code written by another developer(no, really). The datagridview has the AllowUserToResizeColumns property set to true, but at runtime the grid will not allow column resizing. I've checked the code to see if the property is being set in code and I can't find anything. Is there some other grid property that, if set to a certain value, will disable column resizing?
View 2 RepliesI am trying to update my DGV with the following code. i have generated SQL update command in the tableadapter. but still the changes are not affecting the DB.
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I have a table in my database. I have an import routine which reads rows from and XML file. It first loops through my existing table to see if the row exists using a date and store code column as a unique id. It all works fine until this senario occurs.First file is read in and a new row is added for 01/03/2011, store code 100. The second file is read in which also has a row with 01/03/2011, store code 100. But when I loop through it does not find the row I just added so it adds it again.The only solution I can think of is to re-populate the local table everytime I add a new row but this will have a massive amount of over heads.If I add a row to an existing dataset surely if I loop through that dataset I should come across it.
View 2 RepliesI have a file called test.dat and for my OpenFileDialog I have:When the dialog opens, it looks correct, but when I choose DAT Files (*.dat), test.dat isn't shown.
View 5 RepliesProgram written and tested on XP x86 and then attempted to run it on windows 7 x86, but it just gives me the error '***** has stopped working'.I have checked it is being built for the correct platform (x86) and Win 7 has .Net framework 4 installed so i'm at a loss as to why it won't run. Some programs i've written work fine, some just crash.[code]
View 3 Replies