Multithreading - Render Text As Icons And Use These For Notification
Nov 4, 2011
I've got a timer which ticks every half a second. It calls a background process which renders text as icons and uses them for notification icons.
Public Shared DISCUS(9) As NotifyIcon
Private Sub BackgroundProcess2_DoWork() Handles BackgroundProcess2.DoWork
Try
For counter As Integer = 0 To My.Computer.FileSystem.Drives.Count - 1
Dim FontColor As Color
[Code] .....
Now for some reason, after a few minutes of the application being active, I get a JIT pop-up that doesn't render any text or buttons. Clicking on it causes the JIT debugger to crash, and I get the Windows "{App} has stopped responding." with error code CLR20R3. I'm not sure what this is all about, but I can provide any other details if needed. I've got everything nested in Try/Catch statements, all with code to write to a crash log but nothing gets written and I still get that error message.
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May 13, 2011
Context: I'm working with a relatively simple winforms application, written in VB.NET on the .NET 3.5 framework in Visual Studio 2010. Issue: The FormLoad event creates two threads when the program is opened. One handles automatic update checking and the other performs a time consuming task syncing files with the internet. These threads are initialized as follows:
[Code]....
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Jan 12, 2010
I'm trying to write a very basic program in VS 2008 (VB.NET 2.0) that will help me to quickly set up new servers. One of the things I want the program to do is hide the "Volume" and "Network" system icons. I cannot find where that setting is or a way to programmically change it.
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Apr 5, 2011
I'm working on a website that creates pdfs dynamically.I've been playing around with two different pdf controls- wpcubed and abcpdf, and was surprised to see that they both appear to render text differently.
wpCubed:
abcpdf:
They are both using arial 25pt bold, so I was expecting them to look identical. Can anyone explain why they don't. Here are the full files: wpCubed , abcpdf
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Oct 6, 2010
I'm using some code to enable me to render rotated text with the TextRenderer.DrawText method. (By default, DrawText can only copy a straight forward x and y transform from a graphics object).
The code (C#) is from: connect.microsoft.com. See below for a VB conversion.The code takes a graphics object, creates a device context and copies the transform matrix from the graphics object. It works, but I'd like, also, to set the TextRenderingHint, so I tried:
<DllImport("gdiplus.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)> _
Public Shared Function GdipSetTextRenderingHint(ByVal graphics As HandleRef, ByVal textRenderingHint As System.Drawing.Text.TextRenderingHint) As Integer End Function And then after the SetClip statement, I place: GdipSetTextRenderingHint(hDC, someHint) This gives me a memory access violation error, so I think I should be using something other than hDC as the argument.
I can get it to work by creating the device context from the original graphics object, and then creating another graphics object from the device context. I then set the hint on the new graphics object. This seems a bit convoluted so I was wondering if it was possible through interop.
[Code]...
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Dec 18, 2009
I need to constantly display large amounts of colored text in WPF or Silverlight, and I need the user to percieve it as showing up instantly.
Currently I'm doing this using a canvas and textblocks, one textblock per 80-character line, with multiple runs to a textblock to handle the different colors. There can often be 20+ runs to a line.
In a 45x80 grid of text, this gets a framerate of about 12 in Silverlight, which is sluggish. Oddly enough, it's even slower in WPF... I can only speculate that this has something to do with my dev machine's lousy video card. Maybe it's trying to hardware accelerate and actually slowing down because of it?
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Mar 6, 2009
I'd like to make a custom control that allows the end user to format the text, similar to an HTML or RichText control. The idea is that it will be static like a label, but allow end user to specify certain tags around words to make them bold, italic, underline, hyperlink, etc, either at design time or runtime. My question more specifically is how to best approach this. My intention is to use GDI+ methods, like DrawString, etc. But my concern is the inefficiency of having to parse the text each Paint cycle to determine which tags are present in order to use the correct font style, etc. I'm not really asking HOW to do this, but more of a hint on which architectural approach to take on this. Maybe there is already some examples of this out there?
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Jun 8, 2006
How do you accept dragged text to a notifyicon control? I am aware that the notifyicon control supplied with .net does not have an AllowDrop property nor does it have dragenter or dragdrop events. I'm looking for a way to somehow do this without reinventing the control.
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Sep 20, 2010
I am developing an application in VB.NET 2008, in which I try to get Desktop Icons Text Width & Text Height.So far I have obtained all desktop icons positions, but I really can't figure by myself how to get Desktop Icons Text Width & Text Height.
[Code]...
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Sep 20, 2010
I am developing an application in VB.NET 2008, in which I try to get Desktop Icons Text Width & Text Height. So far I have obtained all desktop icons positions, but I really can't figure by myself how to get Desktop Icons Text Width & Text Height. Here is the VB.NET 2008 code that I use:
[Code]...
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Sep 20, 2010
I am developing an application in VB.NET 2008, in which I try to get Desktop Icons Text Width & Text Height.So far I have obtained all desktop icons positions, but I really can't figure by myself how to get Desktop Icons Text Width & Text Height
Imports System.Runtime.InteropServices
Module mdlDesktopIcons
Private Const STANDARD_RIGHTS_REQUIRED As Integer = &HF0000
[code].....
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Dec 23, 2010
How do I can put a text (shift the icon image) on notification icon alredy put it on system tray (near clock place) using Visual Basic 2010?
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Sep 20, 2010
I am developing an application in VB.NET 2008, in which I try to get Desktop Icons Text Width & Text Height.
So far I have obtained all desktop icons positions, but I really can't figure by myself how to get Desktop Icons Text Width & Text Height.
Here is the VB.NET 2008 code that I use:
Imports System.Runtime.InteropServices
Module mdlDesktopIcons
Private Const STANDARD_RIGHTS_REQUIRED As Integer = &HF0000
[Code]....
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Sep 20, 2010
I am developing an application in VB.NET 2008, in which I try to get Desktop Icons Text Width & Text Height.
So far I have obtained all desktop icons positions, but I really can't figure by myself how to get Desktop Icons Text Width & Text Height.[code]....
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Feb 13, 2011
TortoiseSVN and Dropbox both have Windows shell extensions that make file icons within Windows Explorer show a small icon beside the main one, showing the file's status - has it been synced, etc How can I make my application show icons beside files like that using the Windows API? Or is there some file attribute to do that?
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Nov 22, 2011
how to use multithreading. Still don't know what i am doing wrong in the code below i don't get any errors it just doesn't update the rich text box (frmArmaghRecords2.rtbOpenArmaghFile3).
[Code]...
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Mar 20, 2010
I would like to make a image in the form representing the icon and a label below it to represent name but is there a easy way to do this.
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Aug 12, 2011
I have a web browser integrated into a project. the web site uses jquery and runs best with ie9. The WebBrowser control in my vb.net form runs the web page as ie6 and none of the jquery works. Is there a way to tell the control to render with ie9?
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Jun 20, 2012
I'm trying to render a custom section within a form in VB.NET MVC3? the section is in the master layout, and is defaulted - but id like to create a custom one when in a particular view
[Code]...
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Apr 23, 2010
We have a report that has to be called from an ASP.NET application, it could be a simple button. Through the code-behind, I gotta pass in a paramater, render the report, and don't save it anywhere, just open it to the user, as a .pdf file so he could save or print it.
EDIT:Now I've got the report done, I just need to know the best aproach to call it.It can't be done directly from an URL because that allows the user to save or close the pdf file, which is not what I want.
I'm starting to think that the best aproach to achieve this would be the following:I render the PDF programatically, and create the .PDF file in a temporary folder inside my app structure, then start a new thread to open the file, and wait for the user to close it, when he does, I delete the file and the thread is dead.
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Aug 30, 2011
I want to render a report directly to pdf. I have an objectdatasource with 2 parameters. I obtain these parameters from a hiddenfield on the webform and from the datakeyname on a gridview. The report works when I load it in report viewer without rendering to pdf. When I place the code to render the report as pdf the parameters dont load i.e. the report renders as pdf but there are no details on the report. My code is below,. I placed the code in gridview_selectedindexchanged:
[Code]...
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Oct 9, 2010
I render a complex shape in OpenGL which requires a lot of calculations, is there anyway to export that to a state like a model that can be opened again later given you wont edit it again?
I can't create them outside the program (with something like Blender) since the shape is computed when the program starts. The render then gets translated, rotated, drawn over, etc. Note, that I don't need to edit the shape though, but I do want it in a 3D state so saving an image isn't an option.
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Nov 25, 2011
I'm trying to make a toolstrip similar to that of Internet Explorer (as shown below). Does anyone know how to create a custom renderer to do this?
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Nov 12, 2011
Dim formTest1 As FormTest = New FormTest()
formTest1.Show()
Dim htmlDocument As mshtml.IHTMLDocument2 = DirectCast(WebBrowser1.Document.DomDocument, mshtml.IHTMLDocument2)
If htmlDocument IsNot Nothing Then
[Code]...
I want to copy the contents of a WebBrowser to a Bitmap. The above code seems to reproduce a part of the image but not all of it.
1) I'm sure I don't understand this completely so my comments probably have terminology that is not completely correct. I would really appreciate it if you could edit them and maybe add a little to them.
2) And, of course I'd like to know how to improve the code.
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Jan 14, 2012
I currently use GDI+ to render my images but is too slow for what my software is supposed to do. I tried to use DirectX but it too hard to implement. Is there any library that is best of bought worlds? Fast and easy to use?
[Code]....
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Feb 4, 2012
I have a project with a canvas that the user can zoom and pan using the mouse. The origin is marked with a blue cross running through the canvas. As the user zooms in the line width of the markers is reduced to keep the them about 1 pixel wide on screen. However, after zooming in about 10x the origin lines abruptly disappear. It seems like the rendering engine is deciding that the line is too small to be displayed before applying the scaling transform.
What is strange is that when I do the same operation to a rectangle instead of a line I get the expected behavior (see the ScaleBox rectangle object in the code below). Any ideas on what is causing the problem and how to fix it would be welcome.
Here is the relevant XAML:
<Canvas x:Name="MouseCapture" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="WhiteSmoke" >
<Canvas x:Name="ZoomPan">
<Canvas.RenderTransform >
[code]....
Here is a screenshot as 10x Zoom. The origin lines have disappeared abruptly, but the black box still shows up as expected. (Note that only one side of the black box is visible because the rest is outside the visible region because of the zoom.)
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Oct 11, 2011
rticularly when creating jQuery buttons with no text and just icons) as a result of this.Secondly I am attempting to create my own custom button output by overriding the Render() event and am having a bit of difficulty trying to understand how to go about changing the output that is provided by this event.If I look at the HtmlTextWriter that is provided as the parameter to the Render() event I can see it contains a protected property TagKey = Input {47}, is it possible to simply modify this property somehow and change it to a Button or do I need to create a new instance of the HtmlTextWriter and populate it all from the start? If so, could anyone provide some guidance as to how this would typically be done and if there are any special considerations I need to make to ensure that my derived button class is functionally equivalent to the original (excluding the html)?
<Assembly: TagPrefix("MyCompany", "MyCustomButton")>
Public Class MyButton
Inherits Button
[code].....
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Feb 14, 2012
I just can't get it to work. I have an array of bytes, read from a png file. I'm trying to write a (very) simple HttpHandler to render the image:
context.Response.AddHeader("Content-Type", "image/png")
context.Response.BinaryWrite(bytes)
context.Response.End()
[Code].....
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Feb 15, 2009
I'm filling a DtatagridView as usual, using a datatable as datasource and I have the SelectionMode = FullRowSelect, but since I need to color each row according to its result, I have set the property DefaultCellStyle - SelectionBackColor = Transparent, well, I'm not going to complaint about the font looks a little bit distorted, but about the selectedrow does not render correctly, If I minimize the program and then maximize it, the selectedrow appears with the image of the desktop's background.
[Code]....
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Jul 12, 2010
I am using directwrite and was just wondering how to render a font (font face file) that is loaded in the project resource (probably through a stream).
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