Creating A Custom Media Library - Loading Images For Rendering?
Jul 22, 2010
i'm working on a project right now and I need to create a graphic library.The game I'm experimenting with is an RPG; this project is expected to contain many big graphic files to use and I would prefer not to load everything into memory at once, like I've done before with other smaller projects.So, does anyone have experience with libraries such as this one? Here's what I've came up with:
Have graphic library files and paths in an XML file Each entry in the XML file would be designated "PERMANENT" or "TEMPORARY", with perm. being that once loaded it stays in memory and won't be cleared (like menu-graphics)The library that the XML file loads into would have a CLEAR command, that clears out all non-PERMANENT graphics I have experience throwing everything into memory at startup, and with running the program running with the assumption that all necessary graphics are currently in memory.
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Apr 25, 2010
I am messing around with the WMPLib component provided by Windows Media Player 12 (wmp.dll) in VB.NET with .NET Framework 3.5 SP1.
I am trying to retrieve a media item from my media library based on its name (assuming there are no duplicate names). At the moment, I'm grabbing the entire media library, and looping through every media item, and quitting the loop when I've found the correct media item. This works well (except for when a media item with that name cannot be found), but I was hoping there was a more efficient way of doing this.
Here is my code so far:
Public Class WMPTest
Private myWMP As WMPLib.IWMPCore
Private myMediaCollection As WMPLib.IWMPMediaCollection
[Code]......
So what I really want is a way to optimize findTrack() to do its thing without looping through the entire media library (which could be huge).
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Aug 6, 2010
I'm working on my second project; a layered image displayer.
It works like this:
- The user adds a new "image layer"
- The user can set the texture, image, size, rotation and color
- This all can be done using a selection square and some dialogs
It all works fine, but I found that there is one thing still unclear to me:
- Can you render layers without totally starting over (refresh) on every change?
As example, I have 200 image layers. I change one image layer somewhere in between them, and the program has to refresh all those images. (1 - 200)
This takes awfully long.
Now I found a small solution; I gave all layers a "finalimage" so it can render a single layer. Next I used, in the program, a back, active and fore layer. This way the program only has to render 3 images when changing the "active" layer. When you select another layer, all 3 layers will refresh. (with all those 200 layers).
Here is the code to get an idea:
Dim OLDINDEX As Integer = -1
Dim BackLayer As New Bitmap(800, 600)
Dim ActiveLayer As New Bitmap(800, 600)
Dim FrontLayer As New Bitmap(800, 600)
Public CurrentIndex As Integer = -1
Public PerformGlobalUpdate As Boolean = False
[Code] .....
It all works fine, but the only problem now is that it takes ages to select a different layer.
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Feb 20, 2009
The source code for this task is here: copied the VB code to Break TIFF file with multiple pages to be displayed in a Picture Box. I did modify one line of code for testin¦
'Save the master bitmap
MasterBitmap.Save("C:UsersmyselfDesktopxx.tif", info, ep)
[code].....
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Jan 26, 2012
I made a program that plays several streams, and radio stations from its online sources. Some streams WMP can play, and some only quicktime can play. Currently, I am using the dll libraries for wmp and quicktime and compiling them with my program. it works but it's very laggy and it causes problems in other computers.So, my question, Do you guys know a library to play most media types? so I would have only one dll file.
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Apr 20, 2012
is there a way to capture or to save the story board animation to media library in windows mobile? Currently i am working with an animation which changes the image for every second. How can i save this into a video format??
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Nov 18, 2009
I have VB.net progam that is sucsefully accessing playlist from the media player lib but I can not figure out how to get list of photos that has a perticular keyword like the display in MP under photos if you click keyword?
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Mar 26, 2010
I know Media Handler Pro can convert almost any video type into another (e.g. flv to avi). However, my situation is slightly different. Would it be possible to use Media Handler to encode images into a video. So basically, I have a bit of code in vb.net that captures images in a sequence and stores them in a file. This code only creates bitmaps and saves them though. How would I go about encoding the images into a video file format? In this case I would prefer not to use windows media encoder as that caused me a lot of problems. Unless someone has a fully working tutorial on how to use windows media encoder in .net framework 3.0 (or above) then its not an option.
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Sep 10, 2010
how can i get custom menu bar like this (office 2010) example:I need to have custom background and custom hover images. I work in Visual Basic 2010?
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May 4, 2011
I've created a solution that contains a single class library project and two web applications. My main problems are the connection strings. These are held/declared in the web projects and I'm having to pass them into the class library every time I perform any kind of data access. I sort of understand why I should do this so I'm going with it for the moment.This has now led me to a problem/question with lazy loading. I'm using lazy loading for the following property:
Public Property KeyRelationshipManager() As Employee
Get
If _keyRelationshipManager Is Nothing Then
_keyRelationshipManager = Employee.GetEmployee(_keyRelationshipManagerStaffNumber)
[code].....
I need to pass in the connection string to that function.This means I would need to pass the connection string in to the property every time I use it so I could pass it into the function.Is this correct? It doesn't 'feel' right to me because I'm going to have to adjust a huge number of functions and property and pass through the connections string.
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Jul 24, 2010
if there is a way to customize my media player, like custom buttons, etc, I would like to make a box displaying the visualizations and a custom library control...
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Mar 13, 2009
PicBox(0, 0).Image = My.Resources.ship1
PicBox(0, 1).Image = My.Resources.ship2
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Jan 16, 2012
As you see the code given below is not very useful. Is it possible to shorten the code. Mousewheel back and forward give the same result (next image). Keydown cannot be configured.
Private Sub Images_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
count += 1
If count + 1 > ImageList1.Images.Count Then
[Code] .....
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Nov 21, 2010
I have about 100 PNG images stored in a Resource. Sometimes I need to have the same images in an ImageList, but I do not want to store the images twice in my application, so I add the images from the Resource to the ImageList during runtime when I need them.
Is there an easier way to do this than having 100 lines of code, like the small example below?
imgItems.Images.Add("A", My.Resources.A)
imgItems.Images.Add("B", My.Resources.B)
imgItems.Images.Add("C", My.Resources.C)
imgItems.Images.Add("D", My.Resources.D)
'etc
'etc
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Jan 31, 2011
I am using the following piece of code to load images as thumbnails to a FlowLayoutPanel control. Unfortunately i get an OutOfMemory exception.As you already guess the memory leak is found at line
Pedit.Image = System.Drawing.Image.FromStream(fs)
So how could i optimize the following code?
Private Sub LoadImagesCommon(ByVal FlowPanel As FlowLayoutPanel, ByVal fi As FileInfo)
Pedit = New DevExpress.XtraEditors.PictureEdit
Pedit.Width = txtIconsWidth.EditValue
[code]....
Update: The problem occurs while loading a number of images (3264x2448px at 300dpi - each image is about 3Mb's)
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Mar 1, 2009
Is there any efficient way to load all of the images that my program will use upon start-up such that when I load those images into pictureboxes during runtime regardless of what form I may be using, the images will load faster?Does that make sense?I've read about ImageLists, but do they actually load the images or is it just a way to manage image files?
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Feb 8, 2009
I want to load images into a picturebox, save them into a database and display them again in the picturebox. This is the code I'm actually having problem with:
Private Connection As String = _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:UsersclientDocumentsVisual Studio 2008ProjectsSavingsLoansCalc.mdb"
rivate Sub UploadButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles UploadButton.Click
[Code] .....
I'm getting this error message:
"Type 'Connection' is not declared"
On this line:
oConn = New OleDb.OleDbConnection( _
New Connection().getConnectionString)
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May 27, 2011
I am currently new to visual basic and I am using Microsoft Visual Basic 2010. I am trying to create a small game in which i want to use 8 images. These images are imported in my resources under images as _0.gif _2.gif up to _7.gif. I could write code for each of the imageboxes individually but i prefer doing it in an array as shown below. As you can see I use the variable "i" to run a for, next loop.
picbox(i).Image =
My.Resources._1
So that not every time it loads the image. _1.gif but it loads the images _0.gif through _7.gif, based on the "i" variable.
For
i As
Integer
= 0 To
7
picbox(i) =
[Code] .....
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Jan 7, 2011
I have a 4 pictureboxes for a database I made but having a problem with loading images in to the picturebox. On my form I have a picturebox, 1 button, 1 textbox, and 1 openfiledialog.
My button click event code
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
OpenFileDialog1.ShowDialog()
TextBox1.Text = OpenFileDialog1.FileName
Pic1PictureBox.Image = Image.FromFile(TextBox1.Text)
End Sub
I can add pics but if I don't select any image (just close the dialogbox) I get an error and not sure what to do ..or what to add. Is there any code to tell it to just close..
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Mar 3, 2010
It's been a while since I last posted something, but this attracted my attention. Since many of my programs share the same type of code, I decided to dump it all in a class library for other programs to use.
Now I have a problem, Windows Forms in a class library can't be displayed. There is no "Show(Dialog)" command, only some for event handling. All properties are gone as well. The only way I managed to display a form is by making it as a new variable: 'Dim f as windows.forms.form
But this won't work because of the enormous amount of handlers added to the original.
How can I show my (TextureBrowse in my case) Dialog so other programs can use it?
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May 26, 2009
mage from the open file dialog in a picturebox the image displays correctly..
Private
Sub
ListBox1_SelectedIndexChanged(ByVal
[code].....
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Feb 8, 2012
I'm trying to load this image file on a PictureBox but I get an "OutOfMemoryException was unhandled" error.
How do I allocate more memory for this? Or maybe use another container? My project's main feature is loading maps, unfortunately my boss wants to load the whole map and won't accept sliced version of the map.
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Sep 21, 2010
I have a custom control's library. Now there's a control which looks like a panel, and when it opens up I want to animate its vertical growing like this:
For h As Single = 0 To finalHeight Step 0.5
Me.Height = CInt(h)
' HERE I WANT TO CALL DoEvents'
Next
Me.Height = finalHeight
If I don't call DoEvents in the loop then the animation is not shown, I only get the final height without a visual feedback along the way. I can call DoEvents from inside my main WinForm project, but can't inside a library. How can I do that, without drowning into the deep threads waters?
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Oct 15, 2008
I've created a custom class that I've grown rather dependent on in my coding. I've encapsulated it as it's own "Solution" and use a reference to the class module within the solution on most of my new projects, and that all works fine. It seems slightly clunky to me that my encapsulated class module is packaged with solution-related directories and so forth. For me, this seems to make management and maintenance of these little class modules difficult (renaming them for instance). So now, a few questions:
When you recognize you have a useful class embedded within a solution:
1) What's your method for encapsulation? (is there a template you like?)
2) How do you organize/arrange your code libraries?
3) When, if ever, might you consider using that "Code Snippets Manager" thing in the IDE?
I'm struggling a bit trying to understanding how Visual Studio wraps-up everything in what appears to be a "Solution" umbrella. There doesn't seem to be a lot of write-ups on how to go about organizing your code libraries to work well within this Solution/Project Visual Studio framework.
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May 9, 2012
I'm working on a windows form project where the first form displays a menu list made up of custom textbox controls. When the user navigates to a textbox and presses enter the underlying code runs another form and hides the menu form. The form to run and the navigations sequence is controlled by properties I added to the custom textbox. I have done the same with a custom button. Both custom control inherit from their respective Windows.forms controls.
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Oct 21, 2009
So I've made this control that inherits from the treeview control and basically loads objects from active directory into a treeview (url...).All working fine, but as this is the first custom control I have made that I have intended for other people to use, I'm not quite sure how I should approach error handling.I mean, obviously I shouldnt do something like show any exceptions in a messagebox because that might not be what the person that is using the control wants to happen. So do I just write out exception messages to the debug window? Do I swallow exceptions (guessing not)? Do I just totally ignore them so that they are thrown in the user's project?
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Jul 14, 2010
How to receive a web page without loading images for lower usage of bandwith? I prefer to not using webbrowser component.
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Jul 3, 2009
I am having a problem, which I did not have until recenty, adding personal macro buttons to the Quick Access Toolbar using Excel's Customize function. The macros, which I know are, enabled and executable, cannot be assigned to new buttons on the QAT. Actually, I can add macro buttons to a new workbook fine, but when I close, reopen the workbook, and try to add another personal macro button, they all disappear.
I set 'Show Add-in User Interface Errors' in the Advanced tab of Excel Options and get this error when I open a workbook with personal macro buttons added to the QAT[code]...
I deleted the macros and manually keyed some simple command (msgbox 1) into a new macro and still got this error message.
I set 'Show Add-In User Interface Errors' on a remote server (where I do not have this problem) and I do not get this error message when loading workbooks with customized QAT.
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Sep 5, 2010
I'm currently blocking all the images from loading in the web browser control by using the registry key. I would like to find a way were I could allow images from some sites to be shown.
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Dec 30, 2011
i have a simple photo viewer application where i want the user to click a "load sequence" button and then i want something like a folderbroswerdialog to appear then the user can pick a folder with images in it then the images get loaded into the picturebox and the user can click a "forward" button to go to the next image in the sequence and a "backward" button to go to the previous image in the sequence, it's kinda like windows 7 photo viewer.
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