.NET (Core and Framework)

Re: Write FLV video with bitmap images programmatically

20-Sep-09 19:07

Hi,

How can I write a FLV video using bitmap images programmatically?
Earlier I was using .AVI format for this thing but the problem with this format is with its size. ALternatively, If someone can tell me how to compress the file size of .AVI video>

Simon P Stevens21-Sep-09 0:40

Simon P Stevens

21-Sep-09 0:40

FFMpeg[^] and MEncoder[^] both do stuff like this.

Simon

Re: Write FLV video with bitmap images programmatically

Raj Jayaswal22-Sep-09 5:17

How to make a uninstaller for a .net windows application

22-Sep-09 5:17

hi,
thanks for the reply.

I tried using FFMPEG but there was no response. I am using following code. Please see that the my image which is passed as srcURL is generated dynamically.

Private Sub GenerateVideo(ByVal srcURL As String)
     Dim ffmpegURL As String = "ffmpeg.exe"
     Dim directoryInfo As New IO.DirectoryInfo(Path.GetDirectoryName(Application.StartupPath & "\ffmpeg.exe"))
     Dim startInfo As New ProcessStartInfo()
     startInfo.FileName = "ffmpeg.exe"


     startInfo.Arguments = "-r 10 -b 1800 -i " + srcURL + " c:\new.mp4 "
     ' -i = input file -f = file format -vframe = video frame -s = size -ss = seek to frame
     startInfo.WorkingDirectory = directoryInfo.FullName
     startInfo.UseShellExecute = True
     startInfo.RedirectStandardOutput = False
     startInfo.RedirectStandardInput = False
     startInfo.RedirectStandardError = False
     startInfo.WindowStyle = ProcessWindowStyle.Hidden
     Using process As New Process()
         process.StartInfo = startInfo
         Try
             process.Start()
         Catch ex As Exception
             MsgBox(ex.Message.ToString)
         End Try
         process.WaitForExit()
     End Using
 End Sub

Please what is going wrong here.

Raj Jayaswal20-Sep-09 19:02

AutoScroll Form and height ...

20-Sep-09 19:02

Hi,

I need to make a uninstaller for my windows application.
Currently I am using a .bat file with code Msiexec /x {9807DCD3-B46D-46AB-AE6B-8ADC442DDA53} in it.
The problem within this .bat file is that anyone can open it up and while opening it up a command window opens with it which looks very bad.
Does anyone has any solution for this?
Any help would be appreciated.

devboycpp19-Sep-09 9:00

devboycpp

19-Sep-09 9:00

In my windows app I want a form with AutoScroll property set to true so that I can put more than the size of the form into it. But my problem is that I can not set the height of the form in Visual Studio's designer to more than the current resolution of the display. Is there any solution for that ?

Re: AutoScroll Form and height ...

Dave Kreskowiak19-Sep-09 10:59

Dave Kreskowiak

19-Sep-09 10:59

You can't directly get around it. The size of the form is going to be limited to the bounds of the screen on your dev machine.

But, there is nothing stopping you from putting a Panel control, or some other container control on the form, and making it larger than the form it's sitting on, then dropping your controls in the Panel.

Personally, if you're making a form this big, I think it's bad idea.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: AutoScroll Form and height ...

devboycpp19-Sep-09 21:34

devboycpp

19-Sep-09 21:34

Dave Kreskowiak wrote:
Personally, if you're making a form this big, I think it's bad idea.

Why is it a bad idea ? The form is a paper-like form that is 2 A4-sized pages. According to AutoScroll property of the form, I think It good to place all controls on the form.

What is your suggestion ?

Re: AutoScroll Form and height ...

Dave Kreskowiak20-Sep-09 2:05

Dave Kreskowiak

20-Sep-09 2:05

Because uses don't like to scroll around to fill in pieces of a form. Break it up into smaller sections by relevance and have each hosted either on a tab page or a seperate form, depending on specs.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Exceptions while loading project in VB.Net??

GuillermoOso18-Sep-09 11:57

GuillermoOso

18-Sep-09 11:57

Hi,
I have the following code in the module of my DLL

      Private m_objAppConfig As clsAppConfig = Nothing

      Public Property objAppConfig() As clsAppConfig
            Get
                  If m_objAppConfig Is Nothing Then
                        If False Then 'Something related to the load of the program in VB.Net
                              Return Nothing
                        Else
                              Throw New ExceptionImproperMethodCall("The configuration was not previously loaded")
                        End If
                  End If
                  Return m_objAppConfig
            End Get
            Set(ByVal value As clsAppConfig)
                  m_objAppConfig = value
            End Set
      End Property

It works OK while running, but when I open the project in VB.Net it throws the ExceptionImproperMethodCall several times.

Have you ever seen this?

Thanks

Luc Pattyn18-Sep-09 12:50

Luc Pattyn

18-Sep-09 12:50

Hi,

the exception you get is right there, it gets thrown by the get part of the property (Throw New ExceptionImproperMethodCall("The configuration was not previously loaded")) as long as no value has been set. So some code must be using the getter, maybe a constructor somewhere.

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

GuillermoOso18-Sep-09 12:57

GuillermoOso

18-Sep-09 12:57

It seems I'm not clear.
I've put the exception to avoid any use of the programs using the library in a way that I don't want. The library is used for at least one colleague and, of course, several users.
And it works. The compiled programs run perfectly.
Is when I load the source with the VS 2008 that I get the messages. Before actually running the application.
Thanks again

Luc Pattyn18-Sep-09 13:03

Luc Pattyn

18-Sep-09 13:03

Visual Studio does execute parts of an app while developing, i.e. without actually running the app. That is how the Designer is capable of showing User Controls for instance. I'm not sure which parts execute, at least they would include all parameterless constructors for GUI Controls and Components. So check those for reading the throwing getter.

If you can locate the getter being called but find it hard to prevent it, there is a DesignMode property that will help you.

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

GuillermoOso18-Sep-09 17:12

GuillermoOso

18-Sep-09 17:12

Thanks, Luc
That's what I suspected.
I still couldn't find the places where is called, provided that the F5 (start debugging) goes thru the calls in the right moments, where the object has already been instantiated. The only moment where I get the exception is when I open the project. Therefore, even testing is slow, because any idea to test implies closing and opening the project.
The DesignMode works for components, that inherit from Control, do not apply for these objects, that are not controls.

Regards,

Guillermo

adding Launch conditions

Raj Jayaswal18-Sep-09 8:07

18-Sep-09 8:07

Hi,

I am preparing a setup for a project say A and in order to run that A properly another installer say B has to be installed on target machine.
How can I prepare a setup project for A to check whether B has been installed prior or not, and if not quit the installation and install B first.

Eddy Vluggen18-Sep-09 10:04

Re: adding Launch conditions [modified]

18-Sep-09 10:04

What application are you using to create the setup-package? Most of them allow the inclusion of custom setups or msi-packages that can get installed along the application.

Alternatively, you could check the registry whether B is installed under the key
SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

If it's not, launch setup B, wait until it completes, and relaunch the A-setup. You'd need the ability to launch a custom application from your setup for this.

I are Troll Smile | :)

Raj Jayaswal18-Sep-09 18:55

18-Sep-09 18:55

Currently I am using Visual Studio 2008 deployment setup for making an installer file. Please recommend me some good msi maker if you have one.
I am using following RegKey:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MY_Prerequisite_application

Can you please tell me how to "If it's not, launch setup B, wait until it completes, and relaunch the A-setup. You'd need the ability to launch a custom application from your setup for this."

modified on Saturday, September 19, 2009 1:06 AM

Eddy Vluggen19-Sep-09 1:06

19-Sep-09 1:06

Raj Jayaswal wrote:
Please recommend me some good msi maker if you have one.

I haven't used those tools for a while. You might want to check out this site[^], has a lot of neatly categorized answers Smile | :)

Raj Jayaswal wrote:
If it's not, launch setup B, wait until it completes, and relaunch the A-setup. You'd need the ability to launch a custom application from your setup for this.

The Visual Studio template doesn't have an easy option to launch one of the deployed files before the setup starts. Anyway, there seems to be a better solution;

Setup B would become a Merge Module[^], so that you can add it to your own setup. Once you got a Merge Module, add it to the setup.

Hello World Smile | :)

Raj Jayaswal19-Sep-09 1:26

19-Sep-09 1:26

Still the problem remains same.
I have created a merge module in my solution, added the prerequisite B.exe to it and then added the .msm file to my setup project.

Eddy Vluggen19-Sep-09 1:38

19-Sep-09 1:38

Like I already said, I haven't done this in a while and you'd have to put some extra research in it.

Anyway, there's an article on CodeProject[^] that explains how this can be done.

I are Troll Smile | :)

Raj Jayaswal19-Sep-09 1:50

19-Sep-09 1:50

Thanks for the reply.
This article only explains how to add the prerequisites which are listed over there.
Is there any means by which by which I can add my prerequisite application to that list?

Eddy Vluggen19-Sep-09 2:07

19-Sep-09 2:07

Raj Jayaswal wrote:
Is there any means by which by which I can add my prerequisite application to that list?

Yes, by putting your Merge Module in this directory;

"C:\Program Files\Microsoft SDKs\Windows\v6.0A\Bootstrapper\Packages"

(source[^])

I are Troll Smile | :)

Raj Jayaswal19-Sep-09 3:12

19-Sep-09 3:12

Hi, thanks. I think I am close to the solution.
One more thing. The article you referred to me asks me to copy my exe to the bootstrap folder location and write a .xml file in it. Please verify whether I am writing the correct code in it or not.:

<?xml version="1.0" encoding="utf-8"?>
<Product xmlns="http://schemas.microsoft.com/developer/2004/01/bootstrapper" ProductCode="PrerequisiteName">
  <RelatedProducts>
    <DependsOnProduct Code="Microsoft.Net.Framework.3.5" />
    <DependsOnProduct Code="Microsoft.Windows.Installer.3.1" />
  </RelatedProducts>
  <PackageFiles>
    <PackageFile Name="PrerequisiteName.exe" />
  </PackageFiles>
  <InstallChecks>
    <ExternalCheck Property="PrerequisiteName" PackageFile="PrerequisiteName.exe" />
  </InstallChecks>
</Product>

Thanks

Eddy Vluggen19-Sep-09 3:19

19-Sep-09 3:19

The best verification is a test. I'm not the author of the article, and I haven't created any setups recently.

I are Troll Smile | :)

Raj Jayaswal19-Sep-09 3:21