is it possible to create an application with flash interface in Vb?
I'm using visual basic 2008.thanks.
I did that a decade ago in VB6. Back then, there was an SWF player ActiveX that could be added to a form... I think the ActiveX DLL was included in that standard Flash plugin for IE and the only thing I had to do is to add a reference to that DLL.
Back then, it was distributed by Macromedia... I'm not sure if it's still possible since Adobe is the distributor.
Sorry if I don't have any recent informations about this :(
Related
so my question is relatively simple, can I create VB6 application that references a class in a dll, and then substitute that dll for another at runtime?
Now my intial guess is... no chance in VB6.
So my thoughts turned to a VB.net interop dll. Could I do it in here, and then call the interop dll from the VB?
Again, my guess would be no.... but I'd be happy if someone knew differently.
The only thing that I think would actually work would be DI in .Net, but I'm limited to .net 2, or 3.5 at a big push, so I dont know if that is possible.
So for the background....
I have a dll that a specific site uses, but we dont want to ship that out to everyone. Instead, we want to build a clone dll which just has the interfaces setup so that the VB6 build will complete.
When it gets to the site that needs it, they want to replace the dummy dll, and drop in their version instead.
Note: We do use RegFreeCOM when its gets installed, so I do have the manifest files that I could play around with if needed.
Any ideas would be much appreciated.
Nick
Its a COM dll so its not statically linked to the VB6 exe, so long as the clsids and interface ids are the same in the type library for both DLLs, you can swap them around as you see fit. (If its a VB6 dll this is trivial to do with the 'binary compatibility' build option)
You could also use late binding instead and instead of making a reference directly in your VB6 code, you would create an object and then set that object to an instance.
Examples and information:
MVPS
Microsoft
I am trying to convert some old VB6 code to VB.NET. The VB6 uses a Canvas control, simply
Dim cv as Canvas
I cannot for the life of me figure out how to use the Canvas control in VB.NET (using VS2005). MSDN says it is in the System.Windows.Controls namespace, which doesn't seem to exist? All I see is System.Windows.Forms, which doesn't include the Canvas control. Any tips?
Thanks
You need to find out what the Canvas was in VB6, then you will be able to see what the nearest equivalent is in VB.Net.
I think it must have been an obscure third-party control or possibly some custom code. I've not come across Canvas before in VB6
In recent history things have changed a bit here. There are now two sets of windows frameworks.
Forms are the old one. The new ones are controls, and they come in the WPF and Silverlight variety. WPF is to replace windows forms, silverlight is meant for the web, etc etc.
Since you are using the older VS2005, I believe you will need to install the WPF extensions to get access to them.
Unfortunately the WPF Extensions for VS2005 are no longer supported by Microsoft:
http://blogs.msdn.com/b/acangialosi/archive/2008/06/27/vs-2005-extensions-for-net-framework-3-0-wpf-wcf-ctp-is-coming-off-the-ms-download-center.aspx
You can still get them from various places, but for your own ease you should probably consider upgrading to at least VS2008 if you want to use WPF/Silverlight.
I am using C# and Visual Studio 2008.
I have a class that will turn on the scanner of my Windows Mobile Device and then will capture the read of the scanner when pressed. It will also shut down appropriately and cleanly. I am using a vendor provided SDK to do a lot of the heavy lifting.
I have this working correctly in a Mobile App, but I also need the dll to be able to be called via COM/ActiveX from a web site. I have been going around and around about how to do this. I've bounced between various settings and project types. I've tried converting it over to C++ and ATL. But so far nothing works.
I get conflicting information depending upon where I look. I need help. Can only C++ do this? Is there something I'm missing? I can't be the only person needing to do this. How can I do this?
You cannot create ActiveX/COM components in managed code with the Compact Framework. There is not EE Hosting support, so it simply cannot be done. You will have to write this in C++ (not managed C++, but old-fashioned native).
As a side note that is sometimes overlooked on COM controls, you also have to implement IObjectSafety for the control to work in a browser.
We are in the process of creating active-x controls used within our application.
Since Microsoft stopped supporting classic Visual Basic, is it wise to use Visual Basic to develop the Active X control or the latest VC++/ATL/MFC libraries provide more feature where we can create controls faster by leaving Visual Basic flexibility?
We will not be able to use .NET/VB.NET/C# since the application is supposed to work inside containers and containers may not support latest .NET runtime.
Any other language is best fit for Active X control development other than VB and VC++?
I, personally, would recommend using Delphi for this. It is still actively developed, and has the control you get with C++, but a rapid development environment more like VB.NET.
#nobugz: If you are really interested what is ActiveX in Delphi, look at docwiki. Normally it is 100% source code (yours + VCL, VCL is also available as sources) with autogenerated COM wrappers. So all potential security problems are also in source code. If you find a security problem in VCL, please send a bug report to Quality Central.
Here is a good example on how to create ActiveX Controls with C# .NET
http://www.codeproject.com/KB/cs/CreateActiveXDotNet.aspx
By all means VB6 is the best language. After reading your question I feel that you are a VB6 developer. If you know VB6 and use it then why hesitate using it for producing ActiveX controls.
I program in Delphi as well as VB6 along with VB.NET and C# but creating ActiveX controls is the easiest in VB6 compares to all other development tools.
If you are hell bent on not using VB and if you are looking for an alternative then try out PowerBasic (commercial - very costly) or PureBasic (commercial but affordable) Get it from here or better still MinGW (a GNU C++ compiler).
I have to say that VB6 with a good book like Developing COM/ActiveX Components with VB6: A Guide to the Perplexed you will be up and running faster.
Part of my everyday work is maintaining and extending legacy VB6 applications. A common engine is written in C/C++ and VB6 uses these functions in order to improve performance.
When it comes to asynchronous programming, a C interface is not enough and we rely on COM controls to fire events to VB6.
My problem is that when I register the control in VB6, VB loads this control in memory and does not unload it until I quit the VB6 IDE. As the control is loaded the whole time, I am unable to recompile it in VC6, because the DLL file is locked.
A solution I found is not to enable the control in VB but use the CreateObject() with the full name of my control. The problem then is that I must declare my control as an Object because VB6 knows nothing of the interface I am using and I do not have access to IntelliSense, which is a pain.
Any idea how I can tell VB6 to unload controls after quitting the application or directly in the IDE ?
I'm pretty sure there's no good way to force VB6 to unload the control.
Here's what I do... instead of running Visual C and Visual Basic side-by-side, run VB6 under VC :
Load up VC
Open the project containing your COM objects
Edit, change, etc.
In VC, set the Output Executable to be VB6.EXE with appropriate command-line arguments to load the VB6 workspace
Now just hit F5 to launch the VB6 IDE and load your VB6 project
When you want to change the COM code again, exit VB6.EXE, make your changes, and hit F5 again. As long as you save your workspace VB6 will remember what windows you had open and all your project settings.
Advantages of this method:
You can set breakpoints in the COM object and debug it using a full source debugger
You can happily debug in C and VB at the same time
Whenever VB6 is running it always has the latest version of the COM DLLs