AlphaMobileControls

Source code checked in, #69631

Project Collection Service Accounts — Mon, 01 Oct 2012 21:13:48 GMT

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Source code checked in, #69630

Project Collection Service Accounts — Mon, 01 Oct 2012 21:07:03 GMT

Checked in by server upgrade

New Post: Alphablend function in Windows CE 5.0?

BeeMobile — Tue, 25 Oct 2011 12:53:00 GMT

Hello lordon.

Your issue as well as many others are solved in the third-party control pack - Bee Mobile iPack. They contain their own Windows CE PNG image decoder, AlphaBlend function, Gradient-Fill function and other functions needed for Windows CE applications to have a good looking GUI. Find out more information on the web site http://beemobile4.net/. If you have any questions, do not hesitate to write me here.

Best regards

Vladimir Gregor

New Post: Improved version of AlphaMobileControl

HyperCraKeR — Wed, 07 Sep 2011 16:01:59 GMT

I have added some controls like an AlphaAnimation, AlphaRadioButton and the alphaLabel can now be a link aswell. Where can I send you that changes?

New Post: Can't Create AlphaPanel

unicorn6684 — Mon, 22 Aug 2011 09:43:53 GMT

When I'm Trying to drag AlphaPanel From The Toolbox, I get An Exeption:

"Failed To Create component 'AlphaPanel'......

System.Runtime.InteropServices.COMException(0x8000000A): the data necessary to complete is not yet avaiable..

help please...

New Post: alphamobilecontrol for for .net cf 3.5

daleykd — Thu, 21 Apr 2011 17:33:48 GMT

Just include the source code in your project/solution and compile. It worked great for me.

New Post: Application Crashes without throwing exceptions

elmsafer — Fri, 01 Apr 2011 13:30:05 GMT

I was able to capture the error. Here is the stack details:

PlatformAPI.IImage.GetImageInfo()

AlphaMobileControls.AlphaImage.Draw()

AlphaMobileControls.AlphaPictureBox.Draw()

AlphaMobileControls.AlphaControl.DrawInternal()

AlphaMobileControls.AlphaContainer.OnPaint()

AlphaMobileConrols.AlphaForm.OnPaint()

System.Windows.Forms.Control.WnProc()

System.Windows.Forms.ContainerControl.WnProc()

System.Windows.Forms.Form.WnProc()

System.WIndows.Forms.Control._InternalWnProc()

Microsoft.AGL.Forms.EVL.EnterMainLoop()

System.Windows.Forms.Application.Run()

So, this happens when I try to open a form with AlphaMobileControls on it. I believe it is a GC issue. We need to be disposing the form correctly.

New Post: Why I get an unspecified error?

elmsafer — Wed, 30 Mar 2011 21:09:25 GMT

I am having the same issue. Did you find a solution?

New Post: Application Crashes without throwing exceptions

elmsafer — Wed, 30 Mar 2011 16:20:35 GMT

Since I applied the Alpha controls to my application, it started to crash randomly while using it. The problem is that it is not displaying any error messages nor any exception is being caught. My application use to work fine before I replaced the traditional controls with the Alpha controls. This problem happens only when I am switching between forms.

I am suspecting a memory leak or something to do with the external AlphaMobileControl DLL calls.

Anyone had similar problems?

New Post: Why I get an unspecified error?

yybsqwh — Fri, 25 Mar 2011 11:07:00 GMT

What was worse, I just found that this exception will occur not only when the phone enter the idle status but also when I open a new window and then close it.

In fact, this exception will occur when the AlphaMobileForm repaint.

Can any one tell me how to solve this problem?

New Post: Why I get an unspecified error?

yybsqwh — Fri, 25 Mar 2011 09:25:25 GMT

I have used the AlphaMobileControls in my project. I have to say that those controls are really beautiful.

However, the forms generated from the AlphaMobileForm will generate an unspecified error when the phone enter the idle status while the forms generated from the Form class won't.

The stack information of this exception is:

PlatformAPI.IImage.GetImageInfo()

AlphaMobileControls.AlphaImage.Draw()

AlphaMobileControls.AlphaPictureBox.Draw()

AlphaMobileControls.AlphaControl.DrawInternal()

AlphaMobileControls.AlphaContainer.OnPaint()

AlphaMobileConrols.AlphaForm.OnPaint()

System.Windows.Forms.Control.WnProc()

System.Windows.Forms.ContainerControl.WnProc()

System.Windows.Forms.Form.WnProc()

System.WIndows.Forms.Control._InternalWnProc()

Microsoft.AGL.Forms.EVL.EnterMainLoop()

System.Windows.Forms.Application.Run()

......

Can any one tell me how to solve this problem?

New Post: Alpha controls

vikas21081987 — Sat, 12 Feb 2011 23:41:09 GMT

Hi,

I am really very interesting in this and very new to mobile development. Can someone please tell me, how can i use these controls in my project.

Please reply..................

New Post: alphamobilecontrol for for .net cf 3.5

maanikmca — Wed, 19 Jan 2011 13:36:11 GMT

Hi,

i need this source for .net cf 3.5 can anyone give me a link regarding this ?

i cant use this dll in vs 2008 , its prompts me an error[application encountered an serious error and it must be shutdown] and it blinking once ..

Please guide me .?

Commented Issue: Native Exception in AlphaImage Draw method [3720]

INTPnerd — Fri, 12 Nov 2010 02:28:25 GMT

The problem is because a managed array is passed to the COM object. Once the garbage collector decides to free/move this array all hell break loose.
Here's a fix:
In IImagingFactory.cs, replace:

// We need the MarshalAs attribute here to keep COM interop from sending the buffer down as a Safe Array.
uint CreateImageFromBuffer([MarshalAs(UnmanagedType.LPArray)] byte[] buffer, uint size, BufferDisposalFlag disposalFlag, out IImage image);

With:

uint CreateImageFromBuffer(IntPtr buffer, uint size, BufferDisposalFlag disposalFlag, out IImage image);

In AlphaImage.cs add this in the top of the file:

using System.Runtime.InteropServices;

And replace:

factory.CreateImageFromBuffer(pbBuf, cbBuf, BufferDisposalFlag.BufferDisposalFlagNone, out alphaImage._image);

With:

// Copy stream data into an unmanaged global buffer that will be freed by the factory once image is decoded
// note that we cannot pass pbBuf directly since it might be moved around or freed by the gc.
IntPtr p = Marshal.AllocHGlobal((int)cbBuf);
Marshal.Copy(pbBuf, 0, p, (int)cbBuf);
factory.CreateImageFromBuffer(p, cbBuf, BufferDisposalFlag.BufferDisposalFlagGlobalFree, out alphaImage._image);
Comments: ** Comment from web user: INTPnerd **

Sweet bug fix! This really needs to be applied to the code base. The library completely unstable and unusable without this bug fix if your code uses the AlphaImage.CreateFromStream(...) or AlphaImage.CreateFromResource(...) methods at all.

New Post: NullReferenceException from AlphaImage.CreateFromResource()

INTPnerd — Thu, 21 Oct 2010 05:44:10 GMT

You need to call AlphaImage.CreateFromResource() from the assembly that has the required resource.

The change I made that caused this to stop working was that I moved the class that was calling AlphaImage.CreateFromResource() into a separate library from the one that had the image resource. Therefore Assembly.GetCallingAssembly() which executes from inside AlphaImage.CreateFromResource() is returning the assembly that does not have the resource.

New Post: NullReferenceException from AlphaImage.CreateFromResource()

INTPnerd — Thu, 21 Oct 2010 02:22:15 GMT

I have posted an updated version of this question with my updated progress at

http://stackoverflow.com/questions/3983250/nullreferenceexception-from-alphaimage-createfromresource

I will post the answer here too when I find it.

New Post: NullReferenceException from AlphaImage.CreateFromResource()

INTPnerd — Wed, 20 Oct 2010 23:20:02 GMT

I am using AlphaImage.CreateFromResource(imageResourceName) to create an AlphaImage object. This was working fine before, and now it is not and I can't figure out why. I am passing a valid resource name. It is a resource that I added using the Resources tab of the project properties. Also in the resources folder the image file is there and the Build Action is set to Embedded Resource. I even used this code to retrieve the available resources, and the one I am using was one of the returned values:

string[] names = Assembly.GetCallingAssembly().GetManifestResourceNames();

Then I was thinking that maybe by the time the AlphaImage.CreateFromResource() method code is running the available resources might be different. So I modified the code to include the above statement and then throw an InvalidOperationException if the passed resource is not an available resource. When I run the program and step through the code with the debugger, the added code is not there anymore and an InvalidOperationException is not thrown and the code keeps running until the NullReferenceException occurs. I searched my projects to see if maybe there was a reference to another version of AlphaMobileControls other than the one with the modified code, but I could not find any.

Any help will be appreciated, thanks in advance!

Updated Wiki: Home

Statyk7 — Sat, 02 Oct 2010 00:36:18 GMT

Project Description

AlphaMobileControls is a .NET Compact Framework 2.0 API offering WinForm Controls for Windows Mobile 5 or 6 able to handle images with alpha channel and alpha blending.

Screenshots

Project Details

I wanted to have some simple but nice controls to work on Windows Mobile devices using the .NET Compact Framework and I founded this article:
http://blog.opennetcf.org/ayakhnin/PermaLink,guid,0b5a9c02-0a44-4d5e-85f9-949cab4ad8f3.aspx

The source code is provided but it was really specific to the need of the application and it was not possible to do the UI layout using the Visual Studio Form Designer. So I decided to create some controls to handle images with Alpha Channel and Alpha Blending, it is what I did, and decided to share it to everybody, and name it AlphaMobileControls.

Only a few simple controls are currently available, they are "AlphaControl":

AlphaLabel
AlphaPictureBox
AlphaImageButton

They must be contained in a particular container, either an AlphaPanel or an AlphaForm.

The Alpha Channel in images in managed by the Imaging API andthe Alpha Blending is managed by the AlphaBlend() SDK function. Here is a great article about theses 2 nice features available since Widows Mobile 5: http://blogs.msdn.com/chrislorton/archive/2006/04/07/570649.aspx

A nice article has been published on CodeProject by Atanu Mandal: http://www.codeproject.com/KB/windows/Windows_Mobile_UI.aspx

Enjoy :o)

New Post: SizeMode of Image

laedit — Tue, 31 Aug 2010 15:14:36 GMT

In order to do that, change the Draw method of AlphaImage:

// Draw the image, with alpha channel if any
IntPtr hdcDest = gx.GetHdc();
Rectangle dstRect = new Rectangle(bounds.X, bounds.Y, bounds.X + bounds.Width, bounds.Y + bounds.Height);//(int)imgInfo.Width + bounds.X, (int)imgInfo.Height + bounds.Y);
_image.Draw(hdcDest, ref dstRect, IntPtr.Zero);
gx.ReleaseHdc(hdcDest);

New Post: Enable Autoscroll for AlphaPanel

nikeshnewaskar — Sat, 07 Aug 2010 09:47:18 GMT

I want to enable Auto Scroll for Alpha panel.

I also set the Auto Scroll property to true, but the scrolls bars do not appear.

Any idea what needs to be done for this.???

Thanks,

Nike