Listbox not responding properly to two subsequent clicks

.NET Compact Framework

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    - Debugging WinCE 5 apps not working I'm trying to debug a Compact Framework 2.0 app on a Windows CE 5 device from VS2005 sp1. I assumed this should just work out of the box. When I set a breakpoint in the CF app, deploy and start debug the breakpoint indicates it wont be hit. The little exclamation point icon on the breakpoint indicates 'the specified module has not been loaded'. Any idea what is causing this The app deploys and runs fine on the device but I cannot debug. I thought this was a no-brainer. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Web service via a proxy server I have an application written in C# using .Net CF 2.0 which consumes a web service which sits on one of my servers. My device is running WM5 and the dev env is Visual Studio 2005. In the code, I create the web service, check there's a valid internet connection like this: ... req = ((HttpWebRequest)(WebRequest.Create(" http://www.microsoft.com "))); res = ((HttpWebResponse)(req.GetResponse())); if(res.StatusCode == HttpStatusCode.OK) return true; ... and then invoke a method on the webservice. This all works fine with the device cradled until I change my network settings to go via a proxy server. The PPC seems to pick up these proxy settings after a reset and I can see the web service via IE on the device. However, when I run the code it fails as soon as I try to invoke a method on the web service. The calls to the WebRequest used to check the internet connection still succeeds, but the webservice calls fail. The exception's HResult is -2146233079 and the _message is "WebException", there is no innerexception. I've tried setting the following just before I create the webservice: System.Net.GlobalProxySelection.Select = new System.Net.WebProxy(" http://192.168.x.x:6588 "); and I also set the following when I create the webservice: cws.Proxy = new System.Net.WebProxy(" http://192.168.x.x:6588 "); both of which are using the correct IP and port number. but this has no effect. I'm assuming that if the internet connection is fine in the app then I shouldn't need to make these calls anyway. I also assume that I'd only need to set the System.Net.GlobalProxySelection.Select and all subsequence web requests would then use these setting so there'd be no need to specify the proxy when I create the web service. Does anyone know what the problem is Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - deploying Hello, how can i install sql ce and cf 2.0 when my application is installed with the same file, without the user to run diffrent cab files. thnx in advance. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - error with Win32 Smart Device application compiling Here's one more error... When trying to compile a Win32 Smart Device Application (it's an empty console application with an empty "main" function in it), I get the following error: "error LNK2019: unresolved external symbol wmain referenced in function mainWCRTStartup" The error occurs in "corelibc.lib" Can anyone shed light on why this is occurring when the project is almost empty Thanks, Phillip Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - radio form buttons? done, see here for the result: http://www.aeroxp.org/board/index.php showtopic=6391 Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Question on removing InstallDir from [CEStrings] section of INF file Cool! Thanks, Bob! BTW: I discovered why my CAB file, once built without the InstallDir key, wouldn't install. The pszInstallDir arg in the Setup.dll exported functions is NULL when the InstallDir key isn't defined in the .inf file, and our Setup.dll wasn't checking for that state before attempting to use the value (bad). After fixing that, all is good! No prompt! Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Getting a web with cookie How to getting the web with cookie and post some data to the server with the cookie the .net CF seems not support the cookie..... Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - httpwebrequest hi im trying to convert java to c# now. trying to understand how to change this to C#. first problem that i have met. in java, httpConnection has the setRequestProperty and get HeaderField. however i cant find the equivalent for these in c# for cookie. conn. setRequestProperty ( "cookie" , mSession); String cookie = conn. getHeaderField ( "Set-cookie" ); second problem that i have met. i have changed the getResponseCode() to getResonse() in C#. but i got an error Cannot implicitly convert type 'System.Net.WebResponse' to 'int'. also i am trying to convert HttpConnection.HTTP_OK, dataInputStream and OpenInputStream to c#, which i could nto find an equivalent. int rc=0; //conn.getResponseCode(); try{ rc=conn.getResponseCode(); }catch(Exception e) {System.out.println(e);} System.out.println("rc have already"+conn.getResponseCode()); if( rc==HttpConnection.HTTP_OK ) { StringBuffer text=new StringBuffer(); try{ DataInputStream din=new DataInputStream (conn. openInputStream ()); int n=din.readInt(); while(n-->0) { text.append(din.readUTF()); text.append(' '); } } Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Redistribution of .net framework 2.0 Thanks again for your quick response i appreciate it. Here is my before install method where at the bottom i try and run the app manager twice. For some reason it only installs the framework and skips my app. I have two seperate INI files and i have added the "NETCFv2.wm.armv4i.cab" and both INIs to my MSI. Do I have to make a seperate custom installer for each install One for the framework and one for the application Code Snippet void CustomInstaller_BeforeInstall(object sender, InstallEventArgs e) { // Find the location where the application will be installed string installPath = GetAppInstallDirectory(); // Create the target directory Directory.CreateDirectory(installPath); // Copy your application files to the directory foreach (string installFile in Directory.GetFiles(TEMP_PATH)) { File.Copy(installFile, Path.Combine(installPath, Path.GetFileName(installFile)), true); } // Get the path to ceappmgr.exe RegistryKey keyAppMgr = Registry.LocalMachine.OpenSubKey(CEAPPMGR_PATH); string appMgrPath = (string)keyAppMgr.GetValue(null); keyAppMgr.Close(); // Run CeAppMgr.exe to install the .net framework if needed onto the device System.Diagnostics.Process.Start(appMgrPath, "\"" + Path.Combine(installPath, CEAPPMGR_INI_FILE_FRAMEWORK_SETUP) + "\""); // Run CeAppMgr.exe to install the files for nelson to the device System.Diagnostics.Process.Start(appMgrPath, "\"" + Path.Combine(installPath, CEAPPMGR_INI_FILE_NELSON_SETUP) + "\""); } Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Cannot connect to web service on my local machine... Please make sure you have not enabled NE2000 card and cradled at the same time. -Thanks, Mohit Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - VS .NET to VS.NET 2005 As mentioned above, if the true data type of the field is compatible with DateTime, then definitely use CType for speed and simplicity. CType cannot be used for parsing strings, though... you must use Parse or ParseExact for that. For your example, something like Dim oDate As DateTime = DateTime.ParseExact("2006.01.01", "yyyy.MM.dd", _ System.Globalization.CultureInfo.CurrentCulture) ...should work. -Ryan / Kardax Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Webservice GPRS Connection Hi Guys, I know that by calling a webservice, the connection is automatically setup. Is it possible to force the call to use a specific connection, one that has been setup using the connection manager I would like to be able to control the connection and to close it after use. I have tried using connection manager to first set up a connection and then close it, but it seems that the call to use the webservice creates another connection. Is this correct Or does it grab the existing connection and say "hey, this is mine now" and have exclusive use of it Many thanks, Millicent. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
  - 13
    - Out of memory exception on WinCE5.0 First thanks for answer. I already do GC.Collect when close the forms. How can I make a memory manager Bye Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Get Camera Data without showing on the screen? Hello... I want to write an application for a pda which uses the camera. I need the current camera data, i.e. video stream or only images. The problem is that I don't want to see the current video on the screen! Is this possible with the new Camera Capture API for Windows Mobile 5.0 Can I capture the video data without showing the video --Jacqueline. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - C++ wrapping around C# Well, thanks again. Your comments have been very useful. I can not launch a separate process because I need both of them to exchange information in a particular way. So I am going to re-write the code, but this time in C++. Cheers Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Battery Backup It's not really a backup battery on that device, it's an extra battery. Whatever you can detect it or not depends on how OEM implemented it. Say, you can get a car battery and plug it via some adapter into normal external power inlet on device. So technically it’s a battery but device would think it’s running on mains power. It's not that farfetched, there are several external laptop batteries like that. You should contact OEM and ask them if that extra battery can be checked upon via standard power APIs. However I would say you don’t need to worry about that as extra battery would likely to kick in on its own. If power is coming down that likely means both main and extra batteries are empty. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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  - 1
    - Problem with a flyout using click to show/hide it Hi th ere, my gadget is a simple button and with a click it shows the flyout and with another click on the button it hides the flyout. so i made something like this: Code Snippet <div id="updateRadio" border="none" style="position:left;" onclick="if (System.Gadget.Flyout.show == true){ System.Gadget.Flyout.show = false; } else System.Gadget.Flyout.show = true; "> <g:image src="button.png"/> </div> the problem is that when i click it shows the flyout normally but to close it i need to click 2 times on the button. it seems that after one click the gadget take the focus and with the second click it runs normally. am i right and what can i do to solve my problem thx Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - resize the gadgets by default In theory, you're right. The issue comes in where IE resizes itself, then the callback from the WebService finishes processing after the main routine completes. The callback then finishes and expands or shrinks in some cases, the iframe. The sizing then becomes off and calling the .resize at the end of the callback method fixes it, It's repeatable and reproduceable everytime without failure (if there is a delay in the processing of the information from the webservice). Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - File operations What's the best way to check if a file exists in a gadget subfolder And what's the best way to get a list of all files within a subfolder Andy Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - VB.NET WM 5 Alpha Blend function won't draw I am trying to use the WM5 AlphaBlend() function to add transparency to an image. I found this link that contains a great example in C#. http://blogs.msdn.com/chrislorton/archive/2006/04/07/570649.aspx#571734 When I download and run the C# example it works fine. I converted it to VB , but now the image does not display. I don't get any errors returned, but nothing is drawn. Here is my code. Any help would be appreciated. Imports System.Reflection Public Class Form4 'Dim constantAlphaImage As Bitmap Dim constantAlphaImage As Image Protected Overrides Sub OnPaint( ByVal e As PaintEventArgs) ' Load the image to use with the AlphaBlend API. Dim path As String = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase) constantAlphaImage = New Bitmap(path + "\blendme.bmp" ) ' AlphaBlend takes two HDC's - one source and one destination. Here's the source. Using gxSrc As Graphics = Graphics.FromImage(constantAlphaImage) Dim hdcDst As IntPtr = e.Graphics.GetHdc() Dim hdcSrc As IntPtr = gxSrc.GetHdc() Dim blendFunction As New BlendFunction() blendFunction.BlendOp = CByte (BlendOperation.AC_SRC_OVER) ' Only supported blend operation blendFunction.BlendFlags = CByte (BlendFlags.Zero) ' Documentation says put 0 here blendFunction.SourceConstantAlpha = CByte (128) ' Constant alpha factor blendFunction.AlphaFormat = CByte (0) ' Don't look for per pixel alpha PlatformAPIs.AlphaBlend(hdcDst, Left, Top, Width, Height, hdcSrc, _ 0, 0, Width, Height, blendFunction) gxSrc.ReleaseHdc(hdcSrc) ' Required cleanup to GetHdc() ' Required cleanup to GetHdc() e.Graphics.ReleaseHdc(hdcDst) End Using End Sub End Class Imports System Imports System.Collections.Generic Imports System.Text Imports System.Runtime.InteropServices Public Structure BlendFunction Public BlendOp As Byte Public BlendFlags As Byte Public SourceConstantAlpha As Byte Public AlphaFormat As Byte End Structure Public Enum BlendOperation As Byte AC_SRC_OVER = 0 End Enum Public Enum BlendFlags As Byte Zero = 0 End Enum Public Enum SourceConstantAlpha As Byte Transparent = 0 Opaque = 255 End Enum Public Enum AlphaFormat As Byte AC_SRC_ALPHA = 1 End Enum Public Class PlatformAPIs <DllImport( "coredll.dll" )> _ Public Shared Function AlphaBlend( ByVal hdcDest As IntPtr, ByVal xDest As Int32, ByVal yDest As Int32, ByVal cxDest As Int32, ByVal cyDest As Int32, ByVal hdcSrc As IntPtr, _ ByVal xSrc As Int32, ByVal ySrc As Int32, ByVal cxSrc As Int32, ByVal cySrc As Int32, ByVal blendFunction As BlendFunction) As Int32 End Function End Class Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Visual Studio 2005 With WM5 I've just upgraded to a WM5 pocket PC, and basically, do I need the WM5 SDK I mean, in Visual Studio 2005, am I still OK to make programs using the Windows Mobile 2003 wizards and deploy using the Deploy to Windows Mobile 2003 device stuff Or do I need to install the WM5 devkit Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - how to load dll file in smartphone? Hi Michael, Thanks for your help. But, i cannot find the "In the next dialog, select DLL and check the 'Export symbols' checkbox." which you mentioned in the reply. Do you mean that besides add in the DLL only, i should add in the mathlab source files in the project as well Is it mean add the reference Because even if i add the reference, i still get the same error. Any other method i can try Thanks for your help. Cheers, christine Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - resource assembly error - System_SR_ENU_wm.cab installed. I've fixed this now - the problem was the resource cab files under program files\visual studio 8\smartdevices\etc..... didn't work. I took the cab from windows\microsoft.net\etc... instead and it worked! Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - Help : Gadget Building I've had this a few times as a freak occurrence. Have you tried re-packaging it a few times Check the following, too: * Make sure you're not right-clicking the root folder and choosing "Send To -> Compressed (zipped) folder" you actually need to go into your .gadget folder and select all the files, then click "Send To -> Compressed (zipped) folder". * Are you using third party software to build your zip ie WinRAR, WinZip, Power Archiver etc. I'm not saying that these would be causing the problem but I wouldn't rule it out either. * As mentioned, make sure none of the folders are empty. * Validate your XML at http://www.w3.org I thought of some more but they've gone now. That's what working with these damn things all the time does to you! Andy Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - install root certificate on disk image using platform builder? Thanks -- I'd seen that and was hoping to avoid having to use something similar. I think I've stumbled across what I was looking for. The document here talks about adding a certificate to the system store essentially at build time. When one is an oem manufacturer (i.e., builds and image using platform builder), one can have a custom file PKCS #7 file that enumerates the trusted authorities to add to the system store. The first time the machine tries to use any certificate stuff, it will load that file and then delete the registry key that tells it where to look for the initialization file. I'll post again when I've figured out exactly how to make/edit the .p7b file to include my server root certificate so that it trusts my server out of the box and is able to communicate to a web service on it over SSL without any user intervention. Deborah Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - submission rejection: "vulnerable to malicious attacks" Thanks for the reply Jonathan! Are you sure nothing here needs sanitizing this part of the code-- Code Block document.getElementById("cell" + (i)).innerHTML = '<div onClick=\"showFlyout(' + i + ');\">' + rssDate + '<div class="title">' + rssTitle + '</div></div>'; --inserts html from the rss feed into div elements on the html page using the innerHTML property. Shouldn't this require cleansing Thanks. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
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    - iPAQ screen problem!! Thank you very much!! Problem solved!! Thanks ErickEJ and IIYa Tumanov both were of great help. Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
  - 12
    - Decrypt a text file using TripleDES Hi Matteoathen, I must appologise for that... The incorrect version was uploaded to the blog. The version which made it to the blog was not the latest version and it suffered from a similiar problem to your original code sample. I have uploaded the correct version of the sample project. You will notice in the original version that the initialisation vector (IV) property was not explictly set in the encrypt and decrypt methods. This meant that the encryption/decryption processes were using randomised values. This meant strings encrypted with the sample application could not be decrypted once you had changed the encryption algorithm (or restarted the app). Since both occurranges caused the IV value to be regenerated again. Please download the updated version ( http://www.christec.co.nz/blog/wp-content/uploads/2007/08/fileencryptionexample.zip ), and see the minor changes from the incorrect version which was previously uploaded. In the case of your latest code snippet see if you change // Generate key of the required size string yes = "RYmOKGAboXwQ6IrEgZmjuw==" ; algorithm.Key = ParseKey(yes); into // Generate key of the required size string yes = "RYmOKGAboXwQ6IrEgZmjuw==" ; algorithm.Key = ParseKey(yes); algorithm.IV = new Byte[algorithm.BlockSize / 8]; // set IV to all zero's (not the wisest choice) if this helps fix the problem. This additional line would also need to be in your encryption method. Typically a more "randomised" IV would be utilised, something which possibly is more message specific. How to generate the IV value, or transmit it, is reasonably application specific. Sorry for the inconveniance, Christopher Fairbairn Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
  - 13
    - Checking programatically if POCKET PC is cradled ?? Personally I've always checked the IP address. Write a tiny utility to display the IP addresses of the local machine. Desktop code works just fine on the handheld. I believe you'll see your IP address is 192.168.55.100 or 192.168.55.101... can't recall right now. One is the desktop, the other is the pc. ActiveSync v4 those numbers changed to something else. This requires that ActiveSync is configured to allow IP pass through which is enabled by default. I've used this from PocketPC to Windows Mobile 5 in eVB and C#/VB.NET without any reported problems. If you need similar the PC to be in control you can add the registry entry for AutoStartOnConnect and create a desktop control program to launch a program on the handheld device using RAPI. I'll leave it to you to search for ActiveSync AutoStartOnConnect and how to resolve an IP address using whatever language you're using. Cheers, - Russ Ryba Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
  - 14
    - regarding the Image transition hi Guang , thanks a lot . i checked out the article from the link that you have mentioned , but it doesnt show the support for .Net Compact Framework 1.0 . since i am developing my application in CF 1.0 , i need a corresponding api .... thanks sadiq Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
  - 15
    - System Error Messages in WIndows CE There are some messages which are sent to all top level windows by Windows CE Operating System. For Example - Power on/off (537 - WM_DEVICECHANGE) By subclassing a window procedure those messages can be monitored.(using MessageWindow class) I want to know whether the Sytem Error Messages are sent to the all top level windows by OS or not Is there a way to monitor System Error Messages in compact framework Thank You Mahesh Kumara Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development
  - 16
    - NETCF 2.0 and Desktop COM Interop Is there exists any way to communicate with Desktop COM component from NETCF Mobile application via ActiveSync connection Tag: .NET Compact Framework Listbox not responding properly to two subsequent clicks Smart Device Development

fastforw

Please help me!

I haven't found anything regarding this problem on the internet.

If you are using a listbox in .NET compact (only true for compact!) you'll notice sort of a delay between two subsequent clicks selecting different items. The selection does not update if you do this too fast - the click event gets lost.

It's really awful having to wait between to clicks!

The problem also is showing up with listviews in detail view.

How can you avoid this behavior Note that it's not an performance issue since there are only 3 items in the listbox. Try it with the emulator by creating a project, putting a listbox in the form and hit run. Then select an item in the listbox and almost instantly switch to an other one (that is a common practice in case you hit the wrong item at first).

Thanks for your help,

Mark

Re: .NET Compact Framework Listbox not responding properly to two subsequent clicks

fastforw

May anyone try this out, too
It only occurs with the stylus (mouse click in the device emulator). Using the hardwarekeys there is no delay! Please help me, I simply can't go on with this problem.

Re: .NET Compact Framework Listbox not responding properly to two subsequent clicks

Chunsheng Tang - MSFT

Hi, Mark

If you click the items 'too fast', the subsequent click will probably be treated as a double click instead of a click, thus the click seems to be omitted. To change this behavior I am afraid you have to build a custom control of your own. You can post a suggestion at

http://connect.microsoft.com/VisualStudio/

Thanks

Best Regards

Chunsheng Tang