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• How can I disable the F4 key from showing the items in a ComboBox

  - by Alex

  You might not know this, but pressing the F4 key on a ComboBox makes it's drop-down item list appear. I believe this is the default behavior on Windows. Does anyone know how to override this behavior in WPF (C#)? I know that overriding default behavior is generally seen as bad practice, however in this case I have a rugged-device that runs XP Embedded. It has a handful of prominent Function keys (F1-F6) that need to trigger different events. This works fine, however when focused over a ComboBox the events aren't triggered as the ComboBox drops down. I have tried catching the KeyDown event both on the form and on the ComboBox and listening for the F4 key, however it doesn't get this far as the key press must be handled at a lower level. Any ideas? Thanks.

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• How to improve performance of opening Microsoft Word when automated from c#?

  - by Abdullah BaMusa

  I have Microsoft Word template that I automated filling it’s fields from my application, and when the user request print I open this template. but creating word application every time user request print after filling fields is very expensive and lead to some delay while opening the template, so I choose to cache the reference to Word then just open the new filled template. that solve the performance issue as opening file is less expensive than recreating Word each time, but this work while the user just close the document not the entire Word application which when happened my reference to Word become invalid and return with exception says: “The RPC server is unavailable” next time request opening template . I tried to subscribe to BeforClosing event but his trigger for Quitting Word as well as Closing documents. My question is how to know if the word is closing document or quit the entire application so I take the proper action, or any hint for another direction of thinking about improve performance of opening word template.

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• android settings (provider)?

  - by lorenzoff

  Hello to all, i'd like to substitute the default preferences setting activity (vertical, icon-title pair list) with a grid view that better fit a large landscape display. About, let's say, the audio preferences, i add an icon to a GridView and, on item click event, i use this code startActivityForResult(new Intent(android.provider.Settings.ACTION_SOUND_SETTINGS), 0); Is it possible to get the default settings icon? If i could use an ipotetic getDrawable(android.R.drawable.default_icon_for_audio_preferences_settings), I would to maintain the default icon also in my preferences grid. A preferences provider exists? Looking at my development device preferences i can see Wireless, call, audio, display and so on. I have to add the same preferences to my grid because i know a priori about their existence or there is a provider that can supply me this array? Thanks in advance L.

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• jQuery tabs work in Safari and firefox but show up as bullet point in IE

  - by Ria

  I am using the jquery tabs . It shows up fine in Safari and firefox, however it will not load correct in IE. They show up as bullet points in stead of tabs. Here is an example of a page http://www.pianoandkeyboardshoponline.co.uk/Test/detailed_page.php?pro duct_id=302-Casio-CDP120-Digital-Piano-in-Black <script type="text/javascript"> $(function() { $("#jQueryTabs").tabs()({ event:"click", collapsible: false, selected:'0', fx: { opacity: 'none', duration: 1 } }).tabs( "none" , 1 , false ); }); </script> When I refresh the page the tabs show up, however I want them to show up correct when the page is loaded. Any suggestion welcome

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• Need to get to the foreign keys of an entity marked as "Deleted" for auditing

  - by Abhijeet Patel

  I'm using v1 of EF(.NET 3.5 SP1). I'm subscribing to the SavingChanges event of the ObjectContext wherein I audit deletes for a particular entity type. I need to get to the foreign keys of the entity being deleted i.e EntityKeys of the related entities (RelatedEnds) but the EntityKeys of the related entities are nulls. Is there any way to get to the foreign keys of an entity which has been marked for deletion? Does EF null out the EntityKeys of all RelatedEnds for an entity which has been marked for deletion? If so, is there a way I can get hold of the foreign keys?

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• DTPicker: how to open up an control expanded (by default)?

  - by Olli

  Hi all, in my windows form (Visual C++ 6.0) I'm using an Active x control called "CDTPicker" (CDTPicker : public CWnd). My control is opened up by the click event of another button. like this (works fine): void CProducerDlg::OnSelect() { ... m_wndDatePicker.SetValue(varVariant); // hide date combo box if first entry has been chosen m_wndDate.ShowWindow(SW_HIDE); // show date picker if first entry is chosen m_wndDatePicker.ShowWindow(SW_SHOW); // open up calendar view [tbd] ... } What I need is the calendar view to open up expanded (showing the complete month). I don't find any method to do this... Who can help me? Thanks in advance Olli

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• grayscaling images and refering the original image back.

  - by dilip

  I know how to grayscale an image. I am using jquery accordion and I have images on every accordion header. I want to change the image to grayscale when the accordion is active and change the image back to its original form when the accordion is not active. I am using the event accordionChange. The problem is that I am not able to save the original image. Please help. Also after grayscaling I tried to give the original src directly as document.getElementById("imgId").src = "images/pic.jpg"; This is not working.

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• Safari won't request video or audio from HTML 5 media elements?

  - by thure

  So far what I've been developing has worked in Chrome and, using fallbacks, IE8. What I don't get is this: Safari just won't start loading <video> or <audio> content. Safari 6 won't load, and neither will iOS 5's Safari: My code calls .load() on the elements at the appropriate time (at least for Chrome), so what gives? Here is the video declaration: <video width="800" height="600" class="faces" id="facesVideo"> <source src="video/grid.mp4" type="video/mp4" /> <source src="video/grid.ogv" type="video/ogg" /> </video> The audio is declared dynamically, but has the same problem. Do I need to wait for some DOM event that Chrome doesn't need before calling .load()? What does it take to get Safari to start buffering until the elements can fire canplaythrough?

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• Mvp View knows Model

  - by userbb

  I'm trying to use MVP and I notice that my View must know Model that should not happen in MVP I presume. here is example: public partial class TestForm : Form, ITestPresenter { public void LoadList(IEnumerable<AppSignature> data) { testPresenterBindingSource.DataSource = data; } } public interface ITestPresenter { event EventHandler<EventArgs> Load; void LoadList(IEnumerable<AppSignature> data); } and the problem is that in TestForm I need reference to AppSignature. In all tutorials I saw, there are some simple examples like public void LoadList(IEnumerable<String> data) where there is no need reference to model. But how i.e DataGridView can publish current row data?

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• DOM Level 3 CustomEvents not bubbling on WebKit

  - by Edu Felipe

  I'm observing CustomEvents not bubbling, even though I set bubbling to true. The code below: var evt = document.createEvent("CustomEvent") evt.initCustomEvent("mycustomevent", true, false) var someh1 = document.getElementById("someh1") someh1.addEventListener("mycustomevent", function(){ alert("OMG!"); }) document.getElementsByTagName("body")[0].dispatchEvent(evt) With the HTML below: <html> <head></head> <body> <h1 id="someh1">content!</h1> </body> </html> Never shows the alert, demonstrating that the event is not bubbling down. Am I doing something wrong? Please note that if I do a getElementById("someh1") and run the dispatchEvent on it, the alert is displayed. Thanks!

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• The correct point in time to read an ASP .NET 1.1 control property in order to change page output

  - by RossMan

  Using ASP .NET 1.1 with CMS 2002 and C#. Trying to read the contents of a CMS HTML placeholder control into a string reader object so certain logic can be performed and the page output modified before it is displayed: StringReader srHtml = new StringReader(this.HtmlPlaceholderControl1.Html); The problem is that the Html property is empty during Page_Load, I've tried in a PreRender overload as well, but the property is still empty. The HtmlPlaceholder control does render html when the page load has completed. Which event should be handled in order to read the propery of the web control?

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• Avoid Flickering in Windows Forms?

  - by user1733909

  Double buffering not working with combo-box. is there any another methods to avoid flickering in windows forms? i have one windows form with number of panels in it. I'm showing only one panel at a time based on my menu selection. i have one icon panel,one header panel and the combo box. based on the selected item of that combo-box the gridview1 and 2 are filling. when I'm rapidly selecting the combo-box item using my keyboard down arrow the icon panel and the header panel are always repainting. i need to keep that both without any change. this two panels producing some flashing effect(ie,they are blinking or flashing) while I'm changing the combo box selected index. is there any way to avoid this flashing.? i tried double-buffered enabled in form constructor and form load event. Please Help..............

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• Problem with JPopupMenu in a JTree

  - by Alex

  Hi guys I have this issue. In a custom JTree I implemented a JPopupMenu to display different JMenuItem according to the node selected using a MouseListener. The JPopupMenu is shown when the mouse right button is clicked. The problem is that if I don’t choose an Item from the PopupMenu but instead I select another node in the tree, either with right or left buttons, this event is never caught by the tree MouseListener Could anyone point me in the right direction to solve this? In case an example is available I’ll appreciate it. Thanks.

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• WPF List of ViewModels bound to list of Model objects.

  - by Eric

  In the model, I have: public ObservableCollection<Item> Items { get; private set; } In the ViewModel, I have a corresponding list of ItemViewModels: public ObservableCollection<ItemViewModel> ItemViewModels ... In the XAML, I will bind (in this case a TreeView) to the ItemViewModels property. My question is, what goes in the "..." in the ViewModel shown above? I am hoping for a line or two of code to binds these two ObservableCollections (providing the type of the ViewModel to construct for each model object). However, what I'm fearing is necessary is a bunch of code to handle the Items.CollectionChanged event and manually updates the ItemViewModels list by constructing ViewModels as necessary. Thanks! Eric

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• Receive input over TCP/IP and use it to update HTML

  - by mawg

  This has got to be a FAQ, so can someone please just direct me to a "network programming for dummies" URL? The server wants to push information to a client or broadcast to all, when an event happens - as opposed to the clients constantly polling the server "just in case". The client then updates a browser page display. How do I do that? (toldya it was a n00b question) Should I have a thread which receives info on a socket and then writes it to a database which the browser display (PHP) can process with an HTML refresh tag, or what? Sorry to sound so dumb.

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• mySql Delete only removes the data not the entire entry

  - by Mick

  Hi all I have this line in my php code $insert = "DELETE FROM allocation_table WHERE job = '$jobnumber' " ; Mysql_query ($insert) ; The problem is it will remove all the values from the the one line in my table but not the entry itself. as you can see in the picture if I delete where job = 315 , it does not delete the line but does delete all the entries Yet in this code that preceeds it (a different table) . it works fine and the whole line is removed $insert = "DELETE FROM event WHERE jobnumber = '$jobnumber' " ; mysql_query ($insert) ;enter code here can anyone offer some advice please ??

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• Hide twitter bootstrap popover

  - by soft genic

  Following is my jquery code which i am using to display popover . What i wanna do is when a user click anywhere on the screen or on any <span id="close" class="pover"></span> then it hides the current opened popover and show a new popover on which the user clicks on. As You can see below span which contains class="pover" are being poped up by the following jquery kindly let me know how can i hide the opened popup and display a new one accordingly Currently, all the popover are getting displayed on click event. $(document).ready(function() { $('.pover').each(function() { //$('#close').popover( "hide" ); $(this).popover({ title: $(this).attr('abc'), content: $(this).attr('data-content'), delay: "show", trigger: "click" }); }); });

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• jquery replaceWith implications

  - by Vlad Ioffe

  I am using replaceWith for input type=file to handle changes of the file the user wants to upload. I have this code: $('#add_cv_input').change(function() { // here is some code else { alert('put one of this: pdf doc docx'); $("#add_cv_input").replaceWith('<input id="add_cv_input" type="file"/>'); } }); now the problem is that this jquery changed event does not being called after the first time that the user had uploaded the wrong extension. I don't have a clue why this is happening. Everything works fine if at the first time the user uploads a valid extension and then he changes it to other valid extension.

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• Java serial comm notifyOnDataAvailable configure receive buffer size?

  - by fred basset

  Hi All, I have a Java serial driver that's using the notifyOnDataAvailable mode to enable async. receive notification. I see an occasional problem where the SerialPortEvent.DATA_AVAILABLE serial event is not called until a relatively large no. of characters have been received (e.g. 34). The problem is that the sender sent a 20 byte packet, so the Java receiver did not send an ACK until the sender did a retry of the 20 byte send. Is there any way in Java COMM to configure the size of the receive buffer?

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• crash in the handler that moves up a treenode in a treeview c#

  - by voodoomsr

  i have a event handler that moves the selected treenode up. I don't know why is crash in the line with comented. treeviewdocxml is a treeview object, from System.Windows.Forms treeViewDocXml.BeginUpdate(); TreeNode sourceNode = treeViewDocXml.SelectedNode; if (sourceNode.Parent == null) { return; } if (sourceNode.Index > 0) { sourceNode.Parent.Nodes.Remove(sourceNode); sourceNode.Parent.Nodes.Insert(sourceNode.Index - 1, sourceNode); //HERE CRASH } treeViewDocXml.EndUpdate();

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• Monitoring file upload progress in Actionscript 3

  - by helloworlder

  I'm trying to track the progress of a file upload in AS3, and I'm getting strange behavior. When I select a file and upload it, the progress is instantaneously 100% even if the file is 10 or more megabytes, but it's not finished. The onComplete event is fired about 30 second to a few minutes later (depending on file size) when the file has really finished uploading. I've tested this locally and on the server, the behaviour is the same. Has anyone else experienced this? Very frustrating ... Otherwise, the file is uploading fine. The code is simple: myFileReference.addEventListener(ProgressEvent.PROGRESS, onUploadProgress); function onUploadProgress(e:ProgressEvent) { var pctDone:Number = (e.bytesLoaded / e.bytesTotal) * 100; trace(pctDone); }

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• JQuery Div not animating in click function

  - by Doug

  Hi Everyone! I have the following code, I am attempting to have a div animate on a click event, but for some reason the div is immediately moving to the location and it's not animating to the coordinates specified, what am I doing wrong here? code: $(document).ready(function() { $('#example1').click(function(e){ var x = e.pageX - this.offsetLeft; var y = e.pageY - this.offsetTop; $('#example1-xy').html("X: " + x + " Y: " + y); var leftOfShip = x; //var leftOfShip = document.getElementById("ship").style.left + 20; $("#ship").animate({left: $("#ship").css("left",leftOfShip)},5000); }); }); Any Advice would be of help!!

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• Is MDI Form focused?

  - by Vercas

  I've had so much luck developing my application... until now. My application's main form is a MDI parent, and I didn't think of adding any MDI children in my tests until tonight. To my surprise, the MDI parent seems to never "get focus" now. The Focus event and the OnFocus method are never called! I mean... it appears focused but none of the in-code focusing events/methods work. Instead a MDI child reports the focus. How do I fix this?

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• Refresh combo box in Windows Form VB.NET

  - by fireBand

  Following is the code to populate combobox using DataSource Dim CountryList As Array = MyCtrl.GetAllCountries With cbCountyList .DataSource = CountryList .DisplayMember = "CountryName" .ValueMember = "CountryID" End With After adding a new COuntry Name to Database I want to reflect the changes in combobox. Repeating this code is not an option becasue it triggers SelectIndexChange event and had to do some crappy work around to avoid that. So I was wondering if there is way to refresh the combobox list. I actually thought binding with the DataSource property supposed to do it automatically. I also tried cbCountyList.Refresh() Thanks in advance.

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• wxpython : button covers all in the frame

  - by Prakash

  Below is my code: #!/usr/bin/python # -*- coding: utf-8 -*- import wx class Example(wx.Frame): def __init__(self): #super(Example, self).__init__(parent, title=title, size=(300, 200)) wx.Frame.__init__(self, None, wx.ID_ANY, 'wxButton', pos=(300, 150), size=(320, 250)) self.button1 = wx.Button(self, id=-1, label='Button1', pos=(8, 8), size=(10, 20)) self.button1.Bind(wx.EVT_BUTTON, self.button1Click) self.Centre() self.Show() def button1Click(self,event): #self.button1.Hide() self.SetTitle("Button1 clicked") if __name__ == '__main__': app = wx.App() Example() app.MainLoop() Actually I am expecting the button1 on the frame to have a look like a button - a bit raised and be placed in center of frame - but it is just expanding to the full frame. Also text Button1 looks like a text which does not has a button look like feeling? What wrong am I doing?

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