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• How to subscribe to EventHandler of a private control outside of Form

  - by randooom

  Hi all, maybe my design is not good, or I don't see the obvious solution, but I want to subscribe to a buttonClick EventHandler of Form1 from outside form1. For example I have a Controller and Form1 who are both instanced in the main function. Now I want to subscribe a function from Controller to the buttonClick event from Button1_Click in Form1. But the button1 is declarded private, so i can't do form1->Button1->Click += gcnew EventHandler(controller->function) Is there any way to get around this? Ok I could write a setter or something in Form1, but is there any other solution? I read some examples, but they are all calling events from within the same class so they don't address my specific problem.

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• how to create multiple selections in text edit box in qt4?

  - by Ronny

  Qt3.3 used to allow for multiple selections in the QTextEdit widget by calling the setSelection() function and specifying a different selection id (selNum) as the last argument in that function. In Qt4, to create a selection, I do it by creating a QTextCursor object and call the setPosition() or movePosition() methods. I have no problems being able to create a single selection of text. I am, however, unable to find a way to create multiple selections. The methods in Qt4 do not have an argument which allows you to set a selection id, nor can i find any other function in the QTextCursor or QTextEdit which looks like it might allow me to do so. Has this feature been completely removed from Qt4? or has is there a new and different way of doing it? Thanks. Ronny

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• Breakpoint when variable takes on a certain value.

  - by Mick

  I have something analogous to the following code... void function(int x) { // complicated operation on x blah blah } It all appears to be working fine except when x happens to be a particular value, say "273". But x being 273 is a rare event, 99.999% of the time it is some other value. Now I wish to observe the events when this function is called with x=273, so I would like to insert a breakpoint that gets hit only with x is that value. Perhaps I could do it like this: void function(int x) { if (x == 273) { // put breakpoint on this line. } // complicated operation on x blah blah } The problem is that presumably the compiler will optimise away this "if" statement because it doesn't do anything. So my question is what should I put within the "if" statement to to make sure it gets compiled in to something... or should I be tracing the x==273 case in some completely different way.

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• Anonymous iterators blocks in Clojure?

  - by Checkers

  I am using clojure.contrib.sql to fetch some records from an SQLite database. (defn read-all-foo [] (let [sql "select * from foo"] (with-connection *db* (with-query-results res [sql] (into [] res))))) Now, I don't really want to realize the whole sequence before returning from the function (i.e. I want to keep it lazy), but if I return res directly or wrap it some kind of lazy wrapper (for example I want to make a certain map transformation on result sequence), SQL bindings will be gone after I return, so realizing the sequence will throw an error. How can I enclose the whole function in a closure and return a kind of anonymous iterator block (like yield in C# or Python)? Or is there another way to return a lazy sequence from this function?

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• Get variable name as string in Perl

  - by Jose Cuervo

  Hi, I am trying to get a text representation of a variable's name. For instance, this would be the function I am looking for: $abc = '123'; $var_name = &get_var_name($abc); #returns '$abc' I want this because I am trying to write a debug function that recursively outputs the contents of a passed variable, I want it to output the variable's name before hand so if I call this debug function 100 times in succession there will be no confusion as to which variable I am looking at in the output. I have heard of Data::Dumper and am not a fan. If someone can tell me how to if it's possible get a string of a variable's name, that would be great. Thanks!

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• Is Jquery $(this) broken by jqgrid gridunload method?

  - by chohi

  I expect the following code to unload a javascipt jqgrid, then load another grid with different options, including different columns //onload (function($) $.fn.myGridFn = function(options){ $(this).jqGrid('GridUnload'); $(this).jqGrid(options.gridoptions); //.... $('#select').change(function(){ switch($(this).val()) { case 'grid1': $('#grid').myGridFn({gridoptions:{/*grid1 options*/}}); break; case 'grid2': $('#grid').myGridFn({gridoptions:{/*grid2 options*/}}); break; } }); })(jQuery); //... <table id="grid"></table> What I get is the grid unloading, then I have to change the selection in the select element and back again to load the new grid. Updated: If I replace the $(this) in the plugin with the actual element selector $('#grid') - it works just fine, I cant do this in my real app because the plugin is used by several other table elements and grids

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• Does JSLint parse DOM functions?

  - by Paul

  I tried to use the parse() function of JSLint to parse three pieces of JavaScript code: function(b, c){var a = b + c; return a; } window.addEventListener('click', click_hanlder, true); document.documentElement.innerHTML; Here's the code, which is copied and pasted from the JSLint self-parse example: ` try { parse = make_parse(); var source = "something to parse";//replaced by the code above tree = parse(source); if (tree) { document.write(JSON.stringify(tree, ['key', 'name', 'message', 'value', 'arity', 'first', 'second', 'third', 'fourth'], 4)); } } catch (e) { document.write(JSON.stringify(e, ['name', 'message', 'from', 'to', 'key', 'value', 'arity', 'first', 'second', 'third', 'fourth'], 4)); } ` The output: returns a correct tree. returns a tree with only one node of "window". crashes the browser. I'm wondering whether JSLint doesn't support DOM function.

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• Detecting extended mousedown event on iPhone

  - by Alan Neal

  I want to detect an extended mousedown. The following code works in Firefox and Safari... var mousedownTimeout; $('#testButton').mousedown(function(){ mousedownTimeout = window.setTimeout(function(){ alert("Hey, let go."); }, 2000); }); $('#testButton').mouseup(function(){ window.clearTimeout(mousedownTimeout); }); ... but not on the iPhone because (quoting quirksmore.org)... The iPhone fires the mousedown, mouseup and click events in the correct order on a click (tap), but it either fires all three or none at all. Is there a way around this?

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• jQuer image hover animate

  - by Ryan Max

  Hello. I have the following jQuery script that makes an orange transparent hover effect cover the image when it's rolled over. How do I make it so this script will animate in and out (with a fade?) $(document).ready(function() { $('#gallery a').bind('mouseover', function(){ $(this).parent('li').css({position:'relative'}); var img = $(this).children('img'); $('<div />').text(' ').css({ 'height': img.height(), 'width': img.width(), 'background-color': 'orange', 'position': 'absolute', 'top': 0, 'left': 0, 'opacity': 0.5 }).bind('mouseout', function(){ $(this).remove(); }).insertAfter(this); }); });

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• ajax call is looping indefinitely

  - by zurna

  I am pulling categories from an xml file. I only have 5 categories but the code below keeps pulling categories indifitely! Weird thing, I dont even have a loop in the xml function. Test link: http://www.refinethetaste.com/FLPM/ $.ajax({ dataType: "xml", url: "/FLPM/content/home/index.cs.asp?Process=ViewVCategories", success: function(xml) { $(xml).find('row').each(function(){ var id = $(this).attr('id'); var CategoryName = $(this).find('CategoryName'); $("<div class='tab fleft'><a href='http://www.refinethetaste.com/FLPM/content/home/index.cs.asp?Process=ViewVideos&CATEGORYID="+ id +"'>"+ CategoryName.text() + "</a></div>").appendTo("#VCategories"); CategoryName.find("div.row-title .red").tabs("div.panes > div"); }); } });

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• Jquery disable link for 5 seconds

  - by John

  I have this code: $('#page-refresh').click( function() { $.ajax({ url: "/page1.php", cache: false, dataType: "html", success: function(data) { $('#pagelist').html(data); } }); return false; }); In this code is it possible that on the ajax success function it disables the #page-refresh click for 5 seconds then re-enable it? Basically if a person clicks the button and this action happens I dont want them to click and run this action again for another 5 seconds. I looked at delay() to unbind the click for this then bind it again but once it unbinded it never allowed me to click the button anymore.

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• VBScript: how to set values from recordset to string

  - by phill

  This is probably a beginner question, but how do you set a recordset to a string variable? Here is my code: Function getOffice (strname, uname) strEmail = uname WScript.Echo "email: " & strEmail Dim objRoot : Set objRoot = GetObject("LDAP://RootDSE") Dim objDomain : Set objDomain = GetObject("LDAP://" & objRoot.Get("defaultNamingContext")) Dim cn : Set cn = CreateObject("ADODB.Connection") Dim cmd : Set cmd = CreateObject("ADODB.Command") cn.Provider = "ADsDSOObject" cn.Open "Active Directory Provider" Set cmd.ActiveConnection = cn cmd.CommandText = "SELECT physicalDeliveryOfficeName FROM '" & objDomain.ADsPath & "' WHERE mail='" & strEmail & "'" cmd.Properties("Page Size") = 1 cmd.Properties("Timeout") = 300 cmd.Properties("Searchscope") = ADS_SCOPE_SUBTREE Dim objRS : Set objRS = cmd.Execute WScript.Echo objRS.Fields(0) Set cmd = Nothing Set cn = Nothing Set objDomain = Nothing Set objRoot = Nothing Dim arStore Set getOffice = objRS.Fields(0) Set objRS = Nothing End function When I try to run the function, it throws an error "vbscript runtime error: Type mismatch" I presume this means it can't set the string variable with a recordset value. How do I fix this problem?

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• Capacity Planner errors

  - by Gabrie

  Hi Performing a discovery at customer site and although systems do get discovered, I get a lot (100000+) of these errors in the log: 02/01/2010 10:45:48:1:2200: Module = vcpDiscover Function = GetObfuscatedName Source = vcpDiscover Error = Method '~' of object '~' failed(-2147467259:0:5003251) 02/01/2010 10:45:48:1:2200: Module = vcpDiscover Function = GetObfuscatedName Source = vcpDiscover Error = Method '~' of object '~' failed(-2147467259:0:5003251) Any tips? Using latest version, just downloaded it. Gabrie

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• problem in reading textbox value in li

  - by user269431

  I have a ul as follows: It can`t read the text values neither with val() nor text(). Can anyone help please <ul id="mylist"> <li id="1"><input type = "text" value= "aaaaa" /></li> <li id="2"><input type = "text" value= "bbbb" /></li> <li id="3"><input type = "text" value= "ccc" /></li> <li id="5"><input type = "text" value= "dddd" /></li> </ul><button id="Button1">Add Another2</button> var values = []; $(document).ready(function() { $("#Button1").click(function() { $( "#mylist li text").each(function() { alert($(this).text()); values.push($(this).text()); }); }); });

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• angularjs model view update through angular directive

  - by Relicset

  I am trying to update my view using model in angular directive here is the directive I have created app.directive('aboutOptions', [function() { return { restrict: 'C', scope: { testing: '=' }, transclude: true, link: function(scope, elem, attr) { scope.$watch(attr.ngModel, function() { console.log(scope.$eval(attr.ngModel)); scope.testing = scope.$eval(attr.ngModel); }); } } }]); here is html model and file name is ab.html <input type="text" class="about-options" ng-model="testing" /> Here is the view to be updated and file name is show.html <h2 class="about-options">{{testing}}</h2> ab.html file will be loaded as a template inside jquery ui dialog and my show.html file is in main page If I remove scope: { testing: '=' }, Console is showing what I am typing Update - 1 Tried with the following changes testing: '=test' And in html <input type="text" class="about-options" ng-model="testing" /> <h2 class="about-options">{{test}}</h2>

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• Full Calender in JQUERY using webservices in Asp.Net

  - by inkmca

  hi, this is My code it works fine for getting data and parsing but i am unable to get events displayed ..... please let me know possible reason very urgent, i feel callback(evnt) not working here............. events: function(callback) { $.ajax({ type: "POST", url: "WebService.asmx/hello", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(data) { var evnt = []; $(data.d).find('event').each(function() { evnt.push({ // title: $(this).attr('title'), // start: $(this).attr('start'), // end: $(this).attr('end') title: 'Events1', start: '2010-04-01', end: '2010-04-10' }); }); alert('called end'); callback(evnt); }, error: OnError }); }

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• How does R treat positional arguments

  - by inspectorG4dget

  I'm a python guy and very new to R (so far, all I've done is copy-paste code and screen-shot the resulting, graph). I would now like to actually learn the language so that I can draw useful plots (right now, I am trying to plot this). In attempting my first plot, I came across this function call: sets_options("universe", seq(from = 0, to = 25, by = 0.1)) Now, I would like to know if I can achieve the same result by calling sets_options("universe", seq(0, 25, 0.1)) The help page for seq doesn't speak to this specifically (or I'm not reading it correctly), so I was hoping someone could shed some light on how R handles positional arguments I tried calling the function that way in R and it worked (no syntax errors, etc), but I don't know how to test the output of that function, so I'm forced to ask here

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• JavaScript, transform object into array

  - by Šime Vidas

  I've got an object: var obj = { "Mike": 24, "Peter": 23, "Simon": 33, "Tom": 12, "Frank": 31 }; I want to create an array that holds the values of the object. The keys (key names) can be disregarded: [24, 23, 33, 12, 31] The order of the values is NOT important! One solution (obviously) would be do have a function that takes the values and puts them into an array: var arr = valuesToArray(obj); I will accept such a function as the answer. However, I would be more pleased if there would be an API function (ECMAScript, jQuery, browser-specific, ...) that could do this. Is there such a thing?

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• How can I safely decide if a variable is a string of more than one characters?

  - by Alan

  I am using the following Javascript: if (typeof content !== 'undefined' && content.length > 0) { $state.transitionTo('admin.content', { content: content }) } I thought this was safe to use but it gives me an error saying: TypeError: Cannot read property 'length' of null I am using the following function to decide if something is a number: isNumber: function (num) { // Return false if num is null or an empty string if (num === null || (typeof num === "string" && num.length === 0)) { return false; } var rtn = !isNaN(num) return rtn; }, How can I write a similar function that would very safely determine if something is a string with a length of more than 0?

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• Haskell Write Computation result to file

  - by peterwkc

  Hello to all, i have function which create a tuple after computation but i would like to write it to file. I know how to write file using writeFile but did not know how to combine computation and monads IO together in the type signature This is my code. invest :: ([Char]->Int->Int->([Char], Int) ) -> [Char]->Int->Int->([Char], Int) invest myinvest x y = myinvest x y myinvest :: [Char]->Int->Int->([Char], Int) myinvest w x y | y > 0 = (w, x + y) | otherwise = error "Invest amount must greater than zero" where I have a function which computes the maximum value from list but i want to these function receive input from file then perform the computation of maximum value. maximuminvest :: (Ord a) => [a] -> a maximuminvest [] = error "Empty Invest Amount List" maximuminvest [x] = x maximuminvest (x:xs) | x > maxTail = x | otherwise = maxTail where maxTail = maximuminvest xs Please help. Thanks.

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• Camera Stream in Flash Problem

  - by Peter

  Please help me fill the question marks. I want to get a feed from my camera and to pass it to the receive function. Also in flash builder(in design mode) how do I put elements so they can play a camera feed?? Because as it seems VideoDisplay just doesn't work public function receive(???:???):void{ //othercam is a graphic element(VideoDisplay) othercam.??? = ????; } private function send():void{ var mycam:Camera = Camera.getCamera(); //mycam2.attachCamera(mycam); //sendstr is a stream we send sendstr.attachCamera(mycam); //we pass mycam into receive sendstr.send("receive",mycam); }

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• Changing A Different Class Display on Hover with Jquery

  - by John K

  Ok, here's what I'm trying to do. I have a DIV box with a child element set with DISPLAY: NONE;. I'm trying to use Jquery so that when the mouse enters the parent DIV box, the child element is made visible, and then hides when the mouse leaves the parent DV. There will be multiple divs on the page with these classes. For some reason it's not working. Any ideas? Here's my code: HTML: <div class="parent"> <span class="handle" style="display: none;">My Handle</span> <p>Child Text</p> </div> Javascript: $(document).ready(function () { $('.parent').mouseenter(function(){ $(this).next('.handle').show(); }); $('.parent').mouseleave(function(){ $(this).next('.handle').hide(); }); })

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• C++: How would I get unix time?

  - by John D.

  I need a function or way to get the UNIX epoch in seconds, much like how I can in PHP using the time function. I can't find any method except the time() in ctime which seems to only output a formatted date, or the clock() function which has seconds but seems to always be a multiple of 1 million, nothing with any resolution. I wish to measure execution time in a program, I just wanted to calculate the diff between start and end; how would a C++ programmer do this? EDIT: time() and difftime only allow resolution by seconds, not ms or anything too btw.

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• MS Access "#Name?" in unbound field on SOME machines

  - by alkorya

  I have a datasheet form bound to table. I added 2 unbound fields and set their Control Source properties to user defined VBA functions: 1. ConcatRelated (http://allenbrowne.com/func-concat.html) 2. Custom function that returns a string: Public Function GetLowestSatatus(LookupField As String, JSAID As Integer) As String On Error Resume Next GetLowestSatatus = DLookup(LookupField, "JsaStatuses", "ID=" & DMin("StatusID", "Tasks", "JSAID =" & JSAID)) End Function It works fine on my and some other machines but there are machines I got "#Name?" in these 2 unbound fields. All machines configured identically. Any ideas? Thank you!

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• Interrupting `while loop` with keyboard in Cython

  - by linello

  I want to be able to interrupt a long function with cython, using the usual CTRL+C interrupt command. My C++ long function is repeatedly called inside a while loop from Cython code, but I want to be able, during the loop, to send an "interrupt" and block the while loop. The interrupt also should wait the longFunction() to finish, so that no data are lost or kept in unknown status. This is one of my first implementation, which obviously doesn't work: computed=0; print "Computing long function..." while ( computed==0 ): try: computed = self.thisptr.aLongFunction() except (KeyboardInterrupt, SystemExit): computed=1 print '\n! Received keyboard interrupt.\n' break; (p.s. self.thisptr is the pointer to the current class which implements aLongFunction() )

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