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  • Calculating co-ordinate of a point on a path given a distance

    - by Alex
    I'm working on a project that surveys the condition of a road or highway using a calibrated trip computer connected to a rugged-PC. An operator keys in defect codes as they travel along a pre-defined route. I need to show an indicator on the map screen that shows the vehicles current position, taking into account the distance data from the trip computer. I know the exact lat lon co-ordinates at the starting point of each section of road, and the road is made up of a series of points. The question is: how can I calculate the lat lon co-ordinates of the vehicle assuming that it has continued on the route and traveled a certain distance (e.g. 1.4km). The co-ordinates would be 'locked onto' the road line, as shown in blue on the diagram below. Thanks, Alex

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  • Objective-C : enum like Java (int values and many others for each enum)

    - by Oliver
    In Java, you can make an enum having multiples values. In objective-C, this cannot be done easily. I've read many pages about this but I didn't found anything satisfying that would allow me to use enums by a simple way and to keep the enum declaration and their different values in the same file. I would like to write something like this in a enums.h : // ======================================== typedef enum {eRED, eGREEN, eBLUE} ColorEnum; int colorValues[] = { 0xFF0000, 0x00FF00, 0x0000FF }; NSArray *colorNames = [NSArray arrayWithObjects:@"Red color", @"light green", @"Deep blue", nil]; // ======================================== and be able to use thoses global variables to manage my stuff anywhere like : int color = colorValues[eRED]; But I don't know how to write this. I have compile errors like "ColorValues" is defines many times. Or if I just use "static", I have many "ColorValues" not used in .m file... Could you help me ?

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  • Prevent status bar from receiving touch events

    - by Typeoneerror
    Edit After further testing, it appears that the part of my button that are not clickable are where the status bar used to be. I'm hiding the status bar with : // -- Override point for customization after app launch [[UIApplication sharedApplication] setStatusBarHidden:YES]; But it's still receiving touches. Any idea on how to disable this? Is there's a bounding box on an application that receives touch events? I created a few sample round rect buttons and placed them in different places in my view. The ones in the center of the view receive touch events (and show the highlighted blue color) but if I place a button near the edges of the view, only parts of them are clickable in the simulator. Is this because of Apples style guidelines? I placed a button exactly where a UITabNavigationItem would appear and only the bottom half of it is clickable.

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  • class on td is causing tr not to respond

    - by Catfish
    I have this script and the rows that have td class "odd" will not toggle the blue color that the rows without the class "odd" do. anybody know why? //Used to make a row turn blue if available $('tr:not(theadtr)').toggle(function() { $(this).addClass("hltclick"); }, function() { $(this).removeClass("hltclick"); }); and this table <table> <thead> <tr class="border"> <td>Start Time</td> <td>End Time</td> </tr> </thead> <tbody> <tr class="border"> <td class="odd"><a href="#">7:00am</a></td> <td class="odd"><a href="#">8:00am</a></td> </tr> <tr class="border"> <td><a href="#">8:00am</a></td> <td><a href="#">9:00am</a></td> </tr> <tr class="border"> <td class="odd"><a href="#">9:00am</a></td> <td class="odd"><a href="#">10:00am</a></td> </tr> <tr class="border"> <td><a href="#">10:00am</a></td> <td><a href="#">11:00am</a></td> </tr> <tr class="border"> <td class="odd"><a href="#">11:00am</a></td> <td class="odd"><a href="#">12:00pm</a></td> </tr> <tr class="border"> <td><a href="#">1:00pm</a></td> <td><a href="#">2:00pm</a></td> </tr> <tr class="border"> <td class="odd"><a href="#">2:00pm</a></td> <td class="odd"><a href="#">3:00pm</a></td> </tr> <tr class="border"> <td><a href="#">3:00pm</a></td> <td><a href="#">4:00pm</a></td> </tr> <tr class="border"> <td class="odd"><a href="#">4:00pm</a></td> <td class="odd"><a href="#">5:00pm</a></td> </tr> </tbody> </table> and this css #calendar { -moz-border-radius-bottomleft:6px; -moz-border-radius-bottomright:6px; padding:15px; clear:both; padding:15px; } body { color:#222222; font-family:sans-serif; font-size:12px; } table { border:1px solid white; border-collapse:collapse; margin:0 0 30px; width:100%; } .border { border:1px solid #333134; } thead tr { background:none repeat scroll 0 0 #B7EBFF; color:#333134; font-size:24px; font-weight:bold; } tr { background:none repeat scroll 0 0 #616062; font-size:16px; } thead td { font-family:"Century Gothic",Arial; padding:5px 0 20px 5px; } tr.border thead tr { color:#333134; font-size:24px; font-weight:bold; } tr { font-size:16px; }

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  • Drawing a continuous rectangle

    - by JAYMIN
    Hi..i m currently working on visual c++ 2008 express edition.. in my project i have a picturebox which contains an image, now i have to draw a rectangle to enaable the user to select a part of the image.. I have used the "MouseDown" event of the picturebox and the below code to draw a rectangle: Void pictureBox1_MouseDown(System::Object^ sender, Windows::Forms::MouseEventArgs^ e) { Graphics^ g = pictureBox1-CreateGraphics(); Pen^ pen = gcnew Pen(Color::Blue); g-DrawRectangle( pen , e-X ,e-Y,width,ht); } now in the "DrawRectangle" the arguments "width" and "ht" are static, so the above code results in the drawing of a rectangle at the point where the user presses the mouse button on the image in picturebox... i want to allow the user to be able to drag the cursor and draw a rectangle of size that he wishes to.. Plz help me on this.. Thanx..

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  • div's height like remaining height

    - by Erick
    i have two div <div id="uno"> text </div> <div id="due"> text </div> div#uno{ width:300px; height: 100px; border: 1px solid blue; overflow:hidden; } div#due{ width:300px; height: 200px; border: 1px solid yellow; overflow:scroll; } how can i have the height of the div id="due" equal to the remaining height of the page?

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  • Getting Windows XP colours in .NET

    - by LauraM
    I am trying to get a specific colour used by Windows XP in my .NET application. In Windows XP, if you go the Control Panel in 'category view', on the left hand side you have some 'See Also' options (Windows Update, Help and Support, Other Control Panel Options). The colour I'm trying to get is the light blue background colour shown behind these options. I don't need the hex/RGB value of the colour, as it can change depending on the style settings used on the desktop. My question is - is it possible to programmatically get hold of this colour in a .NET app? The colour doesn't appear to be in SystemColors, although it's very similar to SystemColors.InactiveCaptionText (and I think I can probably get away with using this). I'm just wondering if there is a way to get hold of the exact colour.

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  • CSS border and the :hover dynamic pseudo-class

    - by dbasch
    Hi All, I have built a persistent dropline menu with two levels using only CSS. It is pretty standard. It is a nested set of UL's and the UL's :hover state is what shows and hides the sub menu levels. Something like this: | *Pets* | Colors | Cars | | Cats | Dogs | Birds| Goats | Sheep | | Pets | *Colors* | Cars | | Red | Orange | Green | Blue| Yellow | I then added a 1px border at the bottom of the first level UL element. Like this: | *Pets* | Colors | Cars | -------------------------------------- | Cats | Dogs | Birds| Goats | Sheep | When I hover over a first level item (Pets), and then move the mouse down to the second level (Cats), the entire second level disappears. I finally figured out that the UL's 1px border is not included in the hover area for the UL. Can I add a border to the bottom of a dropline menu level without messing up the menu hovering? Thanks!

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  • Mac dashboard widgets not loading external images

    - by andrhamm
    I set out to make a quick Mac OS X dashboard widget. I read the documentation and was pleased to find out they use simple HTML, JS, and CSS. I created my widget and it works when I open the .html file in Firefox, but it does not work when I install the widget to the dashboard. The widget is simple: it displays the most recent image from a weather web cam stream. The image URLs look like this: http://webcam.com/stream.jpg?1274213999617. The timestamp is appended to the URL and the server automatically responds with the latest image for that time. I did not write the server script. The widget appears to be loading correctly, but the web cam image will not load. Notice the blue question mark in the upper left. The image should appear over the square background image. Is there any special procedure for loading external images into a widget?

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  • Change color of text within a RichTextBox in C#

    - by Addie
    I have a RichTextBox that I write a string to every time I click a Form button. The string ends with a newline so each time I add a string, it appends to the bottom of the RichTextBox. Each string begins with the string "Long" or "Short" and ends with Environment.NewLine. I'd like to color each line red if it beings with "Long" and blue if it begins with "Short". How can I do this? If you need further clarification of the question comment below.

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  • iPhone switch statement using enum

    - by Boris
    I have defined an enum in a header file of a class : typedef enum{ RED = 0, BLUE, Green } Colors; - (void) switchTest:(Colors)testColor; and in the implementation file I have : - (void) switchTest:(Colors)testColor{ if(testColor == RED){ NSLog(@"Red selected"); } switch(testColor){ case RED: NSLog(@"Red selected again !"); break; default: NSLog(@"default selected"); break; } } My code compiles correctly without warrnings. When calling the switchTest method with RED, the output is : "Red selected" but once the first line of the switch runs, the application quits unexpectedly and without warrnings/errors. I don't mind using if/else syntax but I would like to understand my mistake.

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  • Eidetic memory: What magic numbers you still remember?

    - by Hao
    Long before you practice writing readable code, what "magic numbers" you still remember up to this day? here's some of my list: 72 80 75 77 13 32 27 - up down left right enter space escape 1 2 4 128 - blue green red blink 67h 33h 17h - interrupt for EMS, mouse, printer function AH 9, interrupt 21 alt+219 for block ASCII alt+164 ñ 90 NOP 13 10 carriage return, line feed ascii 1 and 2 face, ascii 3 heart. no not this heart: <3 :-) debug -o72,10 -o71,12 clears the BIOS password. I don't know what those numbers mean, it's like a trade secret that gets shared with each other during college days. ascii 7 sounds a beep P.S. Somehow, remembering some of these magic numbers can help you in some tech problems, your keyboard is broken, the office pal's keyboard doesn't have accented characters. An anecdote, during college, one of my friend asked me how to remove the newlines in his Word document. Not having used Word so much then, I somehow "intuitively" guessed to find ^013 and replace it with blank. Well it works :-)

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  • How to make IE 9 Standards Mode the default mode?

    - by Evik James
    I have a web site that works perfectly fine in IE9 when compatibility mode is turned OFF (the compatibility symbol is gray). When compatibility mode is turned on (blue), the jQuery doesn't work at all. I have added the following tag to the site to tell the browser that compatibility mode should NOT be used. <meta http-equiv="X-UA-Compatible" content="IE=Edge" > I have the doctype as this: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Still, the browser doesn't seem to default to standard mode and the user must manually ensure that they are NOT in compatibility mode. Can I disable IE 9 Compatibility Mode? Have I done what I need to do to disable IE 9 Compatibility Mode? Can the user always override IE 9 Standards Mode?

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  • Class as an Event Observer

    - by emi
    I want to do something like this... var Color = Class.create({ initialize: function() { this._color = "white"; this.observe("evt: colorChanged", this.colorChanged.bind(this)); }, changeColor: function(color) { this._color = color; this.fire("evt: colorChanged"); }, colorChanged: function(event) { alert("You change my color!"); } }); var a = new Color().changeColor("blue"); Why the colorChange custom event will never be dispatched and I need to use, instead of this, a DOM element like document.observe? In my code I'd like to know which class dispatches the event using event.target and I can't if I must use document or some other DOM element. :( I've been working in Actionscript 3 and that's the methodology I learned to work with custom events in classes. What about Javascript?

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  • DataBinding to GridView

    - by liran
    Hello, I Have a gridview object and i want to bind it to Object.. My Object is namespace DataBinding { public class BindingObject { public ColorInfo Color { get; set; } public string Name { get; set; } public struct ColorInfo { public string Red { get; set; } public string Green { get; set; } public string Blue { get; set; } } } } I want that in the gridview i will see only the Name Property And Red property.. Now when i bound it my gridview see like this: Color column and Name Column and i want Red column and Name Column.. How i do this.. Thanks..

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  • javafx 2, CSS and focus disappearing

    - by AgostinoX
    I've created a very simple CSS that styles two buttons. To the first has just been added a padding. To the second has been set the -fx-background-color, but the value is taken from caspian.css, that is the value it should have before it had been set. .first-style { -fx-padding: 20 5 1 5; } .second-style { -fx-background-color: -fx-shadow-highlight-color, -fx-outer-border, -fx-inner-border, -fx-body-color; } At this point i experience a strange behavior: the focus decoration stops working, and the second button doesn't get its blue border when focused. What's happening?

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  • Opacity in CSS, some doubts

    - by André
    Hi, I have some doubts with opacity in CSS. I have a Header and a Footer that uses opacity, but I would like to turn off opacity the opacity in the text. Is that possible? To a better understanding I will post the code. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title> stu nicholls | CSS PLaY | cross browser fixed header/footer layout basic method </title> <style type="text/css" media="screen"> #printhead {display:none;} html { height:100%; max-height:100%; padding:0; margin:0; border:0; background:#fff; font-size:80%; font-family: "trebuchet ms", tahoma, verdana, arial, sans-serif; /* hide overflow:hidden from IE5/Mac */ /* \*/ overflow: hidden; /* */ } body {height:100%; max-height:100%; overflow:hidden; padding:0; margin:0; border:0;} #content {display:block; height:100%; max-height:100%; overflow:hidden; padding-left:0px; position:relative; z-index:3; word-wrap:break-word;} #head {position:absolute; margin:0; top:0; right:18px; display:block; width:100%; height:1; background-color:transparent; font-size:1em; z-index:5; color:#000; border-bottom:1px solid #000;} #foot {position:absolute; margin:0; bottom:-1px; right:18px; display:block; width:100%; height:30px; background-color:transparent; color:#000; text-align:right; font-size:2em; z-index:4; border-top:1px solid #000;} .pad1 {display:block; width:18px; height:18px; float:left;} /* Com este "height", alinho a border do header */ .pad2 {display:block; height:100px;} .pad3 {display:block; height:0px;} /* Com este "height" controlo onde começa o content e o scroll do browser */ #content p {padding:5px;} .bold {font-size:1.2em; font-weight:bold;} .red {color:#c00; margin-left:5px; font-family:"trebuchet ms", "trebuchet", "verdana", sans-serif;} h2 {margin-left:5px;} h3 {margin-left:5px;} /* Esta classe controla as caracteristicas do background do footer e do header. */ .bkg { background-color: blue; filter:alpha(opacity=35); /* IE's opacity*/ opacity: 0.35; height: 10; } iframe { border-style: none; width: 100%; height: 100%; } </style> </head> <body> <div id="head"> <div class="bkg"> <div class="pad1"></div>Header </div> </div> <div id="content"> <div class="pad3"></div> <iframe src="http://www.yahoo.com" id="iFrame"></iframe> <div class="pad2"></div> </div> </div> <div id="foot"><div class="bkg">Footer</div></div> </body> </html> I want to maintain the opacity in the blue color in the footer and header but I would like to put the text stronger. Is that possible? Best Regards,

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  • How does Bitmap.Save(Stream, ImageFormat) format the data?

    - by Matt Jacobsen
    I have a non transparent, colour bitmap with length 2480 and width 3507. Using Bitmap.GetPixel(int x, int y) I am able to get the colour information of each pixel in the bitmap. If I squirt the bitmap into a byte[]: MemoryStream ms = new MemoryStream(); bmp.Save(ms, ImageFormat.Bmp); ms.Position = 0; byte[] bytes = ms.ToArray(); then I'd expect to have the same information, i.e. I can go to bytes[1000] and read the colour information for that pixel. It turns out that my array of bytes is larger than I anticipated. I thought I'd get an array with 2480 x 3507 = 8697360 elements. Instead I get an array with 8698438 elements - some sort of header I presume. In what format the bytes in my array stored? Is there a header 1078 bytes long followed by Alpha, Red, Green, Blue values for every byte element, or something else?

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  • HTML5 svg not working

    - by 01010011
    Hi, I'm using Chrome version 5.0.375.55 and Firefox version 3.5.9 but I can't get the HTML5 code below to display a box. <!DOCTYPE html> <!-- this tells browser, this is HTML5 --> <html> <body> <svg width="200" height="200"> <rect x="0" y="0" width="100" height="100" fill="blue" stroke="red" stroke-width="5px" rx="8" ry="8" id="myRect" class="chart" /> </svg> </body> </html> The following sites stated that my browsers support HTML5 and svg so what gives? http://caniuse.com/ http://www.html5test.com/

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  • Qt: Printing pageRect and paperRect issues

    - by Pavels
    I have following printing code: void Print(QPrinter *printer) { QPainter q(printer); q.setRenderHint(QPainter::HighQualityAntialiasing, true); q.setPen(QPen(QColor("red"))); q.drawRect(printer->pageRect()); q.drawLine(printer->pageRect().topRight(), printer->pageRect().bottomLeft()); q.setPen(QPen(QColor("blue"))); q.drawRect(printer->paperRect()); q.drawLine(printer->paperRect().topRight(), printer->paperRect().bottomLeft()); } The result is different with QPrintPreviewDialog, rendered PDF, output to printers (HP LaserJet, PdfFactory, PdfCreator). Most of time the resulting rectangle is out of paper. What to do so the output is similar to all printers?

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  • PHP + GD: imagetruecolortopalette not keeping transparency

    - by AlexMax
    I am using GD to output an image that is a truecolor+alpha channel PNG file using imagepng just fine. However, I would like to have the ability to also output an ie6-compatible 256-color PNG as well. According to the official documentation for imagetruecolortopalette: The code has been modified to preserve as much alpha channel information as possible in the resulting palette, in addition to preserving colors as well as possible. However, I am finding that the results of this function do not properly preserve any transparency at all. I used this firefox image with text superimposed on top of it as a test, and all the function did was give me a white background and a weird dark blue border. I know that I can't hope to preserve the full alpha channel, but surely this function would at least pick up on the transparent background. Is there something I'm missing? Are there any alternative approaches that I can take?

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  • cross-user C# mutex

    - by Martin
    My app is forced to use a 3rd party module which will blue-screen Windows if two instances are started at the same time on the same machine. To work around the issue, my C# app has a mutex: static Mutex mutex = new Mutex(true, "{MyApp_b9d19f99-b83e-4755-9b11-d204dbd6d096}"); And I check if it's present - and if so I show an error message and close the app: bool IsAnotherInstanceRunning() { if (mutex.WaitOne(TimeSpan.Zero, true)) return (true); else return (false); } The problem is if two users can log in and open the application at the same time, and IsAnotherInstanceRunning() will return false. How do I get around this?

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  • changing button tag border color

    - by rashmi
    dear all, i have loaded image in border less button tag when button is selected with tab key i get brown color rectangle around image. how do i change color of that rectangle from brown to white. and is that possible to have white rectangle with inner and outer shadow of rectangle with blue. please help. here is my code snippet. <td align=center valign=middle > <figure> <button style="background-color:black; height:160px;width:160px ; border:none"><img src="F:\rashmi\icons_tv\Help_Normal.png" > </button> <figcaption><font size="5" color="white" style="font-weight:bold"><center>help</center></font></figcaption> </figure> </td>

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  • remove/unbind hover on anchors...

    - by Reigel
    html <a href="home.html">Home</a> css a { color: blue; } a:hover { color: red; } now as you can see <a> now would be color red on hover. Question How do I remove hover via jQuery? I have tried: $('a').unbind('hover'); and $('a').unbind('mouseenter mouseleave') I come to think why it won't work, is this not hover()? Please enlighten me... thanks

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  • How do I draw an ESB on a SoaML diagram?

    - by dave
    I've recently had to draw some architectural diagrams that feature the use of an Enterprise Service Bus. The ESB is critical, so everyone wants it to show up on the diagram. But since it's the center of what everything is connected to, it really of gets in the way. I settled on trying to use SoaML. I color-coded the request points blue and service points green, to help then stand out. The text names on the ports give you a sense of what talks to what, and it's incredibly obvious that everything goes through the ESB. Can anyone comment on my approach? Any suggestions on something better?

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