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  • Customising the .NET PrintPreviewDialog?

    - by Gary Willoughby
    Currently i'm using the PrintPreviewDialog to open a window to preview the printed pages before they are sent to a printer. The problem is though that it first appears very small, at the top left of the screen and the buttons are too small. Is there anyway i can set a starting size for this dialog or start position or even make the little buttons a little bigger? Or do i need to implement my own?

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  • resizing an array with C

    - by Gary
    So I need to have an array of structs in a game I'm making - but I don't want to limit the array to a fixed size. I'm told there is a way to use realloc to make the array bigger when it needs to, but can't find any working examples of this. Could someone please show me how to do this? Thanks!

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  • Designing a database file format

    - by RoliSoft
    I would like to design my own database engine for educational purposes, for the time being. Designing a binary file format is not hard nor the question, I've done it in the past, but while designing a database file format, I have come across a very important question: How to handle the deletion of an item? So far, I've thought of the following two options: Each item will have a "deleted" bit which is set to 1 upon deletion. Pro: relatively fast. Con: potentially sensitive data will remain in the file. 0x00 out the whole item upon deletion. Pro: potentially sensitive data will be removed from the file. Con: relatively slow. Recreating the whole database. Pro: no empty blocks which makes the follow-up question void. Con: it's a really good idea to overwrite the whole 4 GB database file because a user corrected a typo. I will sell this method to Twitter ASAP! Now let's say you already have a few empty blocks in your database (deleted items). The follow-up question is how to handle the insertion of a new item? Append the item to the end of the file. Pro: fastest possible. Con: file will get huge because of all the empty blocks that remain because deleted items aren't actually deleted. Search for an empty block exactly the size of the one you're inserting. Pro: may get rid of some blocks. Con: you may end up scanning the whole file at each insert only to find out it's very unlikely to come across a perfectly fitting empty block. Find the first empty block which is equal or larger than the item you're inserting. Pro: you probably won't end up scanning the whole file, as you will find an empty block somewhere mid-way; this will keep the file size relatively low. Con: there will still be lots of leftover 0x00 bytes at the end of items which were inserted into bigger empty blocks than they are. Rigth now, I think the first deletion method and the last insertion method are probably the "best" mix, but they would still have their own small issues. Alternatively, the first insertion method and scheduled full database recreation. (Probably not a good idea when working with really large databases. Also, each small update in that method will clone the whole item to the end of the file, thus accelerating file growth at a potentially insane rate.) Unless there is a way of deleting/inserting blocks from/to the middle of the file in a file-system approved way, what's the best way to do this? More importantly, how do databases currently used in production usually handle this?

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  • C#: Whats is the best way to print multiple images?

    - by Murat
    Have a good day, I need to print a large image collection of pictures. If I use something like: printDocument.PrintPage += OnPrintPage; printDocument.Print(); my printing task size in printer queue takes more than 1 GB!. Does abybody suggest how can I print images one by one. Maybe some event like PrintJobIsFinished is available? Thanks for any help. -- Best Regards, Murat

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  • How to unescape String in Rails

    - by Midday
    I have a long String from a WYSIWYG (in my case YUI) which I then send as html email. since its an email all CSS needs to be inline so how should i unescape this: <span style=\"color: #c00000; font-size: 14px;\"> Is .gsub '\"' , '"' enough?

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  • Why does Python Array Module Process Strings and Lists Differently?

    - by Casey
    I'm having trouble understanding the result of the following statements: >>> from array import array >>> array('L',[0xff,0xff,0xff,0xff]) array('L', [255L, 255L, 255L, 255L]) >>> from array import array >>> array('L','\xff\xff\xff\xff') Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: string length not a multiple of item size

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  • Facebook like button not going back side on the fixed div

    - by Lahiru Chathuranga
    I added a Facebook like button to my website.My website has a fixed div on top of the page(blue color div in the image). The like button is below that(in a div which can scroll) My problem is when the page is scroll down the like button comes on top of the fixed div(blue color).I want to scroll it from the backside of the div.How can I do that? There are couple of screenshots I added Before Scroll After Scroll Here is my code of the fixed div <script type="text/javascript"> function got_to_signup(){ window.location.href = "view/policy"; } </script> <div id="fb-root"></div> <script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1&appId=368003049941951"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));</script> <div style="width:100%;background-color:#0094d6;" > <div id="dd" style="background-color:#0094d6; width:100%; height:75px;position:fixed; " class="center "><div id="a" style="width:1010px; height:75px; background-color:#000000;background:url(xx.png); background-repeat:no-repeat; font-family:Arial, Helvetica, sans-serif; font-size:11px; color:#003; " class="inner div_border"> <table width="1010" border="0" > <tr > <td width="15%" rowspan="2"><a href="" style="cursor:pointer; cursor:hand;"><div style="width:200px; height:50px;background-color:none;"></div></a></td> <td width="22%" height="14">&nbsp;</td> <td width="5%">&nbsp;</td> <td width="5%">&nbsp;</td> <td width="28%">&nbsp;</td> <td width="2%">&nbsp;</td> <td width="23%">&nbsp;</td> </tr> <tr> <td colspan="4"> </td> <td colspan="2"><span style="float: right; " ><div style="background-color:#006d9e;border-radius:3px; width:250px; height:34px; display: table; vertical-align: middle; color:#FFF; "> <table width="100%" border="0" > <tr > <td width="43%" style="text-align:center"> Start to bump !</td> <td width="29%"><div id='basic-modal'><span style="float: right; " ><input name="login_btn" type="button" class="login_button basic" id="login_btn" value="Sign in" /></span></div></td> <td width="28%"><span style="float: right; " ><form id="form_reg" method="post"><input name="register_btn" type="button" class="register_button" id="register_btn" value="Sign up" onclick="got_to_signup()"/></form></span></td> </tr> </table> </div></span></td> </tr> <tr> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td style="color:#FFF; font:Arial, Helvetica, sans-serif; font-size:9px; text-align:right;"> Beta Version </td> </tr> </table> </div></div></div> here is my facebook like button code </script> <div id="fb-root"></div> <script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1&appId=368003049941951"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));</script> <td height="21" colspan="2"> <table width="187" style="margin-left:3px;font-size:1px;background-image:url(share_back.png);background-repeat:no-repeat;border-radius:3px;" > <!--tweeter button--> <tr><td width="71"><a href="https://twitter.com/bump_lk" class="twitter-follow-button" data-show-count="false" style="float:right;">Follow @bump_lk</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></td> <!--facebook like button--> <td width="48"><div class="fb-like" data-href="https://www.facebook.com/Bump.lk" data-send="false" data-layout="button_count" data-width="10" data-show-faces="false" style="position:relative;"></div> </td></tr></table></td> <td>&nbsp;</td> <td>&nbsp;</td> <td >

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  • how to copy a sqlite3 table to another file in python

    - by james
    hey i was wondering how i could make a copy of a sqlite3 table and save it to a seperate file in python. im confused as in python your sqlite3 object can only be connected to one database so how would i make it save to a seperate database? the reason i want to do this is in sqlite3 the database file size can never get smaller, and ive made alot of changes so i want just copy this table to another file which wont have all the extra empty space and then delete the origonal database thanks guys

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  • Refresh browser???????????????????????????

    - by Ritz
    hello all, I am working with images and changing their sizes dynamically from the input I get from the user. when I change the size of the image first time it doesnot reflect the changes when I click the refresh the page using the browser button the change gets reflected and after that tere is no need to click the refresh button Please tell how shall I do it so that there is no need to click the refresh button of the browser ,the changes but get reflected at one shot. Thanks Ritz

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  • Exception Outlook 2010 add in

    - by muzammil ahmed
    I am facing a exception with a addin that we have written for outlook 2010. Basically i am calculating the size of the emails. Following are the details of the exception Message: Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL)) -Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL)) - at Microsoft.Office.Interop.Outlook._MailItem.get_Size() at MFToolHelper.getFolderItemsSize(Items fItems) Category: Exception Priority: -1 EventId: 0 Severity: Error Title:LogErrorMessage : at Microsoft.Office.Interop.Outlook._MailItem.get_Size() Win32 ThreadId:5960 Thanks

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  • RIA: Manipulate DOM

    - by stephanos
    I want to display a website embedded in my own site and modify the DOM (e.g. change a button's color/size), similar to what Firebug is capable of. I'm aware of the security issues that arise - my plan is to use this approach to do live website usability testing (A/B style). I'm not limited to any specific RIA framework (yet would prefer Flex) - but it has to work without installing anything (so no AIR). Cheers :-)

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  • how to load part of the HTML page which is currently on display ?

    - by ganapati hegde
    Hi, i have an ebook(relatively large size say 800 pages),in HTML format. I am opening that book as webpage using webkit-gtk+. If i load the whole book at a time,it takes too much memory(RAM ).So i dont want to load the whole book at a time, but load the part of the book which is currently on display. and when the user scrolls down, next part should be displayed.How can i implement that ?

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  • How restore data from pcap file?

    - by dscTobi
    Hi ppl =) I have following file: test_network.pcap: tcpdump capture file (little-endian) - version 2.4 (Ethernet, capture length 65535) I know that in this file are few video streams and i need to extract them. How can i do this? The biggest problem is that size of file ~180 GB ))

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  • Reading and writing C++ vector to a file

    - by JB
    For some graphics work I need to read in a large amount of data as quickly as possible and would ideally like to directly read and write the data structures to disk. Basically I have a load of 3d models in various file formats which take too long to load so I want to write them out in their "prepared" format as a cache that will load much faster on subsequent runs of the program. Is it safe to do it like this? My worries are around directly reading into the data of the vector? I've removed error checking, hard coded 4 as the size of the int and so on so that i can give a short working example, I know it's bad code, my question really is if it is safe in c++ to read a whole array of structures directly into a vector like this? I believe it to be so, but c++ has so many traps and undefined behavour when you start going low level and dealing directly with raw memory like this. I realise that number formats and sizes may change across platforms and compilers but this will only even be read and written by the same compiler program to cache data that may be needed on a later run of the same program. #include <fstream> #include <vector> using namespace std; struct Vertex { float x, y, z; }; typedef vector<Vertex> VertexList; int main() { // Create a list for testing VertexList list; Vertex v1 = {1.0f, 2.0f, 3.0f}; list.push_back(v1); Vertex v2 = {2.0f, 100.0f, 3.0f}; list.push_back(v2); Vertex v3 = {3.0f, 200.0f, 3.0f}; list.push_back(v3); Vertex v4 = {4.0f, 300.0f, 3.0f}; list.push_back(v4); // Write out a list to a disk file ofstream os ("data.dat", ios::binary); int size1 = list.size(); os.write((const char*)&size1, 4); os.write((const char*)&list[0], size1 * sizeof(Vertex)); os.close(); // Read it back in VertexList list2; ifstream is("data.dat", ios::binary); int size2; is.read((char*)&size2, 4); list2.resize(size2); // Is it safe to read a whole array of structures directly into the vector? is.read((char*)&list2[0], size2 * sizeof(Vertex)); }

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  • Monitor memory usage of child process

    - by Omry
    I have a Linux daemon that forks a few children and monitors them for crashes (restarting as needed). It will be great if the parent could monitor the memory usage of child processes - to detect memory leaks and restart child processes when the go beyond a certain size. How can I do this?

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  • jquery-plugin columnizer: is it really so slow ?

    - by Patrick
    hi, I'm using jquery-plugin columnizer http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=columnizer for this website: http://donatellabernardi.ch/drupal It is sometimes very slow to create the columns (you can try changing the browser window size, or selecting a filter. Sometimes Firefox gives the error message: "Unresponsive Javascript script" and I have to press on continue to continue the navigation. thanks

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  • Removing the transperancy from image while keeping the actual image

    - by KPL
    Hello people, I have three images,and , they are not square or rectangular in shape. They are just like face of anyone. So,basically, my images are in the size 196x196 or anything like that, but complete square or rectangle with the face in the middle and transperant background in the rest of the portion. Now, I want to remove the transperant background too and just keep the faces. Don't know if this is possible and mind you, this isn't a programming question.

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  • .NET Object Dump

    - by Thomas
    Hi all, I have a question about the dump of an objet. 0:000> !do 0x012817b8 Name: blabla.Union2 MethodTable: 009231ac EEClass: 00921548 Size: 16(0x10) bytes Fields: MT Field Offset Type VT Attr Value Name 790fd0f0 4000003 4 System.Object 0 instance 00000000 o 7912d7c0 4000004 8 System.Int32[] 0 instance 00000000 arr What are the significations of : Field, Offset, VT ?

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  • problem with select boxes - second options based on first selection

    - by Charles Marsh
    Hello All, I just posted a question about opening in a new window but if I use window.location it doesn't work?? is there a problem with my javascript? <script type="text/javascript"> function setOptions(chosen){ var selbox = document.formName.table; selbox.options.length = 0; if (chosen == " ") { selbox.options[selbox.options.length] = new Option('No diploma selected',' '); } if (chosen == "1") { selbox.options[selbox.options.length] = new Option('first choice - option one','http://www.pitman-training.com'); selbox.options[selbox.options.length] = new Option('first choice - option two','onetwo'); } if (chosen == "2") { selbox.options[selbox.options.length] = new Option('second choice - option one','twoone'); selbox.options[selbox.options.length] = new Option('second choice - option two','twotwo'); selbox.options[selbox.options.length] = new Option('second choice - option three','twothree'); selbox.options[selbox.options.length] = new Option('second choice - option four','twofour'); } if (chosen == "3") { selbox.options[selbox.options.length] = new Option('third choice - option one','threeone'); selbox.options[selbox.options.length] = new Option('third choice - option two','threetwo'); } } </script> Its a little messy I know... <form name="formName" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>"> <select name="optone" size="1" onchange="setOptions(document.formName.optone.options[document.formName.optone.selectedIndex].value);"> <option value=" " selected="selected">Please select a diploma</option> <option value="1">First Choice</option> <option value="2">Second Choice</option> <option value="3">Third Choice</option> </select> <select name="table" size="1" > <option value=" " selected="selected">No diploma selected</option> </select> <input type="submit" onclick="ob=this.form.table;window.location(ob.options[ob.selectedIndex].value)"/> </form> to be honest I'm not happy with this anyway I want a way to hide the Submit button until the second selected box has been selected...but I'm no java expert! Can anyone point me in the right direction?

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  • How to detect OpenGL capabilities without creating a GLSurfaceView (Android)

    - by ADB
    I am trying to access the OpenGL capability of the phone before deciding whether to use OpenGL or Canvas for graphics puposes. However, all the functions that I can read documentation on requires you to already have a valid OpenGL context (namely, create a GLSurfaceView and assign it a rendered. Then check the OpenGL parameters in the onSurfaceCreated). So, is there a way to check the extensions, renderer name and max texture size capability of the phone BEFORE having to create any OpenGL views?

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  • Calculating Connection/Download Speed

    - by kdbdallas
    I have a client and server program (both in Obj-C) and I am transferring files between two devices using the programs. The transferring is working fine, but I would like to display to the user what transfer rate they are getting. So I know the total size of the file, and how much of the file has been transferred, is there a way to figure out the transfer rate from this information, and if not, what information do I need to calculate the transfer rate? Thanks

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