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Articles indexed in April 2010

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  • Having an outline for MouseOver for a WPF ListView

    - by Joan Venge
    I am using Windows 7 and the current item selection (by default) is to paint the background with cornflower blue. Is it possible to get rid of this and replace it with a 1px outline/border over the listview item that the mouse is over? I basically want to draw a 1px outline/border over any listview item with 1 pixel spacing between the listview item and the outline/border. I am using a WrapPanel with an Image in it for each item.

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  • Displaying Data on the Form with C#

    - by The.Anti.9
    I'm searching files and returning lines that include the search text, and I'm not really sure the best way to display the information I get. Every time I get a match, I want to show, in some sort of control, the File it came from, and the whole text line. (aka streamreader.ReadLine() result). First I tried just putting it all in a read-only text box, but it doesn't have a scroll bar. What is the best form control to help me display this data neatly?

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  • Justified navigation buttons

    - by Kaivosukeltaja
    I'm trying to create the primary navigation menu for a website that will have a variable amount of primary menu items. The navigation bar is horizontal and has a width of 738px. I would like to have the leftmost item 18px from the left and the rightmost item 18px from the right edge of the element, with the other menu items spread evenly between them. I'm using a tableless layout. So far I haven't been able to make it work exactly like I want. Setting margin: auto doesn't seem to help, and I can't keep the 18px margin on both sides using a table. One idea was to use text-align: justify but it doesn't justify single lines. Is there a simple or less simple way of doing this, or am I going to have to ask the AD to relax his visual requirements?

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  • what does synchronization mean in hibernate..

    - by abc
    i read that upon session.flush() The data will be synchronized (but not committed) when session.flush() is called what is synchronized with what.. whether it is DB state that will come to memory by querying or memory state will be copied to Db ? clarify this plz..

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  • Can you force a MPMoviePlayerPlaybackDidFinishNotification ?

    - by Jonathan
    Hi, I have several movies that are played and presented using this code. As you can see I also have removed the default movie controls and have added a custom overlay which essentially just stops the video. Here is my problem... When I stop the movie with my custom overlay button, I don't seem to be getting the 'MPMoviePlayerPlaybackDidFinishNotification' Note: everything works normal if I let the movie play through and it stop by itself. Is the any way of 'forcing' the PlaybackDidFinish notification? Can I do something like this [self moviePlayBackDidFinish:something]; ? Thank You! - (void) playMovie { NSString *path = [[NSBundle mainBundle] pathForResource:@"movie_frog" ofType:@"m4v"]; NSURL *url = [NSURL fileURLWithPath:path]; MPMoviePlayerController *mp = [[MPMoviePlayerController alloc] initWithContentURL:url]; if(mp) { self.myMoviePlayer = mp; [mp release]; //movie view [self.view addSubview:myMoviePlayer.view]; myMoviePlayer.view.frame = CGRectMake(0.0,0.0,480,320); self.myMoviePlayer.controlStyle = MPMovieControlStyleNone; [self.myMoviePlayer play]; //videoNav _videoNav = [[videoNav alloc] initWithNibName:@"videoNav" bundle:nil]; [self.view addSubview:_videoNav.view]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; } }

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  • Why do so many mathematicians format code so poorly? [closed]

    - by marcog
    I have done a fair amount of programming together with mathematicians. Now I am even teaching some high school kids coming from a mathematics background how to program. Most of these people format their code so hideously it's hard to believe. I've even worked with and taught mathematicians who will fight the auto-indenter! Why is this so common amongst mathematicians? BTW, this is one reason I have started teaching Python. Yet still they find ways other than indentation to produce whacked coding styles!

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  • How to improve Visual C++ compilation times?

    - by dtrosset
    I am compiling 2 C++ projects in a buildbot, on each commit. Both are around 1000 files, one is 100 kloc, the other 170 kloc. Compilation times are very different from gcc (4.4) to Visual C++ (2008). Visual C++ compilations for one project take in the 20 minutes. They cannot take advantage of the multiple cores because a project depend on the other. In the end, a full compilation of both projects in Debug and Release, in 32 and 64 bits takes more than 2 1/2 hours. gcc compilations for one project take in the 4 minutes. It can be parallelized on the 4 cores and takes around 1 min 10 secs. All 8 builds for 4 versions (Debug/Release, 32/64 bits) of the 2 projects are compiled in less than 10 minutes. What is happening with Visual C++ compilation times? They are basically 5 times slower. What is the average time that can be expected to compile a C++ kloc? Mine are 7 s/kloc with vc++ and 1.4 s/kloc with gcc. Can anything be done to speed-up compilation times on Visual C++?

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  • Swing- focus problem

    - by AlonaK
    Hi, In my application I have a frame, with toolbar (the toolbar contains some actions). I want the toolbar to be visible only when the window is focused. So, I registered a windowFocusListener on the window. The problem is- when the window is not focused and I click on the place where a tool bar action should be- the action is performed. This happens because the WindowFocusGained is called before the mouse button is released and when the mouse button released it calls the actionPerformed. Does anybody has any idea for a work around for this problem? Does anybody know how to determine wether the mouse button is clicked now?

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  • Reordering arguments using recursion (pro, cons, alternatives)

    - by polygenelubricants
    I find that I often make a recursive call just to reorder arguments. For example, here's my solution for endOther from codingbat.com: Given two strings, return true if either of the strings appears at the very end of the other string, ignoring upper/lower case differences (in other words, the computation should not be "case sensitive"). Note: str.toLowerCase() returns the lowercase version of a string. public boolean endOther(String a, String b) { return a.length() < b.length() ? endOther(b, a) : a.toLowerCase().endsWith(b.toLowerCase()); } I'm very comfortable with recursions, but I can certainly understand why some perhaps would object to it. There are two obvious alternatives to this recursion technique: Swap a and b traditionally public boolean endOther(String a, String b) { if (a.length() < b.length()) { String t = a; a = b; b = t; } return a.toLowerCase().endsWith(b.toLowerCase()); } Not convenient in a language like Java that doesn't pass by reference Lots of code just to do a simple operation An extra if statement breaks the "flow" Repeat code public boolean endOther(String a, String b) { return (a.length() < b.length()) ? b.toLowerCase().endsWith(a.toLowerCase()) : a.toLowerCase().endsWith(b.toLowerCase()); } Explicit symmetry may be a nice thing (or not?) Bad idea unless the repeated code is very simple ...though in this case you can get rid of the ternary and just || the two expressions So my questions are: Is there a name for these 3 techniques? (Are there more?) Is there a name for what they achieve? (e.g. "parameter normalization", perhaps?) Are there official recommendations on which technique to use (when)? What are other pros/cons that I may have missed?

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  • jQuery Hover Fade Button with an Active State

    - by Tim
    I do not want to double post a question; I was trying to post an add-on to my first question that I was looking for additional help. How does one go about this? Here is the original question. jQuery Hover Fade Button with an Active State Was hoping to see if there is a solution to the glitch I found. The problem I am now looking for help with is all other buttons still have the hover effect, but a button that was once active no longer does. <ul class="buttons"> <li><a class="button" href="#">button 1</a></li> <li><a class="button" href="#">button 2</a></li> <li><a class="button" href="#">button 3</a></li> </ul> Best way to explain this. If button 2 is clicked – it is now active. Buttons 1 and 3 will still hover. If you click on button 1 – it is now active and button 2 will no longer hover while button 3 will. Eventually when you go through the series of all buttons the animation hover is no longer.

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  • Connect controls in Visual Studio 2010 UML Modeling Diagrams

    - by Dim
    I've tried to create UML diagram with MSVS 2010 b2 today and I've faced a problem. After I added controls from toolbox (such as Class, Interface) I could not connect these items! So connecting controls have been disabled on the toolbox when I tried to drag it on working area. How to connect UML controls? thx

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  • Make UILabel show "No results" instead of "nan"

    - by Mike Rychev
    I have a small app, where user can make some calculations and solve equations. For example, if in a square equation discriminant is less than zero, the x1 and x2 values are "nan", so when I assign x1 and x2 values to UILabels they show "nan" as well. Writing a lot of if's like if(D<0) [label setText:[NSString stringWithFormat: @"No solutions"]]; Doesn't help-there are too many cases. I want to check if after [label setText:[NSString stringWithFormat: @"%f", x]]; label's value is "nan", the label's value will be set to @"No solutions". Doing simple if(label==@"nan") { //code } doesn't help. Thanks in advance!

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  • What AOP tools exist for doing aspect-oriented programming at the assembly language level against x8

    - by JohnnySoftware
    Looking for a tool I can use to do aspect-oriented programming at the assembly language level. For experimentation purposes, I would like the code weaver to operate native application level executable and dynamic link libraries. I have already done object-oriented AOP. I know assembly language for x86 and so forth. I would like to be able to do logging and other sorts of things using the familiar before/after/around constructs. I would like to be able to specify certain instructions or sequences/patterns of consecutive instructions as what to do a pointcut on since assembly/machine language is not exactly the most semantically rich computer language on the planet. If debugger and linker symbols are available, naturally, I would like to be able to use them to identify subroutines' entry points , branch/call/jump target addresses, symbolic data addresses, etc. I would like the ability to send notifications out to other diagnostic tools. Thus, support for sending data through connection-oriented sockets and datagrams is highly desirable. So is normal logging to files, UI, etc. This can be done using the action part of an aspect to make a function call, but then there are portability issues so the tool needs to support a flexible, well-abstracted logging/notifying mechanism with a clean, simple yet flexible. The goal is rapid-QA. The idea is to be able to share aspect source code braodly within communties as well as publicly. So, there needs to be a declarative security policy file that users can share. This insures that nothing untoward that is hidden directly or indirectly in an aspect source file slips by the execution manager. The policy file format needs to be simple to read, write, modify, understand, type-in, edit, and generate. Sort of like Java .policy files. Think the exact opposite of anything resembling XML Schema files and you get the idea. Is there such a tool in existence already?

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  • Resharper: how to force introducing new private fields at the bottom of the class?

    - by Igor Brejc
    Resharper offers a very useful introduce and initialize field xxx action when you specify a new parameter in a constructor like: Constructor (int parameter) The only (minor) nuisance is that it puts the new field at the beginning of the class - and I'm a fan of putting private parts as far away as possible from the prying eyes of strangers ;). If, however, you already have some private fields in the class, Resharper will put the new field "correctly" (note the quotes, I don't want to start a flame war over this issue) next to those, even if they are at the end of the class. Is there a way to force Resharper to always put new fields at the end of the class? UPDATE: OK, I forgot to mention I know about the "Type Members Layout in Options" feature, but some concrete help on how to modify the template to achieve fields placement would be nice.

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  • Can you help with this assembly language code?

    - by Mugen
    Hi, I've been looking through a piece of code of a pc game that I'm trying to "improve". (ok so maybe I suck at the game but I still want to play it). Could you please look into the following code: fld dword ptr[ebp+00007B1C] fsub dword ptr[esp+64] fst dword ptr[ebp+00007B1C] call 004A2E48 This code is called every second for the level countdown timer. I need to stay on a particular level for a few minutes. If I can modify the above code so that the value pushed into the address [ebp+00007B1C] is 0 then the game level will always time out and it will save me playing those crazy "survival" minigames. I'll explain what I understand from this code. Dont worry, you dont have to go deep into this. In the first line we get the timer value. For example if 97 seconds are remaining then it is here that this value is loaded. In the second line a value (1 second) is subtracted from 97. In the third line 96 is again moved to memory. And finally we have the function call that will do other processing based on the time remaining. Now all I need to do is patch this piece of code somehow so that the value that is pushed is 0 (in the third step). Can you please help me out with this?

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  • C: lseek() related question.

    - by Andrei Ciobanu
    I want to write some bogus text in a file ("helloworld" text in a file called helloworld), but not starting from the beginning. I was thinking to lseek() function. If I use the following code: #include <unistd.h> #include <fcntl.h> #include <sys/stat.h> #include <sys/types.h> #include <stdlib.h> #include <stdio.h> #define fname "helloworld" #define buf_size 16 int main(){ char buffer[buf_size]; int fildes, nbytes; off_t ret; fildes = open(fname, O_CREAT | O_TRUNC | O_WRONLY, S_IRUSR | S_IWUSR); if(fildes < 0){ printf("\nCannot create file + trunc file.\n"); } //modify offset if((ret = lseek(fildes, (off_t) 10, SEEK_END)) < (off_t) 0){ fprintf(stdout, "\nCannot modify offset.\n"); } printf("ret = %d\n", (int)ret); if(write(fildes, fname, buf_size) < 0){ fprintf(stdout, "\nWrite failed.\n"); } close(fildes); return (0); } , it compiles well and it runs without any apparent errors. Still if i : cat helloworld The output is not what I expected, but: helloworld Can Where is "Can" comming from, and where are my empty spaces ? Should i expect for "zeros" instead of spaces ? If i try to open helloworld with gedit, an error occurs, complaining that the file character encoding is unknown.

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