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  • Could not determine metatable error binding list to asp.net datagridview

    - by Scott Vercuski
    I am working with the following block of code ... List<ThemeObject> themeList = (from theme in database.Themes join image in database.DBImages on theme.imageID equals image.imageID into resultSet from item in resultSet select new ThemeObject { Name = theme.Name, ImageID = item.imageID}).ToList(); dgvGridView.DataSource = themeList; dgvGridView.DataBind(); The list object populates fine. The datagrid is setup with 2 columns. A textbox column for the "Name" which is bound to "Name" An image column which is bound to the "ImageID" field When I execute the code I receive the following error on the DataBind() Could not determine a MetaTable. A MetaTable could not be determined for the data source '' and one could not be inferred from the request URL. Make sure that the table is mapped to the dats source, or that the data source is configured with a valid context type and table name, or that the request is part of a registered DynamicDataRoute. I'm not using any dynamicdataroutes as far as I can tell. Has anyone experienced this error before?

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  • Set UIImageView Size?

    - by Tronic
    hi, i have following problem: i generate subviews UIView in an UIScrollView including UIImageViews. NSArray *bilder = [[NSArray alloc] initWithObjects:@"lol.jpg", @"lol2.jpg", nil]; NSArray *added = [[NSMutableArray alloc] init]; UIImageView *tmpView; for (NSString *name in bilder) { UIImage *image = [UIImage imageNamed:name]; tmpView = [[UIImageView alloc] initWithImage:image]; tmpView.contentMode = UIViewContentModeScaleAspectFit; tmpView.frame = CGRectMake(0, 0, 300, 300); [added addObject:tmpView]; [tmpView release]; } CGSize framy = mainFrame.frame.size; NSUInteger x = 0; for (UIView *view in added) { [mainFrame addSubview:view]; view.frame = CGRectMake(framy.height * x++, 0, framy.height, framy.width); } mainFrame.scrollEnabled = YES; mainFrame.pagingEnabled = YES; mainFrame.contentSize = CGSizeMake(framy.height * [added count], framy.width); mainFrame.backgroundColor = [UIColor blackColor]; i get image file names out of an array. now i want to resize the imageview to a specific size, but it won't work. any advice? thanks + regards

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  • JFileChooser for directories on the Mac: how to make it not suck?

    - by Mike Hearn
    The JFileChooser in "directories only" mode on the Mac has two serious, crippling problems: 1) You cannot create directories with it 2) You cannot switch drives This is rather a huge problem for my installer app. As far as I can tell, Apple provides no way around this problem, you can't even activate the non-native directory chooser ... so the only alternative is to find a free/open source pure-Java replacement widget. Does anybody know of one?

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  • OpenCV Video capture and fps problem

    - by Andrea Girardi
    Hi to all, I'm capturing video from my webcam using OpenCV on MacOSX. It works fine but when I try to play on QuickTime my captured video it plays too fast. i.e. I capture from camera for 10 seconds but when I play on QuickTime the video is 2 seconds. I've tried to change fps from 25 to 10 and It's works quite fine, but I'm sure it's not the correct process: CvVideoWriter *writer = 0; int isColor = 1; int fps = 25; int frameW = 640; // 744 for firewire cameras int frameH = 480; // 480 for firewire cameras The problem is that for now I've to capture with WebCam but the real pourpose of program is to capture image from any external source connected to my Mac. I'm using this code to capture: for (;;) { cvGrabFrame(capture) image = cvRetrieveFrame(capture); cvWriteFrame( writer, image ); } Any hint? I'm also showing webcam output on cvNamedWindow, how can I improve quality in this windows? thanks a lot to all! Andrea!

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  • Mono Winforms Mac OS X Relpacement for WebBrowser

    - by Tristan
    I'm one step away from having my Windows .Net application working on Mac OS X, and the last thing I need to figure out is the WebBrowser control. I need to display a webpage and not much more with winforms but haven't been able to find any examples or information on how I can replace the WebBrowser control on Mac OS X Has anyone already found a solution for a web control replacement using winforms on mac os x, and can point me to some source code or talk me through it?

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  • Generating a salt in PHP

    - by qster
    What's the best way to generate a cryptographically secure 32 bytes salt in PHP, without depending on libraries seldom included in typical PHP installations? After some googling I discovered that mt_rand is not considered secure enough, but I haven't found a suggestion for a replacement. One article suggested reading from /dev/random but not only this won't work on windows; it is also very slow. I want a reasonable balance between security and speed (ie, it shouldn't take 20 seconds to generate 512 bytes, like /dev/random usually does)

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  • Usage of Biztalk SAP Adapter without Biztalk Server to connect .NET and SAP

    - by Kottan
    Is it possible to use the Biztalk adapter pack whithout a Biztalk installation (Biztalk license is available)? I want to use the Biztalk Adapter for SAP RFC calls within a .NET Application (as a replacement of the SAP Connector for .NET, which is unfortunately no longer maintened by SAP and I don't can use third party products like "ErpConnect"). Makes this idea sense or not ? This questions can be also seen in conjunction of my question concerning connecting SAP and Microsoft (http://stackoverflow.com/questions/2198168/microsoft-and-sap)

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  • Win32 Event vs Semaphore

    - by JP
    Basically I need a replacement for Condition Variable and SleepConditionVariableCS because it only support Vista and UP. (For C++) Some suggested to use Semaphore, I also found CreateEvent. Basically, I need to have on thread waiting on WaitForSingleObject, until something one or more others thread tell me there is something to do. In which context should I use a Semaphore vs an Win Event? Thanks

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  • Add shadow to UIImage drawn in rounded path

    - by Tom Irving
    I'm drawing a rounded image in a UITableView cell like so: CGRect imageRect = CGRectMake(8, 8, 40, 40); CGFloat radius = 3; CGFloat minx = CGRectGetMinX(imageRect); CGFloat midx = CGRectGetMidX(imageRect); CGFloat maxx = CGRectGetMaxX(imageRect); CGFloat miny = CGRectGetMinY(imageRect); CGFloat midy = CGRectGetMidY(imageRect); CGFloat maxy = CGRectGetMaxY(imageRect); CGContextMoveToPoint(context, minx, midy); CGContextAddArcToPoint(context, minx, miny, midx, miny, radius); CGContextAddArcToPoint(context, maxx, miny, maxx, midy, radius); CGContextAddArcToPoint(context, maxx, maxy, midx, maxy, radius); CGContextAddArcToPoint(context, minx, maxy, minx, midy, radius); CGContextClosePath(context); CGContextClip(context); [self.theImage drawInRect:imageRect]; This looks great, but I'd like to add a shadow to it for added effect. I've tried using something along the lines of: CGContextSetShadowWithColor(context, CGSizeMake(2, 2), 2, [[UIColor grayColor] CGColor]); CGContextFillPath(context); But this only works when the image has transparent areas, if the image isn't transparent at all, it won't even draw a shadow around the border. I'm wondering if there is something I'm doing wrong?

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  • fbjs ajax to load content

    - by fusion
    i tried one of the examples here to load the content in the div, but apart from displaying the image, it doesn't show anything. can anyone please point out where i'm going wrong? ajax1.js: function General_Refresh(url,div){ //Showing the load image (pay attention to /> of <img document.getElementById(div).setInnerXHTML('<span id="caric"><center><img src="http://website.name/images/ajax-loader.gif" /></center></span>'); var ajax = new Ajax(); ajax.responseType = Ajax.FBML; ajax.ondone = function(data) { //Hide the loading image document.getElementById('caric').setStyle('display','none'); document.getElementById(div).setInnerFBML(data); } //If there are errors re-try ajax.onerror = function() { General_Refresh(url,div); } ajax.post(url); } quote.html: <script src="http://website.name/scripts/ajax1.js" type="text/javascript"></script> <script type="text/javascript"> <!-- General_Refresh("http://website.name/quote.php","quote"); //--> </script> <div id="wrapper"> <div id="quote"><strong>this</strong></div> </div></div>

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  • controller path not found for static images? asp.net mvc routing issue?

    - by rksprst
    I have an image folder stored at ~/Content/Images/ I am loading these images via <img src="/Content/Images/Image.png" /> Recently, the images aren't loading and I am getting the following errors in my error log. What's weird is that some images load fine, while others do not load. Anyone have any idea what is wrong with my routes? Am I missing an ignore route for the /Content/ folder? I am also getting the same error for favicon.ico and a bunch of other image files... <Fatal> -- 3/25/2010 2:32:38 AM -- System.Web.HttpException: The controller for path '/Content/Images/box_bottom.png' could not be found or it does not implement IController. at System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(Type controllerType) at System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) at System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) My current routes look like this: routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = "" } // Parameter defaults ); routes.MapRoute( "ControllerDefault", // Route name "{controller}/project/{projectid}/{action}/{searchid}", // URL with parameters new { controller = "Listen", action = "Index", searchid = "" } // Parameter defaults ); Thanks!

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  • What is the best alternative for jQuery thickbox

    - by Teja Kantamneni
    As jQuery thickbox is not maintained anymore (as of ThickBox 3.1), what is the best alternative for jQuery thickbox currently available under GPL or similar license. Looks nyromodal is best available so far, but is there anything better. (nyromodal has some problems in IE 6) I am looking for a plugin which can handle ajax forms, inline content replacement, images, using hidden elements and ajax call with flexibility using the callback mechanisms..

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  • Can Spring.Net function as PostSharp?

    - by Alex K
    A few months back I've discovered PostSharp, and for a time, it was good. But then legal came back with an answer saying that they don't like the licence of the old versions. Then the department told me that 2.0's price was unacceptably high (for the number of seats we need)... I was extremely disapponted, but not disheartened. Can't be the only such framework, I thought. I kept looking for a replacement, but most of it was either dead, ill maintained (especially in documentation department), for academic use, or all of the above (I'm looking at you Aspect.Net) Then I've discovered Spring.Net, and for a time, it was good. I've been reading the documentation and it went on to paint what seemed to be a supperior picture of an AOP nirvana. No longer was I locked to attributes to mark where I wanted code interception to take place, but it could be configured in XML and changes to it didn't require re-compile. Great. Then I looked at the samples and saw the following, in every single usage scenario: // Create AOP proxy using Spring.NET IoC container. IApplicationContext ctx = ContextRegistry.GetContext(); ICommand command = (ICommand)ctx["myServiceCommand"]; command.Execute(); if (command.IsUndoCapable) { command.UnExecute(); } Why must the first two lines of code exist? It ruins everything. This means I cannot simply provide a user with a set of aspects and attributes or XML configs that they can use by sticking appropriate attributes on the appropriate methods/classes/etc or editing the match pattern in XML. They have to modify their program logic to make this work! Is there a way to make Spring.Net behave as PostSharp in this case? (i.e. user only needs to add attributes/XML config, not edit content of any methods. Alternatively, is there a worthy and functioning alternative to PostSharp? I've seen a few question titled like this on SO, but none of them were actually looking to replace PostSharp, they only wanted to supplement its functionality. I need full replacement.

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  • memory warning, generating UIImagefrom pdf files in objective-c

    - by favo
    When converting PDF Pages into UIImages I receive memory warnings all the time. It seems there is either some leak or something else that eats my memory. Using instruments didn't give me any helpful details. I'm using the following function to generate images from a pdf file: - (UIImage*)pdfImage:(NSString*)pdfFilename page:(int)page { CFURLRef pdfURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, (CFStringRef)pdfFilename, kCFURLPOSIXPathStyle, false); CGPDFDocumentRef pdfRef = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL); CFRelease(pdfURL); CGPDFPageRef pdfPage = CGPDFDocumentGetPage(pdfRef, page); CGRect pdfPageSize = CGPDFPageGetBoxRect(pdfPage, kCGPDFBleedBox); float pdfScale; if ( pdfPageSize.size.width < pdfPageSize.size.height ) { pdfScale = PDF_MIN_SIZE / pdfPageSize.size.width; } else { pdfScale = PDF_MIN_SIZE / pdfPageSize.size.height; } CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef context = CGBitmapContextCreate(NULL, pdfPageSize.size.width*pdfScale, pdfPageSize.size.height*pdfScale, 8, (int)pdfPageSize.size.width*pdfScale * 4, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); CGColorSpaceRelease(colorSpace); // CGContextClipToRect(context, pdfPageView.frame); // CGPDFPageRetain(pdfPage); CGAffineTransform transform = aspectFit(CGPDFPageGetBoxRect(pdfPage, kCGPDFBleedBox), CGContextGetClipBoundingBox(context)); CGContextConcatCTM(context, transform); CGContextDrawPDFPage(context, pdfPage); // CGPDFPageRelease (pdfPage); CGImageRef image = CGBitmapContextCreateImage(context); CGContextRelease(context); UIImage *finalImage = [UIImage imageWithCGImage:image]; CGImageRelease(image); CGPDFDocumentRelease(pdfRef); return finalImage; } I am releasing the document and everything else, so where could be the problem? Thanks for your help!

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  • rockscroll or metalscroll for vis 2010

    - by Lodle
    Has any one found a replacement for rockscroll or metalscroll for visual studio 2010? I miss it so much that i looked into making one my self but only have word highlighting working and a place holder scroll bar and seems to be much harder than i thought it would be. Im happy to share what i got if someone is interested in helping.

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  • Javascript and backslashes replace

    - by Frankie
    here is my string: var str = "This is my \string"; This is my code: var replaced = str.replace("/\\/", "\\\\"); I can't get my output to be: "This is my \\string" I have tried every combination I can think of for the regular expression and the replacement value. Any help is appreciated!

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  • Nested UIScrollView-iPhone photos application

    - by abhishek trivedi
    Hi, I have been facing the same nested UIScrollView problem for long time.I tried some open source codes like Scrolling madness ,three-20 and others but all fails finaly.I am trying to make a photo Viewer application same as iPhone.For that I have created the structure like this:- 1)one View controller. 2)on view of view controller one UIScrollView (i.e inner/parent scroll view) as a child. 3)on inner/parent scroll view number of child scroll views(i.e. outer/child scroll views) ,each represents one page of photos application. 4)On each scroll view one image View on which i am displaying my image. So what I want is when user scrolls the outer scroll view it should scroll horizontally with all the child views so I will get the look and feel of paging in photos application.Also when user is on one specific image(i.e. child/outer scroll view) he should be able to zoom in/out,swipes and perform single/double tapping.I was able to make it work in sdk 2.1,but it dosnt work since sdk 3.0.Please tell me the idea behind your project.Means which scroll view you are subclassing ,in which view to detect touches.How this completely child - parent relation should be. If possible provide any sample code also.

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  • PrintableArea in C# - Bug?

    - by Brandi
    I am having an issue with PageSettings.PrintableArea's width and height values. Width, Height, and Size properties claim to "get or set" the values. Also, the inflate() function claims to change the size based on values passed in. However, all of these attempts to change the value have not worked. Inflate() is ignore (no error, just passes as if it worked, but the values remain unchanged. Attempting to set the height, width, or size gives a compiler error: "Cannot modify the return value of 'System.Drawing.Printing.PageSettings.PrintableArea' because it is not a variable". I get the feeling that this means the "or set" part of the description is a lie. Why I want to know this: (Someone always asks...) I have a printing application (C#, WinForm) that for most things is working rather well. I can set the printer settings and page settings objects to control what displays in the print dialog's printer properties. However, with Microsoft Office Document Image Writer, these settings are sometimes ignored, and the paper size returns as 0, 0 even when it displayed something else. All I really want it for it to be WYSIWYG as far as the displayed values go, so I change the paper size back to what it should be, but the printable area, if it is wrong, makes the resulting image wonky. The resulting image is the size of the printable area instead of the value in papersize. Just wondering if there was a reason for this or a way to get it not to do that. Thanks in advance. :)

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  • can't figure out serving static images in django dev environment

    - by photographer
    I've read the article (and few others on the subject), but still can't figure out how to show an image unless a link to a file existing on a web-service is hard-coded into the html template. I've got in urls.py: ... (r'^galleries/(landscapes)/(?P<path>.jpg)$', 'django.views.static.serve', {'document_root': settings.MEDIA_URL}), ... where 'landscapes' is one of the albums I'm trying to show images from. (There are several more of them.) In views.py it calls the template with code like that: ... <li><img src=160.jpg alt='' title='' /></li> ... which resolves the image link in html into: http://127.0.0.1:8000/galleries/landscapes/160.jpg In settings.py I have: MEDIA_ROOT = 'C:/siteURL/galleries/' MEDIA_URL = 'http://some-good-URL/galleries/' In file system there is a file C:/siteURL/galleries/landscapes/160.jpg and I do have the same file at http://some-good-URL/galleries/landscapes/160.jpg No matter what I use in urls.py — MEDIA_ROOT or MEDIA_URL (with expectation to have either local images served or from the web-server) — I get following in the source code in the browser: <li><img src=160.jpg /></li> There is no image shown in the browser. What am I doing wrong?

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  • JQuery validate: How to add a rule for regular expression validation?

    - by PeterTheNiceGuy
    I am new to JQuery and am using the JQuery validation plugin. Great stuff! I want to migrate my existing ASP.NET solution to use JQuery instead of the ASP.NET validators. I am missing a replacement for the regular expression validator. I want to be able to do something like this: $("Textbox").rules("add", { regularExpression: "^[a-zA-Z'.\s]{1,40}$" }) Could anyone give me a hint how to add a custom rule to achieve this?

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  • Parse MIME messages

    - by Abhimanyu
    Hi, For my new project which has email module.i need to show all the email information on web.when i m making a call to server i m getting the base64 encoded mime data. after applying base64 decoding technique i m getting the mime data as follows: /*****************Mime data start *******************************/ From [email protected] Tue Jun 23 12:01:02 2009 Date: Tue, 23 Jun 2009 12:01:02 +0530 From: Prashant R Naik <[email protected]> To: [email protected] Subject: This is a test mail Message-ID: <[email protected]> Reply-To: Prashant R Naik <[email protected]> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="ReaqsoxgOBHFXBhH" Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Status: RO Content-Length: 1912 Lines: 52 --ReaqsoxgOBHFXBhH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Test mail. Initiated by prashant Regards, -- Prashant R Naik Principal Technologist | Symbian & Web2.0 Geodesic Limited | www.geodesic.com Tel: +91-80-66551000 --ReaqsoxgOBHFXBhH Content-Type: image/gif Content-Disposition: attachment; filename="trash.gif" Content-Transfer-Encoding: base64 R0lGODlhEAAQANUoADJ8wTqU2DmR1TqV2DN9wTSBxTWFyTaGyTJ9wTWGyTaKzjmS1TOAxTuV 2DaFyTN8wDiN0jiO0jSAxTeKzjqS1DN8wTqR1TWFyjB4vTOBxTmO0TmS1DaKzTeJzTqV1zSA xDJ8wDqS1TeKzTF4vDF4vTiO0f///zuX2gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAACgALAAA AAAQABAAAAaDQNRpSCwWhcakcsk8mZ5Qpik5pUKvT2W1uDVWp+BiYNAImAZmz/lcDoQEFoFp QTFtTPKFQLCAREolJiURJhCCJhqAJRMiIhwmjSYdJgqUjQoODgkJJgecBp0mBgYXBx8ZBQxY UAUSDAUACLEPDwgEAAAEIBUEtygkIyMkwMMYw8EjKEEAOw== --ReaqsoxgOBHFXBhH Content-Type: image/jpeg Content-Disposition: attachment; filename="bx.jpg" Content-Transfer-Encoding: base64 /9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQEBAQEBAQEB AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAAR CAAUAAoDAREAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAn/xAAYEAEAAwEAAAAAAAAA AAAAAAAAGWen5//EABQBAQAAAAAAAAAAAAAAAAAAAAD/xAAUEQEAAAAAAAAAAAAAAAAAAAAA /9oADAMBAAIRAxEAPwCb4AJHym0Vp3PQJTaK07noJHgA/9k= --ReaqsoxgOBHFXBhH Content-Type: image/png Content-Disposition: attachment; filename="day_bg.png" Content-Transfer-Encoding: base64 iVBORw0KGgoAAAANSUhEUgAAAGQAAAApCAYAAADDJIzmAAAABmJLR0QA/wD/AP+gvaeTAAAA CXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH2AwCCS0kTriU2QAAAB10RVh0Q29tbWVudABD cmVhdGVkIHdpdGggVGhlIEdJTVDvZCVuAAAAXElEQVR42u3bQQEAMAgDMZiqiZtP5AwbfeQk NO/WvPtLMR0TABEQIAICRECACAgQAREQIAICRECACAgQAREQIAICRECACAgQAREQIAICRECA CAgQARGQ7NpPPasFT+0FZPjBRwYAAAAASUVORK5CYII= --ReaqsoxgOBHFXBhH-- /*****************Mime data end *******************************/ now the problem is i have to parse this data and use it in my application.since this data is not a xml so it difficult to parse it (because parsing with some tag is easy).so any one who knows how to parse mime data help be.i m using erlang to parse this data. Thank you in advance

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  • Calculating skew of text OpenCV

    - by Nick
    I am trying to calculate the skew of text in an image so I can correct it for the best OCR results. Currently this is the function I am using: double compute_skew(Mat &img) { // Binarize cv::threshold(img, img, 225, 255, cv::THRESH_BINARY); // Invert colors cv::bitwise_not(img, img); cv::Mat element = cv::getStructuringElement(cv::MORPH_RECT, cv::Size(5, 3)); cv::erode(img, img, element); std::vector<cv::Point> points; cv::Mat_<uchar>::iterator it = img.begin<uchar>(); cv::Mat_<uchar>::iterator end = img.end<uchar>(); for (; it != end; ++it) if (*it) points.push_back(it.pos()); cv::RotatedRect box = cv::minAreaRect(cv::Mat(points)); double angle = box.angle; if (angle < -45.) angle += 90.; cv::Point2f vertices[4]; box.points(vertices); for(int i = 0; i < 4; ++i) cv::line(img, vertices[i], vertices[(i + 1) % 4], cv::Scalar(255, 0, 0), 1, CV_AA); return angle; } When I look at then angle in debug I get 0.000000 However when I give it this image I get proper results of a skew of about 16 degrees: How can I properly detect the skew in the first image?

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  • UIButton overlapping problem in the UIView?

    - by sai
    im trying to create buttons as ahierarchy, first some buttons are displayed if i click any of the buttons it will navigate to the next viewcontroller displaying some more buttons. But here my problem is butons are overlapped with one another . means the buttons that should not be displayed are also comming along with those should be . my code is for(.................) { butt = [[UIButton alloc] initWithFrame:CGRectMake(...)]; image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[arr objectAtIndex:i]]]]; imageView = [[[UIImageView alloc] initWithImage:image] autorelease]; [butt setBackgroundImage:imageView.image forState:UIControlStateNormal]; [butt setTag:i]; [butt addTarget:self action:@selector(onClick:) forControlEvents:UIControlEventTouchUpInside]; [containerView addSubview:butt]; [butt release]; x+=butt.frame.size.width+2*hgap; i+=1; if (i==count+1) //[arr count] { printf("\nIN BREAK BUTTON\n"); break; } } y=y+(butt.frame.size.height+2*vgap); } Thankyou for the solution.

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  • Rendering UIImage/CGImage into CGPDFContext results in... blankness!

    - by quixoto
    Hi all, I'm trying to take an image that I have in a image object and render into a Core Graphics PDF context-- happens to be on an iPhone but this question surely applies equally to desktop Quartz. This UIImage is a simple color-on-white image at about 600x800 resolution. If I (say) turn it into a PNG file, that file looks exactly as expected-- so the data is OK. Here's what I'm doing to generate the PDF: NSMutableData * outputData = [[NSMutableData alloc] init]; CGDataConsumerRef dataConsumer = CGDataConsumerCreateWithCFData((CFMutableDataRef)outputData); CFMutableDictionaryRef attrDictionary = NULL; attrDictionary = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFDictionarySetValue(attrDictionary, kCGPDFContextTitle, @"My Awesome Document"); CGContextRef pdfContext = CGPDFContextCreate(dataConsumer, NULL, attrDictionary); CFRelease(dataConsumer); CFRelease(attrDictionary); CGImageRef pageImage = [myUIImage CGImage]; CGPDFContextBeginPage(pdfContext, NULL); CGContextDrawImage(pdfContext, CGRectMake(0, 0, [myUIImage size].width, [myUIImage size].height), pageImage); CGPDFContextEndPage(pdfContext); CGContextRelease(pdfContext); Resulting PDF, which ends up in outputData, seems like a valid PDF file (opens correctly, document title is present in metadata), but it consists of precisely one blank page. What am I doing wrong? Thanks.

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  • WPF Update Binding when Bound directly to DataContext w/ Converter

    - by Adam
    Normally when you want a databound control to 'update,' you use the "PropertyChanged" event to signal to the interface that the data has changed behind the scenes. For instance, you could have a textblock that is bound to the datacontext with a property "DisplayText" <TextBlock Text="{Binding Path=DisplayText}"/> From here, if the DataContext raises the PropertyChanged event with PropertyName "DisplayText," then this textblock's text should update (assuming you didn't change the Mode of the binding). However, I have a more complicated binding that uses many properties off of the datacontext to determine the final look and feel of the control. To accomplish this, I bind directly to the datacontext and use a converter. In this case I am working with an image source. <Image Source="{Binding Converter={StaticResource ImageConverter}}"/> As you can see, I use a {Binding} with no path to bind directly to the datacontext, and I use an ImageConverter to select the image I'm looking for. But now I have no way (that I know of) to tell that binding to update. I tried raising the propertychanged event with "." as the propertyname, which did not work. Is this possible? Do I have to wrap up the converting logic into a property that the binding can attach to, or is there a way to tell the binding to refresh (without explicitly refreshing the binding)? Any help would be greatly appreciated. Thanks! -Adam

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