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• UITableView details as a subview

  - by Leonardo

  Hi all, I have a UITableView in iPhone with enough cell to make it scrollable. I would like to have a subview display whenever I click on a cell, rather than using the navigation controller behaviour. The problem is that I cannot calculate the CGRect exactly to have the subview always centered in page, because the CGRect is calculated from top of table, and if I scroll table and click cell, the subview will be added out of screen. The solution could be easy, but I don't know if it's possible: identify the portion of the current viewable area of the UITableView and obtain in some way the frame and therefore origin and size, then build a subview based on such coordinates. Do you think it's possible without writing not too much code ? thanks Leonardo

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• Replicate behavior of Android browser

  - by Brian515

  Hi all, I am writing for Android, and I can't figure out how to replicate the effect of the Android browser where the progress bar is at the top of the screen, with the webview below it, yet when you scroll down, the bar scrolls with the page. I've tried placing both the webview and the progress bar into a scrollview, but when I do that, the webview becomes completely unresponsive and will not load (or respond to any commands, for that matter). Any help would be greatly appreciated. Thanks! P.S., I'm using the Eclipse IDE, and I'd like to to continue using the 1.5 SDK if possible to maintain backwards compatibility (and just to be able use my own application -- my phone isn't getting 2.1 for a couple of months).

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• Plot Zoom In/Out

  - by Naveen

  Hello All, I am doing dynamic plotting using core plot library and i have placed that plot on UIScrollView so that i can scroll the plot. Now i want to do Pinch Zooming on that, means when i m doing pinch zooming that that part where i have pinched will be zoomed,other part will also be zoomed but we can see certain par of the graph at one time so wherever i have pinched that part will be shown in zoomed state in focused view and when i am doing scrolling i can see other part also in a zoom state. Hope you understood my query!!! Waiting for your response. Thanks

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• Why Does the iPad Main View Refuse to go FullScreen?

  - by dugla

  I am doing an imaging app for iPad and it requires use of the entire screen. The approach I have used on iPhone does not appear to work on iPad. In Interface Builder I have set the UIToolbar to translucent.This code echos the dimensions of the main view before and after requesting fullscreen. (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [self.window addSubview:self.viewController.view]; NSLog(@"Hello Popover AD - application did Finish Launching With Options - viewSize: %f %f BEFORE", self.viewController.view.bounds.size.width, self.viewController.view.bounds.size.height); [self.viewController setWantsFullScreenLayout:YES]; [self.viewController.view layoutIfNeeded]; NSLog(@"Hello Popover AD - application did Finish Launching With Options - viewSize: %f %f AFTER", self.viewController.view.bounds.size.width, self.viewController.view.bounds.size.height); [self.window makeKeyAndVisible]; return YES; } This is what NSlog has to say: Hello Popover AD - application did Finish Launching With Options - viewSize: 768 1004 BEFORE Hello Popover AD - application did Finish Launching With Options - viewSize: 768 1004 AFTER Can someone please tell me what I am doing incorrectly here? Note, on iPhone I set fullscreen within the init method of the relevant ViewController. Can view resizing only be done in a ViewController? My ultimate goal is a fullscreen view nicely tucked underneath a translucent status bar and tool bar. I will retract the status/tool bars when user interaction begins in the main view. Thanks, Doug

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• C#: How to change the region containing MDI children?

  - by Erlend D.

  When creating a MDI parent, the entire "inside" of the form is made the MDI region. If you add a menustrip to the MDI parent, the MDI region is scaled down a bit to make room for the menustrip. But if you add a panel to the top of the MDI parent, the entire inside is still the MDI region. Which means that you can move MDI children up behind the panel, and hide their title line. If you move MDI children behind a menustrip, scrollbars appear, and you can scroll higher up to access the title line. But the scrollbars doesn't appear when you are using a panel instead of a menustrip. Because the MDI region doesn't know about the panel, I suppose. How can I scale the MDI region to start below a given Y value?

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• c# winforms - scrollable panel with rectangles

  - by Peanut

  Hi, I'm new to winforms and have tried to track down an answer to the following with no luck ... I have a panel in winforms and add to it a Rectangle that is wider than the panel itself. I've set the panel AutoScroll property to true however the panels horizontal scrollbar never appears. Why is this? And how do I get the scrollbar to scroll? Here is my code to add the rectangle: private void panel1_Paint(object sender, PaintEventArgs e) { Graphics g = e.Graphics; Rectangle rec = new Rectangle(2, 2, 400, 40); g.DrawRectangle(new Pen(Color.Black), rec); g.FillRectangle(new SolidBrush(Color.Blue), rec); } If I add a Label control to the panel and give it a text value that will go beyond the bounds of the panel - then the autoscroll works, but just not for a rectangle. Many thanks.

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• LinkButton + showmodaldialog not working

  - by CPM

  What would be the west way to open a window.showModalDialog on linkbutton when updating a form? I have a linkbutton on form that allows me to update the data, I want to be able to check if the data updatedin this case , parameter status of client is active I want to be able to open a window to fill some more information. Public Function OpenWindowRquest(ByVal URL As String) As String If accountMode = "1" Then Return "window.showModalDialog('" & Page.ResolveUrl(Server.UrlEncode(URL)) & "', window,'resizable:yes; scroll:on; status:yes; dialogWidth:750px; dialogHeight:350px; center:yes');" Else accountMode = "" Return "" End If On aspx side I have <asp:LinkButton id="UpdateButton" runat="server" commandName="Update" Text="Update" OnClientClick='<%# OpenWindowRequest("myurl.aspx") %>'></asp:LinkButton> I also tried to call the function OpenWindowRequest on FormUpdating event but it doesnt work, window is not opened.

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• Scrolling with CSS

  - by Jordan Trulen

  I have 4 tables that need to scroll, they are set up as follows: Table1(static) Table2(Horizontal Scrolling) Table3(Vertical Scrolling) Table4(Horizontal and Vertical Scrolling) Table1 Table2 Table3 Table4 The tricky part of this is that Table 3 and 4 need to keep in sync as this is a listing of data broken out into two tables. Table 2 and 4 are in the same situation. Any ideas? No Javascript please as we have a script that works, but it is far too slow to work. Thanks.

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• WPF Textbox "normal" text input

  - by Ash Rowe

  G'day, I'm not sure if this is a problem relevant to only me or if anyone else has this issue also. None the less, I'll try and describe what is going on here. I have a few textbox's, default style, etc. I set an explicit maxwidth and maxheight to prevent resize when the text exceeds the default width of the textbox. The issue is that the text wraps to the next line, but I only want single line. So I set maxlines to 1 and textwrapping to NoWrap. That's fine. Now the carat and typed text disappears under the edges of the textbox when the width is exceeded and the only way I can get the carat and newly typed text back into view is by pressing the left and right arrows. Coming from MFC and using textboxes all the time with HTML, I would have thought the default behaviour would be to have the textbox content scroll with the carat or am I missing something here? Thank you, Ash

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• How to tell what name RIA Services/EF Model uses for Associations?

  - by Nick Gotch

  Hi, I'm working on a C#.NET 3.5 WCF RIA Services app and having an issue with my Entity Framework model. My entity Foo is mapped to a DB table and has a primary key called FooId. My Bar is mapped to a DB view. I've selectively designed this view to generate a composite key in the EF using two of the columns (by making sure they were non-nullable and the others are all nullable. This was done using NULLIF and ISNULL in the view design.) I'm able to add this view to the model with no problem but I keep running into an issue when I try to map an association between the two. Foo should contain many Bars but I keep getting the following error when I add the association: Unable to retrieve AssociationType for association 'FK_Bar_Foo' According to this page, it looks like this might work if I can properly name the association (since RIA Services looks for specific names.) I've tried several variants of names that match the pattern of other associations with no success. Does anyone know if there's a place I can look to find out what name it's looking for? Thanks,

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• Scrolling png with text & alpha on top of a static UIImageView

  - by heymon

  I have a view controller that has a view structure as follows: FilesOwner FirstResponder View ImageView (.jpg) ScrollView ImageView (.png) The text in the innermost imageview has white text and clear (alpha) all around. I want to scroll the innermost imageview, and see the background image (the .jpg) behind it. Its not working. Its acting like the scrollview background obscures the underneath .jpg. I say this because if I change the background color of the scrollview, that's what I see i.e. if I set it black, I see black behind my .png, if I set it white, I see white. If I change the alpha of the scrollview that doesn't seem to work either. The one other thing I tried was unchecking drawing: Opaque, but that doesn't get it either.

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• lazy loading images in UIScrollView

  - by idober

  I have an application the requires scrolling of many images. because I can not load all the images, and save it in the memory, I am lazy loading them. The problem is if I scroll too quickly, there are "black images" showing (images that did not manage to load). this is the lazy loading code: int currentImageToLoad = [self calculateWhichImageShowing] + imageBufferZone; [(UIView*)[[theScrollView subviews] objectAtIndex:0]removeFromSuperview]; PictureObject *pic = (PictureObject *)[imageList objectAtIndex:currentImageToLoad]; MyImageView *iv = [[MyImageView alloc] initWithFrame:CGRectMake(currentImageToLoad * 320.0f, 20.0f, 320.0f, 460)]; NSData *imageData = [NSData dataWithContentsOfFile:[pic imageName]]; [iv setupView:[UIImage imageWithData: imageData] :[pic imageDescription]]; [theScrollView insertSubview:iv atIndex:5]; [iv release]; this is the code inside scrollViewWillBeginDecelerating: [NSThread detachNewThreadSelector:@selector(lazyLoadImages) toTarget:self withObject:nil];

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• ASP.NET AJAX UpdatePanel problem

  - by Velika

  I'll try and be concise: 1) I have a dropdownlist with Autopostback set to TRUE 2) I have an UpdatePanel that contains a Label. 3) When the downdownlist selection is changed, I want to update the label. Problem: Focus is lost on the dropdownlist, forcing the user to click on the dropdownlist to reset focus back to the control. My "solution": In the DropDownList_SelectionChanged event, set focus back to the drop down list: dropdownlist1.focus() Problem: While this works great in IE, Firefox and Chrome change the scroll position such that the control which was assigned focus is positioned at the bottom on the visible portion of the browser window. This is often a very disorientating side effect. How can this be avoided so it works in FF as it does in IE?

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• Displaying the selected item differently in ComboBox

  - by David Brunelle

  I have a combo box in which I set up an ItemTemplate that looks something like this: <ComboBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding Piece.NoPiece}" Width="50" /> <TextBlock Text="{Binding Piece.Description}" Width="170" /> <TextBlock Text="{Binding Piece.Categorie.NomCategorie}" /> </StackPanel> </DataTemplate> </ComboBox.ItemTemplate> As you can see, I got three columns that let the user see different piece of information. However, I would like the selected item in the combo to display only the second column. In other word, is there a way to have an ItemTemplate that displays items in a different manner when you scroll down versus when it's closed and you only see the selection?

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• (VB.NET + WPF) Drag + Drop (to allow user sorting) of stackpanel elements within a Scrollviewer?

  - by Matt H.

  I have good model (I think!) for how to allow a user to drag an element in a stackpanel and reposition it to another location within the stackpanel. However, my Stackpanel is placed within a ScrollViewer, like this (generalized): <ScrollViewer> <StackPanel> ....First item ....Second item ....Third item ....Etc. </StackPanel> <ScrollViewer> Here is the problem, I wish to simulate the functionality of programs like word, where if I am dragging selected content (or an object) outside the viewable area, the window will scroll in the direction of the mouse to see more places to drop my nifty little object. ...i.e. If I move the mouse to the top of my ScrollViewer while dragging a stackpanel's contents, I want the scrollviewer to slowly move up so I can see more locations to drop my content. Any suggestions? If you can help me solve this, you will be a godsend!

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• How to correctly add the .scrollTo plugin?

  - by konzepz

  I have this script, running on a links list: $('li#linkcat-25 a').bind('click', function (e) { e.preventDefault(); $('#preview').load($(this).attr('href')); $('#loading').show('fast'); $('#preview').hide('fast'); $('#preview').show('fast'); $('#loading').hide('fast'); }); How can I easly add a .scrollTo effect, so that clicking on one of those href elements will show/hide as proposed, and when finished, will smoothly scroll down to the #preview div? Thank you!

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• Scrolling textboxes programmatically using WndProc messages.

  - by Hannes Nel

  Hi, I'm trying to scroll a textbox using the form's WndProc method. The code I've come up with so far, after scouring the internet, looks like this: private void ScrollTextBox() { scrollMessage = Message.Create(TabContents.Handle, 0x00B6, new IntPtr(0x0003), new IntPtr(0x0000)); this.WndProc(ref scrollMessage); } where TabContents is a TextBox. For some reason, nothing happens when i call this method. I'd like to know why. I realise that i can accomplish the same with the MoveToCaret method, but I'm curious why this is not working.

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• Vertical mouse scrolling wheel not working in VS 2010 Ultimate

  - by Robert

  The title says it all. I tried it with two different mice- both of which work perfectly fine in all other applications. The mouse is MS Intellimouse Optical. I even tried to speed up the vertical scroll through the mouse utility and still nothing. It barely moves the code a tiny bit and then it stops. I had no problems at all with VS 2008 which is concurrently installed in the same machine. Am I the only one having this???

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• Software to Tune/Calibrate Properties for Heuristic Algorithms

  - by Karussell

  Today I read that there is a software called WinCalibra (scroll a bit down) which can take a text file with properties as input. This program can then optimize the input properties based on the output values of your algorithm. See this paper or the user documentation for more information (see link above; sadly doc is a zipped exe). Do you know other software which can do the same which runs under Linux? (preferable Open Source) EDIT: Since I need this for a java application I will now invest my research in java libraries like jgap. Other ideas and links would be appreciated!

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• jQuery.ajax checking if there is already another xhr

  - by digitalFresh

  I have a page when, if the user is near the bottom of the page, loads the next page. I just recently switched it to jQuery, and now use the jQuery.ajax() function to get the data. However, now i cannot check if the xhr is already loading, making the page load multiple xhrs when the user near the bottom. My listener is: $(document).scroll(function () { if(/* scrollbar is near bottom */) loadxhr(dat++); //function that calls jQuery.ajax() } }); Basically, can you track the readyState of the call in a global scope?

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• Aligning data in a table

  - by Hulk

  In the following table, how do I align the data in td cells such that we do not get a horizontal scroll bar, using CSS? <table> <tr><th>name</th> <th>info</th></tr> <tr><td>Harry</td> <td>suminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfosuminfo<td></tr> <tr><td>test</td><td>test data</td></tr> </table>

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• What is a good way to animate UIViews inside UITableViewCell after a callback?

  - by erotsppa

  We couldn't find a way to animate UIViews inside a UITableCell as an action from a callback. Suppose in a scenario where you click on a button on the UITableViewCell and it fires off an asynchronous action to download a picture. Suppose further that when the picture is downloaded we want a UIView in the cell to animate the picture to give user a visual feedback that something new is about to be presented. We couldn't find a way to track down the UIVIew to invoke beginAnimation on because the original cell that the user clicked on might now be used for another row due to the nature of cells being reused when you scroll up and down in the table. In other words we can't keep a pointer to that UITableViewCell. We need to find another way to target the cell and animate it if that row is visible and don't animate if the row is scrolled out of range.

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• UITableView, force to snap to whole UITableViewCell at top of table

  - by Adam Eberbach

  I have a need to make a UITableView only display whole cells at the top of the cell, so when the table is moved or scrolled it should animate to make a whole cell visible at the top of the table if it has happened to stop with a cell partially off the top. This can be easily done using visibleCells and scrollToRowAtIndexPath methods of UITableView, BUT the cell should not always scroll down to move the partial cell into view - if the cell at top is more than 50% gone it should go completely with the next cell (i.e. index 1 in the array returned by visibleCells) moving to the top of the table. I've tried a few things to make this happen but I don't think I am understanding the way frame and bounds work between a UITableView and its UITableViewCells. Any help?

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• How to get scrollTop of page afer browser scrolled such page?

  - by Marco Demaio

  I know how to get the scrollTop of a page, I use this simple JS function (code copied around): function GetScrolledTop() { //I never work in IE quirkmode, I always use DOCTYPE as 1st line, so I don't need to test for document.body.scrollTop return self['pageYOffset'] || document.documentElement.scrollTop; } This works and my problem is the following: I tried to add it in the page onload event <body onload="alert(GetScrolledTop());"> On page load I get ZERO (which make sense), but the problem is that I get ZERO even if I scroll the page and then reload it without touching the scrollbar. It seems like the browser does: loads page calls my GetScrolledTop() (so obviously shows ZERO) then scrolls the page to where it was before. Do you know how to get the scolledTop after the step 3? I mean how to get the scrolledTop AFTER the browser scrolled the page? (maybe without using a timer) Thanks!

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• Why does the JavaScript need to start with ";" ?

  - by TK

  I have recently noticed that a lot of JavaScript files on the web starts with ; immediately following the comment section. For example, this jQuery plugin's code starts with /** * jQuery.ScrollTo * Copyright (c) 2007-2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com * Dual licensed under MIT and GPL. * Date: 9/11/2008 .... skipping several lines for brevity... * * @desc Scroll on both axes, to different values * @example $('div').scrollTo( { top: 300, left:'+=200' }, { axis:'xy', offset:-20 } ); */ ;(function( $ ){ Why does the file needs to start with ;? I see this convention on server-side JavaScript files as well. What is an advantage and disadvantage of doing this?

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