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  • doublebuffering not reducing the flicker

    - by fishhead
    I am drawing an grid-work of objects in a Panel. when I scroll the the panel quickly I get a flicker. I thought that enabling the double buffering may take care of this but what I find is that it does not completely draw everything and I am left with blank sections. could anyone give me suggestions as to what may be happening and how I might correct it. UPDATE: I found that I was creating the graphics object with Creategraphics() rather than using the Parameter in the paint method

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  • Python - how to check if weak reference is still available

    - by Alex
    Hi all, I am passing some weakrefs from Python into C++ class, but C++ destructors are actively trying to access the ref when the real object is already dead, obviously it crashes... Is there any Python C/API approach to find out if Python reference is still alive or any other known workaround for this ? Thanks

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  • simple question of pushViewController

    - by user217572
    messagecontroller is nothing but object of initialize nib file. [self.navigationController pushViewController:messageController animated:YES]; this statement executes in normal condition this statement also works on state maintainace testing , this line executes properly but not open new view ,why?

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  • Why can't I access the instance.__class__ attribute in Python?

    - by froadie
    I'm new to Python, and I know I must be missing something pretty simple, but why doesn't this very, very simple code work? class myClass: pass testObject = myClass print testObject.__class__ I get the following error: AttributeError: class myClass has no attribute '__class__' Doesn't every object in Python have a __class__ attribute?

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  • variables reference value of string

    - by xdevel2000
    How can I get the reference value of a string object? If I hava a class like class T() { } T t = new T(); System.out.println( t); print out T@a3455467 that is the reference value inside t but for string? maybe with method hashCode()??

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  • Having an issue while trying to implement In-App Purchase

    - by Raymond
    This is my first time to implement In-App purchase and I am using the tutorial located here: Ray Wenderlich Now I am sure this is something simple, but I am having issues figuring out, so I figured I would ask all of the gurus out here. The compiler is saying that _products is Use of undeclared identifier - (void)productPurchased:(NSNotification *)notification { NSString * productIdentifier = notification.object; [_products enumerateObjectsUsingBlock:^(SKProduct * product, NSUInteger idx, BOOL *stop) { if ([product.productIdentifier isEqualToString:productIdentifier]) { *stop = YES; } }]; }

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  • How to cancel a touch sequence

    - by Alex
    I have an UIImage view that responds to touch events. I want to cancel the touch sequence if the touch goes outside of certain bounds. How can I do that? I know that I can inspect the coordinates of the touch object, what I don't know is how to cancel the sequence. I don't see any event in the API that allows for that.

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  • See anything wrong with this JSON2 push/stringify?

    - by nobosh
    dynamictextareas.push({guideid:targeteditorID, guideitemtext : textareacontents }); alert( JSON.stringify(dynamictextareas) ); See anything wrong with this JSON2 javascript code? For some reason this come is making a mess of things. I want to push: <p>DDDDDD</p> But instead it's pushing: [{"guideid":"1","guideitemtext":"<p>\u000a\u0009u000au0009DDDDDD</p>\u000a"}] Any ideas? Is there a better way I can build this JSON object?

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  • [iPhone app] Detecting which key has been pressed in UITextField

    - by Dough
    Hi, I have an UITextField object in my view and want to launch a method when user press backspace button and textField is empty. First I have to do is to create a cursor storing text length, so when cursor changes from 1 to 0 there is nothing to do. The only way to launch the method is when text length is 0 - press backspace - remain to 0. How to catch the event of pressing the backspace key in my UITextField ? Thanks in advance !

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  • Hibernate Lazy Loading Proxy Incompatable w/ Other Frameworks

    - by bowsie
    I've come across several instances where frameworks that take POJOs to do some work crap-out with proxied hibernate beans. For example if I xml annotate a bean for framework X and pass it to framework X it doesn't recognise the bean because it is passed the proxied object - which has no annotations for framework X. Is there a common solution to this? I'd prefer not to define the bean as eager loaded, or turn of lazy-loading anywhere in the application. Thoughts? Thanks.

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  • Covariance and contravariance real world example

    - by Sir Psycho
    I'm having a little trouble understaing how I would use covariance and contravariance in the real world. So far, the only example's I've seen have been the same old array example. object[] objectArray = new string[] { "string 1", "string 2" }; It would be nice to see an example that would allow me to use it during my development if I could see it being used elsewhere. Can anyone point me to some useful resources?

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  • How to disable ToolStripMenuItem in Context menu Dynamically?

    - by NIGHIL DAS
    In my windows application i have a context menu with a grid the problem is that I want to disable the ToolStripMenuItem in context menu according to the user previlages.How can i do that. i have done like this but it is not working private void contextMenuStrip_Machine_Opening(object sender, CancelEventArgs e) { toolStripAuthorize.Enabled = INFOpermission.accessAuthorize; } but it is not working

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  • How do I get the "bucket id" that winqual uses if I have a minidump file or exception structure? (Windows c++)

    - by Tim
    There are a few related questions on SO - but have not found the answer - I would like to generate a "signature"/bucket id to report a minidump/crash back to our issue tracking system. Since MS already does this with "bucket ids" I figured I could just re-use their bucket/signature generation. Can I get that ID from either a top level filter or the _EXCEPTION_POINTERS object I have inside the filter or the _MINIDUMP_EXCEPTION_INFORMATION structure or from the minidump itself? This is a C++ application.

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  • Get attribute of JQuery ui.draggable

    - by Jon
    Hi Everyone, I'm using JqueryUI for drag and drop on one of my pages and for some reason I can't seem to get an attribute of the ui.draggable object being passed into my droppable drop event. ui.draggable.attr("src") and $(ui.draggable).attr("src") both return undefined, however if I type ui.draggable.html() I will get the html back. Any ideas?

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  • Preventing comboBox keyboard selection

    - by Cornel
    As you now the user can select an item from the comboBox by keyboard directly. By mouse I block the user to select some items depending on the behind object state. What's the best solution to stop this when the user uses the keyboard?

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  • Instantiate a model when the kind of model needed is represented as a string argument

    - by indiehacker
    My input data is a string representing the kind of datastore model I want to make. In python, I am using the eval() function to instantiate the model (below code), but this seems overly complex so I was wondering if there is a simpler way people normally do this? >>>model_kind="TextPixels" >>>key_name_eval="key_name" >>>key_name="key_name" >>>kwargs {'lat': [0, 1, 2, 3], 'stringText': 'boris,ted', 'lon': [0, 1, 2, 8], 'zooms': [0, 10]} >>>obj=eval( model_type + '(key_name='+tester+ ',**kwargs )' ) >>>obj <datamodel.TextPixels object at 0xed8808c>

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  • RSA PKCS1 implementation in Python

    - by user307016
    I'm working on the RSA PKCS1 implementation in Python,here's the message block i got: m = [0,2,random paddings,0,message integers] I read the RFC2313,and get a equation seems for transforming the message block object into an big-edian integer. I just get confused about how to transform it in Python. Any help would be appreciated.

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  • Where to locate the unattend.xml schema

    - by Adam Driscoll
    I'm in need of a way to modify an unattend.xml file programmatically. It would be great if I could just serialize to and from an object. But to do so I would need to get a hold of the schema so that I can run it through XSD. The referenced link provides all the possible settings but it would be nice to have it in XSD format. Any ideas?

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  • Horizontal scrolling in a wx.RichTextCtrl

    - by Sam
    I have a RichTextCtrl created as follows: self.userlist = wx.richtext.RichTextCtrl(self, style=wx.TE_MULTILINE|wx.TE_READONLY|wx.HSCROLL) It all works fine, except for the wx.HSCROLL style. If I change the RichTextCtrl to a regular TextCtrl, it correctly horizontal scrolls on long lines, rather than wrapping, but on the RichTextCtrl it wraps regardless. Is there an easy way to make it scroll horizontally? (I do, unfortunately, need the RichTextCtrl's featureset for this object.)

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