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  • Problems using wxWidgets (wxMSW) within multiple DLL instances

    Preface I'm developing VST-plugins which are DLL-based software modules and loaded by VST-supporting host applications. To open a VST-plugin the host applications loads the VST-DLL and calls an appropriate function of the plugin while providing a native window handle, which the plugin can use to draw it's GUI. I managed to port my original VSTGUI code to the wxWidgets-Framework and now all my plugins run under wxMSW and wxMac but I still have problems under wxMSW to find a correct way to open and close the plugins and I am not sure if this is a wxMSW-only issue. Problem If I use any VST-host application I can open and close multiple instances of one of my VST-plugins without any problems. As soon as I open another of my VST-plugins besides my first VST-plugin and then close all instances of my first VST-plugin the application crashes after a short amount of time within the wxEventHandlerr::ProcessEvent function telling me that the wxTheApp object isn't valid any longer during execution of wxTheApp-FilterEvent (see below). So it seems to be that the wxTheApp objects was deleted after closing all instances of the first plugin and is no longer available for the second plugin. bool wxEvtHandler::ProcessEvent(wxEvent& event) { // allow the application to hook into event processing if ( wxTheApp ) { int rc = wxTheApp->FilterEvent(event); if ( rc != -1 ) { wxASSERT_MSG( rc == 1 || rc == 0, _T("unexpected wxApp::FilterEvent return value") ); return rc != 0; } //else: proceed normally } .... } Preconditions 1.) All my VST-plugins a dynamically linked against the C-Runtime and wxWidgets libraries. With regard to the wxWidgets forum this seemed to be the best way to run multiple instances of the software side by side. 2.) The DllMain of each VST-Plugin is defined as follows: // WXW #include "wx/app.h" #include "wx/defs.h" #include "wx/gdicmn.h" #include "wx/image.h" #ifdef __WXMSW__ #include <windows.h> #include "wx/msw/winundef.h" BOOL APIENTRY DllMain ( HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { switch (ul_reason_for_call) { case DLL_PROCESS_ATTACH: { wxInitialize(); ::wxInitAllImageHandlers(); break; } case DLL_THREAD_ATTACH: break; case DLL_THREAD_DETACH: break; case DLL_PROCESS_DETACH: wxUninitialize(); break; } return TRUE; } #endif // __WXMSW__ class Application : public wxApp {}; IMPLEMENT_APP_NO_MAIN(Application) Question How can I prevent this behavior respectively how can I properly handle the wxTheApp object if I have multiple instances of different VST-plugins (DLL-modules), which are dynamically linked against the C-Runtime and wxWidgets libraries? Best reagards, Steffen

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  • [VIM] How to restrict operations to certain lines?

    - by Ayman
    I have to work some relatively huge code files. How do I restrict some operations like find-next normal-n and others to a certain function / block? How would I visually know if I'm within that block or outside it? Looking and line numbers seems awkward, specially that the line numbers I need to work with are generally 5 digits long!

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  • Using jQuery live() to initialize plugins?

    - by cxfx
    Using jQuery, what's the best way to automatically initialize a plugin on all current and future elements of a specific class? For example, say I want all <input type="text" class="datepicker" /> elements to have the jQuery UI Datepicker plugin, including any I might create at runtime. Essentially, I want to do something like this: $('.datepicker').live('create', function() { $(this).datepicker(); }); But, of course, there isn't a create event I can use.

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  • Stick element to bottom-right corner (AS3 - Adobe AIR)?

    - by Martti Laine
    Hello I'm creating a simple AIR app with resize-functionality. Of course i need to position a resize-arrow to the bottom-right corner. Here's my code: stage.addEventListener(Event.RESIZE, handleResize); function handleResize(e:Event):void{ resize_btn.y = stage.stageHeight-resize_btn.height; } This doesn't work, my button gets out of the window very quickly. How could I make this work? Martti Laine

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  • Parameterized include in Classic ASP with VBScript

    - by Thom Smith
    I want to write a function that will include an external file, much like Server.Execute, but will pass along parameters. I'm aware that Server.Execute will pass along query parameters, but I'd like to pass data more generally. For instance: ' main.asp MyInclude("external.inc", Array("mykey", "myval")) ' external.inc Response.Write mykey I doubt I can get quite that far without reading the external fine, twiddling it, and executing, but I'd like to get as close as reasonably possible. Also, if possible, I'd prefer avoiding using the query passing option for security reasons.

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  • wordpress widget prob

    - by codedude
    I am using widgets in my wordpress theme and I need to remove the: <div class="textwidget"></div> that appears around the widget's content. I am using this in my function.php file: if (function_exists('register_sidebar')) register_sidebar(array('name'='Church Address', 'before_widget' = '', 'after_widget' = '', 'before_title' = '', 'after_title' = '', )); but I need to remove the div from around the text widget's body. Is there some way to do this?

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  • to stop trigger in jquery

    - by Alexander Corotchi
    Hi everybody , I have an AJAX call, which is doing this call every 5 seconds and when the call "succeed " I have a trigger success: function (msg) { ... $('#test').trigger('click'); return false; }, ... But i need to do this trigger just once , the first time, not every 5 second ! Can somebody suggest me how to stop this trigger, or maybe to use another stuff to trigger this "click " Thanks!

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  • c declaring variables in blocks

    - by anon
    I know that in C++, I can declare variables pretty much everywhere. I recall once reading that in C, variables must be declared at the top of a function i.e. the following is invalid: void foo() { int good; if (...) { int bad; } } In the above code, is the declaraing of the bad varaible legal by C standards, or only legal due to a gcc extension? Thanks!

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  • 8086 programming using TASM: pc to pc communication

    - by Komal
    .model small .stack 100 .data .code mov ah,00h mov al,0e3h mov dx,00h int 14h back: nop l1: mov ah,03h mov dx,00h int 14h and ah,01h cmp ah,01h jne l1 mov ah,02h mov dx,00h int 21h mov dl,al mov ah,02h int 21h jmb back mov ah,4ch int 21h end this a pc to pc commnication receiver program.i would like to know why have we used the mov dx,00h function and what is the meaning of mov al,0e3h this ?

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  • TSQL Email Validation (without regex)

    - by Eric Z Beard
    Ok, there are a million regexes out there for validating an email address, but how about some basic email validation that can be integrated into a TSQL query for Sql Server 2005? I don't want to use a CLR procedure or function. Just straight TSQL. Has anybody tackled this already?

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  • Matching a value to JSON array values in jquery

    - by chrism
    I have a JSON array that looks like this: ['Monkey','Cheetah','Elephant','Lizard','Spider'] I also have a text input. I want to test whether the value of the input upon 'blur' is also in the array and if it is do something. Knowing a bit of python I tried something like this: var existing_animals = ['Monkey','Cheetah','Elephant','Lizard','Spider'] $('input').blur(function() { user_animal = $(this).val() if (user_animal in existing_animals) { alert('Animal already exists!') } }); So, how rookie is my mistake?

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  • linux kernel booting from my bootloader

    - by sp3tsnaz
    hi , i wish to load linux using my own bootloader .. preliminary research and google told me that i ll have to use start_kerne() function .. i want to ask how can i call start_kernel() from assembly .. i have already formatted my usb into ext3 and pasted the compiled kernel there .. now how can i start the linux kernel ? any help is welcome // Thankyou in advance Mohsin .

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  • boost::bind breaks strict-aliasing rules?

    - by Kyle
    Using Boost 1.43 and GCC 4.4.3, the following code boost::bind(&SomeObject::memberFunc, this, _1)); Generates the following warning boost/function/function_base.hpp:321: warning: dereferencing type-punned pointer will break strict-aliasing rules What's the correct way to eliminate these warnings without setting -fno-strict-aliasing?

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  • weird array syntax

    - by dnagirl
    I'm trying to figure how a function I've been given works -- or rather doesn't work. The problematic areas include array notation like this: $small[$end[$i]{0}] I think the idea is to append "0" to the value of $end[$i] and use that for the index of $small. But it doesn't work in PHP5.3. Is this a deprecated syntax and is it trying to do what I think it is?

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  • html source encode

    - by Joseph
    when I view source on my php page I get &quot; for a quote. But instead, I would like " to be used in the source code. I have no control over manually replacing it so Im wondering if there is a function to do such a thing.

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  • MDB2, Pear, Mysql error

    - by Kyle Hudson
    Hi Guys, I have PEAR, MDB2 and Mysql Driver installed however I keep getting: Fatal error: Call to undefined function: MDB2_Driver_mysql::_isNewLinkSet(). in /home/**/PEAR/MDB2.php on line 1937. The Server is CentOS I am stuck, any help would be appriciated. Thanks :)

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  • jQuery plugin validate() : apply plugin to ajax injected form

    - by pixelboy
    My issue here is quite simple : i'm trying to use the jQuery validate plugin to a form that gets injected after certain user actions. My problem mostly is that : I could use live support to bind the change event over inputs, like this $("#adresseLivraisonPro").live('change',function(e){ $("#adresseLivraisonPro").validate({ But this makes my form validated if and only if user changes inputs... How would you surround that problem ?

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  • Example about crypto/rand in Go

    - by nevalu
    Could put a little example about the use of crypto/rand [1]? The function Read has as parameter an array of bytes. Why? If it access to /dev/urandom to get the random data. func Read(b []byte) (n int, err os.Error) [1] http://golang.org/pkg/crypto/rand/

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  • Applying Domain Model on top of Linq2Sql entities

    - by Thomas
    I am trying to practice the model first approach and I am putting together a domain model. My requirement is pretty simple: UserSession can have multiple ShoppingCartItems. I should start off by saying that I am going to apply the domain model interfaces to Linq2Sql generated entities (using partial classes). My requirement translates into three database tables (UserSession, Product, ShoppingCartItem where ProductId and UserSessionId are foreign keys in the ShoppingCartItem table). Linq2Sql generates these entities for me. I know I shouldn't even be dealing with the database at this point but I think it is important to mention. The aggregate root is UserSession as a ShoppingCartItem can not exist without a UserSession but I am unclear on the rest. What about Product? It is defiently an entity but should it be associated to ShoppingCartItem? Here are a few suggestion (they might all be incorrect implementations): public interface IUserSession { public Guid Id { get; set; } public IList<IShoppingCartItem> ShoppingCartItems{ get; set; } } public interface IShoppingCartItem { public Guid UserSessionId { get; set; } public int ProductId { get; set; } } Another one would be: public interface IUserSession { public Guid Id { get; set; } public IList<IShoppingCartItem> ShoppingCartItems{ get; set; } } public interface IShoppingCartItem { public Guid UserSessionId { get; set; } public IProduct Product { get; set; } } A third one is: public interface IUserSession { public Guid Id { get; set; } public IList<IShoppingCartItemColletion> ShoppingCartItems{ get; set; } } public interface IShoppingCartItemColletion { public IUserSession UserSession { get; set; } public IProduct Product { get; set; } } public interface IProduct { public int ProductId { get; set; } } I have a feeling my mind is too tightly coupled with database models and tables which is making this hard to grasp. Anyone care to decouple?

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  • YUI 3 Selector for multiple class names

    - by Jasie
    Hello, I have a bunch of divs like this: <div class="bear"></div> <div class="dog"></div> How do I get a nodelist that includes all divs with class of bear and dog? I tried: Y.get(".bear .dog").each(function() { }); But it returns null. Anyone have any suggestions? Thanks!

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