Multi Tasking in VC++

Started by karthikn, Jul 19, 2008, 01:35 AM

previous topic - next topic
Go Down


Cooperative Multitasking: Yielding in the Message Loop

As I mentioned earlier, authors of most simple Windows applications do not have to worry about cooperative multitasking. The typical message loop, shown in Listing 12.1, takes care of this problem. Every time the application becomes ready to process a new message, it calls the Windows GetMessage function. GetMessage, in turn, may not return immediately; instead, Windows may perform a context switch and pass control to another application.

Yielding in the message loop.

int WINAPI WinMain(...)


    MSG msg;


    // Application initialization goes here


    // Entering main message loop

    while (GetMessage(&msg, NULL, 0, 0))    // This call yields!


        // Message dispatching goes here




Go Up

Quick Reply

With Quick-Reply you can write a post when viewing a topic without loading a new page. You can still use bulletin board code and smileys as you would in a normal post.

Warning: this topic has not been posted in for at least 120 days.
Unless you're sure you want to reply, please consider starting a new topic.

Note: this post will not display until it's been approved by a moderator.
Please leave this box empty:

Type the letters shown in the picture
Listen to the letters / Request another image

Type the letters shown in the picture:

shortcuts: alt+s submit/post or alt+p preview
IT Acumens Web Designing Chennai | GinGly :: Build your Personal Website | CineBuzz :: Cinema News | My Kids Diary :: Kids Memories Writing :: Book Website @ 349 Rs monthly
Copyright 2005 - 2020 :: IT Acumens :: All Rights Reserved. :: Sitemap
ITAcumens Discussion Forum with 2 lakhs post running for 15 years - Powered by IT Acumens Dedicated Server