Thread: Loop when inactive ?

  1. #1
    Registered User
    Join Date
    Nov 2002
    Posts
    10

    Loop when inactive ?

    Hi, I'm trying to create a program which checks to see if another program is running and if it is, shut it down.

    It's working as long as I keep the program in focus, but when it loses focus the loop holds I guess.


    Code:
    while(GetMessage(&Msg, hWnd, 0, 0) > 0)
    	{
    		static HWND hIexplore;
    		
    		TranslateMessage(&Msg);
    		DispatchMessage(&Msg);
    
    		hIexplore = FindWindow("IEFrame", "Session control window - Microsoft Internet Explorer");
    		
    		if(hIexplore != NULL)
    		{
    			
    			SendMessage(hIexplore, WM_DESTROY, 0, 0);
    			SendMessage(hIexplore, WM_NCDESTROY, 0, 0);
    
    		}	
    	}

    Is there a way to make the loop run while minimized ?
    Or am I doing it the wrong way ?

  2. #2
    Registered User Codeplug's Avatar
    Join Date
    Mar 2003
    Posts
    4,981
    That's because you window has to recieve messages so your code will run.
    Don't do the work inside your message loop. Create a timer and handle the WM_TIMER message in your window proc.

    This article will help as well.

    gg

  3. #3
    Registered User
    Join Date
    Nov 2002
    Posts
    10
    Everything working as intended now, thank you

  4. #4
    train spotter
    Join Date
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    Or use PeekMessage()

    This checks to see if there is a message for your app. If not it returns allowing you to poll for the other app.

    GetMessage() will not return from the OS until there is a message for your app.

    CPU useage will be near 100% though unless you check the rate (ie limit frame rate)
    "Man alone suffers so excruciatingly in the world that he was compelled to invent laughter."
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