Dealy a function.

This is a discussion on Dealy a function. within the C++ Programming forums, part of the General Programming Boards category; EDIT: I just saw I wrote Dealy instead of Delay in the thread name. Hello everyone. I know that I ...

  1. #1
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    Dealy a function.

    EDIT: I just saw I wrote Dealy instead of Delay in the thread name.

    Hello everyone.
    I know that I have been posting alot of questions here lately but for this question I cant find any other help.

    So anyway I have two functions, and I want one function to run, and then have the other one to run 2 seconds after the first one. The first thing I did was to use Sleep(2000);
    but for some reason that pauses the program at the beggining, The first function wont start either.

    Some of my code:
    Code:
    void functionone(HWND name)
    {
    SendDlgItemMessage(name,5,LB_ADDSTRING,0,(LPARAM)"Text One");	
    }
    
    void functiontwo(HWND name)
    {
    SendDlgItemMessage(name,5,LB_ADDSTRING,0,(LPARAM)"Text Two");	
    }
    void startfunc(HWND name)
    { 
    	functionone(name);
    	Sleep(2000);
    
    	functiontwo(name);
    }
    This startfunc is started when I press a button that I have(I'm using winApi).
    But the problem is that the first function wont start until 2 seconds after I press the button.
    Last edited by Danne; 01-14-2011 at 03:26 PM.

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    The first function is called.

    Then your whole program is put to sleep for two seconds.

    Then your second function is called.

    If you expect anything to happen in between any of those things (for instance, a message handler to receive and process your message), well, it won't.

  3. #3
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    Code:
    void functionone(HWND name)
    {
    SendDlgItemMessage(name,5,LB_ADDSTRING,0,(LPARAM)"Text One");	
    }
    
    void functiontwo(HWND name)
    {
    SendDlgItemMessage(name,5,LB_ADDSTRING,0,(LPARAM)"Text Two");	
    }
    void startfunc(HWND name)
    { 
    	functionone(name);
    
            UpdateWindow(name);
    
    	Sleep(2000);
    
    	functiontwo(name);
    }
    It will still block your program for 2 seconds but should show the text in the first window.

  4. #4
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    @tabstop:So the reason for the text not showing up is that the program pauses when the messages are being processed? Is there anything I can replace Sleep() with so that I can just delay the second function so that the messages from the first one gets recieved and processed before the second function is called?

    @commonTater: I am not sure that updating the window will work in the final code, as I am not just going to show text messages, but do other things too that needs to be delayed as well. if you understand what I mean.

  5. #5
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    I am not sure that updating the window will work in the final code, as I am not just going to show text messages, but do other things too that needs to be delayed as well. if you understand what I mean.
    If you want the text to show up right away, use UpdateWindow with the control's window handle in it... Otherwise there's no point delaying since you won't see anything until it's over, anyways.
    Last edited by CommonTater; 01-14-2011 at 03:18 PM.

  6. #6
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    Alright, I used UpdateWindow. Works great. thanks

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