close all

This is a discussion on close all within the Windows Programming forums, part of the Platform Specific Boards category; I'm trying to add a close all command to my text editor. I have tried putting the below code in ...

  1. #1
    Registered User
    Join Date
    Aug 2001
    Posts
    380

    close all

    I'm trying to add a close all command to my text editor. I have tried putting the below code in the WndProc and MDIProc but nothing happens. Where does it go?
    Code:
    const char g_szChildClassName[] = "myMDIChildWindowClass";
    case CM_CLOSEALL:
       {					
          HWND hwnd = FindWindow(g_szChildClassName,NULL);
          SendMessage(hwnd, WM_CLOSE, 0,0);
       }

  2. #2
    erstwhile
    Join Date
    Jan 2002
    Posts
    2,227

  3. #3
    Registered User
    Join Date
    Aug 2001
    Posts
    380
    Thank you.

    How do I get the handle of the child to be closed? In the code below am I using the WM_MDIDESTROY correctly?
    Code:
    case CM_CLOSEALL:
       {					
          HWND hChild;
         while(hChild = (FindWindow(g_szChildClassName,NULL)) != NULL)
            SendMessage(hwnd, WM_MDIDESTROY, hChild,0);
       }

  4. #4
    erstwhile
    Join Date
    Jan 2002
    Posts
    2,227
    Typically, EnumChildWindows is used to iterate through the mdi child windows - the child window handle is passed as a parameter to the EnumChildProc callback procedure.

    There is an example of its use in this thread, courtesy of Fordy.

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