Message processing in dialog based application

[michael_green]

Hi All,

I don't understand how to process messages in a dialog based application. Specifically, I want to pick up and work with a WM_NOTIFY message from a list view control and go on to use the lparam of that message. It's the sort of thing that's done easily in a pure Win32 application, but I can find no examples and no hints as to how it should be done in a simple dialog based application.

Many thanks in advance for any help,

Mike

[tropfen]

Hello,

uselly a source like the one below will help.

integer*4 function DataInputProc( hDlg, message, uParam, lParam )
integer     hDlg        ! window handle of the dialog box
integer     message     ! type of message
integer     uParam      ! message-specific information
integer     lParam
include 'resource.fd'

    select case (message)
      case(WM_NOTIFY)
         if( lParam == IDC_DataInputList) then      
               .....
               DataInputProc = 0
               return	  
         end if
! or
         if( loword(lParam) == IDC_DataInputList) then      
               .....
               DataInputProc = 0
               return	  
         end if
    end select  

    DataInputProc = 0 ! Didn't process the message
    return
end 

Frank

[Jugoslav_Dujic]

I assume Mike asked about IFLOGM-based applications. In that case, your options are:

1) Subclass the dialog, as in MenuDialog sample, and proceed with a combination of Frank's and my code in the dialog procedure.

2) Download and install Xeffort, and replace USE IFLOGM with USE XFLOGM; the rest of the code should be compilable and running, possibly with minor tweaks. It has native support for list-view controls (see the docs), and, even if it's not enough, you can easily install all WM_COMMAND/WM_NOTIFY callbacks (e.g. for a TreeView) using XSetCommand.

[michael_green]

Thanks Guys, that stuff about Subclassing was exactly what I needed to know. My program now works fine.

But this kind of thing highlights a frequent problem of mine - how do I find out about these more esoteric functions and is there a book or online resource where I can actually learn about the way Windows works?

Thanks again

Mike

[Jugoslav_Dujic]

Well, it's a huge topic, and there's plenty of code and tutorials around the net, so it's difficult to see the forest from the trees. Apart from MSDN (or whatever they call it these days), I'd recommend the basic tutorial on winprog, as well as a number of topic-specific ones at Catch-22. They're mostly in C, of course.