After initializing a DDF buffer with DdfInitialize, the example uses DdfSetTextAlign to specify left justified test in the DDF buffer when formatting is OFF. The example then uses DdfSetFormat to turn off formatting for text in the DDF buffer (corresponds to the IPF lines tag). For a more detailed example and discussion of initializing DDF, see the DdfInitialize sample.

#define INCL_WINWINDOWMGR       /* General window management    */
#define INCL_WINMESSAGEMGR      /* Message management           */
#define INCL_GPIPRIMITIVES      /* Drawing Primitives/Attributes*/
#define INCL_DDF                /* Dynamic Data Facility        */
#include <os2.h>
#include <pmhelp.h>

MRESULT WindowProc( HWND hwnd, ULONG ulMsg, MPARAM mp1, MPARAM mp2 )
{
   HWND   hwndParent;
   HWND   hwndInstance;    /* help instance window                 */
   HDDF   hDdf;            /* DDF handle                           */

    switch( ulMsg )
    {
    case HM_QUERY_DDF_DATA:
        /* get the help instance */
        hwndParent = WinQueryWindow( hwnd, QW_PARENT );
        hwndParent = WinQueryWindow( hwndParent, QW_PARENT );
        hwndInstance = (HWND)WinSendMsg( hwndParent, HM_QUERY,
                                 MPFROMSHORT( HMQW_INSTANCE ), NULL );

        /* Allocate 1K Buffer (default)  */
        hDdf = DdfInitialize(
                    hwndInstance,  /* Handle of help instance */
                    0L,            /* Default buffer size     */
                    0L             /* Default increment       */
                    );

        if (hDdf == NULLHANDLE)       /* Check return code       */
        {
           return (MRESULT)FALSE;
        }

        /* left justify text when formatting is OFF */
        if (!DdfSetTextAlign(hDdf, TA_LEFT))
        {
           return (MRESULT)FALSE;
        }

        /* turn formatting OFF */
        if (!DdfSetFormat(hDdf, FALSE))
        {
           return (MRESULT)FALSE;
        }

        if (!DdfText(hDdf,
                "Format OFF: This text should be Left Aligned!\n"))
        {
           return (MRESULT)FALSE;
        }

        return (MRESULT)hDdf;
     }
     return WinDefWindowProc( hwnd, ulMsg, mp1, mp2 );
}