Storing a Bit Map in a Metafile

You can draw bit maps in a metafile or segment by calling GpiWCBitBlt. The operating system converts this function to a drawing order. The target-rectangle dimensions that you pass to GpiWCBitBlt are in world coordinates, not device coordinates. The following figure shows how to draw a bit map in a metafile, and then play the metafile.

    DEVOPENSTRUC dop;
    HDC hdcMeta;
    HPS hps, hpsMeta;
    SIZEL sizlPage;
    HMF hmf;
    HBITMAP hbm;
    HAB hab;
    HWND hwnd;
    POINTL aptl[4];

    dop.pszLogAddress = NULL;
    dop.pszDriverName = "DISPLAY";
    dop.pdriv = NULL;
    dop.pszDataType = NULL;

    hdcMeta = DevOpenDC(hab, OD_METAFILE, "*", 4L,
                  (PDEVOPENDATA) &dop, NULLHANDLE);
    hpsMeta = GpiCreatePS(hab, hdcMeta, &sizlPage, PU_PELS | GPIA_ASSOC);

    hbm = GpiLoadBitmap(hpsMeta, NULLHANDLE, IDB_PATTERN, 16L, 16L);

    aptl[0].x = aptl[0].y = 0;  /* Lower-left corner target rectangle        */
    aptl[1].x = 150;            /* X coordinate upper-right target rectangle */
    aptl[1].y = 300;            /* Y coordinate upper-right target rectangle */
    aptl[2].x = aptl[2].y = 0;  /* Lower-left corner source rectangle        */
    aptl[3].x = aptl[3].y = 16; /* Upper-right corner source rectangle       */

    GpiWCBitBlt(hpsMeta, hbm, 4L, aptl, ROP_SRCCOPY, BBO_IGNORE);

    GpiAssociate(hpsMeta, NULLHANDLE);
    hmf = DevCloseDC(hdcMeta);

    hps = WinGetPS(hwnd);

    GpiPlayMetaFile(hps, hmf, 0L, NULL, NULL, 0L, NULL);

    WinReleasePS(hps);

You can also store a bit map in a metafile by calling GpiBitBlt. In this case, however, the bit map will be stored inside an escape order.