To play w/ GPI and listbox programming I created a client window and
placed a graphical area in the majority of the window and in the
remaining small area I placed a small listbox.

The graphics area is just sin/cos/tan functions in different colors, and
the listbox just contains the degrees 0 - 360.  I select 1 to 'n' items
in the listbox and double click; that range is highlighted in white
on each of the functions curves.  No real use, just an exercise.

However, when I minimize the window, and then re-display it, the listbox
is not shown.  If I put the cursor where the scroll bar button s/b and
drag it through to the bottom, each entry appears, as does that portion
of the scroll bar.

I have tried WinShowWindow (hwndList, TRUE) and a couple of other things
w/out success.  I create it:

  // Create the list-box window
  hwndList   = WinCreateWindow (hwndFrame,      // Parent window
                                WC_LISTBOX,     // Class name
                                NULL,           // Window text
                                  WS_VISIBLE     |
                                  LS_MULTIPLESEL |
                                  LS_EXTENDEDSEL |
                                  MLS_READONLY   |
                                  MLS_VSCROLL,  // Window style
                                listPosX,       // Position: x
                                listPosY,       //           y
                                listWidth,      // Size: width
                                listHeight,     //       height
                                hwndClient,     // Owner window
                                HWND_TOP,       // Sibling window
                                ID_LISTBOX,     // Window id
                                NULL,           // Control data
                                NULL) ;         // Presentation parms

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 X OLX 1.53 X C:\DOS\RUN    C:\WINDOWS\CRAWL    C:\OS2\FLY

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