This application note only applies to DX4WIN version 9.

Sometimes windows in DX4WIN may disappear, and there is no obvious way to get them back. This can happen when changing monitors or adding a new one.

In July 2021, Kostas, SV1DPI provided a method to fix the problem in this post from the DX4WIN Reflector archives. It is also reproduced here (lightly edited).

  1. Go to File | Preferences and write your configuration file using File | Write configuration file
  2. Close (exit) DX4WIN
  3. Go to directory dx4w903\save
  4. Rename config.dat to config_old.dat
  5. Edit with Notepad (not with Word) the file config.txt which is in the dx4w903\save directory
  6. At the end of the file there are several sections with the first letter W (example: [W-BANDMAP]), looking something like:
    7. [W-BANDMAP]
HEIGHT=985
LEFT=1681
TOP=100
WIDTH=275
  7. Find the window you are interested in (see at the end for details which window is what), for example the Bandmap window is [W-BANDMAP]
  8. Change the value of Left and Top to zero (0). For example: 
    [W-BANDMAP]
HEIGHT=985
LEFT=0
TOP=0
WIDTH=275
  9. Save the config.txt file
  10. Run DX4WIN
  11. Go to File | Preferences and load the edited configuration file
  12. Using File | Load configuration file, load dx4903\save\config.txt (the file you just saved)
  13. Now the window opens on the left-upper corner. Move it where you want
  14. Write again (File | Preferences | Write Configuration file) your config.txt and keep it as a backup for the future.
  15. Don't forget to open your own log again because DX4WIN may have loaded the Samplelog!
  16. If something that you don't like happens, close DX4WIN, go to dx4w903\save directory and rename config_old.dat to config.dat

Windows Names and Codes

[W-BANDMAP] Bandmap window (right click | Bandmap in DX spots window)
[W-CALEN] Events calendar window
[W-CALL] Same call window
[W-CNTY] County window
[W-CTY] Country window
[W-CW] CW Keyboard window
[W-EXT] Callsign/Mgr lookup (QRZ window) typing F3
[W-FLDDX] CQ DX Field
[W-GRID] VUCC grid
[W-IOTA] IOTA window
[W-LOGB] Report: LogBook
[W-MASTR] Master Calls window
[W-MFIND] ?? QSO window in search mode??
[W-MMTTY] ? MMTTY Window
[W-PACK] Packet Window
[W-PSK31] PSK31 Window
[W-RTTY] RTTY Control panel
[W-SHFRE] ??
[W-SPOT] DX spots window
[W-STATE] WAS window
[W-SUN] Info window
[W-TALK] Talk messages and announcements window
[W-WORLD] World Map window
[W-WPX] WPX window
[W-ZONE] WAZ window
[W2-MAIN] Dx4win window
[W2-QSO] QSO window