The default positioning is centered - except that if it appears you are running on a dual display system, it is centered on the display where the mouse currently is. (Some quesswork is involved here). If the positionioning mode is set to "under mouse" then that is where the dialog is positioned.
If more then $DtclTkDialogMaxWins (30) dialogs have appeared with no more then 2 second separations, then the dialog will NOT be displayed - a warning dialog is generated and the window name written to stderr.
Use the DtclTkDialogPositionSetUnderMouse or DtclTkDialogPositionSetCenter commands to change the positionioning mode.
|>||window||tk_window||The name of the dialog top-level window.
Click here for the DRAMA home page and here for the AAO home page.For more information, contact firstname.lastname@example.org