The DFM.EXE utility program is used in conjunction with the Dialog Unit Definition dialog box, where the font metrics enumerated on a target display by the DFM.EXE utility program are registered.
You can enter a device label in the Device label field. This should be a descriptive label of the target device, because the label will be displayed in the Dialog Unit Limits Selection dialog box. The name of the dialog box font metrics file is entered in the .DFM filename entry field.
Once you have entered the necessary information and clicked on the Save button, the fonts for the display device will be enumerated on the target system and saved in the file specified. You can then register the file in the Dialog Unit Definition dialog box.