DFM File: What is it?

Researcher:   |   Updated: November 26, 2018

Microsoft Silver

DFM File Summary

Most DFM files can be viewed with eight known software applications, typically Notepad++ developed by Don Ho. It's main file type association is the Pascal File format, but also includes seven other rarely-seen file types. The majority of DFM files are considered Text Files, but they can also be Data Files or Developer Files.

The DFM File Extension can be viewed on the Windows, Mac, and Linux operating systems. They are supported on both desktop and mobile devices. The main DFM file type has a Popularity Rating of "Low", meaning these files are not frequently present on your typical desktop or mobile device.

To learn more about DFM files and their associated software applications, please see the information below. Plus, we provide a basic troubleshooting guide to solve problems with opening DFM files.

Low
Prevalence
6997
Ranking

/ 11690

Active

Importance

26

November

2018

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Known DFM Files

  8 known file types use this extension

Principal DFM Type

.DFM
Formatting:.dfm
Class:Pascal File

INC file stores various data used for programming applications developed by Pascal programming language and development environments.

Created by: Open Source
Division:Text Files
Folder: HKEY_CLASSES_ROOT\.dfm

Software Programs That Open The Pascal File:


Notepad++ by Don Ho

Windows
Mac
Linux

ExtendScript Toolkit (ESTK) by Adobe Systems Incorporated

Windows

Secondary DFM Associations

.DFM
Formatting:.dfm
Class:Midas ViewPoint Display Form

A form made using Midas ViewPoint; an object orientated audio-visual data display channel editor as well as a player. It is used to control the way information is displayed on screens. It stores ViewPoint display objects as well as related display forms.

Created by: Sentel Advance
Division:Data Files

Software Programs That Open Midas ViewPoint Display Form Files:


Sentel Advance Midas ViewPoint by Sentel Advance

Compatible with:

Windows
.DFM
Formatting:.dfm
Class:Delphi Form

The file stores the properties of objects stored in a Borland Delphi form. It can be stored in text or binary format (as chosen by the user in the Environment Options). Data from the files is loaded in the final executable file.

Created by: Embarcadero Technologies
Division:Developer Files

Software Programs That Open Delphi Form Files:


Delphi (IDE) by Embarcadero Technologies

Compatible with:

Windows
iOS
Android
OS X El Capitan
.DFM
Formatting:.dfm
Class:Data Flow Diagram Model (Prosa)

The file is related to a DFD (Data Flow Diagram) also known as Process Model. Process Modeling is a technique used for capturing the flow of inputs through processes to their output. The model has the symbols; process, data flow, external entity, and data store.

Created by: Unknown Developer
Division:Data Files

Software Programs That Open Data Flow Diagram Model (Prosa) Files:


Unknown Software by Unknown Developer

Compatible with:

Windows
.DFM
Formatting:.dfm
Class:C++ Builder 6 Form File

The file extension is associated with forms made and stored in C++ Builder version 6. It is an old file type.

Created by: Embarcadero Technologies
Division:Developer Files

Software Programs That Open C++ Builder 6 Form File Files:


C++Builder by Embarcadero Technologies

Compatible with:

Windows
Mac
iOS
Android
.DFM
Formatting:.dfm
Class:Digital-FM File

The file extension is used for some type of Digital-FM audio format developed by R.Verhaag.

Created by: Radionomy
Division:Audio Files

Software Programs That Open Digital-FM File Files:


Unknown Software by Unknown Developer

Compatible with:

Windows
.DFM
Formatting:.dfm
Class:Autodesk Drawing Specific Settings

The file stores, ASCII text format, the drawing specific settings for applications developed by Autodesk.

Created by: Autodesk, Inc.
Division:Settings Files

Software Programs That Open Autodesk Drawing Specific Settings Files:


Autodesk AutoCAD Civil 3D by Autodesk, Inc.

Compatible with:

Windows
.DFM
Formatting:.dfm
Class:Help & Manual eBook Template

The file contains a template for eBook related to the Help & Manual Microsoft Windows software developed by EC Software.

Created by: EC Software
Division:eBook Files

Software Programs That Open Help & Manual eBook Template Files:


Help & Manual by EC Software

Compatible with:

Windows

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DFM Demand


Top Devices

Samsung (28.86%)
Apple (21.83%)
Huawei (9.25%)
Xiaomi (6.74%)
LG (3.11%)

Browser Rankings

Chrome (58.80%)
Firefox (11.05%)
Internet Explorer (9.04%)
Edge (8.46%)
Safari (3.87%)


Understanding DFM Issues


Common DFM Opening Problems

Notepad++ Isn't There

When trying to open your DFM file, you get the error "Can't Open DFM File Type". If this is the case, it's usually due to the fact that you do not have Notepad++ for %%os%% installed on your computer. This will prevent you from double-clicking to open the DFM file because the OS doesn’t know how to handle it.


Tip: If you have another software that you know opens DFM files, you can select it by hitting the "Show Apps" button.


Incorrect Notepad++ Version

Occasionally, you might have an outdated version of Notepad++ installed that's incompatible with your Pascal File type. Installing the latest version of Notepad++ from Don Ho is recommended. This issue mainly occurs when your Pascal File file was created by a newer version of Notepad++ than you have on your PC.


Tip: Investigate your DFM file by right-clicking and selecting "Properties" to find clues on what version you need.


Ultimately, most of the difficulties opening DFM files are due to having the wrong version of Notepad++ installed.


Other Causes of DFM File Opening Problems

Assuming you have the right Notepad++ version installed, other problems can prevent you from opening DFM files. There can be external issues inside of %%os%% that are causing these errors when opening DFMs. Problems unrelated to software:

  • Corrupt Windows Registry file path references for DFM
  • Accidental deletion of the description of the DFM file in the Windows registry
  • Defective install of a DFM program, such as Notepad++
  • Your DFM file is corrupted (issues with your Pascal File file itself)
  • Malware-tainted DFM file can't be opened
  • Device drivers for DFM-related hardware are out-of-date
  • Insufficient system resources to successfully open Pascal File files

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