Opening Delphi project files - Any downside of opening DPR instead of existing DPROJ file?

delphi delphi-xe2
Darian Miller picture Darian Miller · Dec 6, 2012 · Viewed 13.2k times · Source

By default, the file extension descriptions for .DPR and .DPROJ are the same, so in Explorer when opening a project file with the same base name, both file descriptions are listed as "Delphi Project File" This presents a choice to the developer - which file to open?

I typically open the second file listed, assuming it's the DPROJ.

Are there any downsides of opening a DPR when there is a corresponding DPROJ file on file? Does the IDE handle this gracefully?

I sometimes open the first file listed and I haven't noticed any problems, but it's one of those curiosities remaining unanswered. I looked through the help and couldn't find anything.

Answer

Sir Rufo picture Sir Rufo · Dec 6, 2012

A *.dpr file contains delphi source and *.dproj contains the project configuration.

Opening one of them the IDE is looking for the other automatically.

Try to remove the *.dproj file and open the (remaining) *.dpr the IDE will inform you, that a new *.dproj file will be generated.

Do not try to remove the *.dpr :o)

Related questions

Why does CreateProcess give error 193 (%1 is not a valid Win32 app)

The code below fails to start documents. I get error 193 (%1 is not a valid Win32 app). Starting executables work fine. The files are properly associated, they start the corresponding app when double clicked. I have searched SO and elsewhere for …

Read More
Using Case Statement with String

Say i have a string 'SomeName' and wanted the values return in a case statement. Can this bedone? Can strings be used in a case statement like so Case 'SomeName' of 'bobby' : 2; 'tommy' :19; 'somename' :4000; else showmessage('Error'); end;

Read More
Delphi VCL styles tutorial - how to change the style at runtime

Is there a good VCL Styles tutorial where we see how to dynamically (in run time) load/change the style ? This should work with Delphi XE2 and up, since XE2 is the first version with VCL Styles.

Read More