Delphi .proj file missing .dpk file - delphi

I recently got project in delphi which I need to rearange, I'm totally new in delphi so I'm searching my way in environment and language. Question, in my project group I have two files with .dproj extension, no corresponding .dpr file so when I try to load them I got msg:
"Canot open file xxxx.dpk, system cannot find the file specified"
Did the old programmer forgot to copy all files so I'm missing this, or is this some kind of file (.dproj) that I only add as a reference so I don't need to have corresponding .dpk or .dpr file??

The .dpk file is the top level Pascal source file for a package. It is the package equivalent of an application project's .dpr file.
The original developer should have supplied it to you. Ask them to do so.

Related

Delphi package compiles without the finding the unit file of a referenced type?

Today I'm trying to figure out why something works when I think it should be broken.
I have little Delphi experience, and I've inherited a Delphi codebase and am setting up a machine where it will be maintained and compiled. I have a package that compiles successfully but can't figure out how it is resolving one of the types. My understanding is that when you use a unit, you must either
Include the source file in your package directly
Resolve the source pas or dcu file on your project search path
Resolve the source pas or dcu file on your IDE library path
None of these appear to be happening, and yet the package compiles. How else could this be compiling successfully?
Details
I have 'base' package that has a direct include on the file THotLog.pas. The file appears under the project's Contains folder in Project Manager. THotLog is NOT one of the components in the package, it is not in the register procedure for base package.
I then have 'consuming' package that requires base package. Consuming package has several components with THotLog members, and consuming package compiles. This surprises me, because I thought consuming package would have to be able to locate THotLog.pas or THotLog.dcu.
This is for RAD Studio 10.1. The project search path (Project > Options : Search path) is empty, and the IDE search paths (Tools > Options , then Environment Options > Delphi Options > Library) do not include where THotLog is.
I've also tried renamed all THotLog files on the hard drive and consuming package still compiles.
Hypothesizing that my understanding about type resolution is wrong, I tried making a set of sample projects with a similar layout and the sample consuming package cannot resolve sample THotLog without locating the pas or dcu file.
When you build a Delphi package, the compiler/linker creates a Compiled Package File named [package-name].dcp. It is a binary file containing all of the compiled units included in that package.
Compiling your "base" package created a [base-package].dcp file that is visible to the "consuming" package. The "consuming" package is referencing the base-package in its "Requires" section; this is the link to the base package's DCP file.
Delphi Compiled Package File

Unable to open or even add Resource files in my Delphi 7

Every single time i either try to open or add a resource file to my project or just open it within delphi it will throw me an error (I have tried .rc,.res,.rc..all kinds of extensions) and it will say that the file has been truncated or that Delphi cannot open or add this type of file. any ideas?
You cannot open a .res file in the Code Editor, as it is a binary file. You can open an .rc file, as it is a plain text file.
You can certainly add both .rc and .res files to a project, though. The IDE should not complain about that.

Delphi .PAS code reverts to the previous code after compile/build

I have a .BPG project which has a collection of .DPR project files.
Opened a .PAS file
I changed some line of code in a .PAS file of an project.
Saved it
After changing the source code, I tried COMPILE on that project.
First it says "Compiled" successfully.
Now I see the same .PAS file, the changes were lost. Codes changed at step 2 was lost. It is having the previous code only.
The behavior is same for BUILD too.
Anyone knows about this problem?
Thanks in advance.
Update
One more hint:
.DPR Project Name is XX.dll In IDE, there is one file with name XX_TLB.PAS in that project. In this file only I tried to change some code, which got reverted after compiling/building. Now I tried to rename this file, which gave me a error message
Type Libraries must have the tlb extention.
Also can the .DCU and .PAS files be in the same directory? I entered this directory (where both .PAS and .DCU files exist) into the directories list under "Tools->Options->Delphi Options->Library - Win32"
XX_TLB.PAS files are protected files. Do not edit such files directly. In fact there is note on top of the file warning you from editing the file.
They are regenerated each time the type library is refreshed.
See Code Generated When You Import Type Library Information.
This refresh could be done by the IDE each time you compile/build your dll.
You will never edit this file because of the dependencies of a type library and registered com objects. Either you change the com object itself via the type library editor, or create a new unit that interacts with your ActiveX class.
The Delphi IDE doesn't undo changes, as a general rule. There's notable exception. When you create an empty event handler, and then save the source file, the IDE will remove that event handler. Perhaps that's what is happening.
The other possibility that occurs to me is that you have multiple copies of the file. I've known the following to happen:
You create a package containing Unit1.
You install the package.
You then make another project that contains a different Unit1. Perhaps a copy of the file in a different location, so that it looks like the same unit.
You then modify the copy of Unit1, but the IDE sometimes prefers to open the file from the package.
The bottom line is that beyond deleting empty event handlers the IDE won't undo your changes. So it seems extremely likely that you have multiple copies of the file. To get to the bottom of this, you need to get the full path to the file. In the IDE, hover over the tab with the filename and the IDE will display the full path in a hint. I suspect you'll find that you have two distinct files.

Where does Delphi store directory and conditional-define settings for a project?

In which file will the "Project-->Options-->Directories/Conditions" details get stored? Is it in build.dat or in project_name.dof?
I have no idea where you find a build.dat but configuration details get stored
in your .dof file
in a .cfg for command line compilation.
Look here for a complete list of all extensions used in a Delphi project.

recompile/rebuild Delphi 5 code using .dpr file

I am trying to recompile/rebuild an old application program developed on Delphi5. I used the same Delphi5 software on an XP computer.
I did some minor corrections to the codes of a couple of forms and units. When I recompile using the .dpr file it comes with a fatal message: File not found System.pas
I added in .dpr file on the link path to this file BP folder. No success and the same message. Any clue will help.
Probably Library Path is broken after running some buggy component installer. In modern IDE's look for Tools -> Options -> Library -> Library Path from main menu (should be slightly different for Delphi 5).
System.dcu file lives in $(BDS)\Lib path for Delphi 2007.
The "File not found System.pas" error often isn't really because it can't find system.pas. It's some other problem that manifests as this error.
It can be:
Duplicate Path entries in the Library Path.
Too many entries in the Library Path - I think the limit is 99.
Path to a package in Library Paths too long.
Path to a package in Library Paths corrupt.
Environmental Variables not set correctly.
and possibly more if you Google "system.pas not found"
Marjan is right.
But also add ${DELPHI}\LIB\OBJ
If you still have a dcc32.cfg with the project, or a .cfg with the project, open it up to see if the settings in there are correct. Otherwise delete the .cfg or edit it to reflect the proper path to the bin and bin\obj directories.
A .dpr file is the main project file for a Delphi 2,3,4,5,6,7 project.
You have not given any details like WHAT WAY OF BUILDING SOMETHING of delphi you're using (the code is Delphi 5 level code, but you are not telling me for example, if you built the project inside the Delphi IDE or from the command line compiler DCC32), and what other files you have installed. You haven't mentioned if the library paths and so on are configured (either for the IDE, or for the command line environment, both of which are separate tasks).
An inability to find System.pas suggests to me that you might be running the command line compiler (Dcc32) instead of the IDE to build the project, and you have forgotten to mention that. That usually means you have to set up the Options (dcc32.dof) file for Delphi, so that command line building with Dcc32 can work.
What exactly do you mean by "When I compile with the .dpr file"? Instead of making people guess, show the commands you typed, exactly, and the error message, exactly. If it helps, use screenshots or text grabs.

Resources