[Pascal Error] E2223 $DENYPACKAGEUNIT 'UniGUIVars' cannot be put into a package

[micbasov]

Hi Farhad! My team is developing a large project on UniGui. We are faced with the fact that we can not divide the project in the BPL packages.

 

[Pascal Error] E2223 $ DENYPACKAGEUNIT 'UniGUIVars' cannot be put into a package.

[Farshad Mohajeri]

You must avoid including units that use "uniGUIVars" in a package. Probably you are trying to include a Form in your package. For this purpose you must create a "Free Form" instead of an "Application Form".

[eelias]

Hi There,

 

I made a project using UniGui based on frames.

 

I have only one Form, that is my main form, where I create my frames.

 

All my frames are inherited from one base frame.

 

Now I want to create packages to keep this frames, so I can update the packages and it be loaded dinamically by the main program.

 

The problem is that I got stuck on this DENYPACKAGEUNIT 

 

The answer above is not completelly clear to me, I have no idea what is a Free Form on UniGui.

 

Anyways, I need it to be a TFrame, and preferably an inherited frame. There is also a need to add a TDataModule.

 

can I have any direction on this?

 

Thank YOU!

[Farshad Mohajeri]

What are included in your package? Only frames?

[eelias]

I am trying to understand what is happening. 

 

I have made a minimal package, I have found the FreeForm, never saw it before.

 

THen I have created a Free Form, changed to Frame and it compiled and generated the package fine.

 

I have just placed a UniDBGuid and compiled fine also.

 

So, it seems the problem is the classes that I am using and that I want to convert to this new model.

 

My project is pretty complex, and I have to tell  you that UniGui is fantastic. I am doing pretty complex software with it. And it is stable.

 

Now I want to use my main code and menu system as a kind of platform where I can install frames.

 

However I have no Idea which units is allowed to that. Right now based on this post is says that UniGuiVars should not be added.

 

 

Looking further on my code I see that the DataModule was created with the following code:

uses
  UniGUIVars, uniGUIMainModule, MainModule;

function DMMainG: TDMMainG;
begin
  Result := TDMMainG(UniMainModule.GetModuleInstance(TDMMainG));
end;

Since it register the DataModule on the Initialization part.

 

I wonder if I could remove this dependancy? Since it is a regular Delphi TDataModule, what is the problem creating it directly? 

 

Each time a frame is created it asks for the DMMainG, to get the DataModule to work.

 

Right now I have DBISAM components on it and few others that are  not UniGUI related.

 

So, reviewing what I said, I am trying to convert the current project, based on UniGUI to a package based, on a way that I can intall and load dynamically the packages. 

 

Seems that TFrame is not a problem, created the Form Free Way. Not Sure if I can use datamodules with no need of the code above. (RegisterModuleClass is defined on UniGuiVars)

 

I can load dynamicall the BPL and then using my functions register each class imported from the package. Because in this moment I will be in a context that UniGuiVars are allowed.

 

What you can tell me of all that?

 

Thank you

[eelias]

Farshad,

 

I have found one obscure and almost forgotten unit that was including the MainForm, where uniGuiVars is declared.

 

I have corrected that, removing the reference to the Main Form and I could generate a package with the Frame, DataModule, etc incluiding the inheritance.

 

I will be moving now to dynamically open it and load the frames.

 

However I have removed the TDMMainG(UniMainModule.GetModuleInstance(TDMMainG))

 

To create the datamodule I am going to test creating it directly. However I believe that the above code is related to get an instance. But is it getting always the same instance of the object? or is it created a new one? What is the problem of calling TDMMainG.Create directly?

 

Eduardo