Most of the units I work on rely on a Data Module. One of the most annoying things I come accross is an error message telling me Module X references another module and cannot be saved until Mod...

I need to send a windows message to a TDataModule in my Delphi 2010 app. I would like to use PostMessage(???.Handle, UM_LOG_ON_OFF, 0,0); Question: The TDataModule does not have a Handle. How can ...

I suddenly noticed a TDataModuleTestExchange(nil) 'constructor call' in our codebase: procedure TDialoogConfigExchange.ButtonTestClick(Sender: TObject); var lDataModuleTestExchange: TDataModuleTe...

Some database application developers prefer to create a data module before main form by editing the project source file like this begin Application.Initialize; Application.MainFormOnTaskba...

In prior versions of Delphi, I have used the data module (TDataModule) as a place to keep non-visual components to avoid cluttering up the main form. In Delphi XE2, when I create a new data module,...

I tried to copy and paste a component from one data module into another in Delphi XE2. The component was a Fast Report data source link component. The data module was brand new, just created that s...

I am using Delphi6 and have a data module with an ADO DataSet which is used by two forms, formA and FormB. Each form has a Dataset.Open() in OnCreate and Dataset.Close() in OnClose. If both forms a...

I am looking for some advice about structuring Delphi programs for maintainability. I've come to Delphi programming after a couple of decades of mostly C/C++ though I first learned to program with ...

I am trying to define the best way to refactor the project I am working on. Due to lack of good design almost all project is made up of: 1) forms containing business logic 2) huge datamodules (1...

I wonder how difficult it would be to be able to have a custom background or be able to draw on the datamodule canvas somehow so that the relationships of all the datasets can be nicely represented...

In Delphi 2009 I have a Form with a procedure MyProcedure that writes to a label on the Form. The form uses a DataModule with a ClientDataSet. When the AfterScroll event of the ClientDataSet is fir...

I run into this regularly, and am just looking for best practice/approach. I have a database / datamodule-containing app, and want to fire up the database/datasets on startup w/o having "active at ...

If all the business logic is present in a datamodule (TSQLDataSets and TDataSetProviders) how would you refactor the code to make the application more appropiate for unit testing?