Question
“How can I implement custom processing when reports are loaded/saved?”
Solution
The following example shows how to implement the Designer OnOpenDoc and OnSaveDoc events to either override or augment the built-in save/load logic. When the OnCustomOpenDoc, OnCustomSaveDoc events are assigned, the report designer will not save or load any reports – it will instead fire the events and your event-handler code will be responsible for taking appropriate action.
Download: DesignerCustomOpenSaveDoc.zip
Sample Delphi code:
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procedure TForm1.ppDesigner1CustomOpenDoc(Sender: TObject); begin // This example displays a message and then loads the template // Template.Decription is a convenience property that return either // - Template.FileName for a file based template // - Template.DatabaseSettings.Name for a database template ShowMessage('CustomOpenDoc: ' + ppReport1.Template.Description); // Template.Load is a convenience method that calls either // - Template.LoadFromFile for a file based template // - Template.LoadFromDatabase for a database template ppReport1.Template.Load; // could do something different here end; procedure TForm1.ppDesigner1CustomSaveDoc(Sender: TObject); begin // This example displays a message and then saves the template // Template.Decription is a property that return either // - Template.FileName for a file based template // - Template.DatabaseSettings.Name for a database template ShowMessage('CustomSaveDoc: ' + ppReport1.Template.Description); // Template.Save is a convenience method that calls either // - Template.SaveFromFile for a file based template // - Template.SaveFromDatabase for a database template ppReport1.Template.Save; // could do something different here end; |