Calling DLLs from Delphi

[ManojKG]

I am having some Delphi compiled DLLs, and i am calling them in my application using Loadlibrary() function and the procedures using getproaddress().

Now the problem is while opening a form in the DLL through exe, a new instance are created and showing that in the tast bar.

I want the form to be displayed in the same handler of exe.

please give me a small example to call DLLs in delphi in proper way.


Manoj

 

[McMerfy]

Here's an example of a function exported from DLL that calls a form in this DLL. Note that DLL has it's own Application.Handle, so i substitute it with a handle of a calling application:

function MainForm(Params : Pointer):Boolean;stdcall;
var
  ADllForm     : TfrTest;
  OldHandle    : THandle;
begin
  OldHandle := Application.Handle;
  // TPlugInParams is my type. It's a record, one of it's 
  //fields contains the handle of the main app.
  Application.Handle := TPlugInParams(Params^).AppHandle;
  ADllForm := TfrTest.Create(Application);
  try
    Result := (ADllForm.ShowModal = mrOk);
  finally
    // Restoring old handle;
    Application.Handle := OldHandle; 
    ADllForm.Release;
  end;
end;

Hope that helps.

--- markus