DLL and non modal form

[dufduf]

I add Form1 to dll project using File->New->Form in dll project.

DLL project

#include "Unit1.h"
extern "C" __declspec (dllexport) void Funkcja()
{
  TForm1* newform = new TForm1(Form1);
  newform->Show();
}

Main cpp

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  HINSTANCE DLLHandle = LoadLibrary(L"Projectmydll.dll");
 
   if(DLLHandle != NULL)
   {
      typedef (*aFunkcja)();
 
      aFunkcja Funkcja = (aFunkcja)GetProcAddress(DLLHandle, "_Funkcja");
 
      if( Funkcja != NULL) Funkcja();
      else ShowMessage( ""Lack of Funkcja" );
   }
   else ShowMessage( "Lack of dll." );
 
   FreeLibrary(DLLHandle);
}

But I still don`t know how to close the window without system error. While the window is creating modalessly main app free library and there is access violation. How to free library on onCloseQuery event or onClose event in Form1?

 

[2ffat]

Try (pun intended):

#include "Unit1.h"
extern "C" __declspec (dllexport) void Funkcja()
{
  TForm1* newform = new TForm1(Form1);
  try
  {
    newform->Show();
  }
  __finally
  {
    delete newform;
  }
}

James P. Cottingham
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