#include <vector>

using namespace std;

class TForm1 : public TForm
{
__published:    // IDE-managed Components

    void __fastcall WMDropFiles(TWMDropFiles &Msg);
    void __fastcall FormCreate(TObject *Sender);


private:    // User declarations
public:        // User declarations
    __fastcall TForm1(TComponent* Owner);


BEGIN_MESSAGE_MAP
        VCL_MESSAGE_HANDLER(WM_DROPFILES, TWMDropFiles, WMDropFiles);
END_MESSAGE_MAP(TForm)
};


//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif


void __fastcall TForm1::FormCreate(TObject *Sender)
{
    DragAcceptFiles(Handle, true);
}

void __fastcall TForm1::WMDropFiles(TWMDropFiles &message)
{
    char fullPath[MAX_PATH];
    UINT fileCount = DragQueryFile((HDROP)message.Drop,0xffffffff,NULL,0);
    for(UINT i=0 ;i<fileCount ;i++)
    {
        DragQueryFile((HDROP)message.Drop,i,fullPath,MAX_PATH);
       //    Memo1->Lines->Add(fullPath);
    }
    DragFinish((HDROP)message.Drop);
}

//---------------------------------------------------------------------------

위 코드와 같이 BEGIN_MESSAGE_MAP 을 이용하면 탐색기에서 드래그 하고 놓는 순간 이벤트가 감지 되어야 하는데

WMDropFiles함수에 디버깅을 위하여 브레이크를 걸어도 함수 호출 자체가 되지 않습니다...