[API] Drag&Drop

<그림 1 :: 다이얼 로그의 Accept file속성 true>

 <그림 4 :: 윈도우 헤더파일을 주석처리 한 모습.>

마지막으로 다이얼로그 함수를 다음과 같이 변경해 주면 일사천리다.

아이디는 그림 6을 참고하도록 !

INT_PTR CALLBACK Open(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)

{

        int wmId, wmEvent;

        UNREFERENCED_PARAMETER(lParam);

        LPTSTR pFileName;

        DWORD dwNumDrop;

        DWORD dwBufSize;

        CString strFileName;

        TCHAR tcFileName[128];

        switch (message)

        {

               case WM_INITDIALOG:

                       return (INT_PTR)TRUE;

               case WM_DROPFILES:

                       // dwNumDrop에File의개수를입력받는다.

                       dwNumDrop = DragQueryFile((HDROP)wParam, 0xFFFFFFFF, NULL ,0);

                       // dwNumDrop만큼for문을돈다

                       for(DWORD i=0L; i<dwNumDrop; i++)

                       {

                              // i번째에해당하는파일의버퍼사이즈를불러온다.

                              dwBufSize = DragQueryFile((HDROP)wParam, i, NULL ,0L) + 1;

                              // 버퍼사이즈만큼TCHAR를LPTSTR 형식으로동적할당취한다.

                              pFileName=(LPTSTR)new TCHAR [dwBufSize];

                              // 난 DragQueryFile 함수가뭐하는녀석인지잘모른다.

                              // 하지만 주석 처리 하면 프로그램 에러가 난다는 것은 잘 알고있다.

                              DragQueryFile((HDROP)wParam, i, pFileName, dwBufSize);

                              // 클래스변수(strFileName)에포인터변수의내용(pFileName)을초기화시킨다.

                              strFileName=pFileName;

                              // 포인터변수를동적해제시킨다.

                              delete []pFileName;

                              // 클래스변수를ID_DLG_FILE_PATH 에출력시킨다.

                              SetDlgItemText(hDlg, ID_DLG_FILE_PATH, strFileName);

                              // 클래스변수를TCHAR 변수에초기화시킨다.

                              wsprintf(tcFileName, strFileName);

                              // TCHAR 변수에있는File의경로(Path)를지워준다.

                              PathStripPath(tcFileName);

                              // file명과확장자만존재하는TCHAR 변수를ID_DLG_FILE_NAME에출력한다.

                              SetDlgItemText(hDlg, ID_DLG_FILE_NAME, tcFileName);

                       }

                       break;

               case WM_COMMAND:

                       wmId    = LOWORD(wParam);

                       wmEvent = HIWORD(wParam);

                       if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)

                       {

                              EndDialog(hDlg, LOWORD(wParam));

                              return (INT_PTR)TRUE;

                       }

                       switch (wmId)

                       {

                              case ID_DLG_FILE_PATH:

                                      break;

                              case ID_DLG_FILE_NAME:

                                      break;

                              case ID_DLG_FILE_DRAG:

                                      break;

                              case ID_DLG_FILE_OK:

                                      SendMessage(hDlg, WM_COMMAND, IDOK, IDCANCEL);

                                      break;

                       }

                       break;

        }

        return (INT_PTR)FALSE;

}