switch( ControlId ) {
	case IDM_IMAGE:
		{
			LboxString LString;
			LboxCommdlg Commdlg( this->hWnd );

			Commdlg.lpstrTitle = "ファイルを開く";
			Commdlg.lpstrFilter = "画像ファイル,*.jpg;*.jpeg;*.png;*.gif;*.bmp";

			if ( Commdlg.OpenFileName( &LString ) ) {
				LView->Hide();
				this->hDib = ToDIB( LString.szLboxString );
				::RedrawWindow(
					this->hWnd,
					NULL,
					NULL,
					RDW_INVALIDATE | RDW_ERASE
				);
			}
			break;
		}