src/common/dbgrid.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dbgrid.cpp
   3 // Purpose:     Displays a wxDbTable in a wxGrid.
   4 // Author:      Roger Gammans, Paul Gammans
   5 // Modified by:
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 The Computer Surgery (roger@computer-surgery.co.uk)
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11 // Branched From : dbgrid.cpp,v 1.18 2000/12/19 13:00:58
  12 ///////////////////////////////////////////////////////////////////////////////
  13
  14 #include "wx/wxprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20
  21 #if wxUSE_ODBC
  22 #if wxUSE_GRID
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/textctrl.h"
  26     #include "wx/dc.h"
  27 #endif // WX_PRECOMP
  28
  29 #include "wx/generic/gridctrl.h"
  30 #include "wx/dbgrid.h"
  31
  32 // DLL options compatibility check:
  33 #include "wx/app.h"
  34 WX_CHECK_BUILD_OPTIONS("wxDbGrid")
  35
  36
  37 wxDbGridCellAttrProvider::wxDbGridCellAttrProvider()
  38 {
  39     m_data=NULL;
  40     m_ColInfo=NULL;
  41 }
  42
  43 wxDbGridCellAttrProvider::wxDbGridCellAttrProvider(wxDbTable *tab, wxDbGridColInfoBase* ColInfo)
  44 {
  45     m_data=tab;
  46     m_ColInfo=ColInfo;
  47 }
  48
  49 wxDbGridCellAttrProvider::~wxDbGridCellAttrProvider()
  50 {
  51 }
  52
  53 wxGridCellAttr *wxDbGridCellAttrProvider::GetAttr(int row, int col,
  54                                       wxGridCellAttr::wxAttrKind  kind) const
  55 {
  56     wxGridCellAttr *attr = wxGridCellAttrProvider::GetAttr(row,col,kind);
  57
  58     if (m_data && m_ColInfo && (m_data->GetNumberOfColumns() > m_ColInfo[col].DbCol))
  59     {
  60         //FIXME: this test could.
  61         //  ??::InsertPending == m_data->get_ModifiedStatus()
  62         //  and if InsertPending use colDef[].InsertAllowed
  63         if (!(m_data->GetColDefs()[(m_ColInfo[col].DbCol)].Updateable))
  64         {
  65             switch(kind)
  66             {
  67                 case (wxGridCellAttr::Any):
  68                     if (!attr)
  69                     {
  70                         attr = new wxGridCellAttr;
  71                         // Store so we don't keep creating / deleting this...
  72                         wxDbGridCellAttrProvider * self = wxConstCast(this, wxDbGridCellAttrProvider) ;
  73                         attr->IncRef();
  74                         self->SetColAttr(attr, col);
  75                         attr->SetReadOnly();
  76                     }
  77                     else
  78                     {
  79                         //We now must check what we were returned. and do the right thing (tm)
  80                         wxGridCellAttr::wxAttrKind attrkind = attr->GetKind();
  81                         if ((attrkind == (wxGridCellAttr::Default)) || (attrkind == (wxGridCellAttr::Cell)) ||
  82                             (attrkind == (wxGridCellAttr::Col)))
  83                         {
  84                                 wxGridCellAttr *attrtomerge = attr;
  85                                 attr = new wxGridCellAttr;
  86                                 attr->SetKind(wxGridCellAttr::Merged);
  87                                 attr->MergeWith(attrtomerge);
  88                                 attr->SetReadOnly();
  89                                 attrtomerge->DecRef();
  90                         }
  91                         attr->SetReadOnly();
  92                     }
  93                 break;
  94                 case (wxGridCellAttr::Col):
  95                     //As we must have a Coll, and were setting Coll attributes
  96                     // we can based on wxdbTable's so just set RO if attr valid
  97                     if (!attr)
  98                     {
  99                         attr = new wxGridCellAttr;
 100                         wxDbGridCellAttrProvider * self = wxConstCast(this, wxDbGridCellAttrProvider) ;
 101                         attr->IncRef();
 102                         self->SetColAttr(attr, col);
 103                     }
 104                     attr->SetReadOnly();
 105                 break;
 106                 default:
 107                     //Dont add RO for...
 108                     //  wxGridCellAttr::Cell - Not required, will inherit on merge from row.
 109                     //  wxGridCellAttr::Row - If wxDbtable ever supports row locking could add
 110                     //                        support to make RO on a row basis also.
 111                     //  wxGridCellAttr::Default - Don't edit this ! or all cell with a attr will become readonly
 112                     //  wxGridCellAttr::Merged - This should never be asked for.
 113                 break;
 114             }
 115         }
 116
 117     }
 118     return attr;
 119 }
 120
 121 void wxDbGridCellAttrProvider::AssignDbTable(wxDbTable *tab)
 122 {
 123     m_data = tab;
 124 }
 125
 126 wxDbGridTableBase::wxDbGridTableBase(wxDbTable *tab, wxDbGridColInfo*  ColInfo,
 127                      int count, bool takeOwnership)  :
 128     m_keys(),
 129     m_data(tab),
 130     m_dbowner(takeOwnership),
 131     m_rowmodified(false)
 132 {
 133
 134     if (count == wxUSE_QUERY)
 135     {
 136         m_rowtotal = m_data ? m_data->Count() : 0;
 137     }
 138     else
 139     {
 140         m_rowtotal = count;
 141     }
 142 //    m_keys.Size(m_rowtotal);
 143     m_row = -1;
 144     if (ColInfo)
 145     {
 146         m_nocols = ColInfo->Length();
 147         m_ColInfo = new wxDbGridColInfoBase[m_nocols];
 148         //Do Copy.
 149         wxDbGridColInfo *ptr = ColInfo;
 150         int i =0;
 151         while (ptr && i < m_nocols)
 152         {
 153             m_ColInfo[i] = ptr->m_data;
 154             ptr = ptr->m_next;
 155             i++;
 156         }
 157 #ifdef __WXDEBUG__
 158         if (ptr)
 159         {
 160             wxLogDebug(wxT("NoCols over length after traversing %i items"),i);
 161         }
 162         if (i < m_nocols)
 163         {
 164             wxLogDebug(wxT("NoCols under length after traversing %i items"),i);
 165         }
 166 #endif
 167     }
 168 }
 169
 170 wxDbGridTableBase::~wxDbGridTableBase()
 171 {
 172     wxDbGridCellAttrProvider *provider;
 173
 174     //Can't check for update here as
 175
 176     //FIXME: should i remove m_ColInfo and m_data from m_attrProvider if a wxDbGridAttrProvider
 177 //    if ((provider = dynamic_cast<wxDbGridCellAttrProvider *>(GetAttrProvider())))
 178      // Using C casting for now until we can support dynamic_cast with wxWidgets
 179     provider = (wxDbGridCellAttrProvider *)(GetAttrProvider());
 180     if (provider)
 181     {
 182         provider->AssignDbTable(NULL);
 183     }
 184     delete [] m_ColInfo;
 185
 186     Writeback();
 187     if (m_dbowner)
 188     {
 189         delete m_data;
 190     }
 191 }
 192
 193 bool wxDbGridTableBase::CanHaveAttributes()
 194 {
 195     if (!GetAttrProvider())
 196     {
 197         // use the default attr provider by default
 198         SetAttrProvider(new wxDbGridCellAttrProvider(m_data, m_ColInfo));
 199     }
 200     return true;
 201 }
 202
 203
 204 bool wxDbGridTableBase::AssignDbTable(wxDbTable *tab, int count, bool takeOwnership)
 205 {
 206     wxDbGridCellAttrProvider *provider;
 207
 208     //Remove Information from grid about old data
 209     if (GetView())
 210     {
 211         wxGrid *grid = GetView();
 212         grid->BeginBatch();
 213         grid->ClearSelection();
 214         if (grid->IsCellEditControlEnabled())
 215         {
 216             grid->DisableCellEditControl();
 217         }
 218         wxGridTableMessage msg(this, wxGRIDTABLE_NOTIFY_ROWS_DELETED,0,m_rowtotal);
 219         grid->ProcessTableMessage(msg);
 220     }
 221
 222     //reset our internals...
 223     Writeback();
 224     if (m_dbowner)
 225     {
 226         delete m_data;
 227     }
 228     m_keys.Empty();
 229     m_data = tab;
 230     //FIXME: Remove dynamic_cast before sumision to wxwin
 231 //    if ((provider = dynamic_cast<wxDbGridCellAttrProvider *> (GetAttrProvider())))
 232      // Using C casting for now until we can support dynamic_cast with wxWidgets
 233     provider = (wxDbGridCellAttrProvider *)(GetAttrProvider());
 234     if (provider)
 235     {
 236         provider->AssignDbTable(m_data);
 237     }
 238
 239     if (count == wxUSE_QUERY)
 240     {
 241         m_rowtotal = m_data ? m_data->Count() : 0;
 242     }
 243     else
 244     {
 245          m_rowtotal = count;
 246     }
 247     m_row = -1;
 248
 249     //Add Information to grid about new data
 250     if (GetView())
 251     {
 252         wxGrid * grid = GetView();
 253         wxGridTableMessage msg(this, wxGRIDTABLE_NOTIFY_ROWS_APPENDED, m_rowtotal);
 254         grid->ProcessTableMessage(msg);
 255         grid->EndBatch();
 256     }
 257     m_dbowner = takeOwnership;
 258     m_rowmodified = false;
 259     return true;
 260 }
 261
 262 wxString wxDbGridTableBase::GetTypeName(int WXUNUSED(row), int col)
 263 {
 264     if (GetNumberCols() > col)
 265     {
 266         if (m_ColInfo[col].wxtypename == wxGRID_VALUE_DBAUTO)
 267         {
 268             if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 269             {
 270                 wxFAIL_MSG (_T("You can not use wxGRID_VALUE_DBAUTO for virtual columns"));
 271             }
 272             switch(m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype)
 273             {
 274                 case SQL_C_CHAR:
 275 #ifdef SQL_C_WCHAR
 276                 case SQL_C_WCHAR:
 277 #endif
 278                     return wxGRID_VALUE_STRING;
 279                 case SQL_C_SHORT:
 280                 case SQL_C_SSHORT:
 281                     return wxGRID_VALUE_NUMBER;
 282                 case SQL_C_USHORT:
 283                     return wxGRID_VALUE_NUMBER;
 284                 case SQL_C_LONG:
 285                 case SQL_C_SLONG:
 286                     return wxGRID_VALUE_NUMBER;
 287                 case SQL_C_ULONG:
 288                     return wxGRID_VALUE_NUMBER;
 289                 case SQL_C_FLOAT:
 290                     return wxGRID_VALUE_FLOAT;
 291                 case SQL_C_DOUBLE:
 292                     return wxGRID_VALUE_FLOAT;
 293                 case SQL_C_DATE:
 294                     return wxGRID_VALUE_DATETIME;
 295                 case SQL_C_TIME:
 296                     return wxGRID_VALUE_DATETIME;
 297                 case SQL_C_TIMESTAMP:
 298                     return wxGRID_VALUE_DATETIME;
 299                 default:
 300                     return wxGRID_VALUE_STRING;
 301             }
 302         }
 303         else
 304         {
 305             return m_ColInfo[col].wxtypename;
 306         }
 307     }
 308     wxFAIL_MSG (_T("unknown column"));
 309     return wxString();
 310 }
 311
 312 bool wxDbGridTableBase::CanGetValueAs(int row, int col, const wxString& typeName)
 313 {
 314     wxLogDebug(wxT("CanGetValueAs() on %i,%i"),row,col);
 315     //Is this needed? As it will be validated on GetValueAsXXXX
 316     ValidateRow(row);
 317
 318     if (typeName == wxGRID_VALUE_STRING)
 319     {
 320         //FIXME ummm What about blob field etc.
 321         return true;
 322     }
 323
 324     if (m_data->IsColNull((UWORD)m_ColInfo[col].DbCol))
 325     {
 326         return false;
 327     }
 328
 329     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 330     {
 331         //If a virtual column then we can't find it's type. we have to
 332         // return false to get using wxVariant.
 333         return false;
 334     }
 335     int sqltype = m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype;
 336
 337     if (typeName == wxGRID_VALUE_DATETIME)
 338     {
 339         if ((sqltype == SQL_C_DATE) ||
 340             (sqltype == SQL_C_TIME) ||
 341             (sqltype == SQL_C_TIMESTAMP))
 342         {
 343             return true;
 344         }
 345         return false;
 346     }
 347     if (typeName == wxGRID_VALUE_NUMBER)
 348     {
 349         if ((sqltype == SQL_C_SSHORT) ||
 350             (sqltype == SQL_C_USHORT) ||
 351             (sqltype == SQL_C_SLONG)  ||
 352             (sqltype == SQL_C_ULONG))
 353         {
 354             return true;
 355         }
 356         return false;
 357     }
 358     if (typeName == wxGRID_VALUE_FLOAT)
 359     {
 360         if ((sqltype == SQL_C_SSHORT) ||
 361             (sqltype == SQL_C_USHORT) ||
 362             (sqltype == SQL_C_SLONG)  ||
 363             (sqltype == SQL_C_ULONG)  ||
 364             (sqltype == SQL_C_FLOAT)  ||
 365             (sqltype == SQL_C_DOUBLE))
 366         {
 367             return true;
 368         }
 369         return false;
 370     }
 371     return false;
 372 }
 373
 374 bool wxDbGridTableBase::CanSetValueAs(int WXUNUSED(row), int col, const wxString& typeName)
 375 {
 376     if (typeName == wxGRID_VALUE_STRING)
 377     {
 378         //FIXME ummm What about blob field etc.
 379         return true;
 380     }
 381
 382     if (!(m_data->GetColDefs()[(m_ColInfo[col].DbCol)].Updateable))
 383     {
 384         return false;
 385     }
 386
 387     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 388     {
 389         //If a virtual column then we can't find it's type. we have to faulse to
 390         //get using wxVairent.
 391         return false;
 392     }
 393
 394     int sqltype = m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype;
 395     if (typeName == wxGRID_VALUE_DATETIME)
 396     {
 397         if ((sqltype == SQL_C_DATE) ||
 398             (sqltype == SQL_C_TIME) ||
 399             (sqltype == SQL_C_TIMESTAMP))
 400         {
 401             return true;
 402         }
 403         return false;
 404     }
 405     if (typeName == wxGRID_VALUE_NUMBER)
 406     {
 407         if ((sqltype == SQL_C_SSHORT) ||
 408             (sqltype == SQL_C_USHORT) ||
 409             (sqltype == SQL_C_SLONG)  ||
 410             (sqltype == SQL_C_ULONG))
 411         {
 412             return true;
 413         }
 414         return false;
 415     }
 416     if (typeName == wxGRID_VALUE_FLOAT)
 417     {
 418         if ((sqltype == SQL_C_SSHORT) ||
 419             (sqltype == SQL_C_USHORT) ||
 420             (sqltype == SQL_C_SLONG)  ||
 421             (sqltype == SQL_C_ULONG)  ||
 422             (sqltype == SQL_C_FLOAT)  ||
 423             (sqltype == SQL_C_DOUBLE))
 424         {
 425             return true;
 426         }
 427         return false;
 428     }
 429     return false;
 430 }
 431
 432 long wxDbGridTableBase::GetValueAsLong(int row, int col)
 433 {
 434     ValidateRow(row);
 435
 436     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 437     {
 438         wxFAIL_MSG (_T("You can not use GetValueAsLong for virtual columns"));
 439         return 0;
 440     }
 441     int sqltype = m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype;
 442     if ((sqltype == SQL_C_SSHORT) ||
 443         (sqltype == SQL_C_USHORT) ||
 444         (sqltype == SQL_C_SLONG) ||
 445         (sqltype == SQL_C_ULONG))
 446     {
 447         wxVariant val = m_data->GetColumn(m_ColInfo[col].DbCol);
 448         return val.GetLong();
 449     }
 450     wxFAIL_MSG (_T("unknown column, "));
 451     return 0;
 452 }
 453
 454 double wxDbGridTableBase::GetValueAsDouble(int row, int col)
 455 {
 456     wxLogDebug(wxT("GetValueAsDouble() on %i,%i"),row,col);
 457     ValidateRow(row);
 458
 459     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 460     {
 461         wxFAIL_MSG (_T("You can not use GetValueAsDouble for virtual columns"));
 462         return 0.0;
 463     }
 464     int sqltype = m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype;
 465     if ((sqltype == SQL_C_SSHORT) ||
 466         (sqltype == SQL_C_USHORT) ||
 467         (sqltype == SQL_C_SLONG) ||
 468         (sqltype == SQL_C_ULONG) ||
 469         (sqltype == SQL_C_FLOAT) ||
 470         (sqltype == SQL_C_DOUBLE))
 471     {
 472         wxVariant val = m_data->GetColumn(m_ColInfo[col].DbCol);
 473         return val.GetDouble();
 474     }
 475     wxFAIL_MSG (_T("unknown column"));
 476     return 0.0;
 477 }
 478
 479 bool wxDbGridTableBase::GetValueAsBool(int row, int col)
 480 {
 481     wxLogDebug(wxT("GetValueAsBool() on %i,%i"),row,col);
 482     ValidateRow(row);
 483
 484     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 485     {
 486         wxFAIL_MSG (_T("You can not use GetValueAsBool for virtual columns"));
 487         return 0;
 488     }
 489     int sqltype = m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype;
 490     if ((sqltype == SQL_C_SSHORT) ||
 491         (sqltype == SQL_C_USHORT) ||
 492         (sqltype == SQL_C_SLONG) ||
 493         (sqltype == SQL_C_ULONG))
 494     {
 495         wxVariant val = m_data->GetColumn(m_ColInfo[col].DbCol);
 496         return val.GetBool();
 497     }
 498     wxFAIL_MSG (_T("unknown column, "));
 499     return 0;
 500 }
 501
 502 void* wxDbGridTableBase::GetValueAsCustom(int row, int col, const wxString& typeName)
 503 {
 504     wxLogDebug(wxT("GetValueAsCustom() on %i,%i"),row,col);
 505     ValidateRow(row);
 506
 507     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 508     {
 509         wxFAIL_MSG (_T("You can not use GetValueAsCustom for virtual columns"));
 510         return NULL;
 511     }
 512     if (m_data->IsColNull((UWORD)m_ColInfo[col].DbCol))
 513         return NULL;
 514
 515     if (typeName == wxGRID_VALUE_DATETIME)
 516     {
 517         wxDbColDef *pColDefs = m_data->GetColDefs();
 518         int sqltype = pColDefs[(m_ColInfo[col].DbCol)].SqlCtype;
 519
 520         if ((sqltype == SQL_C_DATE) ||
 521             (sqltype == SQL_C_TIME) ||
 522             (sqltype == SQL_C_TIMESTAMP))
 523         {
 524             wxVariant val = m_data->GetColumn(m_ColInfo[col].DbCol);
 525             return new wxDateTime(val.GetDateTime());
 526         }
 527     }
 528     wxFAIL_MSG (_T("unknown column data type "));
 529     return NULL;
 530 }
 531
 532
 533 void wxDbGridTableBase::SetValueAsCustom(int row, int col, const wxString& typeName, void* value)
 534 {
 535     wxLogDebug(wxT("SetValueAsCustom() on %i,%i"),row,col);
 536     ValidateRow(row);
 537
 538     if (m_data->GetNumberOfColumns() <= m_ColInfo[col].DbCol)
 539     {
 540         wxFAIL_MSG (_T("You can not use SetValueAsCustom for virtual columns"));
 541         return;
 542     }
 543
 544     if (typeName == wxGRID_VALUE_DATETIME)
 545     {
 546         int sqltype = m_data->GetColDefs()[(m_ColInfo[col].DbCol)].SqlCtype;
 547         if ((sqltype == SQL_C_DATE) ||
 548             (sqltype == SQL_C_TIME) ||
 549             (sqltype == SQL_C_TIMESTAMP))
 550         {
 551             //FIXME: you can't dynamic_cast from (void *)
 552             //wxDateTime *date = wxDynamicCast(value, wxDateTime);
 553             wxDateTime *date = (wxDateTime *)value;
 554             if (!date)
 555             {
 556                 wxFAIL_MSG (_T("Failed to convert data"));
 557                 return;
 558             }
 559             wxVariant val(date);
 560             m_rowmodified = true;
 561             m_data->SetColumn(m_ColInfo[col].DbCol,val);
 562         }
 563     }
 564     wxFAIL_MSG (_T("unknown column data type"));
 565     return ;
 566 }
 567
 568
 569 wxString wxDbGridTableBase::GetColLabelValue(int col)
 570 {
 571     if (GetNumberCols() > col)
 572     {
 573         return m_ColInfo[col].Title;
 574     }
 575     wxFAIL_MSG (_T("unknown column"));
 576     return wxString();
 577 }
 578
 579 bool wxDbGridTableBase::IsEmptyCell(int row, int col)
 580 {
 581     wxLogDebug(wxT("IsEmtpyCell on %i,%i"),row,col);
 582
 583     ValidateRow(row);
 584     return m_data->IsColNull((UWORD)m_ColInfo[col].DbCol);
 585 }
 586
 587
 588 wxString wxDbGridTableBase::GetValue(int row, int col)
 589 {
 590     wxLogDebug(wxT("GetValue() on %i,%i"),row,col);
 591
 592     ValidateRow(row);
 593     wxVariant val = m_data->GetColumn(m_ColInfo[col].DbCol);
 594     wxLogDebug(wxT("\tReturning \"%s\"\n"),val.GetString().c_str());
 595
 596     return val.GetString();
 597 }
 598
 599
 600 void wxDbGridTableBase::SetValue(int row, int col,const wxString& value)
 601 {
 602     wxLogDebug(wxT("SetValue() on %i,%i"),row,col);
 603
 604     ValidateRow(row);
 605     wxVariant val(value);
 606
 607     m_rowmodified = true;
 608     m_data->SetColumn(m_ColInfo[col].DbCol,val);
 609 }
 610
 611
 612 void wxDbGridTableBase::SetValueAsLong(int row, int col, long value)
 613 {
 614     wxLogDebug(wxT("SetValueAsLong() on %i,%i"),row,col);
 615
 616     ValidateRow(row);
 617     wxVariant val(value);
 618
 619     m_rowmodified = true;
 620     m_data->SetColumn(m_ColInfo[col].DbCol,val);
 621 }
 622
 623
 624 void wxDbGridTableBase::SetValueAsDouble(int row, int col, double value)
 625 {
 626     wxLogDebug(wxT("SetValueAsDouble() on %i,%i"),row,col);
 627
 628     ValidateRow(row);
 629     wxVariant val(value);
 630
 631     m_rowmodified = true;
 632     m_data->SetColumn(m_ColInfo[col].DbCol,val);
 633
 634 }
 635
 636
 637 void wxDbGridTableBase::SetValueAsBool(int row, int col, bool value)
 638 {
 639     wxLogDebug(wxT("SetValueAsBool() on %i,%i"),row,col);
 640
 641     ValidateRow(row);
 642     wxVariant val(value);
 643
 644     m_rowmodified = true;
 645     m_data->SetColumn(m_ColInfo[col].DbCol,val);
 646 }
 647
 648
 649 void wxDbGridTableBase::ValidateRow(int row)
 650 {
 651     wxLogDebug(wxT("ValidateRow(%i) currently on row (%i). Array count = %i"),row,m_row,m_keys.GetCount());
 652
 653     if (row == m_row)
 654          return;
 655     Writeback();
 656
 657     //We add to row as Count is unsigned!
 658     if ((unsigned)(row+1) > m_keys.GetCount())
 659     {
 660         wxLogDebug(wxT("\trow key unknown"));
 661         // Extend Array, iterate through data filling with keys
 662         m_data->SetRowMode(wxDbTable::WX_ROW_MODE_QUERY);
 663         int trow;
 664         for (trow = m_keys.GetCount(); trow <= row; trow++)
 665         {
 666             wxLogDebug(wxT("Fetching row %i.."), trow);
 667             bool ret = m_data->GetNext();
 668
 669             wxLogDebug(wxT(" ...success=(%i)"),ret);
 670             GenericKey k = m_data->GetKey();
 671             m_keys.Add(k);
 672         }
 673         m_row = row;
 674     }
 675     else
 676     {
 677         wxLogDebug(wxT("\trow key known centering data"));
 678         GenericKey k = m_keys.Item(row);
 679         m_data->SetRowMode(wxDbTable::WX_ROW_MODE_INDIVIDUAL);
 680         m_data->ClearMemberVars();
 681         m_data->SetKey(k);
 682         if (!m_data->QueryOnKeyFields())
 683         {
 684             wxDbLogExtendedErrorMsg(_T("ODBC error during Query()\n\n"), m_data->GetDb(),__TFILE__,__LINE__);
 685         }
 686
 687         m_data->GetNext();
 688
 689         m_row = row;
 690     }
 691     m_rowmodified = false;
 692 }
 693
 694 bool wxDbGridTableBase::Writeback() const
 695 {
 696     if (!m_rowmodified)
 697     {
 698         return true;
 699     }
 700
 701     bool result=true;
 702     wxLogDebug(wxT("\trow key unknown"));
 703
 704 // FIXME: this code requires dbtable support for record status
 705 #if 0
 706     switch (m_data->get_ModifiedStatus())
 707     {
 708         case wxDbTable::UpdatePending:
 709             result = m_data->Update();
 710            break;
 711         case wxDbTable::InsertPending:
 712             result = (m_data->Insert() == SQL_SUCCESS);
 713         break;
 714         default:
 715             //Nothing
 716         break;
 717     }
 718 #else
 719     wxLogDebug(wxT("WARNING : Row writeback not implemented "));
 720 #endif
 721     return result;
 722 }
 723
 724 #include "wx/arrimpl.cpp"
 725
 726 WX_DEFINE_EXPORTED_OBJARRAY(keyarray)
 727
 728 #endif  // #if wxUSE_GRID
 729 #endif  // #if wxUSE_ODBC
 730