src/common/dbgrid.cpp

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