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Hi,

I have a property grid, and I need to display the indeterminate mode for a cell. The cell also contains a combo with the corresponding text (show for checked, hide for un-checked)
When in the indeterminate state, I would like no text to be displayed. I tried setting the text to "", but i found out that if the text is not one of the show/hide (the true/false) texts, the LabelTextSet is ignored.

Is there a way around this problem? is there a smarter way of having a 3 state check-box like the standard check-box

Regards,

Offer

Mistake in my problem description - the funcion TextSet is ignored, NOT LabelTextSet

You can use the CExtGridCellCheckBox cell and initialize it in the following way:

CExtGridCellBool::g_strTextTrue = _T("Show");
CExtGridCellBool::g_strTextFalse = _T("Hide");
pCellCheckBox->SetAutoTextMode( true );
pCellCheckBox->Set3StateMode( true );
pCellCheckBox->SetCheck( 2 ); // indeterminate state

Hi,

Thanks, the 3 state works, but now there is no label.
Even if I set the static variables, they do not appear.
Also, I need them to change from cell to cell, so global variables is not a good idea.

Thanks.

You can do this by overriding CExtGridCellCheckBox in the following way:

//Declaration:
 
class CYourGridCellCheckBox : public CExtGridCellCheckBox
{
public:
 DECLARE_SERIAL( CYourGridCellCheckBox );
 IMPLEMENT_ExtGridCell_Clone( CYourGridCellCheckBox, CExtGridCellCheckBox);
 CYourGridCellCheckBox(
  CExtGridDataProvider * pDataProvider = NULL
  );
 virtual void TextGet( CExtSafeString & strCopy ) const;
};


//Implementation:
 
IMPLEMENT_SERIAL( CYourGridCellCheckBox, CExtGridCellCheckBox, VERSIONABLE_SCHEMA|1 );
 
...
 
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
 
...
 
CYourGridCellCheckBox::CYourGridCellCheckBox(
 CExtGridDataProvider * pDataProvider // = NULL
 )
 : CExtGridCellCheckBox( pDataProvider )
{
}
 
void CYourGridCellCheckBox::TextGet( CExtSafeString & strCopy ) const
{
 ASSERT_VALID( this );
 if( (GetStyleEx()&__EGCS_EX_UNDEFINED_ROLE) != 0 )
 {
  strCopy = _T("");
  return;
 }
 strCopy.Empty();
 if( GetAutoTextMode() )
 {
  strCopy = _T("");
  INT nCheck = GetCheck();
  switch( nCheck )
  {
  case 0:
   strCopy = _T("Hide");
   break;
  case 1:
   strCopy = _T("Show");
   break;
  case 2:
   strCopy = _T("Indeterminate");
   break;
  } // switch( nCheck )
  return;
 } // if( GetAutoTextMode() )
 CExtGridCellCheckBox::TextGet( strCopy );
}

Here is how this class should be initialized:

CYourGridCellCheckBox * pCellCheckBox0 =
 STATIC_DOWNCAST(
  CYourGridCellCheckBox,
  m_wndGrid.GridCellGet( 
   nColNo, 
   0L,
   0,
   0,
   RUNTIME_CLASS(CYourGridCellCheckBox)
   )
  );
 
pCellCheckBox0->SetAutoTextMode( true );
pCellCheckBox0->Set3StateMode( true );
pCellCheckBox0->SetCheck( 2 ); // indeterminate state