It is not completely clear what you mean by "double-s" and "int-s". If you need a CExtGridCellUpDown which uses double values instead of integers, it is easy to do.
Actually CExtGridCellUpDown extends CExtGridCellNumber. The latter is based on VARIANT and allows you to use the following VARIANT types to store a numeric value:
- VT_I1
- VT_I2
- VT_UI1
- VT_UI2
- VT_I4
- VT_UI4
- VT_I8
- VT_UI8
- VT_R4
- VT_R8
- VT_INT
- VT_UINT
- VT_BOOL
- VT_ERROR
- VT_DATE
- VT_CY
- VT_DECIMAL
As you can see, you can use any of these types including doubles (
VT_R8).
Here is a code snippet which assigns a double value to a cell:
CExtGridCellUpDown * pCellUpDown =
STATIC_DOWNCAST(
CExtGridCellUpDown,
m_wndGrid.GridCellGet(
0,
1L,
0,
0,
RUNTIME_CLASS(CExtGridCellUpDown)
)
);
pCellUpDown ->_VariantAssign( DOUBLE(0.000000123456789) );
Note that, by default, increasing/decreasing operations change the cell value by 1 (one) and, if you need to change this behavior, you should override the following virtual methods:
CExtGridCellVariant::OnValueDecrement(
LPVARIANT pvarValue
)
CExtGridCellVariant::OnValueIncrement(
LPVARIANT pvarValue
)