DDX_LBString

Статья
10/16/2008

The DDX_LBString function manages the transfer of CString data between a list box control in a dialog box, form view, or control view object and a CString data member of the dialog box, form view, or control view object.

void AFXAPI DDX_LBString(
   CDataExchange* pDX,
   int nIDC,
   CString& value 
);

Параметры

pDX
A pointer to a CDataExchange object. The framework supplies this object to establish the context of the data exchange, including its direction.
nIDC
The resource ID of the list box control associated with the control property.
value
A reference to a member variable of the dialog box, form view, or control view object with which data is exchanged.

Заметки

When DDX_LBString is called to transfer data to a list box control, the first item in the control whose beginning matches value is selected. (To match the entire item rather than just a prefix, use DDX_LBStringExact.) If there are no matches, no items are selected. The matching is case-insensitive.

When DDX_LBString is called to transfer data from a list box control, value is set to the current list box selection. If no item is selected, value is set to a string of zero length.