CComboBox::Clear
Deletes (clears) the current selection, if any, in the edit control of the combo box.
void Clear( );
Remarks
To delete the current selection and place the deleted contents onto the Clipboard, use the Cut member function.
Example
// Delete all of the text from the combo box's edit control.
m_MyComboBox.SetEditSel(0, -1);
m_MyComboBox.Clear();
Requirements
Header: afxwin.h