December 01, 2003
Handling Multiple Win32 Operating Environments
Handling Multiple Win32 Operating Environments
Listing 6 WinSTL-s listbox_front_inserter function object
namespace winstl
{
struct listbox_front_inserter
{
public:
explicit listbox_front_inserter(HWND hwndListbox)
: m_hwndListbox(hwndListbox)
, m_bUnicode(::IsWindowUnicode(hwndListbox))
{}
void operator ()(char const *s)
{
insert(s);
}
void operator ()(wchar_t const *s)
{
insert(s);
}
// Implementation
private:
void insert(char const *s)
{
if(m_bUnicode)
{
listbox_insertstring_w(m_hwndListbox, a2w(s), 0);
}
else
{
listbox_insertstring_a(m_hwndListbox, s, 0);
}
}
void insert(wchar_t const *s)
{
if(m_bUnicode)
{
listbox_insertstring_w(m_hwndListbox, s, 0);
}
else
{
listbox_insertstring_a(m_hwndListbox, w2a(s), 0);
}
}
private:
HWND m_hwndListbox;
bool m_bUnicode;
};
} // namespace winstl
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