Microsoft Foundation Class (MFC) Interview Question:

What is a message map?

Submitted by: Administrator

Message map is dynamic function locater
It can look each function if it defined

e.g

void OnWndMessage(UINT message, WPARAM wParam, LPARAM
lParam, LRESULT *pResult)

{
// function looking MESSAGE_MAPS ((DECLARED))
// if found, CWnd::OnSize(UINT nStyle, int cx, int cy);
__thisclass.OnSize(wParam, HIWORD(lParam), LOWORD(lParam);
}
//M
Submitted by: Administrator