Help me DialogBox key trape like VK_HOME

[CyberFreak_f9]

i have a simple program with a dialog box and in a dialogbox a edit control
which require Customer Name and when customer name edit control has input focus and user press home key a list box open below edit control with full of customer name
but i dont know how to code VK_HOME in dialog box
i know problem is in my message
///////////////////////////////////////
while (GetMessage (&messages, NULL, 0, 0))
{

/* Translate virtual-key messages into character messages */
if( !IsDialogMessage(hwnd,&messages))
{
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}