点解编译不能通过？帮帮忙

[hangjier]

#include <windows.h>
#include <MMSYSTEM.H>
#pragma comment(lib,"winmm.lib")

char str[80] = "Sample Outpt";
LRESULT CALLBACK WndProc (HWND,UINT,WPARAM,LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int iCmdShow)
{
// TODO: Place code here.
static char szAppName[] = "HelloWin";
HWND hwnd;
MSG msg;
WNDCLASSEX wc;

wc.cbSize = sizeof (wc);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hwnd;
wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL,IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject (WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = szAppName;
wc.hIconSm = LoadIcon (NULL,IDI_APPLICATION);

RegisterClassEx (&wc);
hwnd = CreateWindow (szAppName,
"The Hello Program",
WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_HSCROLL,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
ShowWindow (hwnd,iCmdShow);
UpdateWindow (hwnd);
while (GetMessage (&msg,NULL,0,0))
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return msg.wParam ;
}


LRESULT CALLBACK WndProc (HWND hwnd,UINT iMsg,WPARAM wParam,LPARAM lParam)
{

switch (iMsg)
{
case WM_CREATE:
sndPlaySound("e:\\dev_text\\finish.wav",SND_ASYNC);
return 0;

case WM_PAINT:
return 0;
case WM_DESTROY:
PostQuitMessage (0);
return (0);
}
return DefWindowProc (hwnd,iMsg,wParam,lParam);
}