Error LNK2019, LNK1120 when I try to build via VS2013 - winapi

Question

Here is the original code.
#include <windows.h>
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam);
int WINAPI Winmain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpszCmdLine, int nCmdShow)
{
HWND hwnd;
MSG msg;
WNDCLASS WndClass;
WndClass.style = CS_HREDRAW | CS_VREDRAW;
WndClass.lpfnWndProc = WndProc;
WndClass.cbClsExtra = 0;
WndClass.cbWndExtra = 0;
WndClass.hInstance = hInstance;
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
WndClass.lpszMenuName = NULL;
WndClass.lpszClassName = "Window Class Name";
RegisterClass(&WndClass);
hwnd = CreateWindow("Window Class Name", "Window Title Name", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
ShowWindow(hwnd, nCmdShow);
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)
{
HDC hdc;
PAINTSTRUCT ps;
RECT rect;
switch (iMsg)
{
case WM_CREATE:
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
//TextOut(hdc, 0, 0, "HelloWorld", 10);
rect.left = 50;
rect.top = 40;
rect.right = 200;
rect.bottom = 120;
DrawText(hdc, "HelloWorld", 10, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
EndPaint(hwnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
}
return DefWindowProc(hwnd, iMsg, wParam, lParam);
}
I think there is no problem in this code, but there is still fatal error LNK2019 & LNK1120.
I already tried changing to console to windows. But still same.
Can anybody help me? I cannot check anything in API programming.