LNK 1120 & LNK2019 (WinAPI)

#include <windows.h>
 
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
TCHAR TEXT1[] = L"Julia v0.3.0A Close Test1";
COLORREF ColorWindows = RGB(120, 120, 120);
 
int WINAPI WinMain(HINSTANCE his, HINSTANCE hpi, LPSTR lcl, int cout)
{
    TCHAR Class[] = L"Julia";
    HWND Julia;
    MSG  Text;
    WNDCLASSEX A;
    A.cbSize = sizeof(A);
    A.style = CS_VREDRAW | CS_HREDRAW;
    A.lpfnWndProc = WndProc;
    A.lpszMenuName = NULL;
    A.lpszClassName = Class;
    A.cbWndExtra = NULL;
    A.cbClsExtra = NULL;
    A.hIcon = LoadIcon(NULL, IDI_WINLOGO);
    A.hIconSm = LoadIcon(NULL, IDI_WINLOGO);
    A.hCursor = LoadCursor(NULL, IDC_ARROW);
    A.hbrBackground = (HBRUSH)GetStockObject(ColorWindows);
    A.hInstance = his;
    Julia = CreateWindow(Class, L"Julia (Cose Test 1)", WS_SIZEBOX | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_CAPTION, CW_USEDEFAULT, NULL, CW_USEDEFAULT, NULL, (HWND)NULL, NULL, HINSTANCE(his), NULL);
    ShowWindow(Julia, cout);
    UpdateWindow(Julia);
    while (GetMessage(&Text, NULL, 0, 0))
    {
        TranslateMessage(&Text);
        DispatchMessage(&Text);
    }
    return Text.wParam;
}