simple win32 window wont show [closed]

Question

The program compiles and runs successfully but does not show a window, it simply ends immediately.

#include <Windows.h>


LRESULT CALLBACK WndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);


int WINAPI wWinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPWSTR CmdLine, int CmdShow )
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(CmdLine);

    WNDCLASSEX wndClass = {0};

    wndClass.cbSize = sizeof(WNDCLASSEX);
    wndClass.style = CS_HREDRAW | CS_VREDRAW;
    wndClass.lpfnWndProc = WndProc;
    wndClass.hInstance = hInstance;
    wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wndClass.lpszMenuName= NULL;
    wndClass.lpszClassName= "DX11BookWindowClass";

    if(!RegisterClassEx(&wndClass));
        return -1;

        RECT rc = {0,0,640,480};
        AdjustWindowRect(&rc,WS_OVERLAPPED,FALSE);

        HWND hwnd = CreateWindowA( "DX11BookWindowClass", "FirstWinProgram", WS_OVERLAPPEDWINDOW,
                                CW_USEDEFAULT, CW_USEDEFAULT, rc.right - rc.left, rc.bottom - rc.top,
                                NULL, NULL, hInstance, NULL );

        if(!hwnd)
            return -1;

        ShowWindow(hwnd,CmdShow);

        MSG msg = {0};

        while( msg.message != WM_QUIT )
        {
            if( PeekMessage(&msg,0,0,0,PM_REMOVE) )
            {
                TranslateMessage( &msg );
                DispatchMessage( &msg );
            }
            else
            {
                //Update
                //Draw
            }

        }
        //Demo ShutDown

        return static_cast<int>(msg.wParam);
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT paintstruct;
    HDC hDC;

    switch(message)
    {
    case WM_PAINT:
        {
        hDC = BeginPaint( hwnd,&paintstruct);
        break;
        }
    case WM_DESTROY:
        {
        PostQuitMessage( 0 );
        break;
        }
    default:
        {
        return DefWindowProc( hwnd, message, wParam, lParam);
        }

    }
    return 0;
}

Answer 1

oh dear...classic typo

if(!RegisterClassEx(&wndClass)); <---- typo, remove the ; that it works
return -1;

this means that the program always returns there

work on your coding style (i recommend to use everytime braces)