Thread: figuring out what the code means

Hello all,

I have typed this code from a YouTube video, which opens up a blank window, but I have no I idea what it means,

Can anyone let me know what these codes mean

Code:

#include <windows.h>






LRESULT CALLBACK WindowProcedure(HWND,UINT,WPARAM,LPARAM);
//hwnd is a handle to the window.


int WINAPI WinMain(HINSTANCE hInst , HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{


    //MessageBox(NULL, "HELLO","My first GUI",MB_OK);




    WNDCLASSEXW wc = {0};


    wc.hbrBackground = (HBRUSH) COLOR_WINDOW ;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hInstance = hInst;
    wc.lpszClassName = L"myWindowClass";
    wc.lpfnWndProc = WindowProcedure;






    if(!RegisterClassW(&wc))
        return -1;


        CreateWindowW(L"myWindowClass",L"My Window =]",WS_EX_OVERLAPPEDWINDOW | WS_VISIBLE,100,100,500,500,
                      NULL,NULL,NULL,NULL);




    MSG msg = {0};


    while( GetMessage(&msg,NULL,NULL,NULL) )
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }


    return 0;


}


LRESULT CALLBACK WindowProcedure(HWND HWND,UINT msg,WPARAM wp,LPARAM lp)
{
    switch ( msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProcW(HWND,msg,wp,lp);


    }


}