TUTORIAL API #1 (FAIRE UNE FENÊTRE AVEC DU TEXTE)

/*hello.cpp:
-------------------------------------------------------------------------------*/
#include "hello.h"

int WINAPI WinMain
   (HINSTANCE hInst, HINSTANCE hPrevInst, char * cmdParam, int cmdShow)
{
    char className [] = "Hello";

    WinClass winClass (WindowProcedure, className, hInst);
    winClass.Register ();

    WinMaker win ("Hello World!", className, hInst);
    win.Show (cmdShow);

    MSG  msg;
    int status;
    while ((status = ::GetMessage (&msg, 0, 0, 0)) != 0)
    {
        if (status == -1)
            return -1;
        ::DispatchMessage (&msg);
    }

    return msg.wParam;
}

WinClass::WinClass (WNDPROC wndProc, char const * className, HINSTANCE hInst)
{
    _class.style = 0;
    _class.lpfnWndProc = wndProc;  // window procedure: mandatory
    _class.cbClsExtra = 0;
    _class.cbWndExtra = 0;
    _class.hInstance = hInst;           // owner of the class: mandatory
    _class.hIcon = 0;
    _class.hCursor = ::LoadCursor (0, IDC_ARROW); // optional
    _class.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1); // optional
    _class.lpszMenuName = 0;
    _class.lpszClassName = className;   // mandatory
}

WinMaker::WinMaker
    (char const * caption, char const * className, HINSTANCE hInstance)
{
    _hwnd = ::CreateWindow (
        className,              // name of a registered window class
        caption,                // window caption
        WS_OVERLAPPEDWINDOW,    // window style
        CW_USEDEFAULT,          // x position
        CW_USEDEFAULT,          // y position
        CW_USEDEFAULT,          // witdh
        CW_USEDEFAULT,          // height
        0,                      // handle to parent window
        0,                      // handle to menu
        hInstance,              // application instance
        0 );                    // window creation data
}

// Window Proc called by Windows

LRESULT CALLBACK WindowProcedure 
    (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_DESTROY:
            ::PostQuitMessage (0);
            return 0;

    }
    return ::DefWindowProc (hwnd, message, wParam, lParam );
}

/*hello.h:
-------------------------------------------------------------------------------*/
#if !defined HELLO_H
#define HELLO_H

#include <windows.h>

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

class WinClass
{
public:
    WinClass (WNDPROC wndProc, char const * className, HINSTANCE hInst);
    void Register ()
    {
        ::RegisterClass (&_class);
    }
private:
    WNDCLASS _class;
};

class WinMaker
{
public:
    WinMaker (): _hwnd (0) {}
    WinMaker (char const * caption, char const * className, HINSTANCE hInstance);
    void Show (int cmdShow)
    {
        ::ShowWindow (_hwnd, cmdShow);
        ::UpdateWindow (_hwnd);
    }
protected:
    HWND _hwnd;
};

#endif