Question

谁能帮我注释下这段代码。初学者谢谢大家帮忙啦

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("HelloWin") ;
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 = szAppName ;

if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}

hwnd = CreateWindow (szAppName, // window class name
TEXT ("The Hello Program"), // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters

ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
.......
......

Answer 1

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("HelloWin") ; 显示在窗口标题栏的文字
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ; 窗口风格，关于重绘的，新手照抄就行，不用理解。
wndclass.lpfnWndProc = WndProc ; 窗口回调函数，当有消息来的时候就发给这个函数。
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ; 程序运行时的句柄
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ; 程序的图标，
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; 鼠标的形状，当鼠标在窗口范围内时。
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ; 窗口的背景色
wndclass.lpszMenuName = NULL ; 窗口的菜单，无
wndclass.lpszClassName = szAppName ; 向系统注册一个应用程序的名字

if (!RegisterClass (&wndclass)) 注册窗口类
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"), 如果注册失败，弹出提示
szAppName, MB_ICONERROR) ;
return 0 ;
}

hwnd = CreateWindow (szAppName, // window class name 创建窗口
TEXT ("The Hello Program"), // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position 由系统决定窗口的位置和大小。
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle 程序的第一个窗口，所以没有父窗口，也可以理解为NULL就是桌面。
NULL, // window menu handle 没有菜单
hInstance, // program instance handle 程序进程句柄
NULL) ; // creation parameters

ShowWindow (hwnd, iCmdShow) ; 显示窗口
UpdateWindow (hwnd) ; 更新窗口内容