先給出一個純凈的Windows程序：
?1
#include?
<
windows.h
>
?2
?3
LRESULT?CALLBACK?MyWndProc(HWND?hWnd,?UINT?message,?WPARAM?wParam,?LPARAM?lParam);
?4
?5
int
?WINAPI?WinMain(HINSTANCE?hInstance,?HINSTANCE?hPrevInstance,?LPSTR?lpCmdLine,?
int
?nShowCmd)
?6
{
?7
????WNDCLASS?MyWndClass;
?8
????HWND?hWnd;
?9
????MSG?msg;
10
????UINT?width;
11
????UINT?height;
12
13
????
//
CS:Class?styles
14
????MyWndClass.style?
=
?CS_HREDRAW?
|
?CS_VREDRAW;
15
????MyWndClass.lpfnWndProc?
=
?MyWndProc;
//
Pointer?to?the?window?procedure
16
????MyWndClass.cbClsExtra?
=
?
0
;
17
????MyWndClass.cbWndExtra?
=
?
0
;
18
????MyWndClass.hInstance?
=
?hInstance;
19
????MyWndClass.hIcon?
=
?LoadIcon(NULL,?IDI_APPLICATION);
20
????MyWndClass.hCursor?
=
?LoadCursor(NULL,?IDC_ARROW);
21
????MyWndClass.hbrBackground?
=
?(HBRUSH)GetStockObject(WHITE_BRUSH);
22
????MyWndClass.lpszMenuName?
=
?NULL;
23
????MyWndClass.lpszClassName?
=
?
"
myWndClassName
"
;
24
????
25
????RegisterClass(
&
MyWndClass);
26
????
27
????width?
=
?::GetSystemMetrics(SM_CXSCREEN)
/
2
;
28
????height?
=
?::GetSystemMetrics(SM_CYSCREEN)
/
2
;
29
30
????hWnd?
=
?::CreateWindow(
"
myWndClassName
"
,
31
????????????????????????
"
window?title
"
,
32
????????????????????????WS_OVERLAPPEDWINDOW,
33
????????????????????????
10
,
34
????????????????????????
10
,
35
????????????????????????width,
36
????????????????????????height,
37
????????????????????????NULL,
38
????????????????????????NULL,
39
????????????????????????NULL,
//
also?be?hInstance,
40
????????????????????????
/**/
/*
[in]?Windows?95/98/Me:?Handle?to?the?instance?of?the?module?to?be?associated?with?the?window.?
41
????????????????????????????Windows?NT/2000/XP:?This?value?is?ignored.
42
????????????????????????
*/
43
????????????????????????NULL);
44
????::ShowWindow(hWnd,?nShowCmd);
45
????::UpdateWindow(hWnd);
46
????
47
????
while
(?(bRet?
=
?GetMessage(?
&
msg,?NULL,?
0
,?
0
?))?
!=
?
0
)?
//
The?thread?get?message?from?thread?message?queque?and?remove?it?from?queue
48
????????????????????????????????????????????????????????
//
when?encounters?the?WM_QUIT?message,?it?returns?FALSE?and?ends?the?loop.
49
????
{?
50
????????
if
?(bRet?
==
?
-
1
)
51
????????
{
52
????????????
//
?handle?the?error?and?possibly?exit
53
????????}
54
????????
else
55
????????
{
56
????????????TranslateMessage(
&
msg);?
57
????????????DispatchMessage(
&
msg);?
//
Direct?the?system?to?send?Mes?to?appropriate?window?procedure.and?it??
58
???????????????????????????????????
//
does?not?pass?the?time?the?message?was?posted?or?mouse?cursor?position.
59
????????}
60
????}
61
62
????
return
?msg.wParam;
63
64
LRESULT?CALLBACK?MyWndProc(HWND?hWnd,?UINT?message,?WPARAM?wParam,?LPARAM?lParam)
65
{
66
????HDC?hDC;
67
????PAINTSTRUCT?paintStruct;
68
????
switch
(message)
69
????????
{
70
????????
case
?WM_PAINT:
71
????????hDC?
=
?::BeginPaint(hWnd,
&
paintStruct);
72
????????????::TextOut(hDC,
10
,
10
,mesH
+
mesM
+
mesW
+
mesL,
100
);
73
????????::EndPaint(hWnd,
&
paintStruct);
74
????????
return
?
0
;
75
????
case
?WM_LBUTTONDOWN:
76
????????MessageBox(hWnd,
"
你按下了鼠標左鍵
"
,
"
左鍵按下提示
"
,MB_ICONEXCLAMATION?
|
?MB_OK);
77
????????
return
?
0
;
78
????
case
?WM_DESTROY:
79
????????????::PostQuitMessage(
0
);
80
????????????
return
?
0
;
81
????????}
82
????
return
?::DefWindowProc(hWnd,message,wParam,lParam);
83
}
好多啊，我都不想分析了，頭文件中都有的，我只講講我分析了哪些東西吧，然后把我修改后的代碼（比較亂，不過，如果你也和我作了一樣多的工作，你的代碼肯定也很亂）貼上來。
我分析的東西：LRESULT、CALLBACK、HWND、UINT、WPARAM、LPARAM……各種我不認識的玩意兒，還有就是如何發送、接收消息如SendMessage……
??1#include?<windows.h>
??2#include?"atlstr.h"
??3
??4//決定消息如何處理
??5/**//*?Types?use?for?passing?&?returning?polymorphic?values?*/
??6/**//*????typedef?UINT_PTR????????????WPARAM;
??7????typedef?_W64?unsigned?int?UINT_PTR,?*PUINT_PTR;
??8
??9????typedef?LONG_PTR????????????LPARAM;
?10
?11????typedef?LONG_PTR????????????LRESULT;
?12????typedef?_W64?long?LONG_PTR,?*PLONG_PTR;
?13????#define?_W64?__w64
?14
?15????#define?CALLBACK????__stdcall
?16
?17????Element????????????????????????????????Implementation??
?18????Argument-passing?order????????????????Pushes?parameters?on?the?stack,Right?to?left.
?19????Argument-passing?convention????????????By?value,?unless?a?pointer?or?reference?type?is?passed.
?20????Stack-maintenance?responsibility????Called?function?pops?its?own?arguments?from?the?stack.
?21????Name-decoration?convention????????????An?underscore?(_)?is?prefixed?to?the?name.?The?name?is?followed?
?22????????????????????????????????????????by?the?at?sign?(@)?followed?by?the?number?of?bytes?(in?decimal)?
?23????????????????????????????????????????in?the?argument?list.?Therefore,?the?function?declared?as?
?24????????????????????????????????????????int?func(?int?a,?double?b?)?is?decorated?as?follows:?_func@12
?25????
?26????DECLARE_HANDLE????????????(HWND);
?27????#define?DECLARE_HANDLE(name)?struct?name##__?{?int?unused;?};?typedef?struct?name##__?*name
?28????The?two?combined?is
?29????struct?HWND__
?30????{
?31????????int?unused;
?32????}*HWND;?
?33
????*/
?34LRESULT?CALLBACK?MyWndProc(HWND?hWnd,?UINT?message,?WPARAM?wParam,?LPARAM?lParam);
?35struct?MSGMAP_ENTRY{
?36????UNIT?nMessage;
?37????LRESULT?CALLBACK()
?38}
?39
?40/**//*
?41????#define?WINAPI??????__stdcall
?42
?43????DECLARE_HANDLE(HINSTANCE);
?44????#define?DECLARE_HANDLE(name)?struct?name##__?{?int?unused;?};?typedef?struct?name##__?*name
?45????The?two?combined?is
?46????struct?HINSTANCE__
?47????{
?48????????int?unused;
?49????}*HINSTANCE;?
?50
?51????typedef?__nullterminated?CHAR?*NPSTR,?*LPSTR,?*PSTR;
?52*/
?53CString?myWndClassName?=?"any";
?54//typedef?LPCSTR?PCTSTR,?LPCTSTR,?PCUTSTR,?LPCUTSTR;
?55//typedef?__nullterminated?CONST?CHAR?*LPCSTR,?*PCSTR;
?56LPCTSTR?myMes?=?"my?message.";
?57UINT?myMesID?=?0;
?58int?WINAPI?WinMain(HINSTANCE?hInstance,?HINSTANCE?hPrevInstance,?LPSTR?lpCmdLine,?int?nShowCmd)
?59{
?60????/**//*
?61????typedef?WNDCLASSA?WNDCLASS;
?62????typedef?struct?tagWNDCLASSA?{
?63????????UINT????????style;
?64????????WNDPROC?????lpfnWndProc;//typedef?LRESULT?(CALLBACK*?WNDPROC)(HWND,?UINT,?WPARAM,?LPARAM);
?65????????int?????????cbClsExtra;
?66????????int?????????cbWndExtra;
?67????????HINSTANCE???hInstance;
?68????????HICON???????hIcon;
?69????????HCURSOR?????hCursor;
?70????????HBRUSH??????hbrBackground;
?71????????LPCSTR??????lpszMenuName;
?72????????LPCSTR??????lpszClassName;
?73????}?WNDCLASSA,?*PWNDCLASSA,?NEAR?*NPWNDCLASSA,?FAR?*LPWNDCLASSA;
?74????*/
?75????WNDCLASS?MyWndClass;//每個Windows應用程序都必須創建MyWndClass結構的一個實例
?76??????????????????????//并利用Windows對其注冊
?77????HWND?hWnd;
?78
?79????/**//*
?80????*?Message?structure
?81????typedef?struct?tagMSG?{
?82????????HWND????????hwnd;
?83????????UINT????????message;
?84????????WPARAM??????wParam;
?85????????LPARAM??????lParam;
?86????????DWORD???????time;
?87????????POINT???????pt;
?88????#ifdef?_MAC
?89????????DWORD???????lPrivate;
?90????#endif
?91????}?MSG,?*PMSG,?NEAR?*NPMSG,?FAR?*LPMSG;
?92????*/
?93????MSG?msg;
?94????//typedef?unsigned?int????????UINT;
?95????UINT?width;
?96????UINT?height;
?97
?98????//CS:Class?styles
?99????MyWndClass.style?=?CS_HREDRAW?|?CS_VREDRAW;
100????MyWndClass.lpfnWndProc?=?MyWndProc;//Pointer?to?the?window?procedure
101????MyWndClass.cbClsExtra?=?0;
102????MyWndClass.cbWndExtra?=?0;
103????MyWndClass.hInstance?=?hInstance;
104????MyWndClass.hIcon?=?LoadIcon(NULL,?IDI_APPLICATION);
105????MyWndClass.hCursor?=?LoadCursor(NULL,?IDC_ARROW);
106????MyWndClass.hbrBackground?=?(HBRUSH)GetStockObject(WHITE_BRUSH);
107????MyWndClass.lpszMenuName?=?NULL;
108????MyWndClass.lpszClassName?=?myWndClassName;
109
110????/**//*
111????#define?RegisterClass??RegisterClassA
112????WINUSERAPI
113????ATOM
114????WINAPI
115????RegisterClassA(
116????????__in?CONST?MyWndClassA?*lpMyWndClass);
117????typedef?WORD????????????????ATOM;
118????typedef?unsigned?short??????WORD;
119????*/
120????ATOM?classAtom?=?RegisterClass(&MyWndClass);
121????if(classAtom?==?0)
122????{
123????????return?0;
124????}
125
126????width?=?::GetSystemMetrics(SM_CXSCREEN)/2;
127????height?=?::GetSystemMetrics(SM_CYSCREEN)/2;
128
129????CString?title;
130????switch(nShowCmd)
131????{
132????case?SW_HIDE:
133????????title?=?"Hides?the?window?and?activates?another?window.";
134????????break;
135????case?SW_MAXIMIZE:
136????????title?=?"Hides?the?window?and?activates?another?window.";
137????????break;
138????case?SW_MINIMIZE:
139????????title?=?"Minimizes?the?specified?window?and?activates?the?next?top-level?window?in?the?Z?order.";
140????????break;
141????case?SW_RESTORE:
142????????title?=?"Activates?and?displays?the?window.?If?the?window?is?minimized?or?maximized,?the?system?restores?it?to?its?original?size?and?position.?An?application?should?specify?this?flag?when?restoring?a?minimized?window.";
143????????break;
144????case?SW_SHOW:
145????????title?=?"Activates?the?window?and?displays?it?in?its?current?size?and?position.";
146????????break;
147????/**//*case?SW_SHOWMAXIMIZED:
148????????title?=?"Activates?the?window?and?displays?it?as?a?maximized?window.";
149????????break;*/
150????case?SW_SHOWMINNOACTIVE:
151????????title?=?"Displays?the?window?as?a?minimized?window.?This?value?is?similar?to?SW_SHOWMINIMIZED,?except?the?window?is?not?activated.";
152????????break;
153????case?SW_SHOWNA:
154????????title?=?"Displays?the?window?in?its?current?size?and?position.?This?value?is?similar?to?SW_SHOW,?except?the?window?is?not?activated..";
155????????break;
156????case?SW_SHOWNOACTIVATE:
157????????title?=?"Displays?a?window?in?its?most?recent?size?and?position.?This?value?is?similar?to?SW_SHOWNORMAL,?except?the?window?is?not?actived.";
158????????break;
159????case?SW_SHOWNORMAL:
160????????title?=?"Activates?and?displays?a?window.?If?the?window?is?minimized?or?maximized,?the?system?restores?it?to?its?original?size?and?position.?An?application?should?specify?this?flag?when?displaying?the?window?for?the?first?time.";
161????????break;
162????}
163????CString?temp,?temp1;
164????temp.Format("hInstance:%d",?hInstance->unused);
165????if(hPrevInstance?!=?NULL)
166????{
167????????temp1.Format("??hPrevInstance:%d",?hPrevInstance->unused);
168????}
169????else
170????{
171????????temp1?=?"??hPrevInstance:NULL";
172????}
173????title?=?temp?+?temp1?+?"?????nShowCmd:?"+title;
174????hWnd?=?::CreateWindow(myWndClassName,
175????????????????????????title,
176????????????????????????WS_OVERLAPPEDWINDOW,
177????????????????????????10,
178????????????????????????10,
179????????????????????????width,
180????????????????????????height,
181????????????????????????NULL,
182????????????????????????NULL,
183????????????????????????NULL,//also?be?hInstance,
184????????????????????????/**//*[in]?Windows?95/98/Me:?Handle?to?the?instance?of?the?module?to?be?associated?with?the?window.?
185????????????????????????????Windows?NT/2000/XP:?This?value?is?ignored.
186????????????????????????*/
187????????????????????????NULL);
188????::ShowWindow(hWnd,?nShowCmd);
189????::UpdateWindow(hWnd);
190
191????myMesID?=?RegisterWindowMessage(myMes);?
192
193????BOOL?bRet;
194????/**//*
195????*?Message?structure
196????typedef?struct?tagMSG?{
197????????HWND????????hwnd;
198????????UINT????????message;
199????????WPARAM??????wParam;
200????????LPARAM??????lParam;
201????????DWORD???????time;
202????????POINT???????pt;
203????#ifdef?_MAC
204????????DWORD???????lPrivate;
205????#endif
206????}?MSG,?*PMSG,?NEAR?*NPMSG,?FAR?*LPMSG;
207????*/
208
209????//while(true);?//?ending?the?message?loop?is?often?the?first?step?in?closing?the?application.?
210????while(?(bRet?=?GetMessage(?&msg,?NULL,?0,?0?))?!=?0)?//The?thread?get?message?from?thread?message?queque?and?remove?it?from?queue
211????????????????????????????????????????????????????????//when?encounters?the?WM_QUIT?message,?it?returns?FALSE?and?ends?the?loop.
212????{?
213????????if?(bRet?==?-1)
214????????{
215????????????//?handle?the?error?and?possibly?exit
216????????}
217????????else
218????????{
219????????????TranslateMessage(&msg);?
220????????????DispatchMessage(&msg);?//Direct?the?system?to?send?Mes?to?appropriate?window?procedure.and?it??
221???????????????????????????????????//does?not?pass?the?time?the?message?was?posted?or?mouse?cursor?position.
222????????}
223????}
224????//while(::GetMessage(&msg,NULL,0,0))//GetMessage()從窗口消息隊列中索取消息
225?//???{
226?//???????::TranslateMessage(&msg);?
227?//???????//TranslateMessage()處理虛擬消息鍵(代表按鍵的消息)，
228?//???????//將它們譯為字符消息，送回到消息隊列。????
229?//???????::DispatchMessage(&msg);?
230?//????????//DispatchMessage()將消息發給應用程序的窗口過程WndProc()????????
231?//???}
232????return?msg.wParam;
233
234}
235
236LRESULT?CALLBACK?MyWndProc(HWND?hWnd,?UINT?message,?WPARAM?wParam,?LPARAM?lParam)
237{
238????HDC?hDC;
239????PAINTSTRUCT?paintStruct;
240????HWND?hWnd1;
241????CString?mesH,?mesM,?mesW,?mesL;
242????if((message?==?myMesID)?&&?(myMesID?!=?0))
243????{
244????????MessageBox(hWnd,"my?message?appear!","提示",MB_ICONEXCLAMATION?|?MB_OK);
245????????return?1;
246????}
247????switch(message)
248????{
249????case?WM_PAINT:
250????????if(hWnd?!=?NULL)
251????????{
252????????????mesH.Format("HWND:?!NULL");//,?hWnd->unused);
253????????}
254????????if(message?!=?NULL)
255????????????mesM.Format("?message:?%d",?message);
256????????else
257????????????mesM.Format("?message:?NULL");
258????????if(wParam?!=?NULL)
259????????????mesW.Format("?WPARAM:?%d",?wParam);
260????????else
261????????????mesW.Format("?WPARAM:?NULL");
262????????if(lParam?!=?NULL)
263????????????mesL.Format("?LPARAM:?%l",?lParam);
264????????else
265????????????mesL.Format("?LPARAM:?NULL");
266????????hDC?=?::BeginPaint(hWnd,&paintStruct);
267????????::TextOut(hDC,10,10,mesH+mesM+mesW+mesL,100);
268????????//MessageBox(hWnd,mesH+mesM+mesW+mesL,"提示",MB_ICONEXCLAMATION?|?MB_OK);
269????????//::TextOut(hDC,100,100,"小輝愿和大家一起進步!",20);
270????????::EndPaint(hWnd,&paintStruct);
271????????return?0;
272????case?WM_LBUTTONDOWN:
273????????MessageBox(hWnd,"你按下了鼠標左鍵,?又一個窗口生成了!?and?Post?a?myself?message","左鍵按下提示",MB_ICONEXCLAMATION?|?MB_OK);
274????????/**//*hWnd1?=?::CreateWindow(myWndClassName,
275????????????????????????"child",
276????????????????????????WS_OVERLAPPEDWINDOW,
277????????????????????????20,
278????????????????????????20,
279????????????????????????60,
280????????????????????????60,
281????????????????????????NULL,
282????????????????????????NULL,
283????????????????????????NULL,
284????????????????????????NULL);
285????????::ShowWindow(hWnd1,?SW_SHOW);
286????????::UpdateWindow(hWnd1);*/
287????????if(myMesID?!=?0)
288????????{
289????????????/**//*
290????????????1?If?the?application?supplies?a?NULL?window?handle?when?calling?PostMessage,?the?message?is?posted?to?
291????????????the?queue?associated?with?the?current?thread
292????????????2?HWND_TOPMOST:post?message?to?all?top-level?windows?in?the?system.
293????????????*/
294????????????//PostMessage(HWND_TOPMOST,?myMesID,?0,?0);?
295????????????
296????????????/**//*
297????????????The?function?waits?until?the?window?procedure?completes?processing?and?then?returns?the?message?result.
298????????????*/
299????????????if(SendMessage(HWND_TOPMOST,?myMesID,?0,?0)?==?1)
300????????????{
301????????????????MessageBox(hWnd,"get?result?after?send?message!","Congratulation",MB_ICONEXCLAMATION?|?MB_OK);
302????????????}
303????????}
304????????return?0;
305????case?WM_GETMINMAXINFO:
306????????if(hWnd?!=?NULL)
307????????{
308????????????mesH.Format("HWND:?!NULL");
309????????}
310????????if(message?!=?NULL)
311????????????mesM.Format("?message:?%d",?message);
312????????else
313????????????mesM.Format("?message:?NULL");
314????????if(wParam?!=?NULL)
315????????????mesW.Format("?WPARAM:?%d",?wParam);
316????????else
317????????????mesW.Format("?WPARAM:?NULL");
318????????if(lParam?!=?NULL)
319????????????mesL.Format("?LPARAM:?!NULL");
320????????else
321????????????mesL.Format("?LPARAM:?NULL");
322????????//MessageBox(hWnd,mesH+mesM+mesW+mesL,"提示",MB_ICONEXCLAMATION?|?MB_OK);
323????????return?0;
324????case?WM_DESTROY:
325????????::PostQuitMessage(0);
326????????return?0;
327????}
328
329????return?::DefWindowProc(hWnd,message,wParam,lParam);//?system?for?default?processing
330}