% @$ k# ^ q( a! m) H. m4 E //创建主表面对象 ! P, T8 N+ b0 X1 z% X9 D# K
if (lpDD->CreateSurface (&ddsd, &lpDDSPrimary, NULL) != DD_OK) ; i7 k# E: N( J) Q8 y return FALSE; $ U$ P* D' S1 n* H4 O) r K
* W w M0 C& P4 o9 N7 D: e
LPDIRECTDRAWCLIPPER lpclip; ! \* M% H$ U D lpDD->CreateClipper (NULL, &lpclip, NULL); 6 i. B: w, h6 i7 n
lpDDSPrimary->SetClipper (lpclip); 5 F1 g% ^4 W9 g( T: ?! j% G
lpclip->SetHWnd (NULL, hwnd); 0 Q/ k" d$ u. ~, Z1 ], X N lpclip->Release (); - u6 K8 I9 B5 Z W) T) K2 p% t
' K4 x! E5 a( i8 S ZeroMemory (&ddsd, sizeof (ddsd)); $ s2 l! N9 G7 A3 a4 ^% N" z ddsd.dwSize = sizeof (ddsd); ! W6 W4 p, Q. R+ @4 H, g$ @3 m . I ~+ w8 u# x: e" |/ `( E ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT; 4 e* @7 o% c$ V* P ddsd.ddsCaps.dwCaps = 2 }+ o8 M p. s7 \! }% d. p( }
DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY | DDSCAPS_LOCALVIDMEM; : q6 e# G' U( M$ y ddsd.dwWidth = MAXWIDTH; 7 ?2 G: D: {% k6 V+ j, [6 m ddsd.dwHeight = MAXHEIGHT; : `0 G$ S' p( C2 u( R8 o
. e( ~- X* @0 A, k9 d; M/ V2 ] //创建后表面对象 8 V& {+ g2 F- }
if (lpDD->CreateSurface (&ddsd, &lpDDSBack, NULL) != DD_OK) 0 b2 l# h" S2 S0 Z
return FALSE; 2 g, b: C0 x+ O- x. `* Z3 e7 x- m& h. I6 ~" m7 Q4 G
return TRUE; 6 r" l, k. F& O- i8 z } 9 n5 D" f0 a/ T& A, B, Q O* k
& M: e v( Y% U0 C( k //------------------------------------------------------- 9 P5 X$ Q& ~) W Z% M
//函数:FreeDDraw() 3 a5 B" R" b' F
//功能:释放所有的DirectDraw对象 4 F4 {. e$ O4 C+ d
//------------------------------------------------------- $ J! r: c( L* n1 h4 g/ ^3 ^6 {% v
void 1 M1 A0 B! Y9 P- S$ g8 [+ R FreeDDraw (void) $ `- h2 ^4 V/ W+ W! j8 L { t" {& a @ |
if (lpDD != NULL) + l, j% u, R: g4 x3 J
{ / n) k; ~; g2 N& e) Z9 o
if (lpDDSPrimary != NULL) ( e& \( S/ E' J: H& W* T { ( Q* S9 Z! c$ t9 i. G: q
lpDDSPrimary->Release (); * b: m# n/ [( r$ K" U7 F! B
lpDDSPrimary = NULL; j$ K- A* f" T
} 4 _8 f# B% z* q1 }" P8 H5 J lpDD->Release (); 5 h7 I- }. V3 _, ]* r1 @7 F" z lpDD = NULL; , `5 b8 n3 l" N( j [2 n1 ^; q } ; Z5 `& h; U; ?
} ( h( r* u- H% e8 ~/ z$ n D3 p" v1 N' o$ g9 D% O( a5 e void ' W& H8 j$ G* ^' R _TextOut (int x, int y, char *string, COLORREF color) $ k6 t" |3 a5 w9 F
{ 1 O0 ]( d8 S# O1 e
HDC hdc; , d4 m" F9 }. L E6 K2 x3 t
if (lpDDSBack->GetDC (&hdc) == DD_OK) # d1 G/ ^) k6 W6 J& k
{ ) c, S4 e3 A; k: q, Y SelectObject (hdc, hfont); 2 M0 h5 {( w- i* ] ^! L9 e
SetBkMode (hdc, TRANSPARENT); 8 b$ Q: v- T0 X$ n, b
SetTextColor (hdc, color); % ]2 S" E+ H: f+ H: o1 b
TextOut (hdc, x, y, string, lstrlen (string)); # g# b* o7 y' \2 I
lpDDSBack->ReleaseDC (hdc); : O# m: K/ t G } 6 G, q9 U6 }! I! i* J4 w+ [
} # @4 @- h I' E% z' | r J
9 P5 _( ?: t- g$ [$ `7 ]
//------------------------------------------------------- 9 z. G5 A& M: x% A
//函数:MainLoop() 3 {0 A! z4 c* M) a- r( y4 A //功能:游戏主循环 2 e, [9 z D6 F; x //------------------------------------------------------- / A& Z) u; E* ~/ [/ f, {9 R3 i void 3 f" o2 K& r1 | I& F
MainLoop (void) ( t. J- }3 y8 e& |+ ?% ]
{ T2 [1 w6 s7 K) C+ [- R$ E
//后台缓冲表面上的操作 9 }* Q3 r1 Q; W. X3 ?
HDC hdc; 3 u% H* o0 t, G+ ^5 s9 E RECT rect; //这个是主表面的区域 + W+ c8 z* R1 o/ l RECT rectback = { 0, 0, MAXWIDTH, MAXHEIGHT};; //这个是次表面的区域 $ Z2 E$ `& U$ t5 b _1 q% v! ` if (lpDDSBack->GetDC (&hdc) == DD_OK) + ]6 H/ q$ y. G7 N+ @3 y { ' P0 j; J2 U0 S8 I( N G4 [
//清屏 0 q5 t" r$ i, u$ J% \: Q3 D
GetWindowRect (hwnd, &rect); //取得整个窗口区域 2 ]. {& s/ K; m* Y9 Q
rect.left += GSM_CXBORDER; //修正到主表面区域 & u: }7 U9 V8 F! d- o) l rect.top += GSM_CAPTION + GSM_CYBORDER; % T. x) `& v" {! J/ }: u
rect.right -= GSM_CXBORDER; % E0 t: q* {3 m" I, a8 ]
rect.bottom -= GSM_CYBORDER; ; P6 D* P2 ]2 P% N. c" U& G7 h FillRect (hdc, &rectback, (HBRUSH) GetStockObject (BLACK_BRUSH)); ; `, m0 D4 {! s7 S% C7 E# u/ ` lpDDSBack->ReleaseDC (hdc); # B8 ]6 d2 U5 {8 w
} 3 }$ C, n5 B. c+ w* V% D* z" _9 R# I
_TextOut (220, 200, szMsg1, RGB (0xf0, 0xf0, 0xf0)); V* U; s* v+ T3 |) {8 N9 n5 [
_TextOut (220, 220, szMsg2, RGB (0, 255, 0)); 8 ]: S+ Q9 W; D4 M: m: Z, J0 C+ Y4 e) t
lpDDSPrimary->Blt (&rect, lpDDSBack, &rectback, DDBLT_WAIT, NULL); 5 f0 C" O5 a6 ]1 F3 c" t# O
} . n1 g) K2 y8 I' v7 m
+ R; K$ B! O- v " H. R( O% c0 P 编译后,把_TextOut的汇编代码植入游戏(可用ODBG的二进制复制粘贴功能),并修改相关的api调用。 ( J% r2 e: { q7 U% u8 C
其中int x, int y, char *string, COLORREF color,lpDDSBack都已经分析出,而hfont需要在游戏开 , B9 p$ G' I8 n# K. \& u% z
始时用CreateFontA创建,偷偷保存在数据段的末尾,结束前用DeleteObject析构。 * y) L1 M/ B% B5 I$ u! ]0 k* C/ T
& f3 R9 g* `2 T1 d( i8 z3 R
代码: 8 k4 q2 N' @9 a* K2 Q( }* N2 Z' Z
04634300 51 push ecx ; _TextOut 7 X/ u# C. [ W1 J' H
04634301 A1 54840F04 mov eax,dword ptr ds:[40F8454] # a% `: y, L; @- S, A) ]# ~ 04634306 8B08 mov ecx,dword ptr ds:[eax] 1 }7 n' i% v6 m# H; k" x5 F& e( j/ e$ q
04634308 8D1424 lea edx,dword ptr ss:[esp] . x, U6 Y* T% N6 ~
0463430B 52 push edx v5 [4 P9 [3 K; R
0463430C 50 push eax " a8 o% s- J, M6 H8 C# D3 }
0463430D FF51 44 call dword ptr ds:[ecx+44] ; BackSurface->GetDC 8 Q3 ]+ p/ x2 w" S 04634310 85C0 test eax,eax ' _* B( Z8 i5 O! s, x: i/ Q# Q- y
04634312 75 61 jnz short war_in_t.04634375 8 L3 O: I6 a! Q. H
04634314 A1 FC1F6204 mov eax,dword ptr ds:[4621FFC] ; hfont % y, ]% a3 m3 D9 M
04634319 8B0C24 mov ecx,dword ptr ss:[esp] J3 t& \. w2 K+ O2 Q+ ^ 0463431C 56 push esi Y% |& Y5 h8 o 0463431D 50 push eax , E5 F) B8 R- |* y
0463431E 51 push ecx 4 n, K+ h- Q' K 0463431F FF15 34105B00 call dword ptr ds:[<&GDI32.SelectObject>] ; GDI32.SelectObject / W: p4 R/ g' a5 ]
04634325 8B5424 04 mov edx,dword ptr ss:[esp+4] % A, d5 A' s8 q3 D! M4 J7 F
04634329 6A 01 push 1 & O3 l! q& K! T 0463432B 52 push edx 3 `% u( b& t' S" s' i8 V
0463432C FF15 E4806304 call dword ptr ds:[<&GDI32.SetBkMode>] ; GDI32.SetBkMode ! F' {$ S& S) ?5 C0 l; O x6 h+ a 04634332 8B4424 18 mov eax,dword ptr ss:[esp+18] ( }+ k3 _, m% R! F, N: |
04634336 8B4C24 04 mov ecx,dword ptr ss:[esp+4] ( ~2 m" B3 x2 D( X 0463433A 50 push eax # T0 r7 v: O2 |
0463433B 51 push ecx / u- {8 O& ^9 a; l 0463433C FF15 4C105B00 call dword ptr ds:[<&GDI32.SetTextColor>] ; GDI32.SetTextColor % S. n b6 `8 W* c. m- T 04634342 8B7424 14 mov esi,dword ptr ss:[esp+14] 3 D: e: [% V. S. a4 ?
04634346 56 push esi ?- C( a1 G, d8 ^ 04634347 FF15 2C115B00 call dword ptr ds:[<&KERNEL32.lstrlenA>] ; KERNEL32.lstrlenA ; k/ R1 X* J1 z, O) g
0463434D 8B5424 10 mov edx,dword ptr ss:[esp+10] * g/ O+ Y a7 W" @6 Z3 j 04634351 8B4C24 04 mov ecx,dword ptr ss:[esp+4] , n3 v0 [( ?0 O& v* Q$ q
04634355 50 push eax C% v4 g- U+ O, J, ?% n. ^0 ?
04634356 8B4424 10 mov eax,dword ptr ss:[esp+10] 0 v6 t+ W: M6 r" b3 K
0463435A 56 push esi _) F: \0 {6 Z: _* x( K) U
0463435B 52 push edx * }+ P+ @. M# B6 L5 n. W8 e" Q
0463435C 50 push eax ) Z5 J4 _: v# H* h$ ~
0463435D 51 push ecx 3 f$ _* H7 f3 W' w* z6 l1 ` 0463435E FF15 50105B00 call dword ptr ds:[<&GDI32.TextOutA>] ; GDI32.TextOutA - C H7 R7 L1 }8 T1 s& r 04634364 8B4C24 04 mov ecx,dword ptr ss:[esp+4] ; e3 E6 w0 a6 N
04634368 A1 54840F04 mov eax,dword ptr ds:[40F8454] & P3 h2 r# X- E' H8 J* V
0463436D 8B10 mov edx,dword ptr ds:[eax] : s$ L ^( q6 I$ w! s h
0463436F 51 push ecx / {! `/ M8 g5 l& m4 Q" j) l4 R 04634370 50 push eax 3 a4 z- @ L5 C- {
04634371 FF52 68 call dword ptr ds:[edx+68] ; BackSurface->ReleaseDC $ P) R3 [% c* v( k5 b# G 04634374 5E pop esi 8 c; p! [- |+ f% Z. Z& A) l 04634375 59 pop ecx # K3 Z0 A0 i1 \; M. S 04634376 C3 retn 0 b3 G6 _0 z" ]5 P2 I0 ^3 o
" T6 D$ ^" q+ s7 N. ~1 X* p