|
|
编程技巧20法(11-20)
- _' V: v6 Y9 q# [9 ? 徐景周
; A- a( B0 x# X, f" ~, t1 W日期:2002-09-12 5 w0 Q3 | t( a: H' \
7 [' o: y1 |& a0 }
9 N0 }7 k1 D. }6 y1 p
! C: ?) C& K; r: W: C11. 如何判断当前操作系统的版本3 {; k% i8 k4 m8 [1 u6 v
9 k) J* h# [% H+ v
//------------------------------------------------------------------------------------------------. h; K8 M3 h: R* i7 v7 y4 Z- [8 |
/ ^. t0 Q" W3 l& l; y- _
//判断操作系统涵数及变量
6 J" Z( W1 Q( x& w8 A8 _
6 Z2 Y& p9 y% x. e, ptypedef enum tagWin32SysType{
# G, \# W f7 e7 \ B0 v9 t; Q Windows32s,0 e9 r; F, S* U c3 L+ B/ a
WindowsNT3,
+ ?, O' W7 \! q" E Windows95,
+ t. j9 G2 W9 g9 `: P2 p m4 e/ k Windows98,! r$ \! S& E1 Y( u
WindowsME,- v' H7 ^" A) w* n5 ?
WindowsNT4, P7 O# T4 R; i. a+ l
Windows2000,. }5 o+ Y$ B- M! {
WindowsXP
+ {' s' z: Y! d% {' w7 S}Win32SysType;% n$ h: G+ G4 h* n; W* m
/ M: D+ ?# A- P2 [
. K$ j4 a% C# |: @1 y//判断操作系统涵数及变量,jingzhou xu a& ~; H* X* p1 j/ y* q
: r6 ` A" M- J' \4 a% _: {
Win32SysType IsShellSysType()2 b6 |$ e6 N5 Z* z( F
{
" z, y4 U h# m: l Win32SysType ShellType;- b% o) u6 n' B" l5 F# O
DWORD winVer;
2 k$ E& p8 C' q6 C& N OSVERSIONINFO *osvi;, R J. W/ f7 ~% k! J$ G1 S. h5 f
% ~2 `2 ^" n. {/ f6 M8 H winVer=GetVersion();
6 M+ K5 F# ?7 C6 E! a4 g
+ ?1 g* f n: b" }6 J" P if(winVer<0x80000000){/*NT */
& K0 ]# l8 [( U$ R o ShellType=WindowsNT3;* j- P5 C5 e6 }* a }4 N8 H
osvi= (OSVERSIONINFO *)malloc(sizeof(OSVERSIONINFO));
$ h8 S" ?% {6 Y7 _ A if (osvi!=NULL){
- u. D% w$ L7 D2 D8 V- _ memset(osvi,0,sizeof(OSVERSIONINFO));( U2 n% F, D- r
osvi->dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
) N/ v* D+ O2 w GetVersionEx(osvi);
/ z& t% Z# B" M- @7 J if(osvi->dwMajorVersion==4L)ShellType=WindowsNT4;
0 _" g" z" ^8 n else if(osvi->dwMajorVersion==5L&&osvi->dwMinorVersion==0L)ShellType=Windows2000;
3 \ p7 y/ Y4 P3 t3 q$ c else if(osvi->dwMajorVersion==5L&&osvi->dwMinorVersion==1L)ShellType=WindowsXP;0 W7 l: E8 k& w2 o
free(osvi);* ^+ A3 w8 U: H4 Q- h
}
1 m: C" ^7 c7 D O# R }4 w# D) D4 l5 |7 P2 x! t/ W
else if (LOBYTE(LOWORD(winVer))<4)8 o* K( f9 M. e h0 Z
ShellType=Windows32s;
7 v: c; c8 [- g1 @4 X1 |- z/ P% r5 d+ z$ Y else{: S5 _' l8 z1 s7 E
ShellType=Windows95;
) w3 u9 _; O1 g, u8 [ osvi= (OSVERSIONINFO *)malloc(sizeof(OSVERSIONINFO));
- `: V! q) m( ?! e, a- \ if (osvi!=NULL){& k7 v% l2 R/ s$ E
memset(osvi,0,sizeof(OSVERSIONINFO));
5 f. |: B# }* w, { osvi->dwOSVersionInfoSize=sizeof(OSVERSIONINFO);0 D; Z8 G% @0 m5 |7 s
GetVersionEx(osvi);
+ V6 C. W* e7 ]& `$ [" R if(osvi->dwMajorVersion==4L&&osvi->dwMinorVersion==10L)ShellType=Windows98;
% Q3 O9 r, b" K! \6 H0 } w, m else if(osvi->dwMajorVersion==4L&&osvi->dwMinorVersion==90L)ShellType=WindowsME;* a: J' H# D3 P- @$ n+ o' ~
free(osvi);6 q s; o: u" C8 H0 L0 y0 ~
}
6 ~" ~& x2 _7 M+ d7 ` }
# Z8 s5 Z* I4 m return ShellType;
) R6 @( ^ R: V6 B$ q; V}3 h$ q6 x. ~+ {; z+ ^ v
+ j4 r3 c! H) ~6 L% w: ~* B
//------------------------------------------------------------------------------------------------
- c9 B& j6 a7 j% |/ I* ?) N# W
5 q1 q+ }& u9 N
6 z/ f7 D) D& J; w; I2 m' f$ d, ^12. 如何在指定矩形框内水平/垂直显示多行文字
* [* ]: D+ s! R$ n
& l+ @: ~/ @0 n) c5 u///////////////////////////////////////////////////////* l; n( m' M! ~+ \) x
//说明:
8 d( Y3 ~3 g& k0 F6 m- ~// 在矩形框中水平或垂直显示多行文字,jingzhou xu.% K4 R0 f \( C
// lMode: 排列方式,0:水平方式; 1:垂直对齐 ) A+ w5 W1 \7 X9 e$ B) Q% i1 x
// lHori: 水平对齐方式, 0:左对齐; 1:居中; 2:右对齐; 3:自定义: I" G" ?$ t+ M7 {
// lVert: 垂直对齐方式, 0:顶对齐; 1:居中; 2:底对齐; 3:自定义
' Y" F! C5 r! i! i. z d9 K///////////////////////////////////////////////////////0 G# G, I- b! q7 l
! s+ M U2 A( {. i: v T5 iCRect DrawTitleInRect(CDC *pDC, CString szString, LPRECT lpRect, long lMode, long lHori, long lVert)
( H% {% _# }; G! A/ B0 z{
6 ~6 C8 e/ \& A% y# H( W TEXTMETRIC tm;1 m# Y! E4 a! E7 j/ @2 H
pDC->GetTextMetrics(&tm);2 |# j2 |) R( ^1 S1 t5 B* G
int tmpWidth=tm.tmAveCharWidth, tmpHeight=tm.tmHeight;
^. J/ K' C+ D5 N6 b" ?
0 C* E- O0 k9 L2 J" c( H* J+ o CRect rcInner(lpRect);/ T* M; z: c! j( H( @( r
if(lMode==0)
7 z, F$ v) M# B1 W {$ E; H* j' R c2 i ~& Z: o1 U
rcInner.left+=tmpWidth;
8 Y. N, z2 s' { O. u rcInner.right-=tmpWidth;) ^0 A7 l; V/ e: Z* J
rcInner.top-=tmpWidth;
* o; L6 L# P* c" S4 s' n rcInner.bottom+=tmpWidth;
/ D& r! |/ T N. _6 }+ p' R) p! ]/ ^ }& h9 O# G; |) D& V( v
if(lMode==1)% k$ m6 g0 z5 q
{
" i2 a+ }4 S* r: |3 q" h rcInner.left+=tmpWidth;* m) ]3 s8 b" ?+ O0 z1 t; q
rcInner.right=rcInner.left+tmpWidth;, ?5 @3 [9 g3 _) ?, o# r+ T5 z
rcInner.top-=tmpWidth;
/ H0 b1 h7 n( u" b# B' T rcInner.bottom+=tmpWidth;& ^+ A6 z% |1 @4 h5 C- Z: I7 _% e& X
}
+ K1 g1 f, o- [8 m1 s: v
* [( \' ]( K7 a% [) F9 i pDC->DrawText(szString, rcInner,DT_CALCRECT); M0 [8 x( L: [
switch(lHori)6 a! u5 `8 ?$ b+ g
{
# V8 w: }( t8 \ case 0:
. x R# e/ j6 b& F( s& Z1 w break;4 I! t' Y1 [" @" t3 K0 y
case 1:
/ k& t* R; o. F- P {
5 F0 u3 Q: |" ^2 g, e) `2 S* Z long xOutCent=(lpRect->right+lpRect->left)/2;) {% q* h2 q& V4 G* z B$ m
long xInnCent=(rcInner.right+rcInner.left)/2;# ^; [/ l+ ~6 G$ G3 }
rcInner.left+=(xOutCent-xInnCent);
! M3 O i, J0 z- | rcInner.right+=(xOutCent-xInnCent);
- \0 [1 M3 C" Y }3 |2 @4 }+ B% B2 Q
break;
4 n; I2 ^: Y% a7 {" C case 2:
3 }1 a8 V4 P* |8 W& N K {% F) s3 O7 x4 S6 n' \. a
long lInWidth=rcInner.right-rcInner.left;- {; q" F9 w8 n: u2 Y/ ?
rcInner.right=lpRect->right-tmpWidth;
o1 C; K5 r* \* G" V" |' ? rcInner.left=rcInner.right-lInWidth;
7 F2 ]$ s6 k6 F& J ~0 S) s }
4 T+ C9 J2 U- K( b7 X8 { break;
+ {8 }) I# h+ [! h. u default:
& u9 U% Q! x. q+ {" R break;
5 M- x9 y0 P3 i$ D. o' o- Q }
P5 R2 S# E2 F! x; r$ J. X
8 W6 \0 L+ z4 |& F k/ Q. A8 D- }/ x. _ switch(lVert)+ c$ n% J; K7 V' _/ S( w3 K
{
; ^ i7 O* a: X6 o! i case 0:& z8 V9 Q4 _9 W$ z
break;' j, }* [& I0 @, p7 {
case 1:
# a% }9 |0 v3 ~& Z7 i: S7 I8 V, { {$ `* M. y8 U. }& |
long yOutCent=(lpRect->bottom+lpRect->top)/2;
. U/ I X4 ^ Y% r5 L+ w; Z long yInnCent=(rcInner.bottom+rcInner.top)/2;. h6 \* l: R) i7 b) v. O! D. h9 n) }1 B
rcInner.top-=(yInnCent-yOutCent);
2 x% W! a' ^* v! @ rcInner.bottom-=(yInnCent-yOutCent);
; c6 q0 n T, O, v- X }- `& f z6 l5 \9 o; o% ]
break;
" ^6 ~5 V! M; l- g case 2:1 C9 o8 m4 \, L! n: M0 m' V3 w
{
/ ?" ]; D2 b# p& n long lInHeigh=rcInner.top-rcInner.bottom;
8 ]( a3 {: _5 b. N$ Z1 ^ rcInner.bottom=lpRect->bottom+tmpWidth;
7 a4 X! H4 H8 c9 p1 Z2 ^ rcInner.top=rcInner.bottom+lInHeigh;+ D, |8 M/ Q1 s
}' w" F+ E" q; R, N1 g( @4 K
break;& x: W7 j* w, c+ G
default:
' X; g2 a% J3 T3 a) W, t9 c5 J break;
* h: K2 u3 l- g1 f' |) s5 Y8 p }
2 v+ K9 n1 N( O$ ^/ i6 G7 E, g: O! P' P
//---------------------------------------------------------------------------------------------
* G- b* i; Z6 O3 Z% x, j* N //功能:根据新、老矩形,重新计算行数,使文字多行显示,jingzhou xu( E2 O! A( d, C; j+ E4 Y# o
//---------------------------------------------------------------------------------------------
! u( c/ \4 H2 d5 x //一行中最大字符数! N* N" c6 Y3 n" ]: @3 O+ L6 i" C# ?
int nMaxLineChar = abs(lpRect->right - lpRect->left) / tmpWidth ;
5 e6 g% A& Y; `% K( e8 [' y3 d7 A$ [, I //记录当前行的宽度
+ O3 `$ u" g3 y2 O5 S3 X$ M& w8 z short theLineLength=0;
* K" P1 M) P: u: k( K( s //记录当前行中汉字字节数,以防止将一半汉字分为两行6 B& ]& }+ a. K ?, l5 u
unsigned short halfChinese=0;
6 b; t s4 x. M" r
D1 r5 i& F# X. Z for(int i=0; i<=szString.GetLength()-1; i++)
) [/ }5 [3 y0 T( h# A {
# \, C! g6 v, H$ }3 R. `: j if(((unsigned char)szString.GetAt(i) == 0x0d) && ((unsigned char)szString.GetAt(i+1) == 0x0a))
2 U% B: o$ \$ y9 l0 R- n theLineLength=0;
! a# B" M# L; M, c, k$ t5 I! ^4 H. M0 k0 E4 X0 u8 w- N, u5 h* M' W& v
//大于0xa1的字节为汉字字节
. L/ I' t' D& `% y if((unsigned char)szString.GetAt(i) >= 0xA1)
9 D" Z% J$ w3 O, W halfChinese++;
7 |$ k, i7 p3 I+ V) U theLineLength++;0 \% _! `4 `8 H" D6 P, R0 C, S9 J% {1 v
. J: t5 J l' L" A4 b' x1 } //如果行宽大于每行最大宽度,进行特殊处理. ]; `4 a# H1 O* n" m F
if(theLineLength > nMaxLineChar)/ `" H4 c i8 a) |
{6 t/ H. o9 Z4 X3 o# ^
//防止将一个汉字分为两行,回溯
2 Y1 K5 `* Y& H# s if(halfChinese%2)
# t. |' w- w! K T; W! E/ f( q {# q5 Z& [& r' g; B: b* o, G" m
szString.Insert(i,(unsigned char)0x0a); N' |7 }$ O! ^3 C7 d4 O' d2 ?8 m
szString.Insert(i,(unsigned char)0x0d);% s+ _2 n4 C z% Q9 c. f, ?( h
}
p5 R- V0 R$ l6 U, y2 o) n else
/ a( r- s4 Z$ |; \) |, S2 Y4 f! }; N {. V1 |% I2 t2 G! w) t5 D3 {
szString.Insert(i-1,(unsigned char)0x0a); y1 ^# Y* {( k* d, W/ G" @
szString.Insert(i-1,(unsigned char)0x0d);
, }, z, G0 I6 @6 d2 n }
: l4 Z# d( s+ s+ s % C9 s0 k7 ?5 P# ~: ~
theLineLength = 0;) |5 U, G: k( C; D' t
}3 f( w7 n9 c/ x1 J0 v2 E
}
/ w' a( S3 s& e+ v/ x4 N- g6 Q$ z* y' F6 o+ P S
//重新计算矩形边界范围
: g: ^; `/ }- I- D( K' ^9 x// int tmpLine = int(abs(szString.GetLength()*tmpWidth / abs(lpRect->right - lpRect->left)-0.5));
/ Z6 E; x. z V w+ }8 z
8 @# z# ]; P# N) p6 u6 B6 y// tmpLine += (szString.GetLength()*tmpWidth % abs(lpRect->right - lpRect->left))? 1 : 0;6 P2 V% {; I: J
// if(tmpLine == 0)3 T; Z+ v$ s/ K& H2 M4 y
// tmpLine = 1;
$ }7 Y" B( S7 t7 ?' y( @8 R
/ _) |, c# Y3 C& ` if(rcInner.bottom > lpRect->bottom)8 W- l7 ] x" C7 O' A' r
rcInner.bottom = lpRect->bottom;+ L5 C/ s; |! ]$ {6 B
if(rcInner.top < lpRect->top)
0 `2 t/ L) [" n3 Q9 w rcInner.top = lpRect->top;6 F5 }: C) L+ X, _7 |. K6 m
2 O+ B; p1 s& p1 L+ m& R. e7 ^0 `
//---------------------------------------------------------------------------------------------5 Z& `* c$ q. e% x$ o" T
4 ]/ d( K t, ~4 e+ r
if(lHori==0)$ M7 U% X& W+ ]8 `" g0 w
pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_LEFT);
' }) n" Y; X4 _$ Z8 o# z else if(lHori==1); a: o0 t9 h/ z- |. w* Q
pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_CENTER);
% W. p) j4 D5 w1 l/ d" ?5 n, b else if(lHori==2)
4 f, j: {3 N* [# C4 Z8 V: u6 N2 R* X0 X pDC->DrawText(szString, rcInner, DT_WORDBREAK|DT_RIGHT);
" b; G C. W! g" Y return rcInner;. m; O- x5 Y G1 I
}
: i% \; l8 [8 v6 j5 o+ h7 Z1 x" p/ M" O5 T9 e
: n& C- u$ G& f2 z: e13. 如何在指定矩形中旋转显示文字
& M, |3 e3 @& M) f
^. q0 \2 C4 N- C3 [///////////////////////////////////////////////////////2 i3 |" i0 @5 D6 a" T( U2 T0 R
//说明:
: ^1 D7 d C* n/ G: B, d// 在矩形框中旋转方式显示文字,jingzhou xu" P6 Q' t6 q1 F8 E
//参数: % b/ T' X# ?4 b: L' [
// pDC: DC指针& ~( z) o# E9 ~: P( N |; g# R
// str: 显示文字
1 U0 D5 P, I( l// rect: 显示范围; }4 L! M5 h' K( q% p& A
// angle: 旋转角度
; n5 t7 F% Z9 @+ j0 [2 Q// nOptions: ExtTextOut()中相应设置5 ?1 `) Y- q; k3 J
///////////////////////////////////////////////////////2 A' {" h& C4 Z M- x3 T: s
2 H! s/ i) H: ?void DrawRotatedText(CDC* pDC, const CString str, CRect rect,
! U* s2 x! g8 n. [: N* [ double angle, UINT nOptions)
; d- F) S( t( Q/ S: S3 B* r{, S$ G7 F& T7 g
//按比例转换角度值7 s: _ a4 V$ m x8 ?- K
double pi = 3.141592654;
4 M2 B( m/ o. f' X. ?5 k double radian = pi * 2 / 360 * angle;
' X2 Q# \' d0 m* y; t9 g& ]1 q
2 l: h5 a- R8 U9 T7 m //获取显示文字中心点' @+ Z M @9 F! a( l) c0 U! b- D
CSize TextSize = pDC->GetTextExtent(str); ^# c/ G' x# J' R# U0 C/ k }' f
CPoint center;
, O* d7 G! t4 m9 w# M! r center.x = TextSize.cx / 2;
- _1 H* P" c) i( n center.y = TextSize.cy / 2;9 T3 _5 f" B, |, q9 Q2 _
. l4 k" D( T$ h @# C7 r
//计算显示文字新的中心点
' P2 y' F2 g' P$ t2 S CPoint rcenter;
' ~1 r" a1 J; F rcenter.x = long(cos(radian) * center.x - sin(radian) * center.y);
' p" N' a4 Y3 y- a2 u- ]/ f rcenter.y = long(sin(radian) * center.x + cos(radian) * center.y);
" C' @( i- D# G
9 T0 T; [( @9 K4 O) [% D4 y) Y //绘制文字
& q7 g# v4 C" n! g" e+ }! Y pDC->SetTextAlign(TA_BASELINE);
3 d1 b$ j% p% ]; T: f pDC->SetBkMode(TRANSPARENT);
% l: `) Z5 d7 q pDC->ExtTextOut(rect.left + rect.Width() / 2 - rcenter.x, - [; r! R8 G7 H B+ u
rect.top + rect.Height() / 2 + rcenter.y,/ V) x: ~* ~9 j4 t @$ S% w0 T0 \
nOptions, rect, str, NULL);
" O/ u; j5 d7 ? `* [}/ v. t1 D) m: k9 H g
2 m" Q* v+ w. I$ z
0 x* E/ l* d% I1 p( O
14. 如何将32 x 32像素图标转换为16 x 16像素值的图标
8 ?- u) _/ y- ]% N- x9 D" ?; [" X. A& c* r& U
HICON Convert32x32IconTo16x16(HICON h32x32Icon)
3 c2 W" C. V1 D8 W3 Y9 r9 J9 _{
+ A) e# G9 C! H: w9 a3 `% [& l HDC hMainDC, hMemDC1, hMemDC2;
: K6 I2 ^+ M* B' L, {3 t: d HICON h16x16Icon;
- h# [+ G7 W3 g( z+ L8 q. w BITMAP bmp;' o4 ^$ \ O4 G$ P
HBITMAP hOldBmp1, hOldBmp2;! g o% w* F; ^, V* ?2 a! }5 e1 ?
ICONINFO IconInfo32x32, IconInfo16x16;
* Z( k, E# g( L+ M' Y7 _- ^; ?
! o1 g' L2 j% d. f GetIconInfo(h32x32Icon, &IconInfo32x32);
' H0 C& I1 i1 R- G- M/ D, ~
1 c8 x/ `, C" l, R! N0 F hMainDC = ::GetDC(m_hWnd);
1 [* A4 i, @1 q hMemDC1 = CreateCompatibleDC(hMainDC);) `! n& J6 l: b: e
hMemDC2 = CreateCompatibleDC(hMainDC);
" ]& U5 x% g) e+ h
5 D' T1 H* u3 ~0 u, R9 j# B GetObject(IconInfo32x32.hbmColor, sizeof(BITMAP), &bmp);! r+ D2 ?" ^- }: X6 A7 B! H% N; q
5 F) G5 Q* ~% X+ i( g6 X X IconInfo16x16.hbmColor = CreateBitmap( 16, 16,
8 z/ x3 m6 B a* F0 n% ^. K% b9 n) \, s bmp.bmPlanes, b8 W. D! T( f& P+ F$ O
bmp.bmBitsPixel,
5 a8 ~; t0 l$ e: \, U) a" h NULL);
: F4 }+ H8 C# a; v$ L" p2 d* y8 d- z0 c; ~- Y
hOldBmp1 = (HBITMAP) SelectObject( hMemDC1, ! o$ O' I* C2 k; t2 u
IconInfo32x32.hbmColor);' y; u7 |, Y/ c j! Z0 e
hOldBmp2 = (HBITMAP) SelectObject( hMemDC2,
- j3 g% I+ P4 ]% c. @, b IconInfo16x16.hbmColor);' s2 K2 n; E" r; E3 _+ i
2 r: m! t$ ^5 ? StretchBlt(hMemDC2,
" m( l* O. n8 g% W 0, 0,
7 W8 M) x! @5 i! y, T7 x 16, 16," V4 R2 b, ?/ }; O, Y
hMemDC1,: l. q0 e: o& y) R; ?
0, 0,- ~# W+ D: M% T# X/ [
32, 32,2 ` N1 C' ?4 V+ L3 s _
SRCCOPY% m/ T0 ~4 a0 a* d8 K
);9 P7 G! [6 ^: Z6 G" E' T9 w; p R: ]
9 v2 a: g3 H& f
GetObject(IconInfo32x32.hbmMask, sizeof(BITMAP), &bmp);
9 u; b+ W: I7 E% q) B5 J6 o" t( D- q& K
IconInfo16x16.hbmMask = CreateBitmap( 16, 16, 9 b% a4 S5 B2 s+ B
bmp.bmPlanes, ! C) t; n7 A: G' M1 R" Q3 Z! P
bmp.bmBitsPixel,, B; ^' `3 j9 m! y' P" Z7 f
NULL);
. H, F3 W1 o. S' g F) e: X6 i' e5 o0 A9 u
SelectObject(hMemDC1, IconInfo32x32.hbmMask);
4 r* P& _- I* Z6 ?1 a, X) c5 ?0 V4 n SelectObject(hMemDC2, IconInfo16x16.hbmMask);
1 ?! Z- o0 F" {; F
! u2 h+ z5 W X8 v' t% R StretchBlt(hMemDC2,
Q" \+ P" C/ B: L/ w% N 0, 0,
7 A3 Y' B/ O; L. {+ j, L) l: j) k 16, 16,6 R" R b2 c! O: w! d0 J4 p
hMemDC1,( l& |# a2 u; A* A
0, 0,
2 q5 E7 Y& M4 t, q1 D 32, 32,. ]4 S* C; P; p+ G- j
SRCCOPY, a! f9 {/ p/ P- P% {
);; t* u) m: O; g0 }. L4 I
$ h/ p5 U* b; ~6 H SelectObject(hMemDC1, hOldBmp1);
- C: a* G; U7 P6 i6 B2 k SelectObject(hMemDC2, hOldBmp2);. V. h% q, \" u$ ~
- k2 B) j% C: o) x9 L- d" | N
IconInfo16x16.fIcon = TRUE;
) v8 q) G+ @5 z& e( | h16x16Icon = CreateIconIndirect(&IconInfo16x16);
# s' m% F( \- x3 Z DeleteObject(IconInfo32x32.hbmColor);
7 x* b7 f9 Q# b: G: D* G+ c DeleteObject(IconInfo16x16.hbmColor);% o5 A5 j/ A% f, }$ @( N
DeleteObject(IconInfo32x32.hbmMask);2 \4 y; \3 w5 w( [+ U. V6 @
DeleteObject(IconInfo16x16.hbmMask);6 ~; {8 h) M) i4 |8 U9 x1 K0 \9 M5 C6 \
DeleteDC(hMemDC1);0 f+ E# a) T) l) _
DeleteDC(hMemDC2);* W. c9 Z% f3 e: [9 p( Q6 m& G
5 L4 P; _* e. l, Q! \ ::ReleaseDC(m_hWnd, hMainDC);
2 G; @$ f& F5 v$ N6 d return h16x16Icon;1 W# x6 J* V4 @' S3 m# I6 {
}
4 s. V& E$ \8 h9 b( j5 |) {: Q* E, N) Z" ^) j
! T8 M$ K+ H8 z( {4 F7 j; @0 w
15. 如何建立一个灰度级图标
; }( l, {) Y9 [ @
4 U0 s; r# S1 AHICON CreateGrayscaleIcon(HICON hIcon)
$ j+ i( D' f. x$ P: {+ T4 P{
2 R8 C. \5 Y+ F, r$ Y HICON hGrayIcon = NULL;
t- M0 q6 R: N+ A6 n! a HDC hMainDC = NULL, , {! M1 k; ~# d; O& M1 e( U' b! x9 R; l
hMemDC1 = NULL,
# D F8 b, N# H+ P, `% W. Y6 }- `) w0 i hMemDC2 = NULL;+ }/ u- \5 c* J4 e
BITMAP bmp;/ r* t: U; j5 n* m5 X, D
HBITMAP hOldBmp1 = NULL,
0 D& J* H& v; T# \ hOldBmp2 = NULL;
+ \% s; X1 N! {- u ICONINFO csII, csGrayII;
; }* g$ m3 t5 F; o0 q+ J BOOL bRetValue = FALSE;
' L# p! U) t3 Z. v. ]+ r" f) j9 C$ U0 W; C
bRetValue = ::GetIconInfo(hIcon, &csII);
6 X! R0 a) c; w% U! F0 ?- m5 b% m0 A$ r, I
if (bRetValue == FALSE) return NULL;& ?9 F% M8 B8 c3 P# I/ z
+ Q$ m6 @ m; {- W* F$ q( E! ?
hMainDC = ::GetDC(m_hWnd);
( B) G; B* l, ^9 ~; S7 w+ e0 ^6 u hMemDC1 = ::CreateCompatibleDC(hMainDC);! b! n, B3 C6 l4 k# Z, h
hMemDC2 = ::CreateCompatibleDC(hMainDC);+ E1 S/ U4 M' N, T! g
if (hMainDC == NULL ||
$ P3 v9 ^1 i: p; U+ Z$ p N5 B& f hMemDC1 == NULL ||
4 Q C/ M) r+ O hMemDC2 == NULL)
1 v3 }' M' D( y( e" W return NULL;+ }9 G4 [& Y% l) N& C2 u
9 u N" d" Y9 M. v$ T7 D9 o- J/ z
if (::GetObject(csII.hbmColor,
; P- H$ V) l' X4 [7 \# ], O sizeof(BITMAP), &
2 {+ J7 l* S5 A amp;bmp))
4 Q- }: _1 G9 R' Y. E, n {
0 t+ I9 @( e R0 y( N4 G csGrayII.hbmColor = % i& s! v x% I* Q
::CreateBitmap(csII.xHotspot*2,' N& Z7 f5 U2 I6 \8 P% j
csII.yHotspot*2, # a4 ~* Z3 m- U9 A, a9 l
bmp.bmPlanes, # e/ `+ D" M1 Y! F+ w- q
bmp.bmBitsPixel,
& i$ v) X6 P5 y5 I2 ^- I$ k NULL);
) d7 P: f' i' w if (csGrayII.hbmColor)8 s+ c2 o! W3 { }3 S# T9 C
{1 O2 u" x) Q2 V2 g: i
hOldBmp1 =# H: t6 L) T2 b9 v" y8 j# I
(HBITMAP)::SelectObject(hMemDC1,
4 K- g( a: a y) x6 [ csII.hbmColor);
! M; n6 e1 l1 A0 S- m hOldBmp2 =
( R/ O! v% N p2 o" f. S (HBITMAP)::SelectObject(hMemDC2,
: ^4 ^; t9 C i8 q$ I# ] csGrayII.hbmColor);1 D- X3 c i6 A2 b9 G- Z
4 s. F, I. h, d2 d0 v) i
::BitBlt(hMemDC2, 0, 0, csII.xHotspot*2,' Q6 |4 E$ T6 D% c, W* q! \+ w
csII.yHotspot*2, hMemDC1, 0, 0,) |# C; |7 e# r, M
SRCCOPY);
; e8 A* v6 W5 G! b& j3 E/ Q2 c g9 g4 H
DWORD dwLoopY = 0, dwLoopX = 0;- a+ D0 }4 n* m" @6 [0 s
COLORREF crPixel = 0;( a! A) o N+ K. F5 G
BYTE byNewPixel = 0;( S% c$ ?4 { S) e* [ A
for (dwLoopY = 0; dwLoopY < csII.yHotspot*2; dwLoopY++)% k3 A D, p5 j
{
( v5 F" L o# n' F: z- k! l: D' i4 R for (dwLoopX = 0; dwLoopX < csII.xHotspot*2; dwLoopX++). A3 G" _2 t7 {# p2 L
{) W6 o5 J$ c2 P' u- `
crPixel = ::GetPixel(hMemDC2, dwLoopX, dwLoopY);
; u! h5 K* W4 J* E5 V& ?5 J3 T byNewPixel = (BYTE)((GetRValue(crPixel) * 0.299) +
$ N! O% x# r( c4 u# K, e9 P P5 F (GetGValue(crPixel) * 0.587) +2 _$ Z. F/ [2 S$ ^+ ?6 R, J* r/ Y
(GetBValue(crPixel) * 0.114));$ M: d/ G5 r5 @* t) S
if (crPixel) ::SetPixel(hMemDC2,- J6 x- s: X# ^( K, o
dwLoopX,
! y& k; m) W1 z$ J( L8 l( m dwLoopY,
8 R6 s1 B$ @) G$ f! X" i; C( C RGB(byNewPixel,
7 b* E, W1 K! m9 z0 U9 i byNewPixel,0 u) J9 Y' ?' E* M
byNewPixel));. P, }6 n+ V# Q7 S: l1 E8 s
} // for6 e% Y' L" M% d# O, T8 H% A2 n
} // for) U; I; Y! t* Y+ {
::SelectObject(hMemDC1, hOldBmp1);9 h) }4 f8 Y/ C/ m
::SelectObject(hMemDC2, hOldBmp2);# {- ~! W3 z3 U5 M% S9 Z7 m" j
" H+ W! H& W F; `4 t csGrayII.hbmMask = csII.hbmMask;
+ M" h* b; [. z' K- z; Y6 E3 C csGrayII.fIcon = TRUE;1 ~7 M; m. O8 C- _! M5 n
hGrayIcon = ::CreateIconIndirect(&csGrayII);, _7 I' h0 d# h* B, i
} // if4 \# T0 m- W1 }% R1 e8 d3 Z% W
: eleteObject(csGrayII.hbmColor);
2 S7 [7 M5 x; _* x( a //: eleteObject(csGrayII.hbmMask);# L( t T; P. o$ i4 V4 J
} // if
( a6 N4 V1 m$ s+ b5 `; f0 @% _# X( D : eleteObject(csII.hbmColor);9 J1 K. r! Q$ [! W9 Q* C; }
::DeleteObject(csII.hbmMask);
( F, n; G( Z c( @ G) j3 ^ ::DeleteDC(hMemDC1);( r4 K p# f: G7 {! y
::DeleteDC(hMemDC2);4 X" l t5 m/ A `: m5 V( w; Q
::ReleaseDC(m_hWnd, hMainDC);
% J" }4 }) W7 {
- C& J) n. R9 h1 g. t0 e9 B x return hGrayIcon;
3 k* D q% ?! l" V$ u' D( o7 w, ^}
2 j: w- |, S1 F3 r) h9 N- F3 ?' u1 C6 n4 `/ y# V( ]; B& d$ M, ]* ]
6 r; t' j9 H0 b$ l! D
16. 如何按指定角度旋转显示内存位图(用法和BitBlt类似)
, ?* C0 J: Z' L! a. K
- W; d0 N/ W8 r5 M( {( j4 G* \* m& wvoid RotBlt(HDC destDC, int srcx1, int srcy1, int srcx2, int srcy2,
0 L3 ~" y @6 D, _ r$ h! q4 s0 O ]; g- m
HDC srcDC , int destx1, int desty1 ,int thetaInDegrees ,DWORD mode)
0 I d0 G/ ]( K7 k, E6 e{
& ` C; _% J: [7 s& y c2 Q9 x, a# C double theta = thetaInDegrees * (3.14159/180);7 w. v* M! Z5 m; j4 S. a; f, |3 D
$ T: r0 v! ^* A3 `) e) L, d
//原图像原始大小/ _. _2 y7 R8 W
( W9 U& s; ?) p: c" s- [; i# N int width = srcx2 - srcx1;1 O1 ]* e) \5 u( F! z- r0 R/ ?
int height = srcy2 - srcy1; r& O; Q( N0 T: j" o
w4 |5 ]9 i/ k" g" a' T, q
+ m& r% Z! R. J2 F: `5 K //原图像中心点
( L! Z3 C" H. t9 c8 n$ j int centreX = int(float(srcx2 + srcx1)/2);% C, d2 a( |# d) ?5 ^
int centreY = int(float(srcy2 + srcy1)/2);
0 Y0 j7 l; @' H6 p1 b; j
: ]9 ~4 [7 B$ _$ N6 b" @6 y: S //判断出图像可以沿任意方向旋转的矩形框9 l* S) N. Y; a2 e7 F, N/ w+ L
if(width>height)height = width;. d4 t5 Q. I6 m6 l. s
else
* K* [* _% U7 w' Q% h4 y+ y9 o width = height;
; u b2 {9 N- Y+ R9 q+ O% R: f1 g2 M' L, I
HDC memDC = CreateCompatibleDC(destDC);
" z& k- f! J. ]# V# [ HBITMAP memBmp = CreateCompatibleBitmap(destDC, width, height);
7 _1 H2 m3 L! y( |" v5 ~
: q/ ^' x$ l& m. @/ q' j HBITMAP obmp = (HBITMAP) SelectObject(memDC, memBmp);0 }0 t. w; J9 Y6 c
1 `) R; Z- }4 x$ _) d
5 u! r5 Q3 U) Q! `+ g h' U //内存DC新在中心点/ i, d! I2 l$ ?* k$ R$ @
% Y" V4 x5 x8 W; s5 J/ R. e
int newCentre = int(float(width)/2);
. W5 m# q! b# S& O4 [. h/ O4 A& r //开始旋转
S. \- F: M( P! y. ~ for(int x = srcx1; x<=srcx2; x++)
2 P6 {- z) I+ Q! E# \8 u. k7 U for(int y = srcy1; y<=srcy2; y++)/ t2 }. d, f' `) T
{6 V' ~1 E, o: Z4 m! e
COLORREF col = GetPixel(srcDC,x,y);
$ p! Y3 O( s, H int newX = int((x-centreX)*sin(theta)+(y-centreY)*cos(theta));" R$ Q2 k; m: Q: R
int newY = int((x-centreX)*cos(theta)-(y-centreY)*sin(theta));5 b; x1 i) `, G& |' W9 G8 o2 a- s
SetPixel(memDC , newX + newCentre, newY + newCentre, col);
+ }; y) d8 a" G, \* z# c$ q }( K; o5 E0 o3 F' l% [7 x
# Q$ d* L: g. s" l //复制到目标DC上. g1 g5 \+ }$ t
BitBlt(destDC, destx1, desty1, width, height, memDC, 0,0,mode);
% h& Y0 p8 ~, R4 K3 [2 O //释放内存8 W3 S2 w, c' J2 |7 M" |7 r8 r9 c5 m
SelectObject(memDC, obmp);
. z! z, B1 }5 `* z9 N; ? L" \& A DeleteDC(memDC);7 i% C7 s, O" I v Q
DeleteObject(memBmp);
" q4 _: |) ^$ a3 V}4 |1 r( j5 o5 y) P
) p$ j7 ?" Y. K5 m& j/ T
* [" [5 I" S" ~" E. S0 _( Z用法:
3 H' q; u; u8 ?" S: R: W9 ?5 V
" q1 g( e( }3 JRotBlt(dc, 0,0,150,150,memDC,200,0, 45, SRCCOPY);/ x$ s2 I$ {) m: M
% ?; ^. u) j% i' q7 u$ n
6 o" N J2 V) }/ M( e6 Z1 F17. 如何将指定的窗体,以位图形式复制到系统剪切板上
% r V/ ]% S: Q9 W; P' s# d% A5 g* `3 C% C
void CScreenSnapDlg::toClipboard_Bio(CWnd * wnd, BOOL FullWnd)
% o6 ~' c9 e, s% @8 l{: T0 u! a" M' M- Z u& T8 X
CDC *dc;
- T1 ]) e( Q) T$ H. N" d. y ` if(FullWnd)
0 ^! F' M$ d! W1 S2 e0 t+ F { /* 抓取整个窗口 */
1 @. e# |; c0 t+ D dc = new CWindowDC(wnd);
0 W6 ^ o9 A) H& u8 M } /* 抓取整个窗口 */
% l5 k6 I% q- T' D: E2 T/ h else7 \1 ~- D/ g3 I: d0 X! V9 _( P
{ /* 仅抓取客户区时 */
: r: P* g* C( W/ v b dc = new CClientDC(wnd);8 t) W; ` T: v% ?5 {! J5 g
} /* 仅抓取客户区时 */0 c5 E4 o' \! M- E+ R- f& `
$ j, k \4 Y9 d K( | CDC memDC;
# }5 C# o5 N- O memDC.CreateCompatibleDC(dc);8 g# c0 e5 v, n+ x" q0 [ H. O
) S2 i* x# ~. ^ CBitmap bm;
: z- q8 u* ^% I4 \1 `2 ^& O8 d8 y CRect r;& L m4 U7 U' @: n& G: [. N$ O
if(FullWnd), i; B: X `% e' c! C$ G$ f
wnd->GetWindowRect(&r);& m+ P: q6 Z! A/ J* D" u1 L) w
else) R9 x" [0 K! `5 o7 N- P
wnd->GetClientRect(&r);
" s* {5 S8 B- k9 h: C; `
8 v8 z4 x0 w( W. ^3 D$ K CString s;* l& U8 A: |: f: S
wnd->GetWindowText(s);! G* d$ H6 L' _& I& T
CSize sz(r.Width(), r.Height());: _ ]& F/ d$ j* Y
' W r' r/ S3 J: h$ G) o
bm.CreateCompatibleBitmap(dc, sz.cx, sz.cy);
' M4 X$ P! M0 a- b( }& E! F CBitmap * oldbm = memDC.SelectObject(&bm);
2 U( t0 D) y" q memDC.BitBlt(0, 0, sz.cx, sz.cy, dc, 0, 0, SRCCOPY);
6 s1 }' v+ D! k! [9 z! X
4 Z1 Q: L3 [+ w; z2 k% t1 i, \ //直接调用OpenClipboard(),而不用wnd->GetParent()->OpenClipboard();
( Z. X* w' @7 e3 a5 p+ F wnd->OpenClipboard();
% g6 L: ~" T9 M G- J) Q' U# D/ [ ::EmptyClipboard();
' @7 w1 T( e6 w1 I ::SetClipboardData(CF_BITMAP, bm.m_hObject);
: W6 r8 }6 ?/ ^1 z) `/ ~5 j% X `; b CloseClipboard();
K9 g1 {1 I k4 @3 f8 X, m: @5 t+ p8 z% I2 p# j1 R
//恢复原始环境
" v' i( J! ~! `6 c& F memDC.SelectObject(oldbm);
5 N1 ~( s5 d& y3 w& k2 e3 p8 U4 V bm.Detach(); # F: i1 K8 d- w- Y
delete dc;- ~% |/ `8 {2 s8 z4 E
}
4 S O$ V0 c' N) B
6 K& k/ a- Y) k% G( }8 @; g- Y! Z I% a3 ^" @/ D1 U0 I8 Q
18. 如何替换HBITMAP中的颜色值
0 m. _& x7 w: ~7 u5 {/ P7 x5 ~
$ c+ k _; {# z7 u) k#define COLORREF2RGB(Color) (Color & 0xff00) | ((Color >> 16) & 0xff) \
* K' ]$ G* ~9 F5 O | ((Color << 16) & 0xff0000)
% R, a* h/ e. l! _3 Z) | |; g6 S; T7 d: h! E; R
HBITMAP ReplaceColor (HBITMAP hBmp,COLORREF cOldColor,COLORREF cNewColor); w* J3 ~; _! I v: k+ m/ m1 f
{9 J, H k0 h9 k0 J/ K1 Y
HBITMAP RetBmp=NULL;; K$ q' O- y, ~4 \! l" ^" \; Y$ t
if (hBmp)
) f: Y8 ]1 u f8 T {
3 S) x. M3 p& f! U* ?9 _5 E" v HDC BufferDC=CreateCompatibleDC(NULL); // 源位图DC) W2 V9 u7 u+ G
if (BufferDC)1 q* g& G" b; ]
{
3 C. R3 o8 o- j7 N$ K9 O7 N SelectObject(BufferDC,hBmp); // 选入DC中
( L1 Z) n Y2 K HDC DirectDC=CreateCompatibleDC(NULL); // 目标DC
7 w- f' ]. g0 r1 @, F if (DirectDC)
7 M1 }' n% K0 Z3 W, ]6 K {
; j" v, y! F6 j2 o7 } // 获取源位图大小
5 ^9 D# Q9 z$ t! E0 A- W3 X BITMAP bm;* ~8 U2 R% a8 i
GetObject(hBmp, sizeof(bm), &bm);
# C1 ?# I6 }. H3 ^
6 f( q- h1 y: e9 y5 e* S // 初始化BITMAPINFO信息,以便使用CreateDIBSection
' P9 d U! @& {, K" ~ BITMAPINFO RGB32BitsBITMAPINFO;
. G6 C4 z! d0 J: R% L ZeroMemory(&RGB32BitsBITMAPINFO,sizeof(BITMAPINFO));
5 Q; V' @7 b( ?: w8 X# d7 G2 X RGB32BitsBITMAPINFO.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
0 E$ T( p3 r r5 K RGB32BitsBITMAPINFO.bmiHeader.biWidth=bm.bmWidth;4 J7 W4 K9 C& T5 Y
RGB32BitsBITMAPINFO.bmiHeader.biHeight=bm.bmHeight;
* ?3 r. q+ |! Y4 [5 U. Z RGB32BitsBITMAPINFO.bmiHeader.biPlanes=1;
7 Q9 I# K8 U, I# _; r RGB32BitsBITMAPINFO.bmiHeader.biBitCount=32;3 {6 j( t6 |5 H7 W) i) } A6 u
$ L) q+ B6 ]1 O+ p" a3 j8 V
UINT * ptPixels; ! X% g, G( R; _4 d! ] u7 R
HBITMAP DirectBitmap= CreateDIBSection(DirectDC,% x( z! p5 ]4 p, P" u- Q' d
(BITMAPINFO *)&RGB32BitsBITMAPINFO,
9 x5 T6 a) H4 j$ m; Z% ~( ? DIB_RGB_COLORS,(void **)&ptPixels, NULL, 0);
3 R) o) u7 F2 v if (DirectBitmap)0 w6 M* g& f4 V' U9 @3 ]$ d
{
, N0 {$ e1 O# Q0 t HGDIOBJ PreviousObject=SelectObject(DirectDC, DirectBitmap);; E" _" \% |- R" L& i
BitBlt(DirectDC,0,0,bm.bmWidth,bm.bmHeight,BufferDC,0,0,SRCCOPY);5 [9 o* e$ ^& F& @; ~- W1 w0 y
! C9 M! J/ K4 ]" ^
// 转换 COLORREF 为 RGB
2 z8 a' b! M# J: S cOldColor=COLORREF2RGB(cOldColor);
6 d4 X% H4 k" w6 }- v cNewColor=COLORREF2RGB(cNewColor);0 D* ^( u, U! ~; [& A5 z
// 替换颜色) v5 V4 \; _$ B- H
for (int i=((bm.bmWidth*bm.bmHeight)-1);i>=0;i--)
. O/ v; g. y2 d+ U {
1 T& S7 i3 ^6 ~# g) T7 J if (ptPixels==cOldColor) ptPixels=cNewColor;
k6 ~# E2 w1 t; x9 d n* | }$ I% U6 n8 O5 g! I$ n& ?
8 Q% w& t6 H) `& m Z- R, I5 N
// 修改位图 DirectBitmap8 L. {0 y( [8 R6 |8 c( ]: G
SelectObject(DirectDC,PreviousObject);" o) g' b& f/ h. f8 r. e8 T, c
; L0 s- Z7 @0 m% Z+ S O
// 完成
! |! L* o) ?) C RetBmp=DirectBitmap;
0 O& ~: T/ O+ ]- d6 e B }
# ?- J6 F+ T' C" B6 h% C9 j6 K // 释放DC
/ M% \& {4 G; C DeleteDC(DirectDC);
/ d1 c' {$ I6 v9 I" h |2 l7 I }! ~* v2 O* ?1 }' L$ U Q5 r
// 释放DC
1 z* W% s) m9 r* `. F DeleteDC(BufferDC);
" t9 f0 T2 U6 O2 N }
' x0 s: J7 a4 K6 n: X }; P2 b& n$ j( n$ e
return RetBmp;4 S/ i% u/ l! h6 [4 ~8 d! U
}' y8 j# K d: p
# J A: P0 c. a) w" O
! A) N7 W! B" V6 ~) |1 ` M( ^
用法:
# w. m% ?1 L7 q- B7 h
7 ?3 Q1 }2 y2 A: v2 i% `' ^HBITMAP hBmp2 = LoadBitmap(g_hinstance,MAKEINTRESOURCE(IDB_SAMPLEBITMAP));, b9 u8 H2 L/ `8 X5 F" o
HBITMAP hBmp = ReplaceColor(hBmp2,0xff0000,0x00ff00); // 替换蓝色为绿色0 g3 |5 E. k6 {& B$ Z% C
......
, \6 B9 c! `( j$ m/ m8 d' F! J; ]! A8 w1 V
DeleteObject(hBmp2);' S) u1 y- b* n/ R1 E: ~0 j9 B
DeleteObject(hBmp);- J6 \4 a! d) T3 G5 H/ A+ R
& f7 s! U, H; {4 Y
, `( o+ c, c& a1 g! {19. 如何转换并保存位图
W& b7 S( g/ o# {, K3 X9 _6 x: |5 X# n; S0 I) n5 p2 c0 C
//********************************************************************************
; C/ y% H: N( n" H8 t: R# Y! W//* 名称:DDBToDIB
; @* \! `1 Z9 Z6 ]//* 作者:徐景周(jingzhou_xu@163.net)
& W, M* L% U4 K f) c+ x4 w//* 功能:设备相关转换为设备无关位图, s' } v0 k9 S- O! g+ z( _
//********************************************************************************
$ J2 w; ]. n' @# Y, i1 ~
6 O7 n& C! k! Q3 k) B7 ?HANDLE CScreenSnapDlg::DDBToDIB( CBitmap& bitmap, DWORD dwCompression /* = BI_RGB */) + R* x9 ~8 ~; i
{
+ P1 E- K9 M6 H$ h BITMAP bm;) S" t' M" j% g- j6 K0 N
BITMAPINFOHEADER bi;
" c9 ]2 B' W2 ^. j1 `# @: |* m LPBITMAPINFOHEADER lpbi;
( S/ S! b% ]; ~8 S) ~5 Q6 i4 [4 Q DWORD dwLen;+ K* G* c0 B& s
HANDLE hDIB;2 I$ h1 L/ y8 u2 I% l* A
HANDLE handle;
, Y4 C( i0 F$ |/ B- h' e/ K HDC hDC;
. G0 P* I* H# W4 Z$ j/ } HPALETTE hPal;5 Y: k5 F8 j( Q0 Y* `
2 F, d w: b' G' v/ a8 M; P! A! A
CWindowDC dc( this );
$ o1 p2 n# e; b5 C- v CPalette pal;
; c6 X! Z5 ~. @0 [# t; p) f' O //如果支持调色板的话,则建立它
) ~4 ~: R( |/ [" { if( dc.GetDeviceCaps( RASTERCAPS ) & RC_PALETTE )
" X0 I3 H8 Q* a; ` {
: j* e5 V% A/ V/ K2 O UINT nSize = sizeof(LOGPALETTE) + ( sizeof(PALETTEENTRY) * 256 );
# D+ _3 t; C9 V LOGPALETTE* pLP = (LOGPALETTE*)new BYTE[nSize];
/ V5 H% M# n, a. `% D2 i8 Y pLP->palVersion = 0x300;
4 r8 {. ^3 i/ k) P4 `0 k pLP->palNumEntries = (unsigned short)GetSystemPaletteEntries( dc, 0, 255,
! ]/ r1 C7 ]8 j& e; o0 P0 y pLP->palPalEntry );
6 f i* H2 K+ J# Q, P+ b- ]" \
c5 a" @: J; |6 j) b0 d) L' D pal.CreatePalette( pLP );
1 S& D" E+ b- |
5 u4 G+ k9 ]" {) f5 z% `2 l //释放! Q# _ C; \8 a9 R; G
delete[] pLP;8 f2 u: _4 k, N1 W$ I: ^) ]
}6 \5 E3 o; g0 o1 W# Y7 w$ J
% c% b; n! ^% a+ ]+ t ASSERT( bitmap.GetSafeHandle() );
- U, v0 M8 w4 V! r( u7 k D6 n
/ [& c8 |) a# G) J7 l6 S5 c6 Y# @, s2 @- U O, L: M
//不支持BI_BITFIELDS类型
7 x& |3 k. P4 O* @0 o7 f if( dwCompression == BI_BITFIELDS )
/ X5 \; C O0 G: \. d9 T0 x. j return NULL;3 _+ P! y9 {. w0 G! I/ B- n
6 J6 c: O* R) S
//如果调色板为空,则用默认调色板' t+ ~, ^$ [- N/ d2 \) x1 w8 {
hPal = (HPALETTE) pal.GetSafeHandle();: j7 g; Y E: D
if (hPal==NULL)
: t5 T$ P4 S. j+ ]+ H9 {0 ] hPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE);4 d3 d6 a+ y( l" B
1 j# q2 O4 \# ~0 O% V4 c+ ]% _0 G //获取位图信息
1 _" F% [/ y( A# T( m, | bitmap.GetObject(sizeof(bm),(LPSTR)&bm);; U, f3 V4 L$ |; x
3 r6 p) S; k, Y* K. |1 A0 V* b0 g
//初始化位图信息头4 t8 Y! m2 [9 e! a0 Q, [
bi.biSize = sizeof(BITMAPINFOHEADER);* d/ O% Y$ \1 V, u" z
bi.biWidth = bm.bmWidth;
6 j5 C( G- r1 d( i7 ^9 Y bi.biHeight = bm.bmHeight;5 x% L: r q- \9 h# j+ B1 D" m
bi.biPlanes = 1;. I! ]. E* H3 b- B! e2 S2 c3 o
bi.biBitCount = (unsigned short)(bm.bmPlanes * bm.bmBitsPixel) ;
1 z6 O/ D9 @2 ]- j bi.biCompression = dwCompression;3 z( a* B! I, L7 a+ Y5 [( t9 `
bi.biSizeImage = 0;) y/ Z. z# ^+ u# }$ B4 \. \+ T
bi.biXPelsPerMeter = 0;/ W& p5 \1 o) }
bi.biYPelsPerMeter = 0;3 l4 z! {6 G) ]1 l- ?" E% h, {
bi.biClrUsed = 0;. G8 {- f# P' s0 q# _
bi.biClrImportant = 0;& D Z# j7 u7 J' K8 t7 J" @9 m
; r% {1 Z3 y O' T, p: D+ }6 c //计算信息头及颜色表大小
# z7 W- H# T* H- M m% m int nColors = 0;8 u7 u' w0 b# S2 x
if(bi.biBitCount <= 8), x1 P* h) K5 X. Z0 G% a$ C
{
1 m7 \7 _' V& y, {. x' b" o. ? nColors = (1 << bi.biBitCount);
6 E- l0 w* C/ d3 A }
2 T' a3 u% G' x; X' U" X: x dwLen = bi.biSize + nColors * sizeof(RGBQUAD);
; b$ R; B( f$ n1 J% t( e( G6 X' b4 M1 W( w3 T9 i% M$ r
hDC = ::GetDC(NULL);
1 S1 ]; ?& v: n3 F hPal = SelectPalette(hDC,hPal,FALSE);3 t7 C" L. @& j5 V7 f
RealizePalette(hDC);5 @0 q9 V+ r1 i6 b3 K
9 z4 ^; L5 i/ L, g5 N, w //为信息头及颜色表分配内存8 c% l( D c* h& g2 s8 Q
hDIB = GlobalAlloc(GMEM_FIXED,dwLen);" b7 D/ H; I7 L
if (!hDIB){
! ]* |, w4 S: T* c( I SelectPalette(hDC,hPal,FALSE);6 _( X' D0 s) X% o
::ReleaseDC(NULL,hDC);
/ k9 k# s8 w+ E return NULL;/ L' O- q' G6 x0 i8 g4 g
}1 w i$ e4 f7 X6 z
6 J/ ]3 g% \9 Q7 `4 o/ q* F1 O
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDIB);
# [$ j3 C2 L. m8 q- b3 e+ } *lpbi = bi;& o- Y# T; k* f% m _
7 N( G& @8 f# E! a- G: w, l
//调用 GetDIBits 计算图像大小* ]. L8 T5 [% `( s8 b; s
GetDIBits(hDC, (HBITMAP)bitmap.GetSafeHandle(), 0L, (DWORD)bi.biHeight,# B2 F/ G4 u: P5 j. i3 a
(LPBYTE)NULL, (LPBITMAPINFO)lpbi, (DWORD)DIB_RGB_COLORS);* Y* i: y$ ?5 z2 z/ X2 X8 k: [
' b/ g# x1 N% ~) E, b* W
bi = *lpbi;
) u ?( b5 P, v# h) B$ Y
# A5 ~+ W3 _# W8 ~ //图像的每一行都对齐(32bit)边界+ V$ Z+ V, L3 ^. G( w
if (bi.biSizeImage == 0){
, B+ t# @' [0 X0 `" h! n bi.biSizeImage = ((((bi.biWidth * bi.biBitCount) + 31) & ~31) / 8) / m! y: K, e2 A6 j1 n; e2 G
* bi.biHeight;2 E$ G: t; k: F( q/ h7 e& N
if (dwCompression != BI_RGB)
* ^+ D$ t' z# {7 S; P) e. O4 y% v# S bi.biSizeImage = (bi.biSizeImage * 3) / 2;2 C+ ~/ c5 F& U5 A: E
}! n9 d5 \% ^/ D- i5 S5 _
//重新分配内存大小,以便放下所有数据% h% ]$ {( {2 f* v0 K9 n
dwLen += bi.biSizeImage;! g3 k2 S5 J/ F R
handle = GlobalReAlloc(hDIB, dwLen, GMEM_MOVEABLE) ;
( E/ |0 w" V' T% |6 n1 Q if (handle != NULL)' l2 D5 j, a* h2 n2 W
hDIB = handle;
: }" W) ?3 W; c+ o' M/ }/ G else( w$ y. r. r9 z: c
{0 H( t1 ^ a5 N6 k Y
GlobalFree(hDIB);9 P5 a2 \3 C! m1 I& r$ g5 X
' A, x V" W" y3 W+ d e) n7 x //重选原始调色板% `0 F6 \/ l) o
SelectPalette(hDC,hPal,FALSE);
% I' R0 T$ c9 n ::ReleaseDC(NULL,hDC);6 t6 A0 }7 C9 \) u% {
return NULL;
k! W2 @+ L1 n5 S$ R }
- L) P% A3 S1 F //获取位图数据
$ L1 q) J6 g5 d3 `, J- I4 p lpbi = (LPBITMAPINFOHEADER)hDIB;3 i+ P0 P, l+ J! c
//最终获得的DIB+ {3 ~: R; |2 _7 D2 ^( h4 R3 a
BOOL bGotBits = GetDIBits( hDC, (HBITMAP)bitmap.GetSafeHandle(),
4 X* O3 u$ H3 b+ q 0L, //扫描行起始处
- ^8 P' n9 \- q; K" n$ g6 } (DWORD)bi.biHeight, //扫描行数0 v V; q' r& J& {
(LPBYTE)lpbi //位图数据地址* ^* n$ l* \, q7 H
+ (bi.biSize + nColors * sizeof(RGBQUAD)),5 Q! D: ~5 O# v- q% C
(LPBITMAPINFO)lpbi, //位图信息地址
; P8 b+ ^: w4 J4 }& E! } ?7 l7 |: a (DWORD)DIB_RGB_COLORS); //颜色板使用RGB. a2 t! z5 `; ^+ v
if( !bGotBits )- U- e4 z" S# Y. [9 y: f6 K
{
1 O' w+ Q) y1 q. e- z GlobalFree(hDIB);5 ~% e6 Z, }6 z/ I1 L( s/ B' L
SelectPalette(hDC,hPal,FALSE);: s& v! }9 Y. F( K+ o6 A; w
::ReleaseDC(NULL,hDC);
8 M5 N7 B! A" g% O& f( s return NULL;
1 }" w: y3 x1 g3 U$ b E }: q U+ |2 y" m* s2 J- z
SelectPalette(hDC,hPal,FALSE);
- o. c* w1 v/ j) ] ::ReleaseDC(NULL,hDC);
3 {: K' ?, M* X, {* i* V1 X return hDIB;
: U+ `5 J; j0 l; \! V! Q}
# A/ K. S) h: O, i5 P# V: M( _& L0 l& T6 Y0 u% |9 A( W L
6 A8 F9 b5 H3 Y- U//********************************************************************************
/ M S, Y) L9 X {+ \0 M4 H8 v//* 名称:SaveBitmapToFile: n+ g2 W$ E, e5 k+ [7 i# D, L7 s
//* 修改:徐景周(jingzhou_xu@163.net)/ Y" {5 A- ?0 L: s$ O9 Z3 }
//* 功能:保存为位图文件, q3 p. e5 n' a; E
//********************************************************************************0 I2 W. s/ z9 C2 D
BOOL CScreenSnapDlg::SaveBitmapToFile(HBITMAP hBitmap , CString lpFileName)
; B% _' F G Z- k7 r _ K{# g' g3 T0 i8 Q) W3 g4 a1 k p
HDC hDC; //设备描述表
@3 L- m$ Q+ x; m3 W int iBits; //当前显示分辨率下每个像素所占字节数+ `8 b0 [8 L( @) Y# D0 U0 x
WORD wBitCount; //位图中每个像素所占字节数
9 `, z, J A9 g& c DWORD dwPaletteSize=0, //定义调色板大小, 位图中像素字节大小 ,位图文件大小 , 写入文件字节数' Q1 [& p0 j. r: w# f" y
dwBmBitsSize,0 i, G7 _7 I5 I& @) g. I
dwDIBSize, dwWritten;
9 X0 L, g; U2 w/ { BITMAP Bitmap; & ^ s7 r- h3 ~1 n6 [" x* Y
BITMAPFILEHEADER bmfHdr; //位图属性结构 ; C4 V3 y( d$ H0 i7 t
BITMAPINFOHEADER bi; //位图文件头结构 ; s8 B0 {! p3 }/ T& W/ P
LPBITMAPINFOHEADER lpbi; //位图信息头结构 6 [% _2 E- S5 m4 k" J- B$ A% V
" Y7 ?5 W% O' j! B L7 N
HANDLE fh, hDib, hPal,hOldPal=NULL; //指向位图信息头结构,定义文件,分配内存句柄,调色板句柄
; z: {; V- P1 B
" t5 `) Y' V7 |1 T# U% {9 \) F3 b8 K3 Y
" F4 P Z( n" `4 M //计算位图文件每个像素所占字节数" ?1 ?! I- _# l; v% d- n9 H4 P
hDC = CreateDC("DISPLAY",NULL,NULL,NULL);% v0 `5 M Y p3 P4 Q/ e+ B
iBits = GetDeviceCaps(hDC, BITSPIXEL) *
( j( _0 a# ~# N. u( E4 j7 ? GetDeviceCaps(hDC, PLANES);
( F0 `/ R1 T( N6 Y DeleteDC(hDC);
q2 b( P# C0 g6 _8 X4 `3 l3 o( g* q if (iBits <= 1)7 \: J: A7 t% b4 T+ O' R& Z- y
wBitCount = 1;( V) L9 `7 S( Z" j7 q& e( ^2 V
else if (iBits <= 4)
; }) J" f6 q7 p" e; b% s6 ]# D wBitCount = 4;" K, q% K F3 a( P
else if (iBits <= 8)
; g7 [+ h) m. A; T) \+ I; N wBitCount = 8; N$ P9 M6 w$ ^2 N
else if (iBits <= 24): w0 A6 x1 ]. E0 ~) p
wBitCount = 24;: H+ f: R" t$ i/ T- |
$ T: u. i4 K: j5 g8 n1 z //计算调色板大小( x2 t1 F- z# { R \
if (wBitCount <= 8)
' d- y f9 }# C2 {( F, ~ dwPaletteSize = (1 << wBitCount) *sizeof(RGBQUAD);% Z3 j6 W O+ g: a$ R7 O
5 f( m" l' G4 U! U3 b( Y6 n
//设置位图信息头结构3 L2 h! S( A/ I; \( b4 E+ [
GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&Bitmap);5 V: O9 r# P+ r
bi.biSize = sizeof(BITMAPINFOHEADER);
2 E9 q2 Y% p" q9 z) l bi.biWidth = Bitmap.bmWidth;
% ^" @/ P! a5 ]& U* `- z bi.biHeight = Bitmap.bmHeight;% ?+ O9 W% O( }0 A, w
bi.biPlanes = 1;
* C) i9 r8 Y, l2 y bi.biBitCount = wBitCount;' g2 Q" p$ Z; C0 M! @
bi.biCompression = BI_RGB;7 I2 c- K8 ~; V, d7 S
bi.biSizeImage = 0;
# G6 ?3 {6 {7 M' C& r bi.biXPelsPerMeter = 0;
$ d8 W! x2 M7 t/ Y& E8 S* X6 c1 o' [7 [ bi.biYPelsPerMeter = 0;& {3 u& `9 M8 E* X
bi.biClrUsed = 0;7 }6 E1 |" d, ?, W5 ~
bi.biClrImportant = 0;- J& |, i1 b9 n* c
dwBmBitsSize = ((Bitmap.bmWidth *! E- g9 ~' ^: p" r2 r0 i
wBitCount+31)/32)* 4
1 }* p# V' X7 t *Bitmap.bmHeight ;6 T# z8 U- y3 w" G' j
: R3 E$ S+ C8 v) b6 i/ e( T) \ //为位图内容分配内存+ b+ @. ]' Z% [" ^7 {1 q# V7 D
hDib = GlobalAlloc(GHND,dwBmBitsSize+- W8 `+ G# I& j% d. @$ ?
dwPaletteSize+sizeof(BITMAPINFOHEADER));
7 g5 `) a$ b) m! t7 ? lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
6 k* `7 D. ~. \" @7 u *lpbi = bi;
P7 t0 N! D, }$ G2 J
- X5 T" u( B4 f6 I$ e4 F/ q // 处理调色板
) a4 w' ?+ [: o7 @* j( s, c hPal = GetStockObject(DEFAULT_PALETTE);/ C9 M& r! L/ b Y" b
if (hPal)
/ X- H0 Q* E3 w6 X$ a( V+ Y, s {
9 s0 S4 [7 c7 C# `4 E5 L2 B7 a9 E hDC = ::GetDC(NULL);
0 \6 w7 g+ D8 q4 a: b3 ]! n& R8 ~( C hOldPal = SelectPalette(hDC, (HPALETTE)hPal, FALSE);6 Q J5 A7 J/ [$ f* F
RealizePalette(hDC);
2 u ~, a1 Y( r }. H* Z/ b% Z; N2 O# o% N' `
" N% s# u, v% r1 M; X, Y // 获取该调色板下新的像素值
5 n- ~3 o+ b) b2 R0 X- O ? GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight,
. w; n4 t1 b" O0 u ^+ d (LPSTR)lpbi + sizeof(BITMAPINFOHEADER)+dwPaletteSize,
6 ?9 ^( }; {2 |- ?2 L5 ~ (LPBITMAPINFO)lpbi, DIB_RGB_COLORS);0 F5 D7 ^! f) ^5 p
' f6 z7 j* D( H6 Z4 V //恢复调色板 & M5 ]! t& ?3 a, Y/ z
if (hOldPal)+ m+ s) D1 F; y0 r7 G i
{
; I; a0 V0 K. K- S( D SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
+ A8 R- P. Y8 w1 z6 i8 f; A RealizePalette(hDC);% z' ~3 r/ O+ T7 N3 x. E" K( x0 R
::ReleaseDC(NULL, hDC);
5 c8 Z: c/ {/ v+ W1 C0 m2 O7 Y8 w }$ [6 b$ U* w7 Q
- M) w* `4 w7 E9 A
//创建位图文件
+ C5 j( ^1 g5 ^3 c+ g8 ^$ ~6 b1 L fh = CreateFile(lpFileName, GENERIC_WRITE,
: B9 c1 ?: p" ^: O$ \ 0, NULL, CREATE_ALWAYS,
+ Z4 G' m7 H/ M FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);
, @* |: W7 D0 E% _8 f if (fh == INVALID_HANDLE_VALUE)1 V% A: r+ t2 H9 Y3 R
return FALSE;. {. Q- `8 k9 v5 ^/ o+ q i0 o
' O- o0 ]* b) K/ u* ]9 F7 f J
// 设置位图文件头
% ~" c5 C% L' L4 r' a. o" V) k bmfHdr.bfType = 0x4D42; // "BM"
1 B, u$ A5 k2 y0 U s0 u dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize; " k$ y& x7 i% ~2 d" g9 v k
bmfHdr.bfSize = dwDIBSize;( q! G5 ^2 ~; U6 I$ n
bmfHdr.bfReserved1 = 0;
, l/ m- o& P6 w bmfHdr.bfReserved2 = 0;
8 A7 i3 n* U' e2 L/ L7 }3 i bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) 8 \" z0 ]- b2 c5 @6 o- ]8 |
+ (DWORD)sizeof(BITMAPINFOHEADER). t% B) a T% v3 I
+ dwPaletteSize;: B# J# L: z6 U" e! |0 w" K
2 f8 H0 Q- p& K5 \+ X3 e& t8 A2 A" y% h0 y1 G5 T
// 写入位图文件头
7 j: G0 g8 i# D( J7 C$ C WriteFile(fh, (LPSTR)&bmfHdr, sizeof) ^' `& Z; l% T/ L. _
(BITMAPFILEHEADER), &dwWritten, NULL);0 J+ ^4 p! H" `6 C; K9 H: H
3 n. E9 R7 {" S4 A% @# `) ^8 m: o6 H
// 写入位图文件其余内容! c7 m3 C+ b+ g& ]; M
WriteFile(fh, (LPSTR)lpbi, dwDIBSize, 1 @! U/ R7 f2 ]" E
&dwWritten, NULL);2 }: \7 r6 R e1 U) o% M: P
+ N$ k; O' c, ~7 [+ C //消除内存分配
$ V2 b2 }7 g& M, e0 z( H# x GlobalUnlock(hDib);4 |: Z y. H4 p' i! f7 h d; u
GlobalFree(hDib);
- S5 H* |% B4 S9 y+ h CloseHandle(fh);
5 z) q2 f- V+ M" E1 O- o5 W. W# W9 V. w+ d
return TRUE;
" s! j; M, u9 O}* s H- G* s/ v6 C# ]
+ f6 d8 u$ M1 r% r% X* S: n
5 A4 \6 O+ N! R, q* C ?: I9 `% ?20. 如何获取局域网上计算机名及它们的IP地址
( m9 N! j+ [2 s# ^' ~1 a
0 k8 e1 }+ `2 ?+ u/ H1 S( v/ l( L9 Cl 连接ws2_32.lib和 mpr.lib库- U* a% f! L% Z q3 t' N
9 A J& M+ z6 H
l #include winsock2.h* ~/ V! {; x0 J4 g3 m
, V! _/ p& k/ k8 ~: }" Q
CString strTemp;9 Y# h9 t+ Y: A; M' U! Z3 {' ]+ F
struct hostent *host;
% ~+ ?) e8 e* e; ~ f# l5 r' y( v# S1 Q: W6 |- a
struct in_addr *ptr; // 检索IP地址 8 ` X R! d8 C: C
DWORD dwScope = RESOURCE_CONTEXT;
: O- g6 F- l- @( I% I* jNETRESOURCE *NetResource = NULL;$ b7 F$ v. ~: O$ ]6 M
HANDLE hEnum;% [ J6 z8 ^8 S" Z- g- ]* `
WNetOpenEnum( dwScope, NULL, NULL, ; T6 ?2 [! N ^5 S1 h- {; p
NULL, &hEnum );
. e9 K* X. B. Q& ?( `/ @7 P( @3 n4 T6 ~, Q( x, ]
WSADATA wsaData;
: e* T1 K3 ~; |, |* iWSAStartup(MAKEWORD(1,1),&wsaData);3 s$ [ d, k# d# ]3 m* i% n0 T
( e$ l, u5 b% W3 c! b0 h0 j' Cif ( hEnum )
# b' D/ X! ?5 X. X{
$ x: b- Z8 U. k DWORD Count = 0xFFFFFFFF; i' h9 r" t$ S& L+ r
DWORD BufferSize = 2048;
) [) n7 [0 y, V1 c: ^9 } LPVOID Buffer = new char[2048];' K# R3 d4 ]. X% e+ y4 ^( v
WNetEnumResource( hEnum, &Count, / S: _0 E* f, B% y" J
Buffer, &BufferSize );
; A$ O( z I6 |$ M4 h NetResource = (NETRESOURCE*)Buffer;
4 Q( v. N7 T& U8 m }5 F. Q+ F8 W" O6 T- c$ R7 m$ o1 {
char szHostName[200];
9 ]) E4 l* `0 y8 n/ Z! P% E7 q$ K unsigned int i;/ y/ }/ E. \; o- `) w( d; f) D2 F; f
+ r+ a: f' I* y) ^9 c- \; }
for ( i = 0;
. _0 V5 H: d5 g& w i < BufferSize/sizeof(NETRESOURCE);
9 B- Z' U8 \# y- C i++, NetResource++ ), _) `6 i- M a7 J6 r! i
{
' Y! A. y1 \; f; _. X0 \; T2 {+ t if ( NetResource->dwUsage ==
% U. V' h9 m% a+ a9 Q5 ?$ P6 q. S RESOURCEUSAGE_CONTAINER &&
4 z/ ?% ^" P2 p0 w& [! n NetResource->dwType ==
3 r: D r+ C, M RESOURCETYPE_ANY )' ^, G9 z( `+ x* g
{0 }9 X; B( G5 ]& \* S5 q; T
if ( NetResource->lpRemoteName )
( u+ Y' {, O* Q. u) i; e {9 x) C( |/ r6 y, e' N
CString strFullName = ; ]2 b. C: I8 R; k/ L
NetResource->lpRemoteName;
; r9 I& S6 P" l: E" X% L- @ if ( 0 ==
5 _1 F" i5 ^* E/ c strFullName.Left(2).Compare("\\\\") ) ( z7 x7 l% O* H
strFullName = ' [+ K Z5 p9 Z+ }2 z1 q
strFullName.Right(" H+ g* j+ ^6 q
strFullName.GetLength()-2);+ K' w. h9 c; B, W' \$ J. |( Y# K
) y- a0 r4 q: U) [ gethostname( szHostName, 4 _' I% s' W$ {4 }7 m3 [
strlen( szHostName ) );( H5 q6 D) o8 c) ]4 h2 @
host = gethostbyname(strFullName);9 `7 ]. ~4 B: z C/ w3 O# o
2 W1 U3 r1 B3 @1 O: h if(host == NULL) continue;
6 L$ ]3 J, z; Y; y3 Z$ c ptr = (struct in_addr *)
4 F2 A" y% Y7 v5 q5 d* k/ m/ x host->h_addr_list[0];
( [9 _* ?* D" c4 s" y
+ j/ B6 P' R; e* W: G // =. 分隔开IP:211.40.35.76. ' Z) g( Z- `6 ^2 l' c5 e2 z( M
int a = ptr->S_un.S_un_b.s_b1; // 211
7 C. |% P% `0 X5 \! U) {! x9 \ int b = ptr->S_un.S_un_b.s_b2; // 40* q, C1 y* j5 C. X
int c = ptr->S_un.S_un_b.s_b3; // 35/ |7 C _% z5 u. I. _$ n4 F1 K, l% A
int d = ptr->S_un.S_un_b.s_b4; // 76
- F3 d4 R9 l* G2 A( a* q1 O6 v- C
' o/ K( q" R1 A! S6 K: o: K* o strTemp.Format("%s --> %d.%d.%d.%d"," d$ d0 T0 B$ W
strFullName,a,b,c,d);
' L3 Y+ H& T' B$ l; K$ v AfxMessageBox(strTemp); b" T; @8 Z$ w7 x: f
}
5 e& K1 e1 _3 _ }) h7 ^- ?! K7 T$ l* k: ~" ~! U5 T
}
% y2 Q) g! G F) |; V7 s3 l# C4 x0 d' t6 ?2 e/ s" E+ k* P5 H) ^
delete Buffer;
7 L% I2 V* ^, }$ H9 J WNetCloseEnum( hEnum );
' }, p" |6 q; y}
4 w0 _% y% I& v( N
7 @8 c( O1 E) D8 t/ X: g1 eWSACleanup(); |
|