在Windows操作系统中,当用户按下"PrintScreen"按钮后,Windows自动将当前屏幕的图像拷贝到系统剪贴板中,这时可以通过"画笔"这个小程序将剪贴板中的内容保存成图像文件,可以看出,如果需要将当前屏幕保存下来还是比较麻烦的,能否可以自己编写一个应用程序,自动将当前屏幕的内容保存到一个图像文件中去呢?这个答案是肯定的,本实例应用程序就是利用通用的热键管理DLL库实现的热键功能,在收到热键通知后截取屏幕的内容并保存到bmp文件中。例如我们设置图片保存路径为c:\,热键为F9 + Control,然后按Change按钮设置好热键,那么当我们按下CTRL+F9后,当前界面将以BMP图像文件的格式被保存在C:\目录下。程序编译运行后的界面效果如图一所示:
\H*"UgS
z./u;/: 一、实现方法
g.s~Ph- G o D*h@yL 热键管理DLL实际上是一个键盘钩子,由它来监视系统的键盘事件。如果有和程序登记符合的按键组合就通知该程序的窗口。为了应用方便,本实例把它做成了一个标准的管理库来为其它的程序通过热键服务,它有两个输出函数:AddHotkey()和DeleteHotkey(),程序只需要调用这两个函数就可以了,如果编译之后不用改变热键,则只需要AddHotkey就可以了。DLL中的所有的全局变量都放在一个共享段中,定义如下:
km}%7|R? +smPR #pragma data_seg("shareddata")
^$6EO)< HHOOK hHook =NULL; //钩子句柄
tegLGp@_ UINT nHookCount =0; //挂接的程序数目
RnIL>Akp static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
n>+M4Zb static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
@L=xY[&{ static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
ZvkO#j static int KeyCount =0;
^ bexXYh static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
W.HM!HQp #pragma data_seg()
<Ktx*(D R3jhq3F\Y 关于共享段,有几点重要的说明:一是必须在链接选项里指定该段为共享:一种方法是在project->settings->link->object/library中加上/section:shareddata,rws;第二种方法是在def文件的sections里加上一句shareddata read write shared;第三种指定共享段的方法在程序里加上一句#pragma comment(linker,"section:shareddata,rws")。二是所有的变量必须初始化,否则链接程序会把它放到普通数据段。三是如果不初始化变量,需要在段外用"__declspec(allocate("shareddata")) 变量类型 变量名"的方式定义。
wx>BNlT@? Ih{(d O; DLL中的两个输出函数分别用来添加/删除热键,函数代码如下:
|*fGG?} ^^{K[sLB BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
k129)79 cKey,UCHAR cMask)
=xw) [ {
54-sb~] BOOL bAdded=FALSE;
&+xNR2"; for(int index=0;index<MAX_KEY;index++){
p4fU/ if(hCallWnd[index]==0){
|/Ggsfmby hCallWnd[index]=hWnd;
(VI4kRj HotKey[index]=cKey;
* A@~!@XE4 HotKeyMask[index]=cMask;
1Vp['& bAdded=TRUE;
';^VdR]fk KeyCount++;
GghZ".O break;
v<ASkkh> }
h&{9 &D1t }
,*+F*:o(m return bAdded;
~ Z=Q+'Hu0 }
^}a..@|%W //删除热键
^I5k+cL BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
gH,^XZe {
P@`@?kMU BOOL bRemoved=FALSE;
\uc]+nV!o for(int index=0;index<MAX_KEY;index++){
3T'9_v[Y if(hCallWnd[index]==hWnd){
JpcG5gX^B if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
[W,Ej hCallWnd[index]=NULL;
i
?%;s5< HotKey[index]=0;
d!D#:l3; HotKeyMask[index]=0;
yS0!#AG bRemoved=TRUE;
X"z^4?Aj+ KeyCount--;
h
rW break;
f1rP+l-C< }
~5N0=) }
rFh!&_ }
r,cV( return bRemoved;
2TXrVaM }
Y^M3m'd? 4[44Eku\ _s[ohMlh DLL中的钩子函数如下:
_U?
|e!%6Qq3 LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
`WboM\u {
Rp^kD ,* BOOL bProcessed=FALSE;
Q_$aiE if(HC_ACTION==nCode)
]o$aGrZ {
% r`hW\4{ if((lParam&0xc0000000)==0xc0000000){// 有键松开
)>QpR8
G- switch(wParam)
^RAst1q7 {
fZw/kjx@ case VK_MENU:
p9 <XaJ} MaskBits&=~ALTBIT;
2-s ,PQno^ break;
66(|3D X case VK_CONTROL:
G|H+
,B MaskBits&=~CTRLBIT;
--6C>iY[&u break;
UMILAoR case VK_SHIFT:
bBk_2lg=4) MaskBits&=~SHIFTBIT;
y'((
tBWa! break;
s /"&k default: //judge the key and send message
"oz
: & #+ break;
T`mG+"O }
+DmfqKKbd for(int index=0;index<MAX_KEY;index++){
6!sC if(hCallWnd[index]==NULL)
_ I"}3* continue;
1YV ;pEw3w if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
0/5
a3-3{ {
++w7jVi9 SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
?12[8 bProcessed=TRUE;
Hb55RilC }
D_]4]&QYT }
4
3V{q }
& Xm!i(i else if((lParam&0xc000ffff)==1){ //有键按下
>o9tlO) switch(wParam)
mE=%+:o. {
L1ro\ H case VK_MENU:
\f\CK@ MaskBits|=ALTBIT;
o-a\T break;
^ >JAl<k case VK_CONTROL:
8JYU1Ew MaskBits|=CTRLBIT;
Tsg;i; break;
.;}vp* case VK_SHIFT:
UCV1 { MaskBits|=SHIFTBIT;
!k@(}CN_* break;
GVR/p default: //judge the key and send message
QiC}hj$ break;
]s_,;PG U }
]dIcW9a for(int index=0;index<MAX_KEY;index++){
bca4'`3\| if(hCallWnd[index]==NULL)
;}1O\nngR continue;
/|Z_Dy if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
o1lhVM`15 {
)
rw!. )
SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
TS4Yzq,f bProcessed=TRUE;
lt08
E2p9 }
~/^q>z!\4 }
`&ufdn\j }
Gk:tT1 if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
P^[eTR*? for(int index=0;index<MAX_KEY;index++){
pLj[b4p9 if(hCallWnd[index]==NULL)
*I]/ [d continue;
+2xgMN6B@ if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
g$f+X~Q SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
R*0]*\C z //lParam的意义可看MSDN中WM_KEYDOWN部分
7<GC{/^T }
{,aX|*1Ku~ }
~(*2:9*0 }
Fz11/sKz return CallNextHookEx( hHook, nCode, wParam, lParam );
?}g^/g ! }
(yrN-M4~t VOJA}$ 抓图程序是一个基于对话框的程序,它在建立对话框的时候调用前面的DLL,登记热键,因此需要将hook.lib添加到工程里,在程序里给出两个DLL函数的定义,也可以写个头文件,再包含进来以下代码:
cYmgJBG #{_iNr a9 BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
(vP<} BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
2$r8^}Nj? }TQa<;Q 为了添加应用程序对热键通知事件的响应,程序中用的办法是重载WindowProc()函数,该函数代码如下:
|P0!dt7sQ 0\zY?UUww LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
)DB\du {
"w&IO}j;= if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
Oh# z zo {
a\-AGG{2/X //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
:A7\eN5 SaveBmp();
+[vIocu return FALSE;
uwl_TDc>% }
JAx0(MZO …… //其它处理及默认处理
8+i=u"< }
fHK.q({Qc IJ]rVty rMWJ 将屏幕图像保存到BMP文件中的任务是由函数SaveBmp()来完成的,具体实现参见代码部分。另外为了顺利实现屏幕抓图,程序中还实现了"托盘"功能,由于这一部分本书在实例中已经专门介绍过了,所以不再赘述,读者朋友可以参考相关实例。
Gr-~&pm ,I6li7V 最后需要提醒读者朋友们注意的是,源程序的编译与使用时要先编译hook.dll并将其放在系统目录(win2000/NT是system32,98/ME是system),然后编译对话框程序运行即可。
5'\detV_ @eJ6UML" 二、编程步骤
&NKb},~ 5o6X.sC8e 1、 启动Visual C++,生成一个DLL项目和一个基于对话框的应用程序项目,并将两个项目分别命名为"Hook"和"Capture";
%u}#|+8} -*A1[Z ? 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
<$(y6+lY }1
,\*)5 3、 在"Capture"项目中按照图一所示设置对话框的界面,具体设置参见代码部分;
.^dtdFZ8, \VpN:RI 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
}7*|s+F(f 7Q^p|;~a 5、 添加代码,编译运行程序。
brCXimG&jo 'Zs3b4n8 三、程序代码
j(A>M_f; x8w l ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
+=:_a$98 #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
W_L*S4 ~ #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
w_h{6Kc< #if _MSC_VER > 1000
cgnMoBIc #pragma once
P!Brw72 #endif // _MSC_VER > 1000
Q5c3C&$6 #ifndef __AFXWIN_H__
QLH!> 9Ch #error include 'stdafx.h' before including this file for PCH
!RP0W #endif
en>n\;U #include "resource.h" // main symbols
> ^=n|% class CHookApp : public CWinApp
~R&rQJJeJ {
q68CU~i* public:
JC0# pU; CHookApp();
yh2)Pc[ // Overrides
S B~opN // ClassWizard generated virtual function overrides
zLgc j(; //{{AFX_VIRTUAL(CHookApp)
5@DCo public:
+e^CL#Gs virtual BOOL InitInstance();
E{0e5. { virtual int ExitInstance();
Qr\eT} //}}AFX_VIRTUAL
+BeA4d8b //{{AFX_MSG(CHookApp)
inY_cn? // NOTE - the ClassWizard will add and remove member functions here.
0W0GSDx // DO NOT EDIT what you see in these blocks of generated code !
3!
#|hI>f //}}AFX_MSG
;A4qE W DECLARE_MESSAGE_MAP()
egK~w8`W% };
"cyRzQ6EH LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
(gnN</% BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
Atb`Q'Yrw BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
DKJ_g.]X BOOL InitHotkey();
b@c(Nv BOOL UnInit();
XV/7K" #endif
_aYhW{wW 0SU v 5c //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
p>,D F9W` #include "stdafx.h"
g$ HL:: #include "hook.h"
No"i6R+ #include <windowsx.h>
ul3~!9F5F #ifdef _DEBUG
0C;Js\>3] #define new DEBUG_NEW
8 :WN@ #undef THIS_FILE
)ut$644R static char THIS_FILE[] = __FILE__;
-RJ~Sky[ #endif
(/At+MF3E #define MAX_KEY 100
^vxx]Hji #define CTRLBIT 0x04
BTD_j&+( #define ALTBIT 0x02
X!:J1'FE #define SHIFTBIT 0x01
#]dq^B~~ #pragma data_seg("shareddata")
gg.]\#3g HHOOK hHook =NULL;
&#JYh=# UINT nHookCount =0;
<THwl/a static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
6fo\z2 static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
@ R[K8 static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
`*cqT static int KeyCount =0;
j85B{Mab& static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
m62Zta #pragma data_seg()
w[F})u]E HINSTANCE hins;
8nng^ void VerifyWindow();
Mk~U/oq BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
e]nP7TIU //{{AFX_MSG_MAP(CHookApp)
T ay226 // NOTE - the ClassWizard will add and remove mapping macros here.
zJP jsD] // DO NOT EDIT what you see in these blocks of generated code!
?
V1ik[ //}}AFX_MSG_MAP
De>e`./56 END_MESSAGE_MAP()
CuK>1_Dq Fm=jgt3wv8 CHookApp::CHookApp()
cHt4L]n8n {
sBYDo{01 // TODO: add construction code here,
ZBR^$?nj // Place all significant initialization in InitInstance
k>F!S`a&m }
2Y%7.YX" 5Q
<vS"g CHookApp theApp;
*=O]^|]2 LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
9+MW13? {
t
#Kucde BOOL bProcessed=FALSE;
KB^8Z@(+ if(HC_ACTION==nCode)
V,=5}qozQ {
XlD=<$Nk7 if((lParam&0xc0000000)==0xc0000000){// Key up
iZ>P>x\ switch(wParam)
p6NPWaBR
{
_h4]gZ case VK_MENU:
q6N{N>-D MaskBits&=~ALTBIT;
w&f>VB~,1 break;
CVvl &on case VK_CONTROL:
W4$aX5ow$ MaskBits&=~CTRLBIT;
S !#5 break;
4i.&geXA. case VK_SHIFT:
@54$IhhT~ MaskBits&=~SHIFTBIT;
x&^Xgi? break;
za}Kd^KeB default: //judge the key and send message
V)Oot| break;
Y-Q)sv }
(&NLLrsio for(int index=0;index<MAX_KEY;index++){
k~so+k&=b if(hCallWnd[index]==NULL)
,t QNL\t continue;
:-#7j}
R& if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
<{8x-zbR+ {
MM]0}65KG SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
M"W#_wY; bProcessed=TRUE;
BKO^ux% }
cWyf04-? }
WMnSkO }
7D,nxx(` else if((lParam&0xc000ffff)==1){ //Key down
s-5#P,Lw switch(wParam)
7FkiT {
BJ]L@L% case VK_MENU:
FX9W Xb4w MaskBits|=ALTBIT;
*J]p/<> { break;
\a7m!v case VK_CONTROL:
IJKdVb~ MaskBits|=CTRLBIT;
c~/poFj break;
n$NM case VK_SHIFT:
S"@6, MaskBits|=SHIFTBIT;
5FuV=Y uc break;
A(uo%QE| default: //judge the key and send message
B_iaty break;
={v(me0ZPb }
Yr~wsE/ for(int index=0;index<MAX_KEY;index++)
JL!^R_b&c {
\D'mo if(hCallWnd[index]==NULL)
m>48?% continue;
rXzq: if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
[kpQ:'P3 {
$L( ,lB SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
_VjaTw8iM bProcessed=TRUE;
#tpz74O }
@YRy)+ }
?/1LueC: }
5 (!F Q if(!bProcessed){
?u&|'ASo for(int index=0;index<MAX_KEY;index++){
7[0Mr,^ if(hCallWnd[index]==NULL)
=w;-4 continue;
-xLK/QAL if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
;nL7Hizo, SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
a#+$.e5 }
|A,.mOT }
y{<js!au }
8@+<W%+th return CallNextHookEx( hHook, nCode, wParam, lParam );
N-b'O`C }
fj['M6+wd R\X;`ptT BOOL InitHotkey()
\2[tM/+Bs {
-dF (_ %C if(hHook!=NULL){
p
%.Adxx nHookCount++;
g$mMH return TRUE;
*2N0r2t& }
"M+I$*] else
\v+c. hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
)(yaX if(hHook!=NULL)
v!DK.PZbi nHookCount++;
)Ghw!m return (hHook!=NULL);
{S-M] LE }
J E5qR2VA BOOL UnInit()
Z_dL@\#| {
~`Vo0Z*S if(nHookCount>1){
pzjNi=vhd nHookCount--;
8kSyT'kC% return TRUE;
]8OmYU%6V }
Ake l .& BOOL unhooked = UnhookWindowsHookEx(hHook);
etX(~"gG_ if(unhooked==TRUE){
\p}GW nHookCount=0;
k >.U ! hHook=NULL;
k,'MmAz }
<\uDtbK return unhooked;
S&y${f }
ollVg/z !mWm@}Ujg BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
~iiDy;" {
i9rv8"0> BOOL bAdded=FALSE;
iD%a;] for(int index=0;index<MAX_KEY;index++){
|7n%8JsY!" if(hCallWnd[index]==0){
w(Tr,BFF hCallWnd[index]=hWnd;
uVhzJu. HotKey[index]=cKey;
jA2%kX\6// HotKeyMask[index]=cMask;
-qvMMit%7 bAdded=TRUE;
Wi5Dl= KeyCount++;
Isvb;VT9L break;
pbqk }
T*Ge67 }
=
=Q*|L-g return bAdded;
9 `bLQd }
-OmpUv-O" Ktt(l-e + BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
)+Z.J]$O- {
z19%!k BOOL bRemoved=FALSE;
dblf,x for(int index=0;index<MAX_KEY;index++){
0|K<$e6IH if(hCallWnd[index]==hWnd){
fuCt9Kjo< if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
F\&^(EL hCallWnd[index]=NULL;
P.k>6T<U> HotKey[index]=0;
Uc,.. HotKeyMask[index]=0;
U|.r -$|5P bRemoved=TRUE;
EBk-qd
a} KeyCount--;
y=+OC1k\8 break;
w8N1-D42 }
Y`$\o }
LfU? 1:Du }
xe(7q1 return bRemoved;
g2^{+,/^K }
v@2@9/ %qE"A6j void VerifyWindow()
EB}~^ aY {
&;r'JIp for(int i=0;i<MAX_KEY;i++){
^
T`T?*h if(hCallWnd
!=NULL){ *qLk'<
if(!IsWindow(hCallWnd)){ mea}
9]c
hCallWnd=NULL; @x
A^F%(
HotKey=0; :yi} CM4
HotKeyMask=0; Q3$DX,8?
KeyCount--; H d7Vp:KM
} _akjgwu
} sKs`gi2
} SS8$.ot
} ./.aLTh
P|lDW|}D@
BOOL CHookApp::InitInstance() O8v9tGZoh
{ R47y/HG,
AFX_MANAGE_STATE(AfxGetStaticModuleState()); S9nn^vsK
hins=AfxGetInstanceHandle(); UA]T7r@
InitHotkey(); 1=9GV+`n
return CWinApp::InitInstance(); )a'`
} 0"TPY(n
'Ox "YE
int CHookApp::ExitInstance() ZFH-srs{
{ ]mNsG0r6
VerifyWindow(); Oi$1ma xT
UnInit(); m!^$_d\%~
return CWinApp::ExitInstance(); =(P$P
} v_v>gPl,
&
@_PY
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file Ku uiU=
(L
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) xI#rnx*
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ p15dbr1
#if _MSC_VER > 1000 2
w!
0$
#pragma once 3,*A VcQA
#endif // _MSC_VER > 1000 "H@I~X=
h#)\K|
qs
class CCaptureDlg : public CDialog B`3z(a92S
{ M0)0~#?.D
// Construction c(b`eUOO
public: r~oUln<[
BOOL bTray; -ULgVGYKK
BOOL bRegistered; ![vy{U.:`
BOOL RegisterHotkey(); g3Hi5[-H
UCHAR cKey; W >}T$a}\
UCHAR cMask; g`.H)36
void DeleteIcon(); ~ oq.y n/1
void AddIcon(); hBaG*J{
UINT nCount; {-]K!tWda
void SaveBmp(); ;p<BiC$b
CCaptureDlg(CWnd* pParent = NULL); // standard constructor iyUnxqP
// Dialog Data ,+C?UW
//{{AFX_DATA(CCaptureDlg) w}(pc}^U
enum { IDD = IDD_CAPTURE_DIALOG }; :ec>[N~KG
CComboBox m_Key; 3A~<|<}t
BOOL m_bControl; i$hWX4L
BOOL m_bAlt; QR~4Fe
BOOL m_bShift; T/%Y_.NtU
CString m_Path; ,VUOsNN4\
CString m_Number; ux6)K= ]
//}}AFX_DATA MU `!sb*
// ClassWizard generated virtual function overrides 0Ny +NE:6M
//{{AFX_VIRTUAL(CCaptureDlg) $3ZQ|X[|+
public: 5
I#-h<SG
virtual BOOL PreTranslateMessage(MSG* pMsg); gXn`!
protected: gQu!(7WLI
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support X>o*eN
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); Ky8,HdAq
//}}AFX_VIRTUAL $/(``8li_
// Implementation [(TmAEON
protected: I4UsDs*BD
HICON m_hIcon; d>#X+;-k
// Generated message map functions g1 y@z8Z{
//{{AFX_MSG(CCaptureDlg) O ]-8 %
virtual BOOL OnInitDialog(); K *1]P ar;
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); Ic&YiATj
afx_msg void OnPaint(); IeA/<'Us
afx_msg HCURSOR OnQueryDragIcon(); Ro<5c_k
virtual void OnCancel(); L>hLYIW
afx_msg void OnAbout();
M\JAB ;A
afx_msg void OnBrowse(); n<b}6L}
afx_msg void OnChange(); <Zfh5AM
//}}AFX_MSG |\|
v%`r2
DECLARE_MESSAGE_MAP() R{aqn0M
}; 0 A8G8^T
#endif I)r6*|mz
e85E+S%
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file MAX?,-x
#include "stdafx.h" KZ65#UVX
#include "Capture.h" /1.Z=@ 7
#include "CaptureDlg.h" TC=>De2;
#include <windowsx.h> /Zx"BSu
#pragma comment(lib,"hook.lib") V! TGFo}
#ifdef _DEBUG _pvt,pW
#define new DEBUG_NEW L/GVQjb
#undef THIS_FILE Z$('MQ|Ur
static char THIS_FILE[] = __FILE__; YbZ?["S&
#endif d]sg9`
#define IDM_SHELL WM_USER+1 JL u$UR4
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); !Bg^-F:N
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); Y[rCF=ZVH
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; od,,2pwK+
class CAboutDlg : public CDialog ! z5c+JqN
{ ,LLx&jS
public: &Akw V-
CAboutDlg(); jSdC1,wR
// Dialog Data @q@I(%_`
//{{AFX_DATA(CAboutDlg) 6~?yn-Z
enum { IDD = IDD_ABOUTBOX }; q8GCO\(
//}}AFX_DATA Gtvbm
// ClassWizard generated virtual function overrides : ?Z9
//{{AFX_VIRTUAL(CAboutDlg) }~0}B[Rf
protected: Y$|KY/)H)
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
j~9Y0jz_
//}}AFX_VIRTUAL }y(cv}8Y
// Implementation KxFA@3
protected: p -!/p#
//{{AFX_MSG(CAboutDlg) )lU ocm
//}}AFX_MSG q8R,#\T*
DECLARE_MESSAGE_MAP() 'fzJw
}; zpNt[F?~1
]'>jw#|h
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) Go]y{9+(7
{ {aopGu?i
//{{AFX_DATA_INIT(CAboutDlg) W55kR.X6M
//}}AFX_DATA_INIT &a\G,Ma
} :Z83*SPc
z$/s` |]
void CAboutDlg::DoDataExchange(CDataExchange* pDX) kaECjZ_&+
{ o##!S6:A
CDialog::DoDataExchange(pDX); E=,fdyj.
//{{AFX_DATA_MAP(CAboutDlg) P/k#([:2
//}}AFX_DATA_MAP G \$x.
} ;xai JJK{
^0I"
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) fX1Ib$v
//{{AFX_MSG_MAP(CAboutDlg) `:0Auw9h
// No message handlers C8(0|XX
//}}AFX_MSG_MAP "0z4mQ}>N
END_MESSAGE_MAP() XN3'k[
9%MgA ik(
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) $}0\sj%
: CDialog(CCaptureDlg::IDD, pParent) nVP|{M
{ Udjn.D
//{{AFX_DATA_INIT(CCaptureDlg) jG#e%`'
m_bControl = FALSE; gS|6,A9
m_bAlt = FALSE; rTST_$"_6
m_bShift = FALSE; 01]W@\(
m_Path = _T("c:\\"); F"23vG>3
m_Number = _T("0 picture captured."); N~?#Qh|ZnU
nCount=0; jPc,+?
bRegistered=FALSE; :C&6M79k
bTray=FALSE; p<FqK/
//}}AFX_DATA_INIT .^ba*qb`{
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 85A7YraL
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); c;#gvE
} 1k$5'^]^9]
g<8Oezi 65
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) 2';{o=TXV
{ >I+p;V$@
CDialog::DoDataExchange(pDX); ]x'd0GH"]
//{{AFX_DATA_MAP(CCaptureDlg) G) 37?A)
DDX_Control(pDX, IDC_KEY, m_Key); rfh`;G5s
DDX_Check(pDX, IDC_CONTROL, m_bControl); JM*!(\Y
DDX_Check(pDX, IDC_ALT, m_bAlt); /f=31<+MtF
DDX_Check(pDX, IDC_SHIFT, m_bShift); _X{ GZJm
DDX_Text(pDX, IDC_PATH, m_Path); scE#&OWF%
DDX_Text(pDX, IDC_NUMBER, m_Number); ? a/\5`gnN
//}}AFX_DATA_MAP [BEQ ~A_I
} q1rD>n&d
%."w]fy>P
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) \@{TF((Y
//{{AFX_MSG_MAP(CCaptureDlg) WZviC_
ON_WM_SYSCOMMAND() $L'[_J
ON_WM_PAINT() F$YT4414
ON_WM_QUERYDRAGICON() #3FsK
ON_BN_CLICKED(ID_ABOUT, OnAbout) O6\c1ha
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) A":cS }Ui
ON_BN_CLICKED(ID_CHANGE, OnChange) JEeXoGKd
//}}AFX_MSG_MAP 2LCOB&-Ww
END_MESSAGE_MAP() S++jwP
d^5x@E_Td
BOOL CCaptureDlg::OnInitDialog() nM!_C-yX
{ *3fhVl=8^*
CDialog::OnInitDialog(); yy`XtJBWWs
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); gL7rX a j
ASSERT(IDM_ABOUTBOX < 0xF000); 7oCY@>(f
CMenu* pSysMenu = GetSystemMenu(FALSE); z)u\(W*\iA
if (pSysMenu != NULL) 8rLhOA
{ A^\g]rmK
CString strAboutMenu; ?lU(FK
strAboutMenu.LoadString(IDS_ABOUTBOX); AU8sU?=
if (!strAboutMenu.IsEmpty()) 8/"C0I (G
{ !~xlze
pSysMenu->AppendMenu(MF_SEPARATOR); /.t1Ow
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); }Am5b@g"$Y
} 'sa>G
} R)=){SI:1)
SetIcon(m_hIcon, TRUE); // Set big icon /:C<{m.[}
SetIcon(m_hIcon, FALSE); // Set small icon o"p['m*g
m_Key.SetCurSel(0); nIfp0U*
RegisterHotkey(); Jpn= ^f[rm
CMenu* pMenu=GetSystemMenu(FALSE); j=u)
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pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); L=I;0Ip9y
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); 2~yj
=D27Z
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); rG%8ugap
return TRUE; // return TRUE unless you set the focus to a control ZT<VDcP{
} ~sNBklK
(543`dqAmC
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) tLP
Er@
{ _C,9c7K4
if ((nID & 0xFFF0) == IDM_ABOUTBOX) `r %lB
{ P!XO8X 1F
CAboutDlg dlgAbout; Ggbz
dlgAbout.DoModal(); R}D[ z7
} kR8,E 6Up
else 5?f!hB|6
{ EZZE(dq@gf
CDialog::OnSysCommand(nID, lParam); oE,TA2
} 1So`]N4
} " z -tL
sg4(@>
void CCaptureDlg::OnPaint() nZEew.T:6
{ m;ju@5X
if (IsIconic()) y-~_ W 6\
{ Us%g&MWdpb
CPaintDC dc(this); // device context for painting uF[~YJ>
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); 7ab'q&Y[
// Center icon in client rectangle 7zowvE?#
int cxIcon = GetSystemMetrics(SM_CXICON); 60WlC0Y~u
int cyIcon = GetSystemMetrics(SM_CYICON); fk\]wFj
CRect rect; ONFx -U]
GetClientRect(&rect); mRxeob
int x = (rect.Width() - cxIcon + 1) / 2; ^,`]Q)P^
int y = (rect.Height() - cyIcon + 1) / 2; 4hkyq>c}
// Draw the icon 02-% B~oP
dc.DrawIcon(x, y, m_hIcon); n|B<rx?v
} E,Xl8rC
else jrX`_Y
{ XR$i:kL,,
CDialog::OnPaint(); =o'g5Be<F
} b)r;a5"<5
} *aGJ$ P0
& u6ydN1xe
HCURSOR CCaptureDlg::OnQueryDragIcon() ;s+3#Py
{ =>@
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return (HCURSOR) m_hIcon; 8TTj<T!N
} e2L>"/
`$3ktQ $
void CCaptureDlg::OnCancel() ST,+]p3L(
{ .0MY$ 0s
if(bTray) pdjRakN
DeleteIcon(); Y&bO[(> 1
CDialog::OnCancel(); .9UrWBW\I
} _v++NyZXx
B[t>T>~
void CCaptureDlg::OnAbout() #+$PD`j
{ 46~nwi$,^
CAboutDlg dlg; Tt,T6zs-<
dlg.DoModal(); L^K,YlNBR
} CY$
1;/
KDj/S-S
void CCaptureDlg::OnBrowse() PzustC|
{ BnaI30-
CString str; ;J:* r0
BROWSEINFO bi; $f>(TW
char name[MAX_PATH]; q(Ow:3&
ZeroMemory(&bi,sizeof(BROWSEINFO)); bH!_0+$P
bi.hwndOwner=GetSafeHwnd(); ^oNcZK>
bi.pszDisplayName=name; Fl}!3k>c
bi.lpszTitle="Select folder"; t3=K>Y@w
bi.ulFlags=BIF_RETURNONLYFSDIRS; \[%_ :9eq
LPITEMIDLIST idl=SHBrowseForFolder(&bi); _joW%`T8
if(idl==NULL) Y=y
0`?K
return; .:e#!~Ki
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); 8~g~XUl
str.ReleaseBuffer(); qggRS)a
m_Path=str; RLcC>Z
if(str.GetAt(str.GetLength()-1)!='\\') ZvK.X*~s
m_Path+="\\"; ~yA^6[a =
UpdateData(FALSE); 3sDyB-\&
} nGur2}>n
AoK;6je`K^
void CCaptureDlg::SaveBmp() P,rLyx
{ XEN-V-Z%*
CDC dc; y.(m#&T
dc.CreateDC("DISPLAY",NULL,NULL,NULL); *:`fgaIDa
CBitmap bm; O3pd5&^g
int Width=GetSystemMetrics(SM_CXSCREEN); .')^4\
int Height=GetSystemMetrics(SM_CYSCREEN); Dw
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bm.CreateCompatibleBitmap(&dc,Width,Height); E )2/Vn2
CDC tdc; BgY|v
[M&
tdc.CreateCompatibleDC(&dc); Dj 6^|R$z&
CBitmap*pOld=tdc.SelectObject(&bm); 8?|W-rN
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); n#B}p*G
tdc.SelectObject(pOld); V}Oz!
O
BITMAP btm; KIKIag#
bm.GetBitmap(&btm); ^==Tv+T9U
DWORD size=btm.bmWidthBytes*btm.bmHeight; JOs
kf(
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); {wO.nOB
BITMAPINFOHEADER bih; <vu~EY0.
bih.biBitCount=btm.bmBitsPixel; `,4YPjk^
bih.biClrImportant=0; 2EO9IxIf
bih.biClrUsed=0; ce719n$
bih.biCompression=0; l_,6<wWp
bih.biHeight=btm.bmHeight; Mgu9m8
`J
bih.biPlanes=1; ;ZkY[5
bih.biSize=sizeof(BITMAPINFOHEADER); }iLi5Qkx
bih.biSizeImage=size; %=V"
}P[
bih.biWidth=btm.bmWidth; &3)6WD?:U
bih.biXPelsPerMeter=0; p0}Yo8? OW
bih.biYPelsPerMeter=0; z80*Ylx
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); /q/^B>]
static int filecount=0; K7/&~;ZwT
CString name; `m$,8f%j6_
name.Format("pict%04d.bmp",filecount++); $U(D*0+o/
name=m_Path+name; mxe\+j#
BITMAPFILEHEADER bfh; >
kwhZ/x
bfh.bfReserved1=bfh.bfReserved2=0; "chf\-!$
bfh.bfType=((WORD)('M'<< 8)|'B'); ^x_.3E3Q
bfh.bfSize=54+size; a
FWTm,)
bfh.bfOffBits=54; g;:3I\ L
CFile bf; ^;?w<9Y
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ SCfk!GBVD
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); ETR7%0$r
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); ?zVcP=p@
bf.WriteHuge(lpData,size); dkSd
Y+Q
bf.Close(); F)19cKx7
nCount++; v[?gM.SF
} oeI[x
GlobalFreePtr(lpData); ^}:0\;|N
if(nCount==1) /gn\7&