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:
mEqV&M1;7l
1"k
+K~: 一、实现方法
G
cbal:q ~q9RZ#g13J 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:
PF+`3 9#agI|d~ #pragma data_seg("shareddata")
D +oo5 HHOOK hHook =NULL; //钩子句柄
qzG'Gz{{qu UINT nHookCount =0; //挂接的程序数目
d`xqs,0f static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
]f\rB8k|& static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
''(T3;^ +
static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
}Jc^p static int KeyCount =0;
6-^+btl)# static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
)Qo6bei! #pragma data_seg()
D`gY6wX U9If%0P 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。
K>q,?x b z C``G<TB 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:
N$3F4b%+ M\GS&K$lq BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
ePF9Vzq cKey,UCHAR cMask)
HS2)vd@) {
/RMep8& BOOL bAdded=FALSE;
C2VZE~U+ for(int index=0;index<MAX_KEY;index++){
MdPwuXI if(hCallWnd[index]==0){
ik]UzB hCallWnd[index]=hWnd;
6tJM*{$$H HotKey[index]=cKey;
BvYJ!Vj HotKeyMask[index]=cMask;
yb]a p bAdded=TRUE;
c2y5[L7? KeyCount++;
c1Hv^*Y break;
^yfT7050 }
}b{N[ }
R"tLu/S n return bAdded;
p'R}z|d) }
?$gEX@5h //删除热键
:8rqTBa` BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
X-%*`XG' {
4}0s^>R BOOL bRemoved=FALSE;
68D.Li for(int index=0;index<MAX_KEY;index++){
Nc7YMxk'H if(hCallWnd[index]==hWnd){
P3:hGmk8|j if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
#-{4 Jx hCallWnd[index]=NULL;
wvgX5P> HotKey[index]=0;
[3\}Ca1 HotKeyMask[index]=0;
BeVQ[ bRemoved=TRUE;
9\dC8 KeyCount--;
uh GL1{ break;
:0]KIybt }
rSa3u*xB }
K/08F|]a }
Va{`es)hky return bRemoved;
tewC *%3V }
X09&S4
T%:}/@ No h*1u* DLL中的钩子函数如下:
Wx^L~[l e\)PGjSI LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
HtXzMSGo7 {
h nyZXk1| BOOL bProcessed=FALSE;
OpiN,>; if(HC_ACTION==nCode)
RCsd {
tQ*5[F,fm if((lParam&0xc0000000)==0xc0000000){// 有键松开
g4U%(3,>D switch(wParam)
k/*r2 C {
\[Q,>{^ case VK_MENU:
p6sXftk MaskBits&=~ALTBIT;
Bl(we/r break;
2r\f!m' case VK_CONTROL:
N 0`)WLW MaskBits&=~CTRLBIT;
tLLP2^_& break;
$My%7S/3 case VK_SHIFT:
dMYDB MaskBits&=~SHIFTBIT;
2x t
8F break;
P)Sw`^d default: //judge the key and send message
Z}WMpp^r break;
7hQrL+%q8 }
E QMn'> for(int index=0;index<MAX_KEY;index++){
@/7tN3O if(hCallWnd[index]==NULL)
Lxs continue;
EW|bs#l if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
lorjMS {
C#+Gkzq SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
}5u$/c@f1 bProcessed=TRUE;
%r?Y!=0 }
+AO(e }
'
FF@I^O }
3+0$=ef else if((lParam&0xc000ffff)==1){ //有键按下
pFx7URZA switch(wParam)
'0lX;z1 {
zXIVHC,"{ case VK_MENU:
xZwG@+U=X MaskBits|=ALTBIT;
P|l62!m< break;
I ze+]( case VK_CONTROL:
!Qy%sY MaskBits|=CTRLBIT;
wa5wkuS)ld break;
jEo)#j];`< case VK_SHIFT:
Se{}OG) MaskBits|=SHIFTBIT;
Q9Sh2qF^2 break;
Ixk L] default: //judge the key and send message
I r]#u]Ap break;
,(
u-x! }
N2#Wyt8MC for(int index=0;index<MAX_KEY;index++){
$SQUN*/> if(hCallWnd[index]==NULL)
*eK\W00 continue;
uB_8P+h7 if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
C0(?f[/(M {
m<}>'DT SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
NwP!. bProcessed=TRUE;
F>RL&i }
q!iSY }
y(^t &tgjS }
4z%::? if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
b~>kTO for(int index=0;index<MAX_KEY;index++){
69N/_V if(hCallWnd[index]==NULL)
Vq-W|<7C= continue;
5nF46c if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
Sqn|
SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
>8M=REn4 //lParam的意义可看MSDN中WM_KEYDOWN部分
_@2}zT }
{G. W? }
0gTv:1F/ }
M$YU_RPl+ return CallNextHookEx( hHook, nCode, wParam, lParam );
SbLm }
O2{~Q{p /]pJ(FFC 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:
Aqy y\G; 2i0 .x BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
G`D rY; BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
3-~* Eqizx~e qq 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:
p>oC.[:4a {=I:K|& LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
f4 k {
}_mVXjF if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
cV$an {
]y0bgKTK //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
eR3v=Q SaveBmp();
Nwwn #+ return FALSE;
>V%lA3 }
2]of4 …… //其它处理及默认处理
O:E0htdWr }
!\<
[}2} PfR|\{( }]#&U/z 将屏幕图像保存到BMP文件中的任务是由函数SaveBmp()来完成的,具体实现参见代码部分。另外为了顺利实现屏幕抓图,程序中还实现了"托盘"功能,由于这一部分本书在实例中已经专门介绍过了,所以不再赘述,读者朋友可以参考相关实例。
Bo,>blspw fV#,<JG 最后需要提醒读者朋友们注意的是,源程序的编译与使用时要先编译hook.dll并将其放在系统目录(win2000/NT是system32,98/ME是system),然后编译对话框程序运行即可。
l*>,K2F ~U r 二、编程步骤
.} O@<t Wu~cy}\ 1、 启动Visual C++,生成一个DLL项目和一个基于对话框的应用程序项目,并将两个项目分别命名为"Hook"和"Capture";
]4ib^R~Z 'aWqj+Wbh 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
v!`:{)2C l|81_B C" 3、 在"Capture"项目中按照图一所示设置对话框的界面,具体设置参见代码部分;
[I?[N.v 3Ofh#|qc& 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
u\{MQB{T nR]*RIp5 5、 添加代码,编译运行程序。
.C\2f+(U (_%l[:o 6 三、程序代码
Sa[?B }_Ci3|G>%D ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
S zNZY&8
f #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
]]o?!NX #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
0tz? sN #if _MSC_VER > 1000
sYhHh$mwA #pragma once
%[, R Q">v #endif // _MSC_VER > 1000
4bCA"QM[[ #ifndef __AFXWIN_H__
uO>x"D5tZ: #error include 'stdafx.h' before including this file for PCH
+zwS[P@ #endif
j8oX9
Yo0= #include "resource.h" // main symbols
fH@cC` class CHookApp : public CWinApp
<0VC`+p<) {
\gu8 ~zK public:
IgjPy5k CHookApp();
@SH[<c // Overrides
1Ys)b[: // ClassWizard generated virtual function overrides
4{Q$^wD+. //{{AFX_VIRTUAL(CHookApp)
7H*,HZc@= public:
a@Vk(3Rx_ virtual BOOL InitInstance();
>k
==7#P virtual int ExitInstance();
.sc80i4 //}}AFX_VIRTUAL
lN&+<>a //{{AFX_MSG(CHookApp)
9@ 4]t6h[ // NOTE - the ClassWizard will add and remove member functions here.
GSs?!BIC // DO NOT EDIT what you see in these blocks of generated code !
cuC'
o\f //}}AFX_MSG
tU$n3Bg DECLARE_MESSAGE_MAP()
3dz{"hV };
S|xwYaoy% LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
15VvZ![$V BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
M,W-,l
] BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
z;?ztpa@ BOOL InitHotkey();
2}7 _Y6RS* BOOL UnInit();
$}IG+,L #endif
ck%.D%= s$zm)y5 //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
rg;4INs# #include "stdafx.h"
}9^'etD #include "hook.h"
{\`y)k 7 #include <windowsx.h>
@{UUB=}9 #ifdef _DEBUG
AOkG.u-k #define new DEBUG_NEW
j D*<M/4 #undef THIS_FILE
:ssj7wl : static char THIS_FILE[] = __FILE__;
U.V/JbXX #endif
n&o"RE 0~0 #define MAX_KEY 100
m,"-/) #define CTRLBIT 0x04
N
p*T[J #define ALTBIT 0x02
daP_Kz/2K #define SHIFTBIT 0x01
BW6Ox=sr< #pragma data_seg("shareddata")
;&gk)w6* HHOOK hHook =NULL;
St(jrZb UINT nHookCount =0;
p^}`^>OL static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
3.Yg3&"Z static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
J+Fev.9> static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
4DDBf j static int KeyCount =0;
=L@CZ" static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
Yyar{$he #pragma data_seg()
/}2Y-GOU HINSTANCE hins;
T`pDjT void VerifyWindow();
}Xk_
xQVt{ BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
T{^ P //{{AFX_MSG_MAP(CHookApp)
"wcw`TsK // NOTE - the ClassWizard will add and remove mapping macros here.
Z m%,L$F*L // DO NOT EDIT what you see in these blocks of generated code!
gvc/Z <Y //}}AFX_MSG_MAP
9BpxbU+L; END_MESSAGE_MAP()
tl{{Vc[ [3qH?2& CHookApp::CHookApp()
x#&_/oqAk {
63%V_B| // TODO: add construction code here,
)ii aT~
] // Place all significant initialization in InitInstance
YlUh|sK7m }
QZG<sZ0" nSh~mP CHookApp theApp;
!'rdHSy LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
qy.$5-e:[9 {
V=5S=7 Z: BOOL bProcessed=FALSE;
TmftEw>u if(HC_ACTION==nCode)
K?[Vz[-Fc {
U^|T{g+O if((lParam&0xc0000000)==0xc0000000){// Key up
Cse`MP switch(wParam)
h~]e~u V {
E:M,nSc)53 case VK_MENU:
ykJ+LS{+ MaskBits&=~ALTBIT;
[<{r~YFjWW break;
hu} vYA7ZH case VK_CONTROL:
EI*~VFx MaskBits&=~CTRLBIT;
kr~n5WiAZ break;
2L;=wP2?{ case VK_SHIFT:
sbX7VfAR` MaskBits&=~SHIFTBIT;
_q1\8y break;
) 3"!Q+ default: //judge the key and send message
,wM}h break;
?wlRHVZ }
*JFkqbf for(int index=0;index<MAX_KEY;index++){
e&T-GL if(hCallWnd[index]==NULL)
P/WGB~NH continue;
Btzes. if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
2NjgLXP {
FF^h(Ea SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
y*sVimx bProcessed=TRUE;
VR1]CN"G }
D8~\*0-> }
V*2*5hx }
DQ/rx`BG else if((lParam&0xc000ffff)==1){ //Key down
$vO<v<I'Gb switch(wParam)
V?.=_T< {
acUyz2x case VK_MENU:
,ZY\})`p MaskBits|=ALTBIT;
T;{}bc&I break;
l4taD!WD/ case VK_CONTROL:
)
] Ro MaskBits|=CTRLBIT;
w;Fy/XQ break;
wexX|B^u case VK_SHIFT:
N\. g+ W MaskBits|=SHIFTBIT;
,/V~T<FI break;
f9Xa}* default: //judge the key and send message
q\jq9) break;
~(tt.l# }
u\@Qze for(int index=0;index<MAX_KEY;index++)
m*iSW]& {
I
H#CaD if(hCallWnd[index]==NULL)
| ~>7_: continue;
)
d'H&c3 if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
jZmL7
V {
dG~U3\! SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
RZq_}-P,.c bProcessed=TRUE;
eS4t0`kP }
rbv }
1lA? 5: }
@Ss W if(!bProcessed){
#fx"tx6 for(int index=0;index<MAX_KEY;index++){
7tJ#0to if(hCallWnd[index]==NULL)
C-,#t5eir continue;
KkzG#'I1 if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
*'M+oi SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
z$g__q- }
%M8Q6 }
mrG#ox4$ }
Unt]=S3u return CallNextHookEx( hHook, nCode, wParam, lParam );
%Rr_fSoV }
MZX@Gi<S[ N(J#<;!yb BOOL InitHotkey()
oL>o*/ {
Y![i=/ if(hHook!=NULL){
=\i%,YY nHookCount++;
I'n}6D.M return TRUE;
D]'8BS3 }
;8e}X6YU else
c;yp}k]\ hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
#-"C_~-MH if(hHook!=NULL)
Lew
2Z nHookCount++;
j2:9ahW
return (hHook!=NULL);
%|R]nB }
C\{hN BOOL UnInit()
,ag*
/ {
!T~uxeZ/; if(nHookCount>1){
G(F=6L~; nHookCount--;
J=O_nup6C return TRUE;
4/S3hH }
-J]N
&[ BOOL unhooked = UnhookWindowsHookEx(hHook);
*|L;&XM&/ if(unhooked==TRUE){
"18cD5-# nHookCount=0;
*'{9(Oj hHook=NULL;
rJ6N'vw> }
o9]!*Y!RA return unhooked;
=XSupM[T }
(v}l#M7w =6fJUy^M\ BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
t""Y -M {
\vL{f;2J BOOL bAdded=FALSE;
cvtn,Ml6 for(int index=0;index<MAX_KEY;index++){
ej(< Le\ if(hCallWnd[index]==0){
mD?={*7% hCallWnd[index]=hWnd;
N{Pa&/V HotKey[index]=cKey;
cy2K# HotKeyMask[index]=cMask;
A5ckosYyNA bAdded=TRUE;
I "R<XX KeyCount++;
;_=dB[M break;
5'wFZ=>vMt }
N=!k2+ }
PvxU. return bAdded;
7Mh!@Rd_V }
ZJjm r,1 p%\&M bA BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
eQ=6< ^KZ {
i$!K{H1{9 BOOL bRemoved=FALSE;
!]z4'* )W for(int index=0;index<MAX_KEY;index++){
Qb86* if(hCallWnd[index]==hWnd){
%w3tzE1Hq if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
q-+_Y `_\ hCallWnd[index]=NULL;
VY!A]S" HotKey[index]=0;
Gs*X> D HotKeyMask[index]=0;
e~6>8YO+7j bRemoved=TRUE;
4(8BWP~.y2 KeyCount--;
RAxp2uif break;
+OOmy }
reNUIDt/c }
(~#-J7 }
Yjx4H return bRemoved;
e{ZS"e`! }
YE-}1&8 ~=$d>ZNQ void VerifyWindow()
t"&qaG{ {
OlsD for(int i=0;i<MAX_KEY;i++){
(+bt{Ma if(hCallWnd
!=NULL){ *adwCiB
if(!IsWindow(hCallWnd)){ ooN?x31
hCallWnd=NULL; eqU y>
HotKey=0; ebf/cCh
HotKeyMask=0; ,GF(pCZzG
KeyCount--; [5MV$)"!j
} A+"'8%o9}
} ~HUO$*U4<
} nX+c
HF
} [T2!,D.
Y\9zjewc
BOOL CHookApp::InitInstance() p{O@ts:
{ SA,+oq(
AFX_MANAGE_STATE(AfxGetStaticModuleState()); 7@ !3.u1B
hins=AfxGetInstanceHandle(); m]ALW0
InitHotkey(); .oe\wJ S6
return CWinApp::InitInstance(); \{}5VVw-S?
} -^$IjK-N
cx*$GaMk
int CHookApp::ExitInstance() sl G%o5|m
{ XWUi_{zn
VerifyWindow(); <e$%m(]
UnInit(); L&Pj0K-HT3
return CWinApp::ExitInstance(); 3\a VZx!
} 'F^"+Xi
^J&}C
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file
l\{r-F
N
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) cbv%1DT3
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ E-HK=D&W/
#if _MSC_VER > 1000 3q0S}<h al
#pragma once X->` ~-aj
#endif // _MSC_VER > 1000 A=BT2j'l)
)$QZ",&5
class CCaptureDlg : public CDialog LOe l6Ui
{ l#3jJn
// Construction Y?JB%%WWI
public: H:,Hr_;nC
BOOL bTray; #8a k=lL
BOOL bRegistered; 23P7%\
BOOL RegisterHotkey(); p1
mY!&e(
UCHAR cKey; kFQx7m
UCHAR cMask; .N Z
void DeleteIcon(); G$6mtw6[M
void AddIcon(); 6:`4bo
UINT nCount; <y,c.\c!
void SaveBmp(); a- 7RJ.
CCaptureDlg(CWnd* pParent = NULL); // standard constructor 7$Pf
// Dialog Data c=4z+_ K
//{{AFX_DATA(CCaptureDlg) 9PJnKzQ4
enum { IDD = IDD_CAPTURE_DIALOG }; lO8GnkLE
CComboBox m_Key; *:Y9&s^6j
BOOL m_bControl; $!\Z_:
BOOL m_bAlt; 9K=K,6
b
BOOL m_bShift; 4+F@BxpB
CString m_Path; !>6`+$=U
CString m_Number; !+n'0{
//}}AFX_DATA zTfl#%
// ClassWizard generated virtual function overrides *xDV8iu_
//{{AFX_VIRTUAL(CCaptureDlg) 3tCT"UvTD
public: @4P_Yfn
virtual BOOL PreTranslateMessage(MSG* pMsg); Xb1is\JB
protected: C0H@
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support )T'~F
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); M#xol/)h
//}}AFX_VIRTUAL 'F7UnkKO|
// Implementation H=*2A!O[_
protected: P$"s*otr
HICON m_hIcon; E4xybVo@
// Generated message map functions lk4$c1ao2@
//{{AFX_MSG(CCaptureDlg) f!JSb?#3
virtual BOOL OnInitDialog(); 'o1lJ?~kH
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); 5
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afx_msg void OnPaint(); E=qfI>2U&
afx_msg HCURSOR OnQueryDragIcon(); KqWO9d?w.
virtual void OnCancel(); |O[ I=!
afx_msg void OnAbout(); $A>]lLo0
afx_msg void OnBrowse(); KZ|p_{0&
afx_msg void OnChange(); ,UneS
//}}AFX_MSG [B%:!Q)@
DECLARE_MESSAGE_MAP() Dos';9Uq
}; Bx0=D:j
#endif p?x]|`M
gA&`vnNP
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file K]ds2Kp&
#include "stdafx.h" NeniQeR
#include "Capture.h" VQn]"G(`
#include "CaptureDlg.h" M[^EHa<i
#include <windowsx.h> *TYOsD**9
#pragma comment(lib,"hook.lib") gHVD,Jr
#ifdef _DEBUG w,z m!
#define new DEBUG_NEW ^\3z$ntF
#undef THIS_FILE 8%^W<.Y
static char THIS_FILE[] = __FILE__; BU=Ta$#BZ
#endif i^V3u
#define IDM_SHELL WM_USER+1 ]?~[!&h
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); 1K[y)q
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); i/F].Sag
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; I =nvL
class CAboutDlg : public CDialog kl#)0yqN0
{ +=(@=PJ6
public: Klqte*!
CAboutDlg(); JO\KTWtjO
// Dialog Data BXLw
//{{AFX_DATA(CAboutDlg) CMHg]la
enum { IDD = IDD_ABOUTBOX }; 0mI4hy
//}}AFX_DATA jQpG7H
// ClassWizard generated virtual function overrides CV*
//{{AFX_VIRTUAL(CAboutDlg) )!d_Td\-
protected: TJkWL2r0c
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support tMr$N[@r
//}}AFX_VIRTUAL fl<j]{*v
// Implementation wO"ezQ
protected: dlc'=M
//{{AFX_MSG(CAboutDlg) .,gVquqMY
//}}AFX_MSG );fPir?+
DECLARE_MESSAGE_MAP() 9,0}}3J
}; ?f=7F
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CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) PF:E{_~
{ kI/%|L%6D
//{{AFX_DATA_INIT(CAboutDlg) v#$}3+KVC
//}}AFX_DATA_INIT c/`Rv{*'o
} QjyJmW("Z
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void CAboutDlg::DoDataExchange(CDataExchange* pDX) /{nZI_v#
{ k 1;Jkq~
CDialog::DoDataExchange(pDX); 8YkCTJfBGu
//{{AFX_DATA_MAP(CAboutDlg) M,bcTa8
//}}AFX_DATA_MAP d4A3DTW
} n_-k <3
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BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) ]`eJSk.
//{{AFX_MSG_MAP(CAboutDlg) juBzpQYj
// No message handlers 1xMD
)V:
//}}AFX_MSG_MAP T1fX[R ^\
END_MESSAGE_MAP() B-aJn8>/
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CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) jp+#N
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: CDialog(CCaptureDlg::IDD, pParent) K<7 Db4H
{ dF0:'y
//{{AFX_DATA_INIT(CCaptureDlg) 'K3%@,O
m_bControl = FALSE; cUZ^,)8
Z
m_bAlt = FALSE; ?1lx8+
m_bShift = FALSE; j:'!P<#
m_Path = _T("c:\\"); w}Xy;0c
m_Number = _T("0 picture captured."); /BfCh(B
nCount=0; btIh%OM
bRegistered=FALSE; {$^Lb4O[V
bTray=FALSE; vA,tW,
//}}AFX_DATA_INIT s h^&3}
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 kNTxYJ
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); ^W<uc :L7
} J`{HMv
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void CCaptureDlg::DoDataExchange(CDataExchange* pDX) S]&7
{ Xu&4|$wB+
CDialog::DoDataExchange(pDX); 8sxH)"S
//{{AFX_DATA_MAP(CCaptureDlg) {
w:9w
DDX_Control(pDX, IDC_KEY, m_Key); ];G$~[
DDX_Check(pDX, IDC_CONTROL, m_bControl); y5bELWA
DDX_Check(pDX, IDC_ALT, m_bAlt); `(?x@Y>.Ht
DDX_Check(pDX, IDC_SHIFT, m_bShift); @X*r5hjc
DDX_Text(pDX, IDC_PATH, m_Path); ;l'kPUv([
DDX_Text(pDX, IDC_NUMBER, m_Number); ,c'a+NQ_t
//}}AFX_DATA_MAP KmlpB
} @ 6{U*vs
} ~#^FFe
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) j=,]b6(
//{{AFX_MSG_MAP(CCaptureDlg) zMQ|j_l9E
ON_WM_SYSCOMMAND() YKs^aQm#
ON_WM_PAINT() /4n :!6rt
ON_WM_QUERYDRAGICON() k,nRC~Irh
ON_BN_CLICKED(ID_ABOUT, OnAbout) {,rVA(I@
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) +A,t9 3:k
ON_BN_CLICKED(ID_CHANGE, OnChange) SZQ4e
//}}AFX_MSG_MAP xlWTHn!j
END_MESSAGE_MAP() ^ 04|tda
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BOOL CCaptureDlg::OnInitDialog() Z*(lg$A9M
{ 7T3ub3\
CDialog::OnInitDialog(); ~
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ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); q^hL[:ms#
ASSERT(IDM_ABOUTBOX < 0xF000); A_WtmG_9
CMenu* pSysMenu = GetSystemMenu(FALSE); <C9_5Ce~
if (pSysMenu != NULL) -dn\*n5
{ )
Pdl[+a
CString strAboutMenu; q"[8u ]j
strAboutMenu.LoadString(IDS_ABOUTBOX); Mo2b"A;}|
if (!strAboutMenu.IsEmpty()) Q0j$u[x6s
{ )} H46
pSysMenu->AppendMenu(MF_SEPARATOR); &LS&O
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); EO5k?k[*
} I JAWG
} >9.xFiq<
SetIcon(m_hIcon, TRUE); // Set big icon V3u[{^^f
SetIcon(m_hIcon, FALSE); // Set small icon
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m_Key.SetCurSel(0); 3:h9cO/9
RegisterHotkey(); &&;ol}W
CMenu* pMenu=GetSystemMenu(FALSE); |E)Es!dr
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); xNh#= 6__9
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); ;_lEu" -
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); -/.Xf<y58
return TRUE; // return TRUE unless you set the focus to a control siHS@S
} *kXSl73 k
]r{-K63P{!
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) /IS
j0"/$
{ =;/4j'1}9
if ((nID & 0xFFF0) == IDM_ABOUTBOX) Gw$sL&1m\
{ wr=h=vXU[
CAboutDlg dlgAbout; :A,V<Es}I"
dlgAbout.DoModal(); _|S>,D'
} oOhm`7iy
else lMX 2O2 o
{ ~O)Uz|
CDialog::OnSysCommand(nID, lParam); Ok+zUA[Wu
} 7RmL#f`
} ,x?H]a)
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void CCaptureDlg::OnPaint() )K8k3]y&
{ UlHRA[SCv
if (IsIconic()) |#x;}_>7
{ " -4V48ci
CPaintDC dc(this); // device context for painting mAFqA
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); ?=]`X=g6
// Center icon in client rectangle x-0IxWD%
int cxIcon = GetSystemMetrics(SM_CXICON); oAX -Sg-/$
int cyIcon = GetSystemMetrics(SM_CYICON); /LM*nN$%
CRect rect; M#J OX/
GetClientRect(&rect); 2hV#3i
int x = (rect.Width() - cxIcon + 1) / 2; ObIi$uJX
int y = (rect.Height() - cyIcon + 1) / 2; UAT46
// Draw the icon "aN<3b
dc.DrawIcon(x, y, m_hIcon); >w jWX{&?
} h'<}N
else v.)'be*u
{ e0HG"z4
CDialog::OnPaint(); e_+`%A+-
} YNbs*i&
} =iRi9r'l
,~FyC_%*
HCURSOR CCaptureDlg::OnQueryDragIcon() UM7Ft"
{ PG9won5_
return (HCURSOR) m_hIcon; $"T1W=;j9
} J={$q1@lq
S(5.y%"<
void CCaptureDlg::OnCancel() __c:$7B/4U
{ cD8.rRyD
if(bTray) fcb:LPk;
DeleteIcon(); k+44ud.j
CDialog::OnCancel(); gh}FZs5P
} R! ?8F4G
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void CCaptureDlg::OnAbout() f3U#|(%(*
{ XZuJ<]}X,
CAboutDlg dlg; !,Wd$UK
dlg.DoModal(); 1j6ZSE/*|
}
}nYm^Yh
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void CCaptureDlg::OnBrowse() E8=.TM]L
{ &6,GX7]Fo
CString str; bOux8OHt*
BROWSEINFO bi; @y->4`N
char name[MAX_PATH]; BgD;"GD*W
ZeroMemory(&bi,sizeof(BROWSEINFO)); 7i~::Z <
bi.hwndOwner=GetSafeHwnd(); j*Q/vY!T
bi.pszDisplayName=name; >DQl&:-)t
bi.lpszTitle="Select folder"; @\Sa)
bi.ulFlags=BIF_RETURNONLYFSDIRS; _x z_D12
LPITEMIDLIST idl=SHBrowseForFolder(&bi); 9M~EH?>+[
if(idl==NULL) `8\pihww
return; b=-<4Vu*\
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); 1[J&^@t[h6
str.ReleaseBuffer(); J'Yj_
m_Path=str; o&g=Z4jj<
if(str.GetAt(str.GetLength()-1)!='\\') ):&A\nb
m_Path+="\\"; X.,SXNS+B
UpdateData(FALSE); b.h~QyI/W
} H0
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q+dY&4&u
void CCaptureDlg::SaveBmp() 5h+g^{BE
{
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CDC dc; )& %X
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dc.CreateDC("DISPLAY",NULL,NULL,NULL); "Z }'u2%\m
CBitmap bm; _+wou(1y
int Width=GetSystemMetrics(SM_CXSCREEN); FM0)/6I'x
int Height=GetSystemMetrics(SM_CYSCREEN); @pY AqX2
bm.CreateCompatibleBitmap(&dc,Width,Height); >t'/(y
CDC tdc; (E&}SI~
tdc.CreateCompatibleDC(&dc); @8|- C
CBitmap*pOld=tdc.SelectObject(&bm); bU=!~W5
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); c%Yvj
tdc.SelectObject(pOld); ;QW6Tgt11
BITMAP btm; "X>Z!>
bm.GetBitmap(&btm); :Py/d6KK
DWORD size=btm.bmWidthBytes*btm.bmHeight; eek5Xm
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); iF{eGi
BITMAPINFOHEADER bih; Bca\grA
bih.biBitCount=btm.bmBitsPixel; -#Yg B5
bih.biClrImportant=0; <QugV3e
bih.biClrUsed=0;
):+n!P
bih.biCompression=0; +J]3)8y+
bih.biHeight=btm.bmHeight; k:Uyez
bih.biPlanes=1; C:_!zY'z
bih.biSize=sizeof(BITMAPINFOHEADER); * ?rw'
bih.biSizeImage=size; T5-50nU,~
bih.biWidth=btm.bmWidth; !?Z}b.%W
bih.biXPelsPerMeter=0; b3H~a2"d
bih.biYPelsPerMeter=0; Up*p*(d3
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); {w(6Tc
static int filecount=0; E[Tz%x=P
CString name; 5sM-E>8G^{
name.Format("pict%04d.bmp",filecount++); c|:H/Y2n|
name=m_Path+name; P@lExF*D1:
BITMAPFILEHEADER bfh; ]3NH[&+
bfh.bfReserved1=bfh.bfReserved2=0; 2l{g$44
bfh.bfType=((WORD)('M'<< 8)|'B'); Zu_m$Mx
bfh.bfSize=54+size; @mNf(&
bfh.bfOffBits=54; oS/<)>\Gv
CFile bf; KU"?ZI
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ fR~_5pt7
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); p;"pTGoWi
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); rfkk3oy
bf.WriteHuge(lpData,size); 82YTd(yB
bf.Close(); s59v*
/
nCount++; 3K @dW"3
} u<]-%ha$
GlobalFreePtr(lpData); a/NmM)
if(nCount==1) E O52 E|
m_Number.Format("%d picture captured.",nCount); DFwkd/3"
else S?D|"#-,
m_Number.Format("%d pictures captured.",nCount); bDeHU$
UpdateData(FALSE); $`i$/FE
} ]ch cRc[!
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BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) n (C*LK
{ PM=Q\0
if(pMsg -> message == WM_KEYDOWN) {[jcT>.3j
{ [0lCb"
if(pMsg -> wParam == VK_ESCAPE) m[LIM}Gu
return TRUE; [`Ol&R4k
if(pMsg -> wParam == VK_RETURN) f#ID:Ap3
return TRUE; )p~\lM}?d
} 2_x}wB0P
return CDialog::PreTranslateMessage(pMsg); L
oe!@c
} 'aBX>M
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