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:
Epj
$r|R`n = 一、实现方法
I"Y d6M%
; *F* c 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:
B3K!>lz ~t[ #p: #pragma data_seg("shareddata")
R~8gw^w![ HHOOK hHook =NULL; //钩子句柄
\kcJF'JFA0 UINT nHookCount =0; //挂接的程序数目
v1<gNb)` static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
&B^#?vmO static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
E@TX>M-& static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
3Yf%M66t static int KeyCount =0;
BM=`zGh" static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
_ _cJ+%e #pragma data_seg()
;'l Hw]}O* B04%4N.g"X 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。
w]]`/` &[,g`S0 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:
H|;6K`O_ `GOxFDB. BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
=2uE\6Fl, cKey,UCHAR cMask)
6la# 0U23 {
^tX+<X
BOOL bAdded=FALSE;
}MP2)6 for(int index=0;index<MAX_KEY;index++){
mN+~fuh if(hCallWnd[index]==0){
)bRe"jxn7 hCallWnd[index]=hWnd;
!3U1HS-i62 HotKey[index]=cKey;
hnZI{2XzBE HotKeyMask[index]=cMask;
S+H#^WSt bAdded=TRUE;
*}R5=r0 KeyCount++;
RrKAgw break;
v:1l2Y)g }
S_LY>k? }
q88p~Ccoa return bAdded;
nV 38Mj2U }
*V#v6r7<Y/ //删除热键
yq+<pfaqvK BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
vLR)B@O,2 {
:|`'\%zW- BOOL bRemoved=FALSE;
xP*9UXZ4P for(int index=0;index<MAX_KEY;index++){
2!>phE if(hCallWnd[index]==hWnd){
(bt^L3}a if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
X@Eq5s hCallWnd[index]=NULL;
;=: R| HotKey[index]=0;
s([9/ED HotKeyMask[index]=0;
T~8` {^ bRemoved=TRUE;
+A8S 6bA[= KeyCount--;
Na: M1Uhb break;
^.Q{Aqu#.H }
% \N.m/5 }
^!k^=ST1J }
F3jrJ+nJ return bRemoved;
Djx9TBZ5 }
RBr %_u*5,w Uo(\1&? DLL中的钩子函数如下:
g*t.g@B<2 <kn#`w1U' LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
?# >|P-4 {
^q"p8 BOOL bProcessed=FALSE;
[ /*$?PXt if(HC_ACTION==nCode)
~cSC-|$^& {
!Y=s_)X if((lParam&0xc0000000)==0xc0000000){// 有键松开
o;FjpZ switch(wParam)
+f\tqucI3 {
Zm%}AzM case VK_MENU:
\F,?ptu MaskBits&=~ALTBIT;
;1S{xd*^N break;
G,{L=xOh case VK_CONTROL:
NrVQK}%K MaskBits&=~CTRLBIT;
dDW],d}B; break;
7qon:]b4 case VK_SHIFT:
U"-mLv"| MaskBits&=~SHIFTBIT;
X ~4^$x break;
v3S{dX< default: //judge the key and send message
gv `jeN break;
GEA@AD=^f }
%xxe U for(int index=0;index<MAX_KEY;index++){
L3Ry#uw if(hCallWnd[index]==NULL)
*Dh.'bB! continue;
L"zOa90ig if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
b9EJLD {
;Iw'TF SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
ec1snMY bProcessed=TRUE;
gtJ^8khME }
]gTaTY }
( NjX?^ }
{ZbeF#*" else if((lParam&0xc000ffff)==1){ //有键按下
j='Ne5X1 switch(wParam)
_+|* {
'Twi
@I case VK_MENU:
dge58A)Q MaskBits|=ALTBIT;
qTqvEa^X` break;
N<Bi.\XC case VK_CONTROL:
dcU|y%k% MaskBits|=CTRLBIT;
'BAe>r_Pn break;
po=*%Zs*T case VK_SHIFT:
7`X"B*`~b MaskBits|=SHIFTBIT;
F
xFK break;
TuIeaH% x default: //judge the key and send message
8i-?\VZD break;
j])iyn~-Ke }
Iay7Fkv for(int index=0;index<MAX_KEY;index++){
,-] JCcH if(hCallWnd[index]==NULL)
:KX/` continue;
H=X>o.iVqi if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
d q:M!F {
Btpx[T SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
NXeo&+F bProcessed=TRUE;
V$q%=Sip }
2_r}4)z }
_I{&5V~z }
b%$S6. if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
H/)= for(int index=0;index<MAX_KEY;index++){
V2,.@j# if(hCallWnd[index]==NULL)
pe,c continue;
7azxqa5: if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
2#/ KS^ SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
Z|8f7@k{|+ //lParam的意义可看MSDN中WM_KEYDOWN部分
xR#hU;E} }
ip>dHj
z }
Om}&`AP}; }
7Fy^K;V" return CallNextHookEx( hHook, nCode, wParam, lParam );
9D<^)ShY }
s\7|b:y& {GWcw<g.B 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:
v{% /aw t"0~2R6i BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
B|, 6m 3. BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
l*X5<b9 6h+/C]4 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:
2"__jp:( <V6#)^Or LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
}ZYK3F {
J8b]*2D if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
`=-}S+ {
tD4IwX //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
t9K.Jc0 SaveBmp();
|0qk return FALSE;
0-|1}/{4 }
H?'VQ=j …… //其它处理及默认处理
"X]ufZ7 }
Z@I%ppd 3ZZJYf= IZ2#jSDn 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。
U_VD* F4Bv k*M{?4 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。
YRYrR|I RhQOl9 二、编程步骤
Ix *KL=MG l^Lg"m2 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";
]iz5VI@ G&uj}rj 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
PTePSj1N P@5^`b| 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;
P?0b-Qr$a )bK<t 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
6]rrj o9~qJnB/O 5、 添加代码,编译运行程序。
hM8G"b U-lN_? 三、程序代码
"lz!'~im yTDoS|B+) ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
"(C}Dn# #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
e<C5}#wt #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
n[iil$VKh #if _MSC_VER > 1000
5 ;|9bWH #pragma once
6iC}%eU #endif // _MSC_VER > 1000
RK'( {1 #ifndef __AFXWIN_H__
6&u,. #error include 'stdafx.h' before including this file for PCH
Gf%o|kX] #endif
`8y & #include "resource.h" // main symbols
M?\)&2f[Z class CHookApp : public CWinApp
F~DG:x~ {
($cu!$lY~ public:
g{D&|qWj CHookApp();
a"EQldm|d // Overrides
"QlCcH`g // ClassWizard generated virtual function overrides
71A{" //{{AFX_VIRTUAL(CHookApp)
\7C >4 public:
4\$Ze0tv virtual BOOL InitInstance();
/60[T@Mz virtual int ExitInstance();
$PTedJ}*Y //}}AFX_VIRTUAL
7H[+iS0 //{{AFX_MSG(CHookApp)
)0GnTB;5Z // NOTE - the ClassWizard will add and remove member functions here.
O]PfQ // DO NOT EDIT what you see in these blocks of generated code !
FF_$)%YUp //}}AFX_MSG
XsR%_eT DECLARE_MESSAGE_MAP()
<wSmfg,yF };
jkdNisq37 LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
Y3Qq'FN!I BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
.(Pe1pe BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
1L9^N BOOL InitHotkey();
4p-$5Fk8} BOOL UnInit();
W*s`1O > #endif
4]+ ^K` r2<+ =INn //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
IIu3mXAw #include "stdafx.h"
Zq`bd55~ #include "hook.h"
,v6Jr3 #include <windowsx.h>
nQP0<_S #ifdef _DEBUG
TY#1Z )% #define new DEBUG_NEW
N%_~cR; #undef THIS_FILE
tL).f:? static char THIS_FILE[] = __FILE__;
'|q:h #endif
)RkU='lB " #define MAX_KEY 100
yNT2kB' #define CTRLBIT 0x04
PIr Uls0} #define ALTBIT 0x02
Q72wg~% w #define SHIFTBIT 0x01
^Qr
P.l#pZ #pragma data_seg("shareddata")
P"]+6sm&es HHOOK hHook =NULL;
lLJb3[
e. UINT nHookCount =0;
XWvs~Xw@ static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
8bysg9H0 static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
}3*h`(Bv7 static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
Lhc@*_2 static int KeyCount =0;
<.' cCY static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
J`8>QMK^5 #pragma data_seg()
\LYQZ*F HINSTANCE hins;
D-~Jj&7 void VerifyWindow();
b:3hKW BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
zk/!#5JtK //{{AFX_MSG_MAP(CHookApp)
Xo*$|9[. // NOTE - the ClassWizard will add and remove mapping macros here.
R5i8cjKZ?w // DO NOT EDIT what you see in these blocks of generated code!
dyp]y$ //}}AFX_MSG_MAP
q+:(@w6 END_MESSAGE_MAP()
XnY}dsSO ]_=HC5" CHookApp::CHookApp()
c,-x}i0c {
'LOqGpmVc // TODO: add construction code here,
EiN.VU ` // Place all significant initialization in InitInstance
'wZy: c }
XVLuhwi C[KU~@ CHookApp theApp;
= ;a4
Dp LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
V*m)h {
TZP{=v< BOOL bProcessed=FALSE;
mQvKreo~ if(HC_ACTION==nCode)
_Pz3QsV9 {
j(BS;J$i if((lParam&0xc0000000)==0xc0000000){// Key up
O}`01A!u; switch(wParam)
:aqh8bv {
Dsua13 hF case VK_MENU:
ZB2'm3'bh MaskBits&=~ALTBIT;
v\k,,sI break;
}ri*e2y) case VK_CONTROL:
rzmk-V MaskBits&=~CTRLBIT;
'H'+6 break;
h@~X*yLKh case VK_SHIFT:
e>>G4g MaskBits&=~SHIFTBIT;
ICTtubjV" break;
bSR<d default: //judge the key and send message
[s34N+vU break;
&Kve vPF }
wW<"l"x, for(int index=0;index<MAX_KEY;index++){
/SKr.S61e if(hCallWnd[index]==NULL)
W@C56fCa continue;
]p*)
PpIl if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
:fYwFD( 9 {
_Ry.Wth SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
6uXW`/lvX bProcessed=TRUE;
pzax~Vp }
tZYI{m{ }
0V#t ;`Q3 }
)[)]@e else if((lParam&0xc000ffff)==1){ //Key down
9HE(*S switch(wParam)
G}-.xj] {
?|7+cz$g case VK_MENU:
D{4hNO MaskBits|=ALTBIT;
} >w break;
Ntnmd case VK_CONTROL:
XH *tChf< MaskBits|=CTRLBIT;
D+)=bPMe break;
._&lG3' case VK_SHIFT:
N.G*ii\ MaskBits|=SHIFTBIT;
_tReZ(Vw break;
!TOi]`vqc default: //judge the key and send message
pu:D/2R2;k break;
i@CMPz-h& }
1a$V{Eag for(int index=0;index<MAX_KEY;index++)
5y3TlR {
QP[a^5;Tt if(hCallWnd[index]==NULL)
u,akEvH~a continue;
8$v7|S6 z if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
W^ :/0WR {
;F""}wzn SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
^!<7#kX bProcessed=TRUE;
3N"&P@/0x }
N
&[,nUd }
]k:m2$le }
6}T%m?/ } if(!bProcessed){
W|#ev*'F for(int index=0;index<MAX_KEY;index++){
euhZ4+ if(hCallWnd[index]==NULL)
1D[P\r- continue;
T{<@MK%],d if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
_0*>I1F~ SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
B-~&6D, }
p},Fwbl }
.G_3blE; }
M#cr*% return CallNextHookEx( hHook, nCode, wParam, lParam );
0Ad~!Y+1 }
dn\F! M91lV(Z BOOL InitHotkey()
k<| l\]w {
>NRz*h # if(hHook!=NULL){
/plUzy2Yu nHookCount++;
,imvA5 return TRUE;
ewrWSffe }
+qj*P9 else
/HuYduGdP hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
06^1#M$' if(hHook!=NULL)
j 3MciQ` nHookCount++;
@pGlWw9* return (hHook!=NULL);
uT} TSwgp }
p RwGv BOOL UnInit()
UB$`;'|i {
HS:}![P if(nHookCount>1){
kr(<Y| nHookCount--;
aoDD&JE return TRUE;
E^ok`wfO }
F> QT| BOOL unhooked = UnhookWindowsHookEx(hHook);
`f+8WPJPZ if(unhooked==TRUE){
r^A#[-VyNP nHookCount=0;
=b<<5N s hHook=NULL;
BO4 K#H7 }
9J7J/]7f return unhooked;
A3$aMCwKd }
8F^,8kIR _ML~c&9jv BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
\`/E
!ub {
>yBxa) BOOL bAdded=FALSE;
akhL\-d)al for(int index=0;index<MAX_KEY;index++){
,=Nw(GI if(hCallWnd[index]==0){
F[CT l3X hCallWnd[index]=hWnd;
o? i.v0@!K HotKey[index]=cKey;
v]T(zL| HotKeyMask[index]=cMask;
nF<y7XkO bAdded=TRUE;
lW$&fuDHF KeyCount++;
Z|(c(H2 break;
"Ug/
',jkV }
%A62xnX }
#<wpSs return bAdded;
S&3X~jD(1 }
rj,K`HD %XI"<Y\yL BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
Wzqb>. {
`(,*IK a BOOL bRemoved=FALSE;
{@V3?pG?p for(int index=0;index<MAX_KEY;index++){
}xb_s if(hCallWnd[index]==hWnd){
z,bX.*.- if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
>&;>PZBPCO hCallWnd[index]=NULL;
l#b|@4:I HotKey[index]=0;
+`*qlP; HotKeyMask[index]=0;
7wQ+giu bRemoved=TRUE;
`pi-zE) KeyCount--;
t0bhXFaiE break;
abo>_"9- }
sm;E2BR$
` }
QtY hg$K3 }
`~_H=l9{ return bRemoved;
S,9NUt }
%i$M/C" ( PZuq'^p void VerifyWindow()
(/U)>%n {
U|J$?aFDr for(int i=0;i<MAX_KEY;i++){
5fu+rU-# if(hCallWnd
!=NULL){ ,\lYPx\P[
if(!IsWindow(hCallWnd)){ %o@['9U[j
hCallWnd=NULL; vm\wO._
HotKey=0; (Pv`L
HotKeyMask=0; xHJ8?bD p
KeyCount--; Q1`<fD
} 6F*-qb3
} rFmKmV
} /5Zp-Pq
} y9C;T(oi;
1E5a(
BOOL CHookApp::InitInstance() X,TTM,1w
{ _[OF"X2
AFX_MANAGE_STATE(AfxGetStaticModuleState()); U{uPt*GUd/
hins=AfxGetInstanceHandle(); u C,"5C
InitHotkey(); ]C16y.
~e
return CWinApp::InitInstance(); ;&Bna#~B
} U*3AM_w
R:'Ou:Mh
int CHookApp::ExitInstance() )MWUS;O<
{ xF(
bS+(o
VerifyWindow(); [1{SY=)
UnInit(); qoC]#M$oo#
return CWinApp::ExitInstance(); Xhcn]
} 4$
Dt8!p0
R_1)mPQ^P
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file H2qf'
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) iHAU|`'N)
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ b7B+eN ?z
#if _MSC_VER > 1000 #NvQmz?J?
#pragma once %G;0T;0L
#endif // _MSC_VER > 1000 _wf5%(~b
Ih.rC>)rx
class CCaptureDlg : public CDialog h+,'B&=|_
{ d_Q*$Iz)3
// Construction #zON_[+s9
public: 0QMTIAW6h
BOOL bTray; >Z+"`"^o}
BOOL bRegistered; Q
[rj
BOOL RegisterHotkey(); i2){xg~c
UCHAR cKey; O:
,$%
UCHAR cMask; }]AT _bh,
void DeleteIcon(); @j O4EEe:
void AddIcon(); q7X}MAW
UINT nCount; r&}(9Cq&"y
void SaveBmp(); U1ZIuDg'E
CCaptureDlg(CWnd* pParent = NULL); // standard constructor \6{krn|
// Dialog Data qysTjGwa]
//{{AFX_DATA(CCaptureDlg) iI5+P`sE&J
enum { IDD = IDD_CAPTURE_DIALOG }; s\[LpLt
CComboBox m_Key; KZ=u54
BOOL m_bControl; &V'519vmoZ
BOOL m_bAlt; t3PtKgP-6
BOOL m_bShift; 7vn%kW=$
CString m_Path; ~C&*.ZR
CString m_Number; &&=[Ivv
//}}AFX_DATA hAm/mu
// ClassWizard generated virtual function overrides %2f//SZ:
//{{AFX_VIRTUAL(CCaptureDlg) Hd9XfU
public: Ju!(gh
virtual BOOL PreTranslateMessage(MSG* pMsg); [r)eP({
protected: %Y~>Jl
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support dsJm>U)
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); *LANGQ"2(i
//}}AFX_VIRTUAL &59F8JgJ
// Implementation .it#`Yz;
protected: x^G'rF"nT
HICON m_hIcon; 5%*w<6<_z
// Generated message map functions =#qZ3 Qz_
//{{AFX_MSG(CCaptureDlg) L!t@-5~
virtual BOOL OnInitDialog(); ,CP5~4u
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); zh\p
afx_msg void OnPaint(); k<a;[_S
afx_msg HCURSOR OnQueryDragIcon(); .evbE O 5
virtual void OnCancel(); |EKu2We*
afx_msg void OnAbout(); ,57$N&w
afx_msg void OnBrowse(); =;0wFwSz
afx_msg void OnChange(); j^flwk
//}}AFX_MSG \v+u;6cx_
DECLARE_MESSAGE_MAP() ~#R9i^Y
}; "#yJHsu]
#endif Ko6^iI1
NzQ9Z1Mxy
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file : [q0S@
#include "stdafx.h" 'OwyyPBF
#include "Capture.h" #B8*gFZB
#include "CaptureDlg.h" v2Bzx/F:
#include <windowsx.h> dBSbu=^$ )
#pragma comment(lib,"hook.lib") v,=v
#ifdef _DEBUG jjRUL.
#define new DEBUG_NEW pY@Y?Jj
#undef THIS_FILE *z'8j
static char THIS_FILE[] = __FILE__; !Uh2}ic
#endif <a4TO8
#define IDM_SHELL WM_USER+1 As~(7?]r
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); -(i(02PX
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); k|xtrW`qo;
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; 5G(3vRX|1
class CAboutDlg : public CDialog +k.%PO0np
{ (a@?s$LG
public: rq sdE
CAboutDlg(); `:eU.
// Dialog Data -&|:0#@P
//{{AFX_DATA(CAboutDlg) #sTEQjJ,J
enum { IDD = IDD_ABOUTBOX }; 5c5oSy+
//}}AFX_DATA pd3,pQ
// ClassWizard generated virtual function overrides Y4E/?37j
//{{AFX_VIRTUAL(CAboutDlg) $<nCXVqL,
protected:
%@Oma
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support &$'z
//}}AFX_VIRTUAL \8S~c8Z~
// Implementation uI~s8{0T6
protected: )[L^Dmd,
//{{AFX_MSG(CAboutDlg) ).5RPAP
//}}AFX_MSG D f4+^B,1
DECLARE_MESSAGE_MAP() 5!I4l1
}; J NVr
lhH`dG D
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) !z 53OT!
{ k|vI<:'p,
//{{AFX_DATA_INIT(CAboutDlg) 1TS0X:TCn
//}}AFX_DATA_INIT r@U3sO#N
} %c|UmKKi
(Glr\q]jF\
void CAboutDlg::DoDataExchange(CDataExchange* pDX) =w$tvo/
{ =-KMb`xT
CDialog::DoDataExchange(pDX); 8j5<6Cv_
//{{AFX_DATA_MAP(CAboutDlg) /ASaB
//}}AFX_DATA_MAP v>Lm;q(
} HDVW0QaMu
Z(u5$<up
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) ~YP Jez
//{{AFX_MSG_MAP(CAboutDlg) X(A.X:"
// No message handlers m/B6[
//}}AFX_MSG_MAP N~^yL <O
END_MESSAGE_MAP() {2&m`Dbm
GsQ*4=C
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) HOoPrB m
: CDialog(CCaptureDlg::IDD, pParent) (#D*Pl
{ >j*;vG5T
//{{AFX_DATA_INIT(CCaptureDlg) WIr2{+#
m_bControl = FALSE; 'G&{GVbXY
m_bAlt = FALSE; r%@Lej5+
m_bShift = FALSE; P>i%7:OMZA
m_Path = _T("c:\\"); P 1XK*GZ
m_Number = _T("0 picture captured."); m<rhIq
nCount=0; NGC,lv
bRegistered=FALSE; Wy .IcWK
bTray=FALSE; &;i
"P
//}}AFX_DATA_INIT %" D%:
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 0NDftcB]
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); *\}}Bv+9
} mLh kI!4[
=( v^5
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) j;b42G~p
{ p;T{i._iL
CDialog::DoDataExchange(pDX); #[{3} %b
//{{AFX_DATA_MAP(CCaptureDlg) N_eX/ux
DDX_Control(pDX, IDC_KEY, m_Key); VU`OO$,W
DDX_Check(pDX, IDC_CONTROL, m_bControl); m: n`g1
DDX_Check(pDX, IDC_ALT, m_bAlt); uhyj5u)
DDX_Check(pDX, IDC_SHIFT, m_bShift); VhL{'w7f
DDX_Text(pDX, IDC_PATH, m_Path); A4C+5R
DDX_Text(pDX, IDC_NUMBER, m_Number); ({r*=wAP
//}}AFX_DATA_MAP #LlUxHv #
} <%.5hCTp97
VKp*9%9
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) fhPkEvJ
//{{AFX_MSG_MAP(CCaptureDlg) vhbDb)J
ON_WM_SYSCOMMAND() O.aG[wm8
ON_WM_PAINT() cH'
iA.
ON_WM_QUERYDRAGICON() -l~Z0U>^
ON_BN_CLICKED(ID_ABOUT, OnAbout) W%<LTWOc
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) 2. G=8:l
ON_BN_CLICKED(ID_CHANGE, OnChange) b-ll
//}}AFX_MSG_MAP MP Z3D9
END_MESSAGE_MAP() v
^[39*8
F{06 _T
BOOL CCaptureDlg::OnInitDialog() sUZX
}
{ [^CV>RuO
CDialog::OnInitDialog(); [.se|]t7X
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); N`iwC!
ASSERT(IDM_ABOUTBOX < 0xF000); PZxAH9 S?
CMenu* pSysMenu = GetSystemMenu(FALSE); <+MyZM(z>
if (pSysMenu != NULL) ]i(-I <`
{ L`f^y;Y.
CString strAboutMenu; U,#yqER'r
strAboutMenu.LoadString(IDS_ABOUTBOX); > fnh+M
if (!strAboutMenu.IsEmpty()) *IgE)N>
{ Z4<L$i;/jN
pSysMenu->AppendMenu(MF_SEPARATOR); A?_ =K
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); ZkL8 e
} ]]7mlQ
} O[tvR:Nh
SetIcon(m_hIcon, TRUE); // Set big icon Q!-
0xlx
SetIcon(m_hIcon, FALSE); // Set small icon P-F)%T[
m_Key.SetCurSel(0); W} WI; cI
RegisterHotkey(); A.<H>=Z#O
CMenu* pMenu=GetSystemMenu(FALSE); .2d9?p3Y
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); We0.3aG
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); r/pH_@
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); Grs]d-xI
return TRUE; // return TRUE unless you set the focus to a control 4BnSqw a_
} `E+Jnu,jC
QaUm1i#
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) ?
WJ> p
{ ^`un'5Vk
if ((nID & 0xFFF0) == IDM_ABOUTBOX) S$KFf=0
{ >U F
CAboutDlg dlgAbout; f#+el
y
dlgAbout.DoModal(); QXCH(5as
} 720PjQ
else DZzN>9<)^
{ J>fQNW!{
CDialog::OnSysCommand(nID, lParam); +"9hWb5
} g^*<f8 ~d
} ; ^t{Il'j
N0hE4t
void CCaptureDlg::OnPaint() dJ$"l|$$
{ fXrXV~'8
if (IsIconic()) d%l{V6
{ ^u3V
E
CPaintDC dc(this); // device context for painting OL4z%mDZi
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); oIUy -|
// Center icon in client rectangle U(~+o
int cxIcon = GetSystemMetrics(SM_CXICON); &-(463
int cyIcon = GetSystemMetrics(SM_CYICON); 8r3A~
CRect rect; 3?Y 2L
GetClientRect(&rect); 9x,RvWTb
int x = (rect.Width() - cxIcon + 1) / 2; >S$Z
int y = (rect.Height() - cyIcon + 1) / 2; ss;R8:5
// Draw the icon 8~5cJPi6
dc.DrawIcon(x, y, m_hIcon); 5 ae2<Y=
} F~A 'X
else [O:
!(Gje
{ SG6sw]x
CDialog::OnPaint(); y:v, j42%
} ySI~{YVM
} 9 \^|6k,
Mq';S^
HCURSOR CCaptureDlg::OnQueryDragIcon() cuOvN"nuNj
{ %Uz(Vd#K
return (HCURSOR) m_hIcon; =8U&[F
} R<B7K?SxV~
7GDHz.IX
void CCaptureDlg::OnCancel() kdGT{2u
{ ,3nN[)dk
if(bTray) OY?y ^45y
DeleteIcon(); JN7k 2]{
CDialog::OnCancel(); !^Q.VYY
} @&[T _l
Y@PI {;!
void CCaptureDlg::OnAbout() /x3/Ubmz~x
{ l<M'=-Y
CAboutDlg dlg; *)+ut(x|#
dlg.DoModal(); ?-1r$31p
} &=4(l|wcg
LM2TZ
void CCaptureDlg::OnBrowse() RT%pDym\
{ sXNb }gJ
CString str; CbN!1E6).
BROWSEINFO bi; *Q1~S]g
char name[MAX_PATH]; )V!dBl"Gq
ZeroMemory(&bi,sizeof(BROWSEINFO)); bXS:x
bi.hwndOwner=GetSafeHwnd(); c6Y\n%d&
bi.pszDisplayName=name; HF3f)}l$
bi.lpszTitle="Select folder"; W_0>y9?
bi.ulFlags=BIF_RETURNONLYFSDIRS; :d ~|jS
LPITEMIDLIST idl=SHBrowseForFolder(&bi); ?
w^-
if(idl==NULL)
&y<ZE
return; jsNF#yE>
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); Wh&8pH:
str.ReleaseBuffer(); L/"0ws_
m_Path=str; o/ui)U_
if(str.GetAt(str.GetLength()-1)!='\\') Y#g4$"G9
m_Path+="\\"; \W%UZs
UpdateData(FALSE); id$Ul?z8
} '=l[;Q^Q
<})'Y~i
void CCaptureDlg::SaveBmp() NV#FvM/#"
{ <8,cuX\
CDC dc; I* VCpaA
dc.CreateDC("DISPLAY",NULL,NULL,NULL); a')|1DnR
CBitmap bm; ^B+!N;
int Width=GetSystemMetrics(SM_CXSCREEN); !+:ov'F
int Height=GetSystemMetrics(SM_CYSCREEN); n8.kE)?
bm.CreateCompatibleBitmap(&dc,Width,Height); w9|w2UK
CDC tdc; >2By
+/!X
tdc.CreateCompatibleDC(&dc); _v*
nlc
CBitmap*pOld=tdc.SelectObject(&bm); j)
,,"54*
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); 8/K!SpM*d
tdc.SelectObject(pOld); *28pRvY:b
BITMAP btm; Q:$Zy
bm.GetBitmap(&btm); $ Y 7c
DWORD size=btm.bmWidthBytes*btm.bmHeight; IEyL];K
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); &.Zb,r$Y
BITMAPINFOHEADER bih;
^ :F.
bih.biBitCount=btm.bmBitsPixel; J!DF^fLe
bih.biClrImportant=0; DS<}@
bih.biClrUsed=0; b"TjGE
bih.biCompression=0; &7_Qd4=08w
bih.biHeight=btm.bmHeight; \lSU
bih.biPlanes=1; _!|/
;Nk
bih.biSize=sizeof(BITMAPINFOHEADER); pJ
?~fp
bih.biSizeImage=size; >"Q@bQ:e
bih.biWidth=btm.bmWidth; MCdx?m3]
bih.biXPelsPerMeter=0; p6vKoI#T
bih.biYPelsPerMeter=0; /y>>JxAEb
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); pAk/Qxl3eo
static int filecount=0; D\e8,,H
CString name; x|{IwA9
name.Format("pict%04d.bmp",filecount++); N:9>dpP}O
name=m_Path+name; #]'rz,E<
BITMAPFILEHEADER bfh; san,|yrMn
bfh.bfReserved1=bfh.bfReserved2=0; B4]`-mahO
bfh.bfType=((WORD)('M'<< 8)|'B'); ]~\sA
bfh.bfSize=54+size; y9KB< yh/
bfh.bfOffBits=54; l9M0cZ,
CFile bf; <r3J0)r}
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ JCW\ *R
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); kHqzt g
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); %e@#uxm
bf.WriteHuge(lpData,size); It75R}B
bf.Close(); !\g+8>
nCount++; Zc?ppO
} ox
;
GlobalFreePtr(lpData); B^^r\L9
if(nCount==1) K5"#~\D
m_Number.Format("%d picture captured.",nCount); )*:`':_a
else Dwl3Cj
m_Number.Format("%d pictures captured.",nCount); pBw0"ff
UpdateData(FALSE); S~Id5T:,
} lvp8z)G
]TaN{"
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) K!KMQr`
{ EKp@9\XBC
if(pMsg -> message == WM_KEYDOWN) \.g\Zib )
{ )>c>oMgl
if(pMsg -> wParam == VK_ESCAPE) lqb/eN9(t
return TRUE; IVW1]y
if(pMsg -> wParam == VK_RETURN) i.:. Y
return TRUE; ~i.k$XGA
} TFcT3]R[rL
return CDialog::PreTranslateMessage(pMsg); _$>pw<
} \8uIER5)
)+Oujt
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) U#1bp}y
{ 0T>H)c6:\
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ 3su78e t}
SaveBmp(); x1ztfJd
return FALSE; F!.E5<&7=
} |$7vI&m
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ CX m+)a-L
CMenu pop; m5Tr-w$QY
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); "5A&_E }3
CMenu*pMenu=pop.GetSubMenu(0); PH{_,X
pMenu->SetDefaultItem(ID_EXITICON); [ib P%xb
CPoint pt; %N#%|2B
GetCursorPos(&pt); b9XW9O`B
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); !|<=ZF2
if(id==ID_EXITICON) O3CFme
DeleteIcon(); =!Q7}z1QI
else if(id==ID_EXIT) > 0<)=
OnCancel(); CZbYAxNl
return FALSE; :EHJ\+kejX
} N&[D>G]>v
LRESULT res= CDialog::WindowProc(message, wParam, lParam); 7w1wr)qSB
if(message==WM_SYSCOMMAND&&wParam==SC_MINIMIZE) nW|wY.
AddIcon(); boo
}u
return res; {$ep7;'d
} gqWupL
o:6@Kw^
void CCaptureDlg::AddIcon() dZ _zg<
{ LbtX0^
NOTIFYICONDATA data; HD N9.5S
data.cbSize=sizeof(NOTIFYICONDATA); 07Edfe
CString tip; FaBqj1O1
tip.LoadString(IDS_ICONTIP); X<R?uI?L
data.hIcon=GetIcon(0); nbG/c80
data.hWnd=GetSafeHwnd(); @X3{x\i'I
strcpy(data.szTip,tip); D13Rx 6b
data.uCallbackMessage=IDM_SHELL; rcGb[=B f
data.uFlags=NIF_ICON|NIF_MESSAGE |NIF_TIP ; "}Me}S<
data.uID=98; .]
`f,^v<c
Shell_NotifyIcon(NIM_ADD,&data); 2c/Ys4/H4]
ShowWindow(SW_HIDE); y^;l*qq
bTray=TRUE; _f6HAGDN
} iX\W;V
ltFq/M
void CCaptureDlg::DeleteIcon() (8ht*b.5K
{ *SO{\bu
NOTIFYICONDATA data; ai*f
F
data.cbSize=sizeof(NOTIFYICONDATA); Ssk}e=]
data.hWnd=GetSafeHwnd(); u=YX9Mo!
data.uID=98; Qeu\&%C!<
Shell_NotifyIcon(NIM_DELETE,&data); ?h!i0Rsm
ShowWindow(SW_SHOW); }za[E>z
SetForegroundWindow(); '<0J@^vZ
ShowWindow(SW_SHOWNORMAL); I=;+n-
bTray=FALSE; lHZU iB
} ^GBe)~MT
,j 5&6X=1M
void CCaptureDlg::OnChange() l$hJE;n
{ S1U@UC
RegisterHotkey(); eh[_~>w
} we#wH-
a" H WGY
BOOL CCaptureDlg::RegisterHotkey() Skz|*n|eY
{ 76vy5R(.
UpdateData(); jLJ1u/l>;
UCHAR mask=0; Jxqh)l
UCHAR key=0; F]mgmYD%
if(m_bControl) $x6$*K(F
mask|=4; %AN/>\#p
if(m_bAlt) r&Ca"dI
mask|=2; ?X&6M;Zi
if(m_bShift) W>b(Om_%
mask|=1; `HuCT6O
key=Key_Table[m_Key.GetCurSel()]; eyp,y2Tz
if(bRegistered){ *.&