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:
/i${ [1
[-*1M4D9 一、实现方法
y$f{P:!"{3 d1"%sI 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:
3j]P\T eB$S d #pragma data_seg("shareddata")
d'4^c,d HHOOK hHook =NULL; //钩子句柄
:slVja$e
UINT nHookCount =0; //挂接的程序数目
_wC4n }J static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
H1alf_(_
\ static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
h]6"~ m static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
-jv%BJJlX static int KeyCount =0;
+EtL+Y(U static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
/ p_mFA]@ #pragma data_seg()
u0)~Im,X [M7& 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。
[HV>4,,3" 2Op\`Ht& 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:
mkR1iY sC/5N BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
?W#>9WQi cKey,UCHAR cMask)
u9.x31^ {
-W^jmwM BOOL bAdded=FALSE;
Zi0B$3iOb for(int index=0;index<MAX_KEY;index++){
:KJG3j?
if(hCallWnd[index]==0){
S-M|
6fv hCallWnd[index]=hWnd;
%(c5T)B9 HotKey[index]=cKey;
@bc=O1vX~; HotKeyMask[index]=cMask;
]7*Z'E bAdded=TRUE;
lO Rym:P KeyCount++;
L7_qs+ break;
qM."W=XVN }
dFu<h }
~s
:Ml return bAdded;
DQ<{FN }
8hTtBa //删除热键
qMk"i@" BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
`qNhB\ {
Ux<2!vh BOOL bRemoved=FALSE;
tAPr4n! for(int index=0;index<MAX_KEY;index++){
.3{PgrZ if(hCallWnd[index]==hWnd){
#~
:j< =o if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
PWwz<AI+ hCallWnd[index]=NULL;
]w3-No HotKey[index]=0;
5eZ8$-&([ HotKeyMask[index]=0;
DP(JsZ} bRemoved=TRUE;
!L+4YA KeyCount--;
#hA]r. break;
AE_7sM }
h\jV@g$ }
wTpjM@F?J| }
R::0.*FF return bRemoved;
/``4!jU }
*K{-J* nK@RFU6 u x[h\Tp DLL中的钩子函数如下:
rNdeD~\ B{#*PAK= LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
,9(=Iu-?1 {
EXdx$I=X BOOL bProcessed=FALSE;
/~,|zz if(HC_ACTION==nCode)
{HJzhIgCf {
( 1 L9K; if((lParam&0xc0000000)==0xc0000000){// 有键松开
cGevFlnh switch(wParam)
*r
b/BZX{ {
~f.fg@v`+v case VK_MENU:
B1EI'<S MaskBits&=~ALTBIT;
N W/RQ( break;
PRs[!EB6 case VK_CONTROL:
wkO8 MaskBits&=~CTRLBIT;
,?OV39h break;
igoXMsifT+ case VK_SHIFT:
BCw5.@HK* MaskBits&=~SHIFTBIT;
x1gf o!BN break;
n/
\{}9 default: //judge the key and send message
,qx;kJJ break;
9]ga\>v }
(8[et m for(int index=0;index<MAX_KEY;index++){
;*3OkNxa3 if(hCallWnd[index]==NULL)
?0v(_ v continue;
` )9nBZ if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
L(p{>Ykcc {
H`js1b1n SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
IfGmA.O bProcessed=TRUE;
6;LM1
_ }
l3d^V&Sk }
e?Pzhha }
F,t
,Ja else if((lParam&0xc000ffff)==1){ //有键按下
Fk:yj 4' switch(wParam)
%gF; A* {
'T(7EL3$} case VK_MENU:
!+&Rn\e%7 MaskBits|=ALTBIT;
b(hnou S break;
X~aD\%kC7 case VK_CONTROL:
[d(@lbV0 MaskBits|=CTRLBIT;
o\_@4hXf break;
IZ<d~ [y case VK_SHIFT:
U_/sY9gz( MaskBits|=SHIFTBIT;
.
6wyu7oK break;
$ekB+
t:cj default: //judge the key and send message
ZT
UaF4k j break;
MwoU>+XB }
QB<9Be@e for(int index=0;index<MAX_KEY;index++){
3GH@|id if(hCallWnd[index]==NULL)
wVI 1sR continue;
=hs
!t|(* if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
mSn> {
24ojjxz+ SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
"bO\Wt#Mf bProcessed=TRUE;
sh $mOy }
Z9:erKT }
dQ4VpR9|; }
%J*z!Fe8s if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
6} DGEHc1 for(int index=0;index<MAX_KEY;index++){
.'zXO if(hCallWnd[index]==NULL)
>s@*S9cj: continue;
pEc|h*p8 if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
8PWx>}XPt SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
?tWcx;h:> //lParam的意义可看MSDN中WM_KEYDOWN部分
<A"T_Rk }
7Z-'@m }
%SV5PO@ }
A!([k}@=j return CallNextHookEx( hHook, nCode, wParam, lParam );
;Up'+[Vj'C }
{-(}p+;z ZI'MfkEZ* 抓图程序是一个基于对话框的程序,它在建立对话框的时候调用前面的DLL,登记热键,因此需要将hook.lib添加到工程里,在程序里给出两个DLL函数的定义,也可以写个头文件,再包含进来以下代码:
MXSN
< }gk37_}X\I BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
3Un{Q~6h BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
d$>TC(E=t <kQ
5sG 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:
rJ
LlDKP-( }GIwYh/ LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
UL81x72O {
mv7><C if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
OnNWci|7 {
#~A (%a //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
m).S0 SaveBmp();
QvM+]pdR6 return FALSE;
(=v :@\r }
`
u# ' …… //其它处理及默认处理
p0 @,- }
tb^8jC Nm{\?
sFqLxSo_I 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。
cC{eu[ XW Ls8@@b,t2 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。
TO&ohATp "O{_LOJ 二、编程步骤
].W)eMC*c( wVSM\ 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";
z6~cm6 j .}.?b 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
p2]@yE7w m `"^d # 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;
ZLsfF
=/G %2 A-u 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;
M2K{{pGJ[& E5a1
7ra 5、 添加代码,编译运行程序。
q=NI}k i/ED_<_Vg 三、程序代码
0GUm~zi1 \8Mn[G9TL ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
@Q!Jzw#B #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
pGQP9r% #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
MAhJ>qe8
p #if _MSC_VER > 1000
n#jBqr&!M #pragma once
;7id![KI4 #endif // _MSC_VER > 1000
lHRs3+ #ifndef __AFXWIN_H__
grvm2`u #error include 'stdafx.h' before including this file for PCH
?gknJ: #endif
?xftr ( #include "resource.h" // main symbols
VrV
)qfG class CHookApp : public CWinApp
-^ )0c {
K gN=b public:
RrFq" CHookApp();
Rne#z2Ok // Overrides
8v$2*$ // ClassWizard generated virtual function overrides
XJx$HM&0M //{{AFX_VIRTUAL(CHookApp)
N?xZ]?T public:
)e#KL$B)v virtual BOOL InitInstance();
=?o, ' n0 virtual int ExitInstance();
$]V,H" //}}AFX_VIRTUAL
i!H)@4jX //{{AFX_MSG(CHookApp)
&|/@;EA$8 // NOTE - the ClassWizard will add and remove member functions here.
4o+SSS // DO NOT EDIT what you see in these blocks of generated code !
RJpH1XQ
j //}}AFX_MSG
O$Wi=5 DECLARE_MESSAGE_MAP()
T:v.]0l~ };
4@2<dw|*h LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
j7(sYo@x7 BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
`Aa}q(}k BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
kF%EJuu BOOL InitHotkey();
^!Y]l BOOL UnInit();
MQs!+Z"m> #endif
d:Y!!LV-@L UL9]LEGG
//////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
75@!j[QL< #include "stdafx.h"
cB$OkaG# #include "hook.h"
#'poDX? #include <windowsx.h>
]><K8N3Z #ifdef _DEBUG
oRf.34 #define new DEBUG_NEW
cyM9[X4rC #undef THIS_FILE
zD#$]?@ b static char THIS_FILE[] = __FILE__;
k|C~qe3E #endif
AcZ{B< #define MAX_KEY 100
}BF!!* #define CTRLBIT 0x04
dTV4 Q`Z #define ALTBIT 0x02
F$L2bgQR?' #define SHIFTBIT 0x01
1NHiW
v #pragma data_seg("shareddata")
&zuPt5G| HHOOK hHook =NULL;
j,DF' h UINT nHookCount =0;
#Hn<4g"AjM static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
<WXGDCj static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
H7`JqS static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
3,ihVVr&P static int KeyCount =0;
TLcev* static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
d#-scv}s5 #pragma data_seg()
:n#8/'%1 HINSTANCE hins;
#$5"&SM void VerifyWindow();
Vd+qi~kA BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
l*r8.qp //{{AFX_MSG_MAP(CHookApp)
:B^YK]. // NOTE - the ClassWizard will add and remove mapping macros here.
X;e=d+pw // DO NOT EDIT what you see in these blocks of generated code!
A-n@:` n~ //}}AFX_MSG_MAP
Mi>! END_MESSAGE_MAP()
ZmLA4< gxKL
yZO! CHookApp::CHookApp()
:Dt]sE_d {
'E\/H17 // TODO: add construction code here,
[Rj_p&'
// Place all significant initialization in InitInstance
'CQ~ZV5 }
iXoEdt) {GH0>
1& CHookApp theApp;
'99rXw LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
O/XG}G.x| {
d4ga6N3' BOOL bProcessed=FALSE;
9"W 3t] if(HC_ACTION==nCode)
}3825 {
|wxAdPe if((lParam&0xc0000000)==0xc0000000){// Key up
Abw=x4d(i switch(wParam)
`EXo =Dqc {
aru;yR case VK_MENU:
8O[br@h:5 MaskBits&=~ALTBIT;
1>c^-"#e^ break;
RJ\'"XQ case VK_CONTROL:
#&k`-@b5| MaskBits&=~CTRLBIT;
539fB, break;
jv;8Mm case VK_SHIFT:
7@W}>gnf MaskBits&=~SHIFTBIT;
Io;x~i09K break;
`4SwdW n default: //judge the key and send message
D'8xP %P break;
~=P#7l\o1 }
<r>1W~bp.q for(int index=0;index<MAX_KEY;index++){
WMw|lV r if(hCallWnd[index]==NULL)
C
vOH*K' continue;
A!^
d8#~. if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
+#RgHo?f {
=(==aP SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
|e QwI& bProcessed=TRUE;
KgH_-REN }
7Dt*++: }
o8B$6w:_ }
*'-[J 2 else if((lParam&0xc000ffff)==1){ //Key down
We`6# \Z X switch(wParam)
YigDrW {
E%b*MU case VK_MENU:
Y9}ga4 MaskBits|=ALTBIT;
$~ >/_<~ break;
1!S*z^LGl case VK_CONTROL:
;f!}vo<; MaskBits|=CTRLBIT;
(y^svXU}a break;
JBI> D1`" case VK_SHIFT:
^XgBkC~ MaskBits|=SHIFTBIT;
,I2x&Ys&. break;
"d; T1 default: //judge the key and send message
Hk 0RT%PK break;
{3* Ne / }
\H4$9lPk for(int index=0;index<MAX_KEY;index++)
EXbaijHQG {
F"^/R if(hCallWnd[index]==NULL)
)p`zN=t continue;
<~bvfA= if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
;%Zu[G`C {
?APCDZ^ SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
&SW~4 {n: bProcessed=TRUE;
pwg\b }
hnnVp_<] }
"Ng%"Nz }
oFi_
op if(!bProcessed){
[9C{\t for(int index=0;index<MAX_KEY;index++){
X|'[\v2ld if(hCallWnd[index]==NULL)
8U)*kmq continue;
.[:y`PCF if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
e9;5.m SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
j,79G^/YG }
Tr.u'b( }
mhgvN-? "h }
M,vCAZ return CallNextHookEx( hHook, nCode, wParam, lParam );
ZK4d;oa", }
#|QA_5 j a'_syn BOOL InitHotkey()
|/%X8\ {
S[e> 8 if(hHook!=NULL){
AQGl}%k_ nHookCount++;
nC}Y+_wo0 return TRUE;
>x*ef]aS }
r]deVd G else
l@ 5kw]6 hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
\gGTkH if(hHook!=NULL)
V
X.9mt nHookCount++;
Aj*|r
return (hHook!=NULL);
S@@#L }
UE-1p BOOL UnInit()
N (0%C? {
Y?V.O if(nHookCount>1){
X- j@#Qb nHookCount--;
Z_4|L+i<{ return TRUE;
avY<~-44B }
.naSK`J,` BOOL unhooked = UnhookWindowsHookEx(hHook);
{XH3zMk[ if(unhooked==TRUE){
J|u_45< nHookCount=0;
1oI2 hHook=NULL;
Z4dl'v)9 }
pwVaSnre` return unhooked;
39bw,lRPV }
@2~;)* M Al4g+es BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
Eih6?Lpu {
PU-L,]K BOOL bAdded=FALSE;
'3=@UBs for(int index=0;index<MAX_KEY;index++){
-
WQ)rz if(hCallWnd[index]==0){
zym6b@+jN hCallWnd[index]=hWnd;
g'NR\<6A HotKey[index]=cKey;
l\37/Z HotKeyMask[index]=cMask;
MxqIB(5k bAdded=TRUE;
y9~:[ jB KeyCount++;
@!*I
mNMI break;
0.&-1pw }
;!B,P-Z"g }
bb}Fu/S return bAdded;
_2WW0 }
A$n: <m> m"|G BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
!
u9LZ {
;( (|0Xa BOOL bRemoved=FALSE;
\s6VOR/ for(int index=0;index<MAX_KEY;index++){
*-&+;|mM if(hCallWnd[index]==hWnd){
L]E.TvM1* if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
oxug
hCallWnd[index]=NULL;
L|p+;ex HotKey[index]=0;
EUbyQL HotKeyMask[index]=0;
^@)*voP#G bRemoved=TRUE;
Y o\%53w/ KeyCount--;
/H$:Q|T} break;
A&V'WahC@I }
P} w0= }
2>g!+p Ox }
MaZVGrcC return bRemoved;
d
wku6lCk }
Q!(qb lL,0IfC, void VerifyWindow()
4'y@ne}g! {
1sq1{|NW~ for(int i=0;i<MAX_KEY;i++){
#&Rx?V if(hCallWnd
!=NULL){ Y+gNi_dE
if(!IsWindow(hCallWnd)){ W$J@|i
hCallWnd=NULL; h>A~yDT[
HotKey=0; sC_doh_M
HotKeyMask=0; /k KVIlO
KeyCount--; zh5ovA%
} F.AP)`6+*
} P:UR:y([
} x_- SAyH
} ywj'O
e41
~<"{u-q#K
BOOL CHookApp::InitInstance() 7*r!-$
{ 0GQKM~|H
AFX_MANAGE_STATE(AfxGetStaticModuleState()); _sQhD i
hins=AfxGetInstanceHandle(); or(P?Ro
InitHotkey(); qmtH0I7)
return CWinApp::InitInstance(); Y?%=6S
} 2]E i4%jo
$U'*}S
int CHookApp::ExitInstance() <m*j1|^{t
{ `We?j7O
VerifyWindow(); 6 )lWuY]e
UnInit(); 'OU`$K7n
return CWinApp::ExitInstance(); zor
} 6%MM)Vj+u
\q"vC1,9
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file SqVh\Nn
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) '/3\bvZ
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ _pkmHj(
#if _MSC_VER > 1000 A27!I+M
#pragma once 7)BK&kpVr
#endif // _MSC_VER > 1000 c1<jY~U
,uZz?7mO
class CCaptureDlg : public CDialog d~y]7h |
{ Y]Zp[!
// Construction UPkc-^BN
public: |21*p#>
BOOL bTray; W(EN01d \
BOOL bRegistered; wq]vcY9^
BOOL RegisterHotkey(); :M.]- +(
UCHAR cKey; vV>=Uvm
UCHAR cMask; I=;=;-
void DeleteIcon(); JykN EMB#
void AddIcon(); < Q6
UINT nCount; b<BkI""b
void SaveBmp(); GD4+f|1.*
CCaptureDlg(CWnd* pParent = NULL); // standard constructor 8COGe=+o
// Dialog Data >[<f\BN|
//{{AFX_DATA(CCaptureDlg) o`nJJ:Cxq-
enum { IDD = IDD_CAPTURE_DIALOG }; !!6g<S7)
CComboBox m_Key; H<
BOOL m_bControl; :`S\p[5
BOOL m_bAlt; 1_>w|6;e
BOOL m_bShift; 7|<-rjz^
CString m_Path; o),@I#fM
CString m_Number; kQ|phtbI
//}}AFX_DATA N`LY$U+N|
// ClassWizard generated virtual function overrides ooj^Z%9P
//{{AFX_VIRTUAL(CCaptureDlg) !(sL
public: G;]zX<2^3
virtual BOOL PreTranslateMessage(MSG* pMsg); 8<
"lEL|
protected: mzcxq:uZ5
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support nX<yB9bXDg
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); {?X9juc/#
//}}AFX_VIRTUAL ew,g'$drD
// Implementation _r`(P#Hy
protected: dZAb':
HICON m_hIcon; W 7w*VD|
// Generated message map functions iThf\
//{{AFX_MSG(CCaptureDlg) 3m"9q
virtual BOOL OnInitDialog(); /KhY,G'Z
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); x";4)u=
afx_msg void OnPaint(); u+ 8wBb5!
afx_msg HCURSOR OnQueryDragIcon(); 5yf`3vV|3@
virtual void OnCancel(); b7HT<$Wg
afx_msg void OnAbout(); uf`/-jY
afx_msg void OnBrowse(); wpOM~!9R
afx_msg void OnChange(); $HAwd6NI
//}}AFX_MSG W\O.[7JP
DECLARE_MESSAGE_MAP() 6G:7r [
}; ;JX2ebx
#endif $Q`\-
VW:Voc
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file >|hqt8lY
#include "stdafx.h" Agwl2AM5k
#include "Capture.h" Pk^V6-
#include "CaptureDlg.h" C+0BV~7J<<
#include <windowsx.h> c
#pragma comment(lib,"hook.lib") oSH]TL2@Cd
#ifdef _DEBUG 1t7T\~+F
#define new DEBUG_NEW UC!"1)~mt`
#undef THIS_FILE +Rq]_sDu
static char THIS_FILE[] = __FILE__; Sv[+~co<l
#endif Obc wmL
#define IDM_SHELL WM_USER+1 {mA#'75a#
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); M2M&L,/O
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); =64Ju Wvo
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; avd`7eH2
class CAboutDlg : public CDialog '3B7F5uLx"
{
Lp{/
public: on f7V
CAboutDlg(); ]"i^VVw
// Dialog Data #3YYE5cB
//{{AFX_DATA(CAboutDlg) S>R40T=e
enum { IDD = IDD_ABOUTBOX }; i7`/"5I
//}}AFX_DATA z"Wyf6H0T
// ClassWizard generated virtual function overrides ZU5; w
//{{AFX_VIRTUAL(CAboutDlg) 8[IR;gZf
protected: gO bP
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support 20 )8e!jP
//}}AFX_VIRTUAL "Wy!,RH
// Implementation TWU1@5?Ct
protected: Kj+TPqXb
//{{AFX_MSG(CAboutDlg) oi%IHX(`
//}}AFX_MSG ?IR+OCAA
DECLARE_MESSAGE_MAP() LHq*E`
}; t=n@<1d
'^BTa6W}m
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) _j]vR
{ sl*&.F,v=
//{{AFX_DATA_INIT(CAboutDlg) OmaG|2u
//}}AFX_DATA_INIT 4x" je
} R'aA\k-
bRx}ih
void CAboutDlg::DoDataExchange(CDataExchange* pDX) }SGb`l
{ CMYkxU
CDialog::DoDataExchange(pDX); `W %R
//{{AFX_DATA_MAP(CAboutDlg) 8b $e)
//}}AFX_DATA_MAP
1Pd2%
} l6T5]$
?8$h%Ov-
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) .7n`]S/
//{{AFX_MSG_MAP(CAboutDlg) P,7beHjf
// No message handlers $WbfRyXi7'
//}}AFX_MSG_MAP =]0AZ
END_MESSAGE_MAP() u@kr;^m
l8d }g
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) dhi9=Co;
: CDialog(CCaptureDlg::IDD, pParent) G V% @A
{ y{QF#&lW
//{{AFX_DATA_INIT(CCaptureDlg) }?Tz=hP
m_bControl = FALSE; A )xfO-
m_bAlt = FALSE; CoM?cS S
m_bShift = FALSE; 9j$ J}=y
m_Path = _T("c:\\"); s5oU
m_Number = _T("0 picture captured."); yu=(m~KX
nCount=0; Y NG S"3F
bRegistered=FALSE; D=~3N
bTray=FALSE; S{JBV@@tC
//}}AFX_DATA_INIT bYy7Ul6]
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 p;LF-R
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); :JzJ(q/
} ''B}^yKEW
@;{iCVW
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) Ryi%}!
{ ,/..f!bp
CDialog::DoDataExchange(pDX); sT>l ?L
//{{AFX_DATA_MAP(CCaptureDlg) v;IuB
DDX_Control(pDX, IDC_KEY, m_Key); Ai5D[ykX
DDX_Check(pDX, IDC_CONTROL, m_bControl); s@|TQ9e |j
DDX_Check(pDX, IDC_ALT, m_bAlt); HeM-
DDX_Check(pDX, IDC_SHIFT, m_bShift); 'dcO-A:>
DDX_Text(pDX, IDC_PATH, m_Path); {(^%2dk83C
DDX_Text(pDX, IDC_NUMBER, m_Number); |3 v+&eVi
//}}AFX_DATA_MAP 3NgyF[c
} +'9eo%3O
6g'+1%O
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) ]}BT'fky#
//{{AFX_MSG_MAP(CCaptureDlg) ~Q5
i0s%
ON_WM_SYSCOMMAND() jR{Rd}QtQ
ON_WM_PAINT() E7|P\^}m(f
ON_WM_QUERYDRAGICON() RU,!F99'1
ON_BN_CLICKED(ID_ABOUT, OnAbout) )5ISkbsxD
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) usI$
ON_BN_CLICKED(ID_CHANGE, OnChange) ~)iQbLI
//}}AFX_MSG_MAP 2-gI@8NPI
END_MESSAGE_MAP() TRQH{O\O
&y.6Hiy&
BOOL CCaptureDlg::OnInitDialog() )[5 .*g@
{ J.n-4J#@
CDialog::OnInitDialog(); i
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ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); G0v<`/|>}
ASSERT(IDM_ABOUTBOX < 0xF000); go5l<:9
CMenu* pSysMenu = GetSystemMenu(FALSE); BY??X=
if (pSysMenu != NULL) n;*W#c
{ 3+iQct[
CString strAboutMenu; s
F3M= uz
strAboutMenu.LoadString(IDS_ABOUTBOX); w-?Cg8bq<
if (!strAboutMenu.IsEmpty()) x-@6U
{ aKC3vR0
pSysMenu->AppendMenu(MF_SEPARATOR); +zSdP2s
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); 6#1:2ZHKG
} jW_FaPW(p
} `rI[
SetIcon(m_hIcon, TRUE); // Set big icon XnV$}T:?X
SetIcon(m_hIcon, FALSE); // Set small icon nWv6I&
m_Key.SetCurSel(0); M7SVD[7~HM
RegisterHotkey(); uzWz+atH
CMenu* pMenu=GetSystemMenu(FALSE); G>0hi1
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); [USE&_RN
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); o'p[G]NQ1o
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); &!O~ f
return TRUE; // return TRUE unless you set the focus to a control !7aJfs2
} \UBQ:+3
'@eH)wh@m)
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) Y(P<9m:
{ T'e
p&tNY
if ((nID & 0xFFF0) == IDM_ABOUTBOX) KVCj06}j
{ ?\![W5uuXG
CAboutDlg dlgAbout; GYNLyd)
dlgAbout.DoModal(); ?$AWY\
} ~[4zm$R^
else g=x1}nm
{ [;hCwj#
CDialog::OnSysCommand(nID, lParam); o:Q.XWa@MG
} {-)*.l=
} PU^@BZ_m
rgXD>yu(
void CCaptureDlg::OnPaint() n ^_B0Rkv
{ [49Ae2W`
if (IsIconic()) ~F=,)GE
{ vP{;'R
CPaintDC dc(this); // device context for painting P0XVR_TJf
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); b#E!wMClS
// Center icon in client rectangle 1PjqXgN5p
int cxIcon = GetSystemMetrics(SM_CXICON); Blnc y
int cyIcon = GetSystemMetrics(SM_CYICON); uQtwh08i
CRect rect; mY,t]#^m7
GetClientRect(&rect); #~`]eM5`J
int x = (rect.Width() - cxIcon + 1) / 2; keL!;q|r-)
int y = (rect.Height() - cyIcon + 1) / 2; ?tFsSU
// Draw the icon .q9wyVi7GI
dc.DrawIcon(x, y, m_hIcon); ~Y'j8W
} YR}By;Bq
else 5WG:m'$$
{ 9V( esveq
CDialog::OnPaint(); ?br 4 wl
} YUsMq3^&
} m kHcGB!~
3Mt Alc0xp
HCURSOR CCaptureDlg::OnQueryDragIcon() x$Tf IFy
{ =
~^
return (HCURSOR) m_hIcon; MJ0UZxnl
} 5 ]v]^Y'?
;m cu(J
void CCaptureDlg::OnCancel() u#`FkuE\}
{ %e'Z.vm
if(bTray) , 1`-u$
DeleteIcon(); 2%(RB4+
CDialog::OnCancel(); *oU-V#
} '`fz|.|cbB
^NPbD<~Lb
void CCaptureDlg::OnAbout() d65t"U
{ y OLqIvN
CAboutDlg dlg;
KL\]1YX
dlg.DoModal(); q^k]e{PD
} @ME
.
Z-B b,8
void CCaptureDlg::OnBrowse() K{x FhdW
{ ~^R?H S
CString str; U?d4 ^
BROWSEINFO bi; Y94/tjt
char name[MAX_PATH]; -*r]9f6x
ZeroMemory(&bi,sizeof(BROWSEINFO)); .a *^6TC.
bi.hwndOwner=GetSafeHwnd(); j}$Up7pW
bi.pszDisplayName=name; wz(D
}N5
bi.lpszTitle="Select folder"; ~M4@hG!
bi.ulFlags=BIF_RETURNONLYFSDIRS; uepL"%.@7|
LPITEMIDLIST idl=SHBrowseForFolder(&bi); ]h6mJ{k
if(idl==NULL) a4L0Itrp
return; p3YF
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); czv )D\*
str.ReleaseBuffer(); ^#A[cY2eM
m_Path=str; *b
>hZkObn
if(str.GetAt(str.GetLength()-1)!='\\') r9d dVD
m_Path+="\\"; t@O4!mFH
UpdateData(FALSE); 9M$N>[og
} f8'$Mn,
$ZOKB9QccC
void CCaptureDlg::SaveBmp() (66DKG
{ 1KtPq,
CDC dc; (ATCP#lF
dc.CreateDC("DISPLAY",NULL,NULL,NULL); U
DC>iHt
CBitmap bm; mC}!;`$8p
int Width=GetSystemMetrics(SM_CXSCREEN); >7^+ag~&
int Height=GetSystemMetrics(SM_CYSCREEN); r!7e:p JLO
bm.CreateCompatibleBitmap(&dc,Width,Height); /NDuAjp[@
CDC tdc; G]- wN7G
tdc.CreateCompatibleDC(&dc); MlM2(/ok
CBitmap*pOld=tdc.SelectObject(&bm); f;"6I
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); 4fCg{
tdc.SelectObject(pOld); -=A W. Zo
BITMAP btm; X&qa3C})
bm.GetBitmap(&btm); a|v}L,
DWORD size=btm.bmWidthBytes*btm.bmHeight; }lzQMT
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); K9J"Q4pEC
BITMAPINFOHEADER bih;
j{;RuNt
bih.biBitCount=btm.bmBitsPixel; 6Q6l?!|W4
bih.biClrImportant=0; M"t=0[0DM:
bih.biClrUsed=0; yU@~UCmja
bih.biCompression=0; ?$T39U^
bih.biHeight=btm.bmHeight; 96.z\[0VZ
bih.biPlanes=1; <.h\%&'U
bih.biSize=sizeof(BITMAPINFOHEADER); i;Y@>-[e<
bih.biSizeImage=size; j_r7oARL
bih.biWidth=btm.bmWidth; 7q] @Jx9
bih.biXPelsPerMeter=0; QFfKEMN
bih.biYPelsPerMeter=0; X}5aE4K/
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); d$G<g78D
static int filecount=0; @}e'(ju%R
CString name; DB>Y#2j4h
name.Format("pict%04d.bmp",filecount++); {&Bpf
K;`)
name=m_Path+name; ;\$P;-VY
BITMAPFILEHEADER bfh; ,OQ!lI_`R
bfh.bfReserved1=bfh.bfReserved2=0; Q:x:k+O-
bfh.bfType=((WORD)('M'<< 8)|'B'); ~BVK6
bfh.bfSize=54+size; h!*++Y?&0
bfh.bfOffBits=54; WSY&\8
CFile bf; yT>t[t60/S
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ Q l$t
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); r12{XW?~
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); f~.w2Cna
bf.WriteHuge(lpData,size); /~LXY<-(
bf.Close(); ecH-JPm'
nCount++; ClH aR
} H<SL=mb;
GlobalFreePtr(lpData); p]zYj >e
if(nCount==1) 47iwb
m_Number.Format("%d picture captured.",nCount); #dLp<l)
else Qw$"W/&X
m_Number.Format("%d pictures captured.",nCount); r $du-U
UpdateData(FALSE); FBGHVV
w!
} !7g
E
`FImi9%F
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) e<>Lr
{ jj)9jUz
if(pMsg -> message == WM_KEYDOWN) O^]I>A#d
{
,qRSB>5c
if(pMsg -> wParam == VK_ESCAPE) 3"gifE
return TRUE; )r2$/QF9
if(pMsg -> wParam == VK_RETURN) _e.b#{=9
return TRUE; (jD..qMs#
} T$]2U>=<J
return CDialog::PreTranslateMessage(pMsg); /p
[l(H
} 8j,_
f/b }X3K
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
:*M\z3`k
{ ;UgRm#
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ L-d8bA
SaveBmp(); c=2e?
return FALSE; $p4aNC
} {zGIQG9
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ OvPy+I
CMenu pop; sQ^>.yG
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); Y\T*8\h_[
CMenu*pMenu=pop.GetSubMenu(0); rI}E2J
pMenu->SetDefaultItem(ID_EXITICON); ~zz |U!TG
CPoint pt; &bJ98Nxl
GetCursorPos(&pt); k~Pm.@,3o
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); !v2,lH
if(id==ID_EXITICON) l\^q7cXG
DeleteIcon(); LeW.uh3.
else if(id==ID_EXIT) qD\%8l.]Z
OnCancel(); (nrrzOax
return FALSE; AEwb'
} 4(4JQ(5
LRESULT res= CDialog::WindowProc(message, wParam, lParam); =tcPYYD
if(message==WM_SYSCOMMAND&&wParam==SC_MINIMIZE) F$ .j|C1a
AddIcon(); $UjSP
return res; 2LYd
# !i
} yT&