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:
Sd IX-k.
Fv?=Z-wk 一、实现方法
j%<}jw[2 6AN)vs} 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:
yBLUNIr }<MR`h1 #pragma data_seg("shareddata")
+:6Ii9GN HHOOK hHook =NULL; //钩子句柄
&X`u9 V UINT nHookCount =0; //挂接的程序数目
5j"1z1_& static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
6@tvRDeaDW static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
Ni*Wz*o static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
IfDx@ ?OB static int KeyCount =0;
4c~>ci,N?( static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
Bn]K+h\E #pragma data_seg()
5/m$)wE Uz%Z&K 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。
$R8w+ Id ^TXf sQs DLL中的两个输出函数分别用来添加/删除热键,函数代码如下:
-Uo?WXP]B' o@lWBfB*%e BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
5 waw`F cKey,UCHAR cMask)
,]Zp+>{
{
}8'&r(cN4 BOOL bAdded=FALSE;
>+cVs: for(int index=0;index<MAX_KEY;index++){
<Wl(9$ if(hCallWnd[index]==0){
^_p%Yv hCallWnd[index]=hWnd;
d0er^ ~ HotKey[index]=cKey;
%u p}p/? HotKeyMask[index]=cMask;
__p_8P bAdded=TRUE;
V'Qn sI KeyCount++;
$e\N+~KNCy break;
%@ mGK8 }
kvsA]tK. }
#
Oup^ o@ return bAdded;
AyE\fY5 }
`PI(%N //删除热键
XeUC0K[D BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
TUp%FJXA| {
3Rl,GWK BOOL bRemoved=FALSE;
Q
|i9aE for(int index=0;index<MAX_KEY;index++){
Q"J-tP! if(hCallWnd[index]==hWnd){
KA]*ox6j; if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
yno(' 1B@ hCallWnd[index]=NULL;
E@QA". HotKey[index]=0;
6k])Kl J2; HotKeyMask[index]=0;
4ax|Vb)D bRemoved=TRUE;
TbE:||r?^ KeyCount--;
w,.qCp T$_ break;
ySdN;d:q }
#Gv{UU$] }
fW0$s` }
wpPn}[a return bRemoved;
83]PA<R }
'bW5Fr>W ]]iO- } qFRdg V>8 DLL中的钩子函数如下:
96|[}:+$&: y@vj;3: LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
2%rLoL$Y2+ {
j033%p+Xc BOOL bProcessed=FALSE;
B(HT.%r^A if(HC_ACTION==nCode)
<"&'>?8j {
BQgoVnQo_c if((lParam&0xc0000000)==0xc0000000){// 有键松开
oJ;rc{n- switch(wParam)
0.(<'!"y {
7h<> k*E) case VK_MENU:
T|'&K:[TJ MaskBits&=~ALTBIT;
&d$~6'x* break;
"-i#BjZl/ case VK_CONTROL:
yFIIX=NC MaskBits&=~CTRLBIT;
5vZ#b\;#V break;
EO"C8z'al case VK_SHIFT:
p6 xPheD MaskBits&=~SHIFTBIT;
?F$6;N6x break;
BD;H
default: //judge the key and send message
/NBTvTI break;
H 30OUrD }
@Jv# fr for(int index=0;index<MAX_KEY;index++){
#V 43= if(hCallWnd[index]==NULL)
gT1P*N;v continue;
Q .RO if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
jMpa?Jp 1 {
SN]LeXesS SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
#1Z7R/ bProcessed=TRUE;
-l*A }
`<vxG4=62\ }
we]>(| }
o42`z>~ else if((lParam&0xc000ffff)==1){ //有键按下
H7IW"UkBR switch(wParam)
{7#03 k {
x*8O*!ZZ case VK_MENU:
h
W.2p+ MaskBits|=ALTBIT;
C|e+0aW break;
`1'5j "v case VK_CONTROL:
Lar r}o= MaskBits|=CTRLBIT;
^Vo"fI`=C break;
12gw#J/)9h case VK_SHIFT:
W,N L*($^ MaskBits|=SHIFTBIT;
emWGIo break;
q.oLmX default: //judge the key and send message
@FX{M.. break;
@phN|;? }
pieT'mA for(int index=0;index<MAX_KEY;index++){
L$JI43HZ if(hCallWnd[index]==NULL)
.9 kyrlm continue;
Ph)|j&] if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
6v47 QW|' {
O-GxUHwWr SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
__)qw# bProcessed=TRUE;
nm):SEkC }
YOw?'+8 }
:EB,{|m }
"3y} F if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
k,_i#9X for(int index=0;index<MAX_KEY;index++){
`jW4H$D if(hCallWnd[index]==NULL)
:WX0,-Gn continue;
!C`20,U if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
+i)AS0?d SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
nPf'ee //lParam的意义可看MSDN中WM_KEYDOWN部分
,f<B}O }
euZ(}+N& }
?`. XK} }
zD_HyGf return CallNextHookEx( hHook, nCode, wParam, lParam );
=~,l4g\ }
n6cq\@~A 5faj;I{%JY 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:
ZLJNw0!=|t pG28M]\ BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
JK^[{1
JI BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
Kq7C0)23 22vq=RO7Z 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:
4K,''7N3 #WEq-0L LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
qy9i9$8 {
tR O IBq| if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
SsRVd^=;x {
JN^bo(kb //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
k /^g* SaveBmp();
j |td,82. return FALSE;
5B|,S1b }
\3j)>u,r …… //其它处理及默认处理
3Uo]>BG }
jZ#UUnR% #Q+R%p[D 0x#E4v(UA 将屏幕图像保存到BMP文件中的任务是由函数SaveBmp()来完成的,具体实现参见代码部分。另外为了顺利实现屏幕抓图,程序中还实现了"托盘"功能,由于这一部分本书在实例中已经专门介绍过了,所以不再赘述,读者朋友可以参考相关实例。
5mIXyg 0: \\s?B K 最后需要提醒读者朋友们注意的是,源程序的编译与使用时要先编译hook.dll并将其放在系统目录(win2000/NT是system32,98/ME是system),然后编译对话框程序运行即可。
vzy!3Hiw @YB85p"]J. 二、编程步骤
R-C5*$ `,m7xJZ?y 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";
E0jUewG ; +9(; 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
EE9vk*[@C K P6PQgc 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;
LaT8l?q q v>:=w|.HC 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;
?%;B`2 nDR L5C2ng> 5、 添加代码,编译运行程序。
&CO|Y(+ }{=8&gA0 三、程序代码
` U#Po_hq WVkG2 ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
%^U"Spv; #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
"uS7PplyO #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
I4ctxMVP #if _MSC_VER > 1000
3.~h6r5- #pragma once
*#GDi'0 #endif // _MSC_VER > 1000
?&\h;11T #ifndef __AFXWIN_H__
&q L<C #error include 'stdafx.h' before including this file for PCH
#'iPDRYy #endif
L6 kZ2-6 #include "resource.h" // main symbols
@ AggznA8 class CHookApp : public CWinApp
O(Td:Zdp {
'2xcce# public:
<vLdBfw&N CHookApp();
i :EO(` // Overrides
/Mx.:.A&$ // ClassWizard generated virtual function overrides
kU(kU2u%9 //{{AFX_VIRTUAL(CHookApp)
#!1IP~ public:
Yg|"- virtual BOOL InitInstance();
BDp:9yau virtual int ExitInstance();
AtT"RG-6 //}}AFX_VIRTUAL
9nO(xJ"e4 //{{AFX_MSG(CHookApp)
7y>(H<^> // NOTE - the ClassWizard will add and remove member functions here.
pMDH // DO NOT EDIT what you see in these blocks of generated code !
$>(9~Yh0 //}}AFX_MSG
G V=OKf# DECLARE_MESSAGE_MAP()
Md?acWE*L };
/khnl9~+ LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
u YabJqV BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
?4MSgu BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
HoV{U zm BOOL InitHotkey();
ysl8LK
BOOL UnInit();
{9Xm<}%u]] #endif
gu!](yEgl o[n<M>@ //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
qr9Imr0w< #include "stdafx.h"
!^]q0x #include "hook.h"
b.@H1L #include <windowsx.h>
F/xCG nP- #ifdef _DEBUG
u(8~4P0w #define new DEBUG_NEW
F6DxvyANr #undef THIS_FILE
YV4
:8At1 static char THIS_FILE[] = __FILE__;
MN\i-vAL8 #endif
EZ*t$3.T #define MAX_KEY 100
Dl&PL #define CTRLBIT 0x04
4 *H(sq #define ALTBIT 0x02
tr5'dX4] #define SHIFTBIT 0x01
+*: }p #pragma data_seg("shareddata")
S;>4i!Mb
^ HHOOK hHook =NULL;
Mc!2mE%47m UINT nHookCount =0;
),MU+*` static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
9n-T5WP static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
t z"5+uuu static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
(;C$gnr.C static int KeyCount =0;
)G^p1o;\ static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
'1Y<RD>x #pragma data_seg()
T<XfZZ)l<` HINSTANCE hins;
P:>'
void VerifyWindow();
(y 3~[ BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
xSx&79Ez<* //{{AFX_MSG_MAP(CHookApp)
Z4\tY^NI // NOTE - the ClassWizard will add and remove mapping macros here.
J-b~4 // DO NOT EDIT what you see in these blocks of generated code!
u/;_?zI //}}AFX_MSG_MAP
2 aew6~ END_MESSAGE_MAP()
`!<x"xKu 2.!1kije CHookApp::CHookApp()
^4RO {
~d&'Lp[3 // TODO: add construction code here,
Tm%WWbc // Place all significant initialization in InitInstance
aD?# , }
Z(l9>A7! %Fs*#S CHookApp theApp;
K?$9N}+ LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
AL(n*, {
i[o&z$JO BOOL bProcessed=FALSE;
-<]\l3E&J if(HC_ACTION==nCode)
Av@&hD\ {
;tXB46 if((lParam&0xc0000000)==0xc0000000){// Key up
>c}:
switch(wParam)
q|R+x7x {
zoR,RBU6 case VK_MENU:
$xLEA\s MaskBits&=~ALTBIT;
x`Vy<h 33 break;
4u@yJ?U case VK_CONTROL:
<zfO1~^ MaskBits&=~CTRLBIT;
=VCi8jDkP break;
/]pX8
d case VK_SHIFT:
Dp%5$wF)8
MaskBits&=~SHIFTBIT;
W]} #\\$z break;
+[>yO _} default: //judge the key and send message
jG
=(w4+ break;
A1mYkG)l }
f&=K]:WDe for(int index=0;index<MAX_KEY;index++){
@gs26jX~2} if(hCallWnd[index]==NULL)
FP.(E9 continue;
<GSQ2bX[ if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
H<v c\r {
|*lH9lWJ SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
A$%@fO.b bProcessed=TRUE;
Q~x*bMb. }
j@%K*Gb` }
>|v=Ba6R0 }
p
Z0= else if((lParam&0xc000ffff)==1){ //Key down
eL>K2Jxq switch(wParam)
Z'voCWCd {
5Xp$yX = case VK_MENU:
8W(<q|t MaskBits|=ALTBIT;
w g$D@E7 break;
ac2}3$u case VK_CONTROL:
N;e;4,_ n MaskBits|=CTRLBIT;
rdORNlK& break;
-OHvK0~ case VK_SHIFT:
pI'8>_o MaskBits|=SHIFTBIT;
_K
4eD. break;
$ijx#a&O default: //judge the key and send message
8yY"x
[' break;
71K\.[ =- }
Q,[rrG;?@ for(int index=0;index<MAX_KEY;index++)
}~7H2d);- {
R
tXF if(hCallWnd[index]==NULL)
}T?i%l continue;
>:3xi{ if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
Ej;Vr~Wi {
##SLwrg SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
*5ka.=Qs bProcessed=TRUE;
@C!JtgO% }
Se!gs> }
( 1QdZD| }
c.|sW2/ if(!bProcessed){
8Uj68Jl? for(int index=0;index<MAX_KEY;index++){
{LR#(q$1 if(hCallWnd[index]==NULL)
6|B a continue;
>qSO,$ if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
$M:4\E5( SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
[V!^\g\6 }
)_Z]=5Ds }
ui s:\Uc }
T=hm#] return CallNextHookEx( hHook, nCode, wParam, lParam );
7H8GkuO }
O^QR;<t' &6|6J1c8 BOOL InitHotkey()
\#h})` {
O+CF/ipX/ if(hHook!=NULL){
jldcvW nHookCount++;
gJWlWVeq$ return TRUE;
Mqrt-VPh }
` 4s#5g else
GV `idFd hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
&-EyM*:u! if(hHook!=NULL)
z{ Zimr nHookCount++;
!?tu!
M<1? return (hHook!=NULL);
O3slabE# }
Yke<Wy1 BOOL UnInit()
e8WPV {
+lY\r + ; if(nHookCount>1){
:Su 5 nHookCount--;
hr/xpQW return TRUE;
mI_ 6f~ }
B1 jH.( BOOL unhooked = UnhookWindowsHookEx(hHook);
+iZ@.LI if(unhooked==TRUE){
UgOGBj,&5W nHookCount=0;
pn ~/!y hHook=NULL;
jk WBw.( }
RU3_Fso return unhooked;
&;uGIk>s }
baO&n ;iwD/=Y BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
LN,$P {
}RC.Q`b BOOL bAdded=FALSE;
4nVO.Ud0$X for(int index=0;index<MAX_KEY;index++){
(o6A?37i if(hCallWnd[index]==0){
K4K3<Pg hCallWnd[index]=hWnd;
-7C=- \]
HotKey[index]=cKey;
(AyRs7Dkn HotKeyMask[index]=cMask;
hs -}:^S` bAdded=TRUE;
#U6/@l) KeyCount++;
/_ hfjCE break;
g:@Cg.q8 }
|zr)hC
}
IArpCF/"8 return bAdded;
O(c4iWm }
{<Xo,U7y {kY`X[fvZ BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
!T&u2=`D {
_3FMQY( BOOL bRemoved=FALSE;
p!rGPyGC for(int index=0;index<MAX_KEY;index++){
Q
xj|lr if(hCallWnd[index]==hWnd){
6i?kkULBS if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
52q!zx E hCallWnd[index]=NULL;
B4M'Er{v HotKey[index]=0;
DI"dY
ug# HotKeyMask[index]=0;
4F 6ju6w bRemoved=TRUE;
/M{)k_V KeyCount--;
7\Yq]:;O break;
&`\kb2uep }
;Kq<',u~ }
n=#[Mi $Y }
<iY 9cV|}3 return bRemoved;
@/ovdf{ }
#q^>qX
y sov62wuqU void VerifyWindow()
,M9hb<:m {
G1n>@Y'j'' for(int i=0;i<MAX_KEY;i++){
g'l7Jr3 if(hCallWnd
!=NULL){ Q%b46"
if(!IsWindow(hCallWnd)){ vp9E}ga
hCallWnd=NULL; 'E4(!H,k
HotKey=0; N]<~NG:6b
HotKeyMask=0; F0o18k_"
KeyCount--; k%bTs+]*
} (HP={MrV
} "p_[A
} 5"Xo R)
} 9BgQoK@
rqG6Ll`=+
BOOL CHookApp::InitInstance() k+>p!1
{ U]R|ej
AFX_MANAGE_STATE(AfxGetStaticModuleState());
_ jM6ej<
hins=AfxGetInstanceHandle(); fSb@7L
InitHotkey(); K`AW?p^$Y
return CWinApp::InitInstance(); ^,\se9=(
} H"Em|LX^
0^tJX1L
int CHookApp::ExitInstance() I?xhak1)lu
{ ^LAS9K1.
VerifyWindow(); BRQ5
UnInit(); )F9V=PJE
return CWinApp::ExitInstance(); uma9yIk
} F\$}8,9
C8%nBa/
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file $F==n4)
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) s 13 d*
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ rH9|JEz
#if _MSC_VER > 1000 ,1 9" [:WN
#pragma once Q!$kUcky9
#endif // _MSC_VER > 1000 q?b)zeJ
QH56tQq
class CCaptureDlg : public CDialog VE+p&0
{ xdSj+507
// Construction iOA3x 8J
public: ,jdKcWy'
BOOL bTray; bgx5{!A
BOOL bRegistered; _M[[o5{
BOOL RegisterHotkey(); (>/Dw|,m
UCHAR cKey; r;s3(@[,@
UCHAR cMask; ~o\]K
void DeleteIcon(); ]&%X(jWyn
void AddIcon(); pz z`4VS:
UINT nCount; Tr+Y@]"
void SaveBmp(); FV<^q|K/(]
CCaptureDlg(CWnd* pParent = NULL); // standard constructor l[OQo|_
// Dialog Data k1
txY
//{{AFX_DATA(CCaptureDlg) i2 Iu2
enum { IDD = IDD_CAPTURE_DIALOG }; sZ(Q4)r
CComboBox m_Key; ?_`P;}4#
BOOL m_bControl; MDXQj5s^
BOOL m_bAlt; ` G/QJH{I
BOOL m_bShift; t3kh]2t
CString m_Path; |x~ei_x7.p
CString m_Number; @;-Un/'C;7
//}}AFX_DATA b+fy&rk@-
// ClassWizard generated virtual function overrides r_2VExk
//{{AFX_VIRTUAL(CCaptureDlg) ~8qFM
public: 7.=s1~p
virtual BOOL PreTranslateMessage(MSG* pMsg); "B{xC}Tw
protected: P)
0=@{(
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support (:hmp"S
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); KLM^O$=
//}}AFX_VIRTUAL I2!&=" 7@
// Implementation pPqbD}p
protected: RyIaT
HICON m_hIcon; ;Z0cD*Jb
// Generated message map functions j-\^
}K.&
//{{AFX_MSG(CCaptureDlg) +=F);;!
virtual BOOL OnInitDialog(); +/ d8d
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); E~U|v'GCd
afx_msg void OnPaint(); ZtZV:re=
afx_msg HCURSOR OnQueryDragIcon(); a[OLS+zf!P
virtual void OnCancel(); A&|(%
afx_msg void OnAbout(); m_W.r+s~C4
afx_msg void OnBrowse(); uTFEI.N
afx_msg void OnChange(); vVRCM
//}}AFX_MSG K>E!W!-PJ
DECLARE_MESSAGE_MAP() J};,%q_
}; ;R>42
qYF
#endif T%xL=STJNy
#SOj4W
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file bSKV|z/x
#include "stdafx.h" M;@03 x W
#include "Capture.h" yH0ZSv
#include "CaptureDlg.h" 'g,
x}6
#include <windowsx.h> ]$%4;o4O
#pragma comment(lib,"hook.lib") E8V\J
#ifdef _DEBUG FKTP0e7=9
#define new DEBUG_NEW $zH0$aOx
#undef THIS_FILE 2G*#Czr"
static char THIS_FILE[] = __FILE__; `e:RZ
#endif UmMYe4LQR
#define IDM_SHELL WM_USER+1 |UiykQ
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); z+`)|c4-
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); [\y>&"uk
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; >TVd*S
class CAboutDlg : public CDialog Ho*RLVI0U
{ n/|`Dz.
public: =Qq^=3@h
CAboutDlg(); N`:bvr
// Dialog Data `'t;BXedz/
//{{AFX_DATA(CAboutDlg) <OFqUp*l
enum { IDD = IDD_ABOUTBOX }; 23?0'AU
//}}AFX_DATA PW\FcT
// ClassWizard generated virtual function overrides V)?g4M3}
//{{AFX_VIRTUAL(CAboutDlg) i(#c
Yb
protected: rm;"98~zJ?
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support , X+(wp
//}}AFX_VIRTUAL ed2&9E>9b
// Implementation x@l~*6!K
protected: |Y8o+O_`
//{{AFX_MSG(CAboutDlg) +m},c-,=$w
//}}AFX_MSG >dH*FZ:c
DECLARE_MESSAGE_MAP() Uv$u\D+@[
}; Oc3%pb;
FK('E3PG
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) tAn6pGp
{ AMiFsgBj
//{{AFX_DATA_INIT(CAboutDlg) QxL
FN(d
//}}AFX_DATA_INIT =C}<0<"iF
} lBC-G*#
&xT~;R^
void CAboutDlg::DoDataExchange(CDataExchange* pDX) '.v^seU
{ *g}&&$b0
CDialog::DoDataExchange(pDX); XsMphZnK
//{{AFX_DATA_MAP(CAboutDlg) b,sc
//}}AFX_DATA_MAP )x s,
} j ZafwBi
7l
EwQ
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) 55en
D
//{{AFX_MSG_MAP(CAboutDlg) =&xoyF
// No message handlers <08 V-
//}}AFX_MSG_MAP =f|a?j,f~
END_MESSAGE_MAP() <;"=ah7A
cC]1D*Bn
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) LxDhthZi_
: CDialog(CCaptureDlg::IDD, pParent) %P6!vx:&^b
{ N*-Z Jv
//{{AFX_DATA_INIT(CCaptureDlg) +5\\wGo<
m_bControl = FALSE; ,_-*/- 7;8
m_bAlt = FALSE; d8I:F9
m_bShift = FALSE; bME3" e{O
m_Path = _T("c:\\"); w#b2iE+Bw
m_Number = _T("0 picture captured."); }e @-[RJ!
nCount=0; `v
er "s;
bRegistered=FALSE; 9D21e(7X
bTray=FALSE; qa?y lR"kA
//}}AFX_DATA_INIT pdu
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 w\4m-Z{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); p+?WhxG)
} dkC / ?R
F4{<;4N0
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) pP&M]'
{ ^a5>`W
CDialog::DoDataExchange(pDX); a"4 6_>
//{{AFX_DATA_MAP(CCaptureDlg) z#/*LP#oY
DDX_Control(pDX, IDC_KEY, m_Key); c^k.
<EA
DDX_Check(pDX, IDC_CONTROL, m_bControl); -qF| Y
f
DDX_Check(pDX, IDC_ALT, m_bAlt); rpWy 6oD
DDX_Check(pDX, IDC_SHIFT, m_bShift); #+\G-
=-
DDX_Text(pDX, IDC_PATH, m_Path); b>EUa> h
DDX_Text(pDX, IDC_NUMBER, m_Number); /ep~/#Ia
//}}AFX_DATA_MAP ?8/h3xV;
} ]vErF=[U,
';F][x 5j
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) 1>{(dd?L
//{{AFX_MSG_MAP(CCaptureDlg) ) P])0Y-
ON_WM_SYSCOMMAND() {D#`+uw
ON_WM_PAINT() xx8na8
ON_WM_QUERYDRAGICON() (v}:
ON_BN_CLICKED(ID_ABOUT, OnAbout) YJ$
=`lIM
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) kRPg^Fw"Vw
ON_BN_CLICKED(ID_CHANGE, OnChange) >AJ|F)
//}}AFX_MSG_MAP @9a=D<'>
END_MESSAGE_MAP() s,x]zG"
eW%jDsC
BOOL CCaptureDlg::OnInitDialog() RdHR[Usm
{ Tkf !Y?
CDialog::OnInitDialog(); yL-L2
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); X;tk\Ixd
ASSERT(IDM_ABOUTBOX < 0xF000); E
.5xzY
CMenu* pSysMenu = GetSystemMenu(FALSE); }fZBP]<I(
if (pSysMenu != NULL) VCO/s9AL
{ - %|I
CString strAboutMenu; <i-RF-*S
strAboutMenu.LoadString(IDS_ABOUTBOX); l<?wB|1'
if (!strAboutMenu.IsEmpty()) N%+M+zEJ
{ <Z;BB)I&C`
pSysMenu->AppendMenu(MF_SEPARATOR); 70eN]OY
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); :Ib\v88WIv
} %|>i2
} `314.a6S
SetIcon(m_hIcon, TRUE); // Set big icon ,~#hHhR_
SetIcon(m_hIcon, FALSE); // Set small icon EK_^#b
m_Key.SetCurSel(0); sP%.o7&n
RegisterHotkey(); >rubMGb
CMenu* pMenu=GetSystemMenu(FALSE); +l(}5(wc
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); 3OlY Ml
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); I5]zOKlVR
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); w0iEx1i
return TRUE; // return TRUE unless you set the focus to a control rB]/N,R
} u.6%n.g
{'%=tJ[YX
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) TF>F7v(,45
{ 9`AQsZ2
if ((nID & 0xFFF0) == IDM_ABOUTBOX) b8&9pLl
{ ;nE}%lT
CAboutDlg dlgAbout; ;]!
dlgAbout.DoModal(); _NFJm(X.
} 4tjRju?
else ?$Pj[O^hl
{ ~m7+^c@,
CDialog::OnSysCommand(nID, lParam); vNIQc "\-
} ,U}8(D~:
} 75y#^pD?c
b%(0AL
void CCaptureDlg::OnPaint() <>TBM^
{ Alz#zBGb
if (IsIconic()) ff0,K#-
{ syF/jWM5
CPaintDC dc(this); // device context for painting (!s[~O 6
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); jk@]d5
// Center icon in client rectangle i{2KMa{K
int cxIcon = GetSystemMetrics(SM_CXICON); P;34Rd
int cyIcon = GetSystemMetrics(SM_CYICON); YQ/*|
CRect rect; z5I<,[`
GetClientRect(&rect); }O/Nn0,
int x = (rect.Width() - cxIcon + 1) / 2; {8Ll\j@ "
int y = (rect.Height() - cyIcon + 1) / 2; V|=
1<v
// Draw the icon .;'xm_Gw<
dc.DrawIcon(x, y, m_hIcon); AO6;aT
} jo;n~>3P
else <S
qbj;
{ b~}}{fm&f
CDialog::OnPaint(); s6I]H
} Ts\7)6|F
} 6C:Lq%}
>qCT#TY
HCURSOR CCaptureDlg::OnQueryDragIcon() 0Ko,S(M_
{ hjE9[{K
return (HCURSOR) m_hIcon; 9p XFC9
} dU,/!|.K
\iFE,z
void CCaptureDlg::OnCancel() qF?S[Z;
{ <qBPN{'a"
if(bTray) dZ*o H#B
DeleteIcon(); LBg#KQ@
CDialog::OnCancel(); +] #>6/2q
} V4 7Fp
@azS)4L
void CCaptureDlg::OnAbout() WKG=d]5
{ 1na[=Q2
CAboutDlg dlg; 0*q:p`OLw*
dlg.DoModal(); x{rt\OT
} .#X0P=
HwHI$IB
void CCaptureDlg::OnBrowse() )~6974
{ m5S/T\,X
CString str; gI]Vyg<{d
BROWSEINFO bi; B~^\jRd"
char name[MAX_PATH]; ^JTfRZ:a
ZeroMemory(&bi,sizeof(BROWSEINFO)); ?@~FT1"6G
bi.hwndOwner=GetSafeHwnd(); bnlL-]]9z
bi.pszDisplayName=name; R~`Y6>o~9:
bi.lpszTitle="Select folder"; gVGq
bi.ulFlags=BIF_RETURNONLYFSDIRS; G 6][@q
LPITEMIDLIST idl=SHBrowseForFolder(&bi); ;BqX=X+#
if(idl==NULL) E$cr3 t7Xy
return; +wmfl:\^{H
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); Y, P-@(
str.ReleaseBuffer(); 7
ir T6O<.
m_Path=str; }5~;jN=k
if(str.GetAt(str.GetLength()-1)!='\\') X@arUs7
m_Path+="\\"; ,GK>|gNsb
UpdateData(FALSE); 7Qo*u;fr
} ]SQ_*$`
@t_<oOI2
void CCaptureDlg::SaveBmp() kz#DBh!&
{ !n7?w@2a'
CDC dc; /F\7_
dc.CreateDC("DISPLAY",NULL,NULL,NULL); p'H5yg3h
CBitmap bm; 8w{V[@QLn
int Width=GetSystemMetrics(SM_CXSCREEN); xe5>)\18-
int Height=GetSystemMetrics(SM_CYSCREEN); rJAY7/u
bm.CreateCompatibleBitmap(&dc,Width,Height); "PX~Yc
CDC tdc; 9`xq3EL2T
tdc.CreateCompatibleDC(&dc); XLtuck
CBitmap*pOld=tdc.SelectObject(&bm); sx22|j`)V
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); h.67]U7m
tdc.SelectObject(pOld); 4EOu)#
BITMAP btm; k2xjcrg
bm.GetBitmap(&btm); _%t w#cM
DWORD size=btm.bmWidthBytes*btm.bmHeight; `q F:rQ
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); lU\|F5O@#
BITMAPINFOHEADER bih; qB8<(vBP+
bih.biBitCount=btm.bmBitsPixel; %hXa5}JL
bih.biClrImportant=0; a(m#GES
bih.biClrUsed=0; _8bqk\m+
bih.biCompression=0; lY6U $*9c
bih.biHeight=btm.bmHeight; j*CnnM#n
bih.biPlanes=1; #oHHKl=M
bih.biSize=sizeof(BITMAPINFOHEADER); UOa{J|k>h
bih.biSizeImage=size; Q} /
:
bih.biWidth=btm.bmWidth; cM55
vVd
bih.biXPelsPerMeter=0; er 97&5
bih.biYPelsPerMeter=0; b7\nCRY
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); 3c6<JW
static int filecount=0; le*pd+> j
CString name; vZ*593C8
name.Format("pict%04d.bmp",filecount++); -q-%)f
name=m_Path+name; k(T/ydrw
BITMAPFILEHEADER bfh; _mcD*V
bfh.bfReserved1=bfh.bfReserved2=0; 9;:Lf
bfh.bfType=((WORD)('M'<< 8)|'B'); xEbcF+@
bfh.bfSize=54+size; ](%-5G1<
bfh.bfOffBits=54; r1,RloyZS
CFile bf; ,#s}nJ4
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ 9D&ocV3QV
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); ~x824xW
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); ll6~8PN
bf.WriteHuge(lpData,size); (Y-7B
bf.Close(); k+_pj k
nCount++; 6Z7{|B5}Y
} :g][99
GlobalFreePtr(lpData); 0Tq6\:
if(nCount==1) 3Y>!e#
m_Number.Format("%d picture captured.",nCount); T@X!vCjf6
else qg+8i9Y!
m_Number.Format("%d pictures captured.",nCount); qF>}"m
UpdateData(FALSE); ).xQ~A\.
} ;X\,-pjv
SC'fT!
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) 1;SWfKU?.
{ !sUo+Y
if(pMsg -> message == WM_KEYDOWN) S_C+1e
{ Zsaz#z|xW
if(pMsg -> wParam == VK_ESCAPE) VNF@)!l
return TRUE; uZi]$/ic
if(pMsg -> wParam == VK_RETURN) )bqO}_B
return TRUE; Dk/;`sXV
} 7v#sr<
return CDialog::PreTranslateMessage(pMsg); BsRxD9r
} 'r3I/qg*m
zxXm9zrLo
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) )
_"`{2
{ \
VJ3
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ )~rN{W<s`H
SaveBmp(); )fv0H&g
return FALSE; l\a 0 k4
} 2}t2k>
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ TN(1oJ:
CMenu pop; 7)z^*;x
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); m\[r6t]V
CMenu*pMenu=pop.GetSubMenu(0); |6$6Za]:
pMenu->SetDefaultItem(ID_EXITICON); mI@]{K}Q%
CPoint pt; L=
hPu#&/
GetCursorPos(&pt); @MTm8E6au
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); <!R~G-D#_T
if(id==ID_EXITICON) 0zetOlFbO
DeleteIcon(); nCJ)=P.d
else if(id==ID_EXIT) GoZr[=d
OnCancel(); NEJxd%-
return FALSE; Yaht<Hy
} B xq(+^T
LRESULT res= CDialog::WindowProc(message, wParam, lParam); EC|t4u3
if(message==WM_SYSCOMMAND&&wParam==SC_MINIMIZE) Wfz&:J#
AddIcon(); e%SQ~n=H 9
return res; Q%
)fuI
} dFK/
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