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:
\r,.hUp
Y26l,XIV 一、实现方法
PSS/JFZ^ , vyx`wDd 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:
%W;Gf9.w 4ZpF1Zc4B #pragma data_seg("shareddata")
5O
;^Mk| HHOOK hHook =NULL; //钩子句柄
3>)BI(Wl UINT nHookCount =0; //挂接的程序数目
Z8 %\v(L static UCHAR HotKey[MAX_KEY] = {0}; //热键虚拟键码
[Od9,XBa static UCHAR HotKeyMask[MAX_KEY] = {0}; //组合掩码, control=4,alt=2,shift=1
.fY<"2g static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
l>Ja[`X@ static int KeyCount =0;
y4rJ- static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
Z3>3&|& #pragma data_seg()
_)2TLA
n3 >Eg .c 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。
hpV
/F }A/&]1GWk 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:
6F/
OlK< jYID44$ BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR
yc=#Jn?S cKey,UCHAR cMask)
q<[ke
{
}IkEyJsk BOOL bAdded=FALSE;
h_GBx|c for(int index=0;index<MAX_KEY;index++){
{eN{Zh5" if(hCallWnd[index]==0){
FKnQwX.0 hCallWnd[index]=hWnd;
<D;Q8 HotKey[index]=cKey;
bu]Se6%} HotKeyMask[index]=cMask;
X3iRR{< @ bAdded=TRUE;
D s,"E#? KeyCount++;
h=r<
B\Pa break;
P3ev4DL }
L00;rTs> }
J*KBG2+13 return bAdded;
Tc5OI' -V }
3l(;Pt-yI //删除热键
,h.Jfo54, BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
yi-"hT` {
A<X :K
nl BOOL bRemoved=FALSE;
j{Jc6U for(int index=0;index<MAX_KEY;index++){
ZfCr"aL if(hCallWnd[index]==hWnd){
gdFoTcHgO| if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
#s
R0* hCallWnd[index]=NULL;
'#
IuY HotKey[index]=0;
!XA%[u HotKeyMask[index]=0;
!2U7gVt"* bRemoved=TRUE;
Mth`s{sATa KeyCount--;
;6
6_G Sjz break;
}rA+W-7 }
mYOdBd }
)LrCoI =| }
( WtE`f;Q return bRemoved;
_6S
b.9m }
`e'o~oSu .O%1)p CSqb)\8Oi* DLL中的钩子函数如下:
q
'{<c3& /0&:Yp=> LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
)P9{47 {
{G1aAM\Hz BOOL bProcessed=FALSE;
1L=Qg4 H if(HC_ACTION==nCode)
s]<r {
v\9,j if((lParam&0xc0000000)==0xc0000000){// 有键松开
cU5"c)$' switch(wParam)
$N+{r= {
hB$Y4~T% case VK_MENU:
m/c&/6nk MaskBits&=~ALTBIT;
9_A0:S9Z break;
/xm#:+Sc case VK_CONTROL:
:;*#Qh3" MaskBits&=~CTRLBIT;
+s(IQt break;
Q'Kik5I case VK_SHIFT:
FDd>(!> MaskBits&=~SHIFTBIT;
E<#4G9O< break;
ZR-s{2sl default: //judge the key and send message
%v+fN?%x,d break;
u"8 ;fS }
nL(%&z \4 for(int index=0;index<MAX_KEY;index++){
+b,31 if(hCallWnd[index]==NULL)
.m]=JC5' continue;
m`\i+ if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
w]Ko/;;^2 {
90h1e7ZcC SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
azDC'.3{p bProcessed=TRUE;
^Im%D(MY }
n:^"[Le }
5ih"Nds[H }
HMS9y%zl/ else if((lParam&0xc000ffff)==1){ //有键按下
:OQ:@Yk switch(wParam)
#C,f/PXfaB {
bu"68A;> case VK_MENU:
3+8" MaskBits|=ALTBIT;
kulQR>u break;
ZYA.1VrM case VK_CONTROL:
|`Oa/\U MaskBits|=CTRLBIT;
Y9@dZw%2 break;
Ij6Wz.* case VK_SHIFT:
6`4W, MaskBits|=SHIFTBIT;
Y zBA{FE break;
`k}l$ih`X default: //judge the key and send message
,8xP8T~Kmv break;
? __aVQ7 }
d7_ g
u for(int index=0;index<MAX_KEY;index++){
0n<(*bfW if(hCallWnd[index]==NULL)
N{hF [F continue;
*e-ptgO if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
ueE?"Hk {
4/`h@]8P SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
Y7:Y{7E7 bProcessed=TRUE;
9"HmHy&:E }
-Nlf~X }
8pq-nuf|K }
lA.;ZD! if(!bProcessed){ //一般按键事件,为监视键盘的程序留出余地
^0s\/qyqm for(int index=0;index<MAX_KEY;index++){
J%\~<_2ny if(hCallWnd[index]==NULL)
x'@32gv continue;
+i`Q 7+d if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
-#S)}NEn SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
CEX}`I*- //lParam的意义可看MSDN中WM_KEYDOWN部分
Nr]8P/[~ }
)pZekh]v }
ANFg]g.Az }
.?i-rTF: return CallNextHookEx( hHook, nCode, wParam, lParam );
N7~)qqb }
rZ!Yi*? f s?@)a,C%k 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:
<nb3~z1 }ED
nLou BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
vlPl(F1 BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
FV^4 0 .FHdJ< 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:
[j=,g-EOA `dgM|.w5= LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
!O F?xW {
:PFx& if(message==WM_HOTKEY&&lParam==WM_KEYDOWN)
%l8*t$8 {
4#@W;' //lParam表示是按下还是松开,如果有多个热键,由wParam来区分
UKKSc>D1 SaveBmp();
sw41wj return FALSE;
UBhciZ }
Y3P.| …… //其它处理及默认处理
];pf }
p- "Z'$A` Vedyy\TU $*AC>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。
ol$2sI=.s >&<<8Ln 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。
p| \%:# R,x> $n 二、编程步骤
GP[6nw_'^ XdGpW 1、 启动Visual C++,生成一个DLL项目和一个基于对话框的应用程序项目,并将两个项目分别命名为"Hook"和"Capture";
J7'f@X~nM pK6e/eC 2、 在"Hook"项目中导出AddHotkey()、DeleteHotkey()函数;
m feMmKFu\ %ezb^O_6v 3、 在"Capture"项目中按照图一所示设置对话框的界面,具体设置参见代码部分;
ggm2%|?X atLV`U&t 4、 使用Class Wizard在"Capture"项目中添加按钮的鼠标单击消息响应函数,并重载对话框的WindowProc()函数;
uq !; <$i"zb 5、 添加代码,编译运行程序。
T|o`a+? ?o~:'Z 三、程序代码
@cuD8<\i Ka]J^w;a ///////////////////////////////////// Hook.h : main header file for the HOOK DLL
0^GbpSW{ #if !defined(AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_)
;m@1Ec@*p #define AFX_HOOK_H__AEBFF705_C93A_11D5_B7D6_0080C82BE86B__INCLUDED_
x7P([^i #if _MSC_VER > 1000
Sc1+(z #pragma once
=y<">- #endif // _MSC_VER > 1000
ET,Q3X\Oe #ifndef __AFXWIN_H__
y:[BP4H ?y #error include 'stdafx.h' before including this file for PCH
-,~;qSs #endif
0W T#6D #include "resource.h" // main symbols
*M>
iZO*@ class CHookApp : public CWinApp
hWq.#e6 {
j>0<#SYBu public:
?w+ QbT CHookApp();
QP6z?j. // Overrides
?Yq J.F; // ClassWizard generated virtual function overrides
w`c0a&7 //{{AFX_VIRTUAL(CHookApp)
r-RCe3%g% public:
w=f0*$ue+w virtual BOOL InitInstance();
NXzU0 virtual int ExitInstance();
tmO;:n<N //}}AFX_VIRTUAL
,c4c@|Bh? //{{AFX_MSG(CHookApp)
"El^38Ho // NOTE - the ClassWizard will add and remove member functions here.
lpl8h4d // DO NOT EDIT what you see in these blocks of generated code !
v!NB~"LQ //}}AFX_MSG
xn(+G$m DECLARE_MESSAGE_MAP()
b!i`o%Vb };
u.Mqj"o\ LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam, LPARAM lParam);
c%|vUAq* BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
p+, 1Fi BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
cQ8dc+ { BOOL InitHotkey();
UI!6aVL. BOOL UnInit();
g3|BE2? #endif
v~^ks{ 33Ssylno //////////////////////////////////////// Hook.cpp : Defines the initialization routines for the DLL.
`IEq@Wr#$! #include "stdafx.h"
v"z(JF #include "hook.h"
B0f_kH~p~ #include <windowsx.h>
"'['(e+7 #ifdef _DEBUG
:{[<g]( #define new DEBUG_NEW
u5Qp/ag?N #undef THIS_FILE
5^)?mA static char THIS_FILE[] = __FILE__;
# v.L$7O #endif
Tr}R`6d$ #define MAX_KEY 100
MKU7fFN. #define CTRLBIT 0x04
cyW;,uT)D #define ALTBIT 0x02
'oleB_B #define SHIFTBIT 0x01
:e1'o #pragma data_seg("shareddata")
^9&b+u=X HHOOK hHook =NULL;
?22d},. UINT nHookCount =0;
PC*m%
?+ static UCHAR HotKey[MAX_KEY] = {0}; //hotkey
`.{U-U\ static UCHAR HotKeyMask[MAX_KEY] = {0}; //flag for hotkey, value is VK_CONTRL or VK_NEMU or VK_SHIFT
; D1FAz static HWND hCallWnd[MAX_KEY] = {0}; //window associated with hotkey
5a'yXB} static int KeyCount =0;
yh S#&)O static UCHAR MaskBits =0; //00000 Ctrl Alt Shift
WK
pUn8&N
#pragma data_seg()
}<vvxi HINSTANCE hins;
Vy]A,Rn7 void VerifyWindow();
2
9q?$V( BEGIN_MESSAGE_MAP(CHookApp, CWinApp)
+0VG[c\8 //{{AFX_MSG_MAP(CHookApp)
t,RyeS/ // NOTE - the ClassWizard will add and remove mapping macros here.
sz'p3 // DO NOT EDIT what you see in these blocks of generated code!
|<sf:#YzY& //}}AFX_MSG_MAP
K!GUv{fp END_MESSAGE_MAP()
S[vRw]* JW=uK$s O CHookApp::CHookApp()
fD'/#sA#' {
UM<@t%|> // TODO: add construction code here,
`)"tO&Fn // Place all significant initialization in InitInstance
lp(Nv(S }
cL#-*_( cv3L&zg M CHookApp theApp;
Vl<`|C> LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
aiYo8+{!# {
kEO1TS BOOL bProcessed=FALSE;
_*Pfp+if if(HC_ACTION==nCode)
aC`Li^ {
IWQ&6SDW$z if((lParam&0xc0000000)==0xc0000000){// Key up
Bb~5& @M|N switch(wParam)
cn$5:%IK {
ji}#MBac case VK_MENU:
C1 W>/?XC MaskBits&=~ALTBIT;
PC|'yAN:
break;
C5Xof|#p| case VK_CONTROL:
9qEOgJ MaskBits&=~CTRLBIT;
[6H}/_nD break;
b7bSTFZxC case VK_SHIFT:
bZ/
hgqS MaskBits&=~SHIFTBIT;
oew|23Ytb break;
?FN9rhAC default: //judge the key and send message
j~epbl)pC break;
B22b&0 }
[ a@B
=E for(int index=0;index<MAX_KEY;index++){
' PELf
P8 if(hCallWnd[index]==NULL)
{(;B5rs continue;
a2o.a2
if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
cv= \g Z {
EJ G2^DSS SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYUP);
"=qv#mZ#9 bProcessed=TRUE;
z=qWJQ }
i-b1d'?Rb }
CJp-Y}fGEA }
I:F
<vE else if((lParam&0xc000ffff)==1){ //Key down
/u=aX switch(wParam)
\*uugw,\y {
bhYU5I 9 case VK_MENU:
ha5e(Hj? MaskBits|=ALTBIT;
glx2I_y break;
]oEQ4 case VK_CONTROL:
p'}lN|"{O MaskBits|=CTRLBIT;
u#FXW_-TK break;
VgA48qZ case VK_SHIFT:
0(8gQ
2n MaskBits|=SHIFTBIT;
DcN"=Y break;
;u,rtEMy; default: //judge the key and send message
_%%yV break;
FuuS"G,S }
%*jGim~s for(int index=0;index<MAX_KEY;index++)
:W~f;k {
eES'}[W> if(hCallWnd[index]==NULL)
"qS!B.rt: continue;
jn^fgH? if(IsWindow(hCallWnd[index])&&(HotKey[index]==wParam)&&(HotKeyMask[index]==MaskBits))
Oxv+1Ub<Dv {
G,]z(% SendMessage(hCallWnd[index],WM_HOTKEY,wParam,WM_KEYDOWN);
bEd?^h bProcessed=TRUE;
zks#EzQ }
2 5Q+1 }
@V$I?iXV }
&$F[/[Ds+ if(!bProcessed){
3p_b8K_bG for(int index=0;index<MAX_KEY;index++){
@bT3'K-4 if(hCallWnd[index]==NULL)
z?kd'j`FG continue;
!lhFKb;
if(IsWindow(hCallWnd[index])&&(HotKey[index]==0)&&(HotKeyMask[index]==0))
<GaT|Hhc= SendMessage(hCallWnd[index],WM_HOTKEY,WM_HOTKEY,lParam);
D^u\l }
kon5+g9q }
xQo~%wW,? }
:G}DAUFN return CallNextHookEx( hHook, nCode, wParam, lParam );
4[1k\ }
lUHtjr vL$|9|W( BOOL InitHotkey()
%}h`+L {
"y$ qrN- if(hHook!=NULL){
9 #Y2`pT nHookCount++;
zmb@*/fK return TRUE;
E?Cj/o }
J)*8|E9P else
s`c?: hHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)KeyboardProc,hins,0);
Hd0Xx}3& if(hHook!=NULL)
Vv7PCaq nHookCount++;
ufPCx|x~ return (hHook!=NULL);
2h)8Fq_" }
BC({ EE~R) BOOL UnInit()
DWrbp {
+9zA^0 if(nHookCount>1){
nLJBq)i nHookCount--;
~C|,b" return TRUE;
p+[}Hxx= }
u s`} BOOL unhooked = UnhookWindowsHookEx(hHook);
U
Du~2% if(unhooked==TRUE){
HN68!v}C| nHookCount=0;
cy3M^_5B< hHook=NULL;
iNJAZ6@+ }
hgO?+x return unhooked;
\Yq0 zVol }
"0-y*1/m qlUzr.^- BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
B+46.bIH {
!
=WcF5 BOOL bAdded=FALSE;
h<Wg 3o for(int index=0;index<MAX_KEY;index++){
,QvYTJ{ if(hCallWnd[index]==0){
F7T E|LZ hCallWnd[index]=hWnd;
]fE3s{y
&- HotKey[index]=cKey;
p=B?/Sqa HotKeyMask[index]=cMask;
y(v_-6b bAdded=TRUE;
-B9S}NPo KeyCount++;
q-
:4=vkn break;
yW("G-Nm }
d}-'<Z#G }
xNX'~B^4d return bAdded;
j#3m|dQ }
TQJF+;% t',BI BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)
v=p0 +J> {
,|pp67 BOOL bRemoved=FALSE;
JIxiklk for(int index=0;index<MAX_KEY;index++){
M&yqfb[ if(hCallWnd[index]==hWnd){
J=*K"8Qr if(HotKey[index]==cKey&&HotKeyMask[index]==cMask){
)GJP_*Ab hCallWnd[index]=NULL;
v[&'k\ HotKey[index]=0;
,I`_F, HotKeyMask[index]=0;
tD-gc''H bRemoved=TRUE;
_whF^g8 KeyCount--;
HO5d%85 break;
a$m_D!b~_ }
Yy
h=G }
[Oy >R
}
FT.@1/ ) return bRemoved;
Y<Q\d[3^F }
qq;b~ 3kW zvr\36 void VerifyWindow()
yX!#a>d"H {
(Es{l a G for(int i=0;i<MAX_KEY;i++){
/U*yw5 if(hCallWnd
!=NULL){ ETp'oh}?
if(!IsWindow(hCallWnd)){ M<(u A'
hCallWnd=NULL; *jF#^=
HotKey=0; U$'y_}V
HotKeyMask=0; C[YnrI!
KeyCount--; +'XhC#:
} T//S,
} Df@/cT
} F=}Z51|:~
} 2Va4i7"X\
uTGcQs}
BOOL CHookApp::InitInstance() @~o`#$*|
{ 3eKQ<$w
AFX_MANAGE_STATE(AfxGetStaticModuleState()); J^ ={}
hins=AfxGetInstanceHandle(); cy1jZ1)
InitHotkey(); doD>m?rig3
return CWinApp::InitInstance(); ><Uk*mwL
} <AUWby,"
/s[DI;M$o
int CHookApp::ExitInstance() 'ere!:GJD
{ O&'/J8
VerifyWindow(); l~1AT%
UnInit(); KzVTkDn,
return CWinApp::ExitInstance(); /6U
4S>'(
} };sMU6e
<*Y'lV
////////////////////////////////////////////////////////////////////// CaptureDlg.h : header file \ e,?rH
#if !defined(AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_) 5@P-g
#define AFX_CAPTUREDLG_H__97B51708_C928_11D5_B7D6_0080C82BE86B__INCLUDED_ ]0/p 7N14
#if _MSC_VER > 1000 ]MAT2$"le
#pragma once A*'V+(
#endif // _MSC_VER > 1000 ;fGx;D
U)[ty@zyF
class CCaptureDlg : public CDialog y $V[_TN
{ 2jA%[L9d^
// Construction Y {c5
public: <xn;bp[
BOOL bTray; de YyaV
BOOL bRegistered; |(ocDmd
BOOL RegisterHotkey(); Z;b+>2oL
UCHAR cKey; A}G|Yfn
UCHAR cMask; E*|tOj9`1n
void DeleteIcon(); -_~)f{KN@
void AddIcon(); .mPg0
UINT nCount; rkYjq4Z@
void SaveBmp(); =Od>;|]m
CCaptureDlg(CWnd* pParent = NULL); // standard constructor f0oek{
// Dialog Data Kx6y"
{me|
//{{AFX_DATA(CCaptureDlg) R8<eN9bJ9
enum { IDD = IDD_CAPTURE_DIALOG }; iV
hJH4
CComboBox m_Key; .Z%G@X*
BOOL m_bControl; >;nS8{2o
BOOL m_bAlt; 0H:dv:#WAI
BOOL m_bShift; f=I:DkR
CString m_Path; ~O4|KY
CString m_Number; ~L4eZ
//}}AFX_DATA D;js.ZF
// ClassWizard generated virtual function overrides Y\?j0X;
//{{AFX_VIRTUAL(CCaptureDlg) arh@`'Q
public: |F!F{d^p
virtual BOOL PreTranslateMessage(MSG* pMsg); E
_iO@
protected: mU G
%LM
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support 8QF`,oXQO
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); gb 4pN
//}}AFX_VIRTUAL nGrVw&
// Implementation ;nB2o-%
protected: 3s(Ia^
HICON m_hIcon; v8@eW.I1
// Generated message map functions @Fx@5e
//{{AFX_MSG(CCaptureDlg) FA$zZs10\
virtual BOOL OnInitDialog(); rt b* n~
afx_msg void OnSysCommand(UINT nID, LPARAM lParam); k
dU!
kj
afx_msg void OnPaint(); @]'SeiNp
afx_msg HCURSOR OnQueryDragIcon(); g%\L&}Jd
virtual void OnCancel(); +?d} 7zh
afx_msg void OnAbout(); HDS"F.l5
afx_msg void OnBrowse(); \*"`L3
afx_msg void OnChange(); km\%BD~
//}}AFX_MSG nNn56&N]
DECLARE_MESSAGE_MAP() G6O/(8
}; PZM42"[&
#endif MF.[8Zb
T;?+kC3
////////////////////////////////////////////////////////////// CaptureDlg.cpp : implementation file K.DXJ UR
#include "stdafx.h" 8tQ|-l*
#include "Capture.h" vJCf~'
#include "CaptureDlg.h" t ;-L{`mW
#include <windowsx.h> H_B~P%E@]
#pragma comment(lib,"hook.lib") =!<G!^
#ifdef _DEBUG mG(N:n%*K
#define new DEBUG_NEW nGa1a
#undef THIS_FILE +d39f-[
static char THIS_FILE[] = __FILE__; /iC_!n u
#endif kuS/S\Z5K
#define IDM_SHELL WM_USER+1 xP@/9SM
BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask); }uQ${]&D
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask); 3g'+0tEl
UCHAR Key_Table[]={0x78,0x79,0x7a,0x7b,0x6a,0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39}; a%K}j\M
class CAboutDlg : public CDialog b5 Q NEi
{ \Ph7(ik
public: C\Ayv)S#2
CAboutDlg(); pm]fQuq
// Dialog Data @"8R3BN
//{{AFX_DATA(CAboutDlg) ;<-7*}Dj
enum { IDD = IDD_ABOUTBOX }; rn" pKUd
//}}AFX_DATA \P?A7vuhLs
// ClassWizard generated virtual function overrides s4,(26y
//{{AFX_VIRTUAL(CAboutDlg) }kPVtSQ
protected: ;CmOsA,1
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support !N~*EI$
//}}AFX_VIRTUAL nem@sB;v#
// Implementation L[C*@
uK
protected: gq 4 . d
//{{AFX_MSG(CAboutDlg) DuNcX$%%
//}}AFX_MSG r95zP]T
DECLARE_MESSAGE_MAP() H;I~N*ltJ(
}; Z .Pi0c+
}gCHQ;U7`
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) POGw`:)A
{ M#M?1(O/NE
//{{AFX_DATA_INIT(CAboutDlg) |I1+"Mp
//}}AFX_DATA_INIT 6tdI6
} $Jf9;.
r/AHJU3&eY
void CAboutDlg::DoDataExchange(CDataExchange* pDX) _T]>/}}p
{ Q]\j>>
CDialog::DoDataExchange(pDX); IJPgFZ7
//{{AFX_DATA_MAP(CAboutDlg) se,Z#H
//}}AFX_DATA_MAP 9}
*$n&B
} ~3=2=Uf
/DU*M,
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) kxo.v |)8
//{{AFX_MSG_MAP(CAboutDlg) qG9qN.|dC
// No message handlers ma]?
)1<{
//}}AFX_MSG_MAP 0Hcbkep9D
END_MESSAGE_MAP() n\= (S9
4VFc|g
CCaptureDlg::CCaptureDlg(CWnd* pParent /*=NULL*/) OCW+?B;
: CDialog(CCaptureDlg::IDD, pParent) Qp!J:YV
{ o}~3JBnT
//{{AFX_DATA_INIT(CCaptureDlg) yWHne~!
m_bControl = FALSE; X47O l
m_bAlt = FALSE; 3w'W~
m_bShift = FALSE; Jz$>k$!UD
m_Path = _T("c:\\"); Yu3_=:
<C
m_Number = _T("0 picture captured."); i<iXHBs
nCount=0; ou6j*eSN
bRegistered=FALSE; [g|Hj)(
bTray=FALSE; v@_in(dk
//}}AFX_DATA_INIT h7?.2Q&S
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 H8i+'5x,?
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); AZwa4n}"
} oT->^4WY
Wc;+2Hl[@
void CCaptureDlg::DoDataExchange(CDataExchange* pDX) NI\H
\#bJ
{ h{/ve`F>@
CDialog::DoDataExchange(pDX); x,1=D~L}
//{{AFX_DATA_MAP(CCaptureDlg) A&l7d0Z^j5
DDX_Control(pDX, IDC_KEY, m_Key); \n0gTwiO%
DDX_Check(pDX, IDC_CONTROL, m_bControl); B01^oYM}
DDX_Check(pDX, IDC_ALT, m_bAlt); -N z}DW>
DDX_Check(pDX, IDC_SHIFT, m_bShift); t w!.%_1^
DDX_Text(pDX, IDC_PATH, m_Path); :t>Q:mX(N
DDX_Text(pDX, IDC_NUMBER, m_Number); }17bV, t
//}}AFX_DATA_MAP 4$Pr|gx
} #!d]PH746
b-nY xd
BEGIN_MESSAGE_MAP(CCaptureDlg, CDialog) mV zu~xym
//{{AFX_MSG_MAP(CCaptureDlg) @?/\c:cp
ON_WM_SYSCOMMAND() O+FBQiv
ON_WM_PAINT() N84qcc
ON_WM_QUERYDRAGICON() {^wdJZ~QLK
ON_BN_CLICKED(ID_ABOUT, OnAbout) rfTe
ON_BN_CLICKED(IDC_BROWSE, OnBrowse) RbAt3k;y
ON_BN_CLICKED(ID_CHANGE, OnChange) J wFned#T
//}}AFX_MSG_MAP o? dR\cxj
END_MESSAGE_MAP() ND*]gM
BD'NuI
BOOL CCaptureDlg::OnInitDialog() hbnS~sva
{ !KDr`CV&
CDialog::OnInitDialog(); +H}e)1^I
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); D3.VXuKn6
ASSERT(IDM_ABOUTBOX < 0xF000); V}:'Xgp*N
CMenu* pSysMenu = GetSystemMenu(FALSE); ;+/NjC1
if (pSysMenu != NULL) 1;`Fe":;vC
{ CB({Rn
CString strAboutMenu; %uuH^ A
strAboutMenu.LoadString(IDS_ABOUTBOX); ?9S+Cj`
if (!strAboutMenu.IsEmpty()) `[@VxGy_
{ YFqZe6g0$
pSysMenu->AppendMenu(MF_SEPARATOR); :gaETr
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); o^PuhVu
} bK7.St
} z1Q2*:)c
SetIcon(m_hIcon, TRUE); // Set big icon p1^0{ILx
SetIcon(m_hIcon, FALSE); // Set small icon lh$CWsx
m_Key.SetCurSel(0); @+t (xCv
RegisterHotkey(); \n(ROf^'
CMenu* pMenu=GetSystemMenu(FALSE); ai^t=
s
pMenu->DeleteMenu(SC_MAXIMIZE,MF_BYCOMMAND); B^m!t7/,
pMenu->DeleteMenu(SC_SIZE,MF_BYCOMMAND); M[z3 f
pMenu->DeleteMenu(SC_RESTORE,MF_BYCOMMAND); >)y$mc6
return TRUE; // return TRUE unless you set the focus to a control YkI9d&ib+
} DZP*x
1RA }aX
void CCaptureDlg::OnSysCommand(UINT nID, LPARAM lParam) <Wf0QO,
{
`EVg'?pl
if ((nID & 0xFFF0) == IDM_ABOUTBOX) H9E(\)@
{ R8uj3!3^
CAboutDlg dlgAbout; `WlH*p)z9
dlgAbout.DoModal(); *|poxT G
} InN{^uN
else >KHp-|0pv
{ qp@m&GH
CDialog::OnSysCommand(nID, lParam); g? I!OG
} sW'6}^Q
} -%=RFgU4
N"~ qoJO
void CCaptureDlg::OnPaint() b-uZ"Kf^
{ :ln/`_
if (IsIconic()) ~4+8p9f
{ NQ{-@/v
CPaintDC dc(this); // device context for painting ^(g_.>
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); CPGL!:
// Center icon in client rectangle Z+,CL/
int cxIcon = GetSystemMetrics(SM_CXICON); gi 5XP]z
int cyIcon = GetSystemMetrics(SM_CYICON); g@(4ujOT
CRect rect; ZR6&AiL(Bj
GetClientRect(&rect); %HVD^. V
int x = (rect.Width() - cxIcon + 1) / 2; 22'vm~2E
int y = (rect.Height() - cyIcon + 1) / 2; &L'6KEahR
// Draw the icon VH<e))5C
dc.DrawIcon(x, y, m_hIcon); e3pnk
=u
} nUqL\(UuY
else ]Y =S
{ <b'1#Pd>0
CDialog::OnPaint(); (QKsB3X
} {RJ52Gx(
} }v&K~!*
( mt*y]p?
HCURSOR CCaptureDlg::OnQueryDragIcon() )WclV~
{ g+3Hwtl
return (HCURSOR) m_hIcon; |C4o zl=O?
} Fq4lXlSB
K?JV]^
void CCaptureDlg::OnCancel() +9jivOmK
{ `xGT_0&ck
if(bTray) @Rf^P(
DeleteIcon(); tbS#^Y
CDialog::OnCancel(); nAvs~J
} Cg7)S[zl
c~37+^B:
void CCaptureDlg::OnAbout() B/rzh? b
{ w#rVSSXQ3
CAboutDlg dlg; Zg2]GJP
dlg.DoModal(); {F/q{c~]
} E;$$+rA
]y}Zi/zh
void CCaptureDlg::OnBrowse() 9LHa&""
{ r;$r=Uf r
CString str; eq{
[?/
BROWSEINFO bi; )u-ns5
char name[MAX_PATH]; py=i!vb&Z%
ZeroMemory(&bi,sizeof(BROWSEINFO)); xmOM<0T
bi.hwndOwner=GetSafeHwnd(); !;jgzi?z
bi.pszDisplayName=name; 5Vm Eyb
bi.lpszTitle="Select folder"; 4NJVW+:2
bi.ulFlags=BIF_RETURNONLYFSDIRS; ePi
Z
LPITEMIDLIST idl=SHBrowseForFolder(&bi); PH[4y:^DN
if(idl==NULL) i:{:xKiC a
return; PQ i
}Evxa
SHGetPathFromIDList(idl,str.GetBuffer(MAX_PATH)); 5e)i!;7Uv
str.ReleaseBuffer(); vyujC`61d
m_Path=str; n~.% p
if(str.GetAt(str.GetLength()-1)!='\\') [Zh2DNp
m_Path+="\\"; k5q(7&C
UpdateData(FALSE); ]M uF9={
} K1<k+t/V
JLml#Pu4
void CCaptureDlg::SaveBmp() g4i #1V=
{ b13nE.
CDC dc; YN$`y1V
dc.CreateDC("DISPLAY",NULL,NULL,NULL); G$|G w
CBitmap bm; X:DMT>5k
int Width=GetSystemMetrics(SM_CXSCREEN); @f\
X4!e*y
int Height=GetSystemMetrics(SM_CYSCREEN); ? 1GJa]G
bm.CreateCompatibleBitmap(&dc,Width,Height); TX&[;jsj
CDC tdc; 7WXiG0
tdc.CreateCompatibleDC(&dc); $G)&J2zL
CBitmap*pOld=tdc.SelectObject(&bm); 75<el.'H
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY); s* @QT8%
tdc.SelectObject(pOld); ?,!uA)({n
BITMAP btm; 4_WH
6Z
bm.GetBitmap(&btm); v [dAywW
DWORD size=btm.bmWidthBytes*btm.bmHeight; _@7(g(pY 3
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size); z"9aAytd
BITMAPINFOHEADER bih; r.?qEe8VV
bih.biBitCount=btm.bmBitsPixel; GsI[N%
bih.biClrImportant=0; . c#90RP
bih.biClrUsed=0; *Gf&q
bih.biCompression=0; =Z^un&'
bih.biHeight=btm.bmHeight; )eVzS j>MT
bih.biPlanes=1; ybC-f'0
bih.biSize=sizeof(BITMAPINFOHEADER); 0=2H9v
bih.biSizeImage=size; IcRM4Ib))Q
bih.biWidth=btm.bmWidth; 87R%ke
bih.biXPelsPerMeter=0; e#K rgUG
bih.biYPelsPerMeter=0; x-tm[x@;o
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS); u6]gQP">I
static int filecount=0; { 576+:*
CString name; gfV]^v
name.Format("pict%04d.bmp",filecount++); )8 oEs
name=m_Path+name; gh.w Li$+
BITMAPFILEHEADER bfh; Q=^ktKMeR
bfh.bfReserved1=bfh.bfReserved2=0; 9fCiLlI
bfh.bfType=((WORD)('M'<< 8)|'B'); ZBPd(;"x+
bfh.bfSize=54+size; j)<;g(
bfh.bfOffBits=54; b!0'Qidh0
CFile bf; }#1UD
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){ er#8D6*
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER)); kx:c*3q.k
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER)); S_a :ML<
bf.WriteHuge(lpData,size); 8moUK3w
bf.Close(); ?0? x+
nCount++; 7ZL,p:f
} !Jk(&.
GlobalFreePtr(lpData); MiRibHXI,
if(nCount==1) fLLnf].O
m_Number.Format("%d picture captured.",nCount); ]r"31.w(
else ~GAlNIv]
m_Number.Format("%d pictures captured.",nCount); h<+PP]l=
UpdateData(FALSE); 5`(((_Um+
} Uf=vs(
3| GNi~
BOOL CCaptureDlg::PreTranslateMessage(MSG* pMsg) Z83q-
{ [c,|Lw4
if(pMsg -> message == WM_KEYDOWN) xhw8#
{ cdd P
T
if(pMsg -> wParam == VK_ESCAPE) K(%dcUGDK>
return TRUE; 5cPSv?x^F@
if(pMsg -> wParam == VK_RETURN) 0f_66`
return TRUE; p7%0hLW
} :(5]Z^
return CDialog::PreTranslateMessage(pMsg); er&uC4Y]a
} :!r9 =N9
%@M00~-
LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) AGw1Pl8]K
{ EGp~Vo-
if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ WZfk}To1#
SaveBmp(); nXx6L!H J#
return FALSE; p~,a=
} |#Yu.c*
if(message==IDM_SHELL&&lParam==WM_RBUTTONUP){ eD>-`'7<
CMenu pop; QCZ,K"y
pop.LoadMenu(MAKEINTRESOURCE(IDR_MENU1)); U>e3_td3,
CMenu*pMenu=pop.GetSubMenu(0); 6n2Vx1b
pMenu->SetDefaultItem(ID_EXITICON); _C7abw-
CPoint pt; 2hjre3"?
GetCursorPos(&pt); (OM?aW
int id=pMenu->TrackPopupMenu(TPM_RIGHTALIGN|TPM_NONOTIFY|TPM_RETURNCMD|TPM_LEFTBUTTON,pt.x,pt.y,this); .6lY*LI
if(id==ID_EXITICON) }CB=c]p
DeleteIcon(); MAm1w'ol"
else if(id==ID_EXIT) oO! 1
OnCancel(); C:|q'"F
return FALSE; j1'xp`jgv
}
z*??YUT\M
LRESULT res= CDialog::WindowProc(message, wParam, lParam); X
,V= od>
if(message==WM_SYSCOMMAND&&wParam==SC_MINIMIZE) ;oN{I@}k
AddIcon(); jKY Aid{-
return res; L%c]%3A
} .0R/'!e
9,Crmbw8
void CCaptureDlg::AddIcon() @lb=-oR!~
{ pgLzFY['
NOTIFYICONDATA data; 2?#y
|/
data.cbSize=sizeof(NOTIFYICONDATA); M"$jpBN*
CString tip; pfJVE
tip.LoadString(IDS_ICONTIP); 3Hb .ZLE#
data.hIcon=GetIcon(0); rf1wS*uU+
data.hWnd=GetSafeHwnd(); (%ri#r
strcpy(data.szTip,tip); r'mnkg2,
data.uCallbackMessage=IDM_SHELL; _qO;{%r
data.uFlags=NIF_ICON|NIF_MESSAGE |NIF_TIP ; =]5DYRhX]
data.uID=98; y]~+ `9
Shell_NotifyIcon(NIM_ADD,&data); |!jYv'%
ShowWindow(SW_HIDE); 7?n*t
bTray=TRUE; (hRgYwUa<
} 89:?.'
mVc'%cPaw
void CCaptureDlg::DeleteIcon() ]yj4~_&O
{
s+y'<88
NOTIFYICONDATA data; (Fbm9(q$d
data.cbSize=sizeof(NOTIFYICONDATA); } K+Q9<~u
data.hWnd=GetSafeHwnd(); hJ$C%1;
data.uID=98; jm#F*F vL
Shell_NotifyIcon(NIM_DELETE,&data); 0`g}(}'L
ShowWindow(SW_SHOW); VOowA^
SetForegroundWindow(); !}Woo$#ND
ShowWindow(SW_SHOWNORMAL); *pS7/Qe
bTray=FALSE;
Rsa\V6N>
} *_"c!eW
ulz\x2[Pf
void CCaptureDlg::OnChange() clR?< LO
{ aOAwezfYR
RegisterHotkey(); 5CRc]Q#@
} _Vk,&